agenttesla | 69fd7fce357ff849a34d669c808cd75adbd9bdbe8999bc035d353a7f235c6169

General

Target
RFQ 17092018A.exe
Size 414KB
Sample200820-llz3pbaeea
SHA256 69fd7fce357ff849a34d669c808cd75adbd9bdbe8999bc035d353a7f235c6169
MD5 a13e6dd3515b7f1389a4bcb5ff150bcb
SHA1 f0f7c2c62fe197dfc97e5c5b6ec7d3c46dc24e24
SHA512 4f934d1dd78e407694676d586b52706418d46cd035c40cf39cfcd75a6953a30638cf4cfeb03b69c425e93d1065c9ed0ebaf0db9c3f8387704300c1e573d75e6c
MD5 SHA1 SHA512

Score

10^/10

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

AgentTesla Payload 7 IoCs

keylogger stealer

resource	yara_rule
behavioral1/memory/740-8-0x0000000000400000-0x000000000044C000-memory.dmp	agent_tesla
behavioral1/memory/740-8-0x0000000000400000-0x000000000044C000-memory.dmp	agent_tesla
behavioral1/memory/740-9-0x00000000004478DE-mapping.dmp	agent_tesla
behavioral1/memory/740-10-0x0000000000400000-0x000000000044C000-memory.dmp	agent_tesla
behavioral1/memory/740-10-0x0000000000400000-0x000000000044C000-memory.dmp	agent_tesla
behavioral1/memory/740-11-0x0000000000400000-0x000000000044C000-memory.dmp	agent_tesla
behavioral1/memory/740-11-0x0000000000400000-0x000000000044C000-memory.dmp	agent_tesla

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	RFQ 17092018A.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

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\gKWBf = "C:\\Users\\Admin\\AppData\\Roaming\\gKWBf\\gKWBf.exe"	RFQ 17092018A.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1116 set thread context of 740	1116	RFQ 17092018A.exe	26

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
108	schtasks.exe

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

pid	Process
1956	REG.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1116	RFQ 17092018A.exe
Token: SeDebugPrivilege	740	RFQ 17092018A.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 108	1116	RFQ 17092018A.exe	24
PID 1116 wrote to memory of 108	1116	RFQ 17092018A.exe	24
PID 1116 wrote to memory of 108	1116	RFQ 17092018A.exe	24
PID 1116 wrote to memory of 108	1116	RFQ 17092018A.exe	24
PID 1116 wrote to memory of 740	1116	RFQ 17092018A.exe	26
PID 1116 wrote to memory of 740	1116	RFQ 17092018A.exe	26
PID 1116 wrote to memory of 740	1116	RFQ 17092018A.exe	26
PID 1116 wrote to memory of 740	1116	RFQ 17092018A.exe	26
PID 1116 wrote to memory of 740	1116	RFQ 17092018A.exe	26
PID 1116 wrote to memory of 740	1116	RFQ 17092018A.exe	26
PID 1116 wrote to memory of 740	1116	RFQ 17092018A.exe	26
PID 1116 wrote to memory of 740	1116	RFQ 17092018A.exe	26
PID 1116 wrote to memory of 740	1116	RFQ 17092018A.exe	26
PID 740 wrote to memory of 1956	740	RFQ 17092018A.exe	30
PID 740 wrote to memory of 1956	740	RFQ 17092018A.exe	30
PID 740 wrote to memory of 1956	740	RFQ 17092018A.exe	30
PID 740 wrote to memory of 1956	740	RFQ 17092018A.exe	30

C:\Users\Admin\AppData\Local\Temp\RFQ 17092018A.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ 17092018A.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1116
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DToRkOn" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA707.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:108
- C:\Users\Admin\AppData\Local\Temp\RFQ 17092018A.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:740
- - C:\Windows\SysWOW64\REG.exe
    REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System / v DisableTaskMgr / t REG_DWORD / d 1 / f
    3⤵
    - Modifies registry key
    PID:1956