agenttesla | 4b183153a961b60c9d75ec938cd30afeae706cb098a6887dba7e12d8f1f903fe

General

Target

SwiftRef_INV0880021122020.exe
Size

441KB
MD5

590fb4682dfff1f638befdd634ef2e65
SHA1

aaf785e8893b86f22b28a5badebaa59de0969d83
SHA256

df0bd7eda7bc8058d76a69f26c62a909b2910e41413f65311303a542758f3187
SHA512

400b18d7f4d310e5aa33683f98f6d947097658a0c20d6065647ce139188a72fe92eb5f0ae0c769c4b5100be8c76861632881f210926091be29b48c3afa92a5cd
SSDEEP

6144:cNWBZARLCD0fAaAIyTTG6eOOIbuXKvyUTQoEevzsHBhv1ucFQTatxu8RWjI2j5Om:BD7I3TyTReOz8aQezIBhdxiaO8Rj2

Score

10^/10

agenttesla collection credential_access discovery keylogger spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
smtp.vivaldi.net
Port:
587
Username:
[email protected]
Password:
@2222!444211

Signatures

AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
keylogger trojan stealer spyware agenttesla
Agenttesla family
agenttesla

AgentTesla payload 1 IoCs

resource	yara_rule
behavioral1/memory/4756-12-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
spyware stealer

Data from Local System
T1005

Credentials in Registry
T1552.002
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Unsecured Credentials: Credentials In Files 1 TTPs
Steal credentials from unsecured files.
credential_access stealer

Credentials In Files
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3623617754-4043701611-775564599-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SwiftRef_INV0880021122020.exe
Key opened	\REGISTRY\USER\S-1-5-21-3623617754-4043701611-775564599-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SwiftRef_INV0880021122020.exe
Key opened	\REGISTRY\USER\S-1-5-21-3623617754-4043701611-775564599-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SwiftRef_INV0880021122020.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3024 set thread context of 4756	3024	SwiftRef_INV0880021122020.exe	102

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SwiftRef_INV0880021122020.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	SwiftRef_INV0880021122020.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4756	SwiftRef_INV0880021122020.exe
4756	SwiftRef_INV0880021122020.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4756	SwiftRef_INV0880021122020.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4756	SwiftRef_INV0880021122020.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3024 wrote to memory of 4756	3024	SwiftRef_INV0880021122020.exe	102
PID 3024 wrote to memory of 4756	3024	SwiftRef_INV0880021122020.exe	102
PID 3024 wrote to memory of 4756	3024	SwiftRef_INV0880021122020.exe	102
PID 3024 wrote to memory of 4756	3024	SwiftRef_INV0880021122020.exe	102
PID 3024 wrote to memory of 4756	3024	SwiftRef_INV0880021122020.exe	102
PID 3024 wrote to memory of 4756	3024	SwiftRef_INV0880021122020.exe	102
PID 3024 wrote to memory of 4756	3024	SwiftRef_INV0880021122020.exe	102
PID 3024 wrote to memory of 4756	3024	SwiftRef_INV0880021122020.exe	102

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3623617754-4043701611-775564599-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SwiftRef_INV0880021122020.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3623617754-4043701611-775564599-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	SwiftRef_INV0880021122020.exe

C:\Users\Admin\AppData\Local\Temp\SwiftRef_INV0880021122020.exe
"C:\Users\Admin\AppData\Local\Temp\SwiftRef_INV0880021122020.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Users\Admin\AppData\Local\Temp\SwiftRef_INV0880021122020.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:4756

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

5

T1552

Credentials In Files

4

T1552.001

Credentials in Registry

1

T1552.002

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\SwiftRef_INV0880021122020.exe.log

Filesize
1KB

MD5
b7b9acb869ccc7f7ecb5304ec0384dee

SHA1
6a90751c95817903ee833d59a0abbef425a613b3

SHA256
8cb00a15cd942a1861c573d86d6fb430512c8e2f80f6349f48b16b8709ca7aa4

SHA512
7bec881ac5f59ac26f1be1e7e26d63f040c06369de10c1c246e531a4395d27c335d9acc647ecdedb48ed37bdc2dc405a4cfc11762e1c00659a49be259eaf8764

Download Submit
memory/3024-6-0x0000000005770000-0x000000000577A000-memory.dmp

Filesize
40KB

Download
memory/3024-2-0x00000000057E0000-0x0000000005D84000-memory.dmp

Filesize
5.6MB

Download
memory/3024-3-0x00000000052D0000-0x0000000005362000-memory.dmp

Filesize
584KB

Download
memory/3024-4-0x0000000005370000-0x00000000056C4000-memory.dmp

Filesize
3.3MB

Download
memory/3024-5-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/3024-16-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/3024-7-0x0000000005F60000-0x0000000005F74000-memory.dmp

Filesize
80KB

Download
memory/3024-8-0x000000007447E000-0x000000007447F000-memory.dmp

Filesize
4KB

Download
memory/3024-9-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/3024-10-0x00000000080E0000-0x000000000813C000-memory.dmp

Filesize
368KB

Download
memory/3024-11-0x00000000081E0000-0x000000000827C000-memory.dmp

Filesize
624KB

Download
memory/3024-0-0x000000007447E000-0x000000007447F000-memory.dmp

Filesize
4KB

Download
memory/3024-1-0x0000000000800000-0x0000000000874000-memory.dmp

Filesize
464KB

Download
memory/4756-12-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/4756-15-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4756-17-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4756-18-0x00000000064A0000-0x00000000064B8000-memory.dmp

Filesize
96KB

Download
memory/4756-19-0x0000000006540000-0x00000000065A6000-memory.dmp

Filesize
408KB

Download
memory/4756-20-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4756-21-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4756-22-0x0000000001580000-0x00000000015D0000-memory.dmp

Filesize
320KB

Download
memory/4756-23-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download
memory/4756-24-0x0000000074470000-0x0000000074C20000-memory.dmp

Filesize
7.7MB

Download

Analysis

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