agenttesla | 339588e4f960ae3e7e34136aa2b5c348aeebf940cd7a205d05e93537336589c3

General

Target
P I pdf.exe
Size 411KB
Sample200626-lefhsf4eea
SHA256 339588e4f960ae3e7e34136aa2b5c348aeebf940cd7a205d05e93537336589c3
MD5 b500e4f348d1f2ed7d3225d460dd90fb
SHA1 420f47c499480d277962b5acd5259f14901dfd94
SHA512 98f07c77c99ac6c63049497a712678ec483542f399d0580b3ec4debc70767db4b39185c828a8a396c30a457fb1891ffa9dc9909f77f142fe6bc9a4d44565495c
MD5 SHA1 SHA512

Score

10^/10

Family

Credentials

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

AgentTesla Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3888-2-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral2/memory/3888-3-0x000000000044795E-mapping.dmp	family_agenttesla

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

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2066881839-3229799743-3576549721-1000\Software\Microsoft\Windows\CurrentVersion\Run\YYtJku = "C:\\Users\\Admin\\AppData\\Roaming\\YYtJku\\YYtJku.exe"	P I pdf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3536 set thread context of 3888	3536	P I pdf.exe	69

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

Scheduled Task

pid	Process
3804	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3888	P I pdf.exe
3888	P I pdf.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
3888	P I pdf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3888	P I pdf.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3536 wrote to memory of 3804	3536	P I pdf.exe	67
PID 3536 wrote to memory of 3804	3536	P I pdf.exe	67
PID 3536 wrote to memory of 3804	3536	P I pdf.exe	67
PID 3536 wrote to memory of 3888	3536	P I pdf.exe	69
PID 3536 wrote to memory of 3888	3536	P I pdf.exe	69
PID 3536 wrote to memory of 3888	3536	P I pdf.exe	69
PID 3536 wrote to memory of 3888	3536	P I pdf.exe	69
PID 3536 wrote to memory of 3888	3536	P I pdf.exe	69
PID 3536 wrote to memory of 3888	3536	P I pdf.exe	69
PID 3536 wrote to memory of 3888	3536	P I pdf.exe	69
PID 3536 wrote to memory of 3888	3536	P I pdf.exe	69

C:\Users\Admin\AppData\Local\Temp\P I pdf.exe
"C:\Users\Admin\AppData\Local\Temp\P I pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3536
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fQwVXbpjxowm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp72D9.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:3804
- C:\Users\Admin\AppData\Local\Temp\P I pdf.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  PID:3888