agenttesla | 3f4e15f0e6b88a297c868614ba450237dba01adf2ffa25b83c065dec46bc1edf

General

Target
ThursBisQuit.exe
Size 651KB
Sample200730-s7qpgjkerx
SHA256 3f4e15f0e6b88a297c868614ba450237dba01adf2ffa25b83c065dec46bc1edf
MD5 768a9fd5debbb33838521cbbe8994518
SHA1 bbbad82d1a8aa65c67620462f846108899d67f05
SHA512 1a7655da2ab5ccc2c26d79c9654af64b2953dd1d25433fac0f03db4745e43ba4948336e08b36ae3f46af85cf5ff89916c87ba4fc101e2e06c1851ac0094d550d
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.ionos.com
Port
587
Username
[email protected]
Password
iNfo@No0120

Signatures

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

AgentTesla Payload 4 IoCs

resource	yara_rule
behavioral1/memory/1812-4-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1812-5-0x0000000000446E7E-mapping.dmp	family_agenttesla
behavioral1/memory/1812-7-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1812-8-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Executes dropped EXE 1 IoCs

pid	Process
1812	AddInProcess32.exe

Loads dropped DLL 1 IoCs

pid	Process
1332	ThursBisQuit.exe

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware

Data from Local System
T1005

Credentials in Files
T1081
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

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2090973689-680783404-4292415065-1000\Software\Microsoft\Windows\CurrentVersion\Run\Bisquit20 = "C:\\Users\\Admin\\AppData\\Roaming\\Bisquit20\\Bisquit20.exe"	AddInProcess32.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1332 set thread context of 1812	1332	ThursBisQuit.exe	26

Program crash 1 IoCs

pid	pid_target	Process	procid_target
732	1332	WerFault.exe	23

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1332	ThursBisQuit.exe
1332	ThursBisQuit.exe
1332	ThursBisQuit.exe
732	WerFault.exe
732	WerFault.exe
732	WerFault.exe
732	WerFault.exe
732	WerFault.exe
1812	AddInProcess32.exe
1812	AddInProcess32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1332	ThursBisQuit.exe
Token: SeDebugPrivilege	732	WerFault.exe
Token: SeDebugPrivilege	1812	AddInProcess32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1812	AddInProcess32.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1332 wrote to memory of 1812	1332	ThursBisQuit.exe	26
PID 1332 wrote to memory of 1812	1332	ThursBisQuit.exe	26
PID 1332 wrote to memory of 1812	1332	ThursBisQuit.exe	26
PID 1332 wrote to memory of 1812	1332	ThursBisQuit.exe	26
PID 1332 wrote to memory of 1812	1332	ThursBisQuit.exe	26
PID 1332 wrote to memory of 1812	1332	ThursBisQuit.exe	26
PID 1332 wrote to memory of 1812	1332	ThursBisQuit.exe	26
PID 1332 wrote to memory of 1812	1332	ThursBisQuit.exe	26
PID 1332 wrote to memory of 1812	1332	ThursBisQuit.exe	26
PID 1332 wrote to memory of 732	1332	ThursBisQuit.exe	27
PID 1332 wrote to memory of 732	1332	ThursBisQuit.exe	27
PID 1332 wrote to memory of 732	1332	ThursBisQuit.exe	27
PID 1332 wrote to memory of 732	1332	ThursBisQuit.exe	27

C:\Users\Admin\AppData\Local\Temp\ThursBisQuit.exe
"C:\Users\Admin\AppData\Local\Temp\ThursBisQuit.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1332
- C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe
  "C:\Users\Admin\AppData\Local\Temp\AddInProcess32.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1332 -s 792
  2⤵
  - Program crash
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:732

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/732-11-0x00000000008E0000-0x00000000008F1000-memory.dmp

Download

memory/732-14-0x0000000002760000-0x0000000002771000-memory.dmp

Download

memory/1812-4-0x0000000000400000-0x000000000044C000-memory.dmp

Download

memory/1812-7-0x0000000000400000-0x000000000044C000-memory.dmp

Download

memory/1812-8-0x0000000000400000-0x000000000044C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads