agenttesla | da1621ccdb3714c1fda08f6e783ff18962e4803fff14b3095d3e260c26642648

General

Target
triage_dropped_file.exe
Size 1.1MB
Sample210830-pb892vewt6
SHA256 da1621ccdb3714c1fda08f6e783ff18962e4803fff14b3095d3e260c26642648
MD5 f5bbe08ae98556abd753b479ce939e44
SHA1 4a4da0c67274da65e0ea70e8d2ad8a5f56c7cc62
SHA512 2b78030da82367b432a19c1a458d385df62b5dd8e6e83096cd8a515e84905d9d314a873a60276c419cc3233c2e5e95f9a07326347993a22231b8703e01d48f99
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 3 IoCs

resource	yara_rule
behavioral1/memory/1592-68-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral1/memory/1592-69-0x000000000043772E-mapping.dmp	family_agenttesla
behavioral1/memory/1592-70-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	triage_dropped_file.exe

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
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 stealer

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 stealer

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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\gqxRqp = "C:\\Users\\Admin\\AppData\\Roaming\\gqxRqp\\gqxRqp.exe"	triage_dropped_file.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1080 set thread context of 1592	1080	triage_dropped_file.exe	31

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
1232	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1592	triage_dropped_file.exe
1592	triage_dropped_file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1592	triage_dropped_file.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1080 wrote to memory of 1232	1080	triage_dropped_file.exe	29
PID 1080 wrote to memory of 1232	1080	triage_dropped_file.exe	29
PID 1080 wrote to memory of 1232	1080	triage_dropped_file.exe	29
PID 1080 wrote to memory of 1232	1080	triage_dropped_file.exe	29
PID 1080 wrote to memory of 1592	1080	triage_dropped_file.exe	31
PID 1080 wrote to memory of 1592	1080	triage_dropped_file.exe	31
PID 1080 wrote to memory of 1592	1080	triage_dropped_file.exe	31
PID 1080 wrote to memory of 1592	1080	triage_dropped_file.exe	31
PID 1080 wrote to memory of 1592	1080	triage_dropped_file.exe	31
PID 1080 wrote to memory of 1592	1080	triage_dropped_file.exe	31
PID 1080 wrote to memory of 1592	1080	triage_dropped_file.exe	31
PID 1080 wrote to memory of 1592	1080	triage_dropped_file.exe	31
PID 1080 wrote to memory of 1592	1080	triage_dropped_file.exe	31

C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe
"C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VNJCPdLEb" /XML "C:\Users\Admin\AppData\Local\Temp\tmp50CE.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1232
- C:\Users\Admin\AppData\Local\Temp\triage_dropped_file.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1592