agenttesla | 0fb739ef1d92cb9e84d30184e289bdcc2e1d851d302e69665d34ce9768c3ddbc

General

Target
RFQ4638B.exe
Size 724KB
Sample200720-lrhpd28xps
SHA256 0fb739ef1d92cb9e84d30184e289bdcc2e1d851d302e69665d34ce9768c3ddbc
MD5 9ccf791b69627a16345255c782d75795
SHA1 034c7ea6739bfb0a5668bca7feb3f99c478f4c54
SHA512 86ad1c5dc6d31ae2b9f9a4b20fe43962eaf5c848bf51482898ec928f859dfcc3c090ca0d7bdc23eb48b0ddb39a672c98ecc2179cf6de9ee135b7f3e29c29e60d
MD5 SHA1 SHA512

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
smtp.yandex.com
Port
587
Username
[email protected]
Password
benneth1975

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/1668-12-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1668-13-0x00000000004466FE-mapping.dmp	family_agenttesla
behavioral1/memory/1668-15-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1668-16-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Executes dropped EXE 2 IoCs

pid	Process
756	intel.exe
1668	intel.exe

Loads dropped DLL 1 IoCs

pid	Process
1500	RFQ4638B.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 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run\intel = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Templates\\intel.exe"	reg.exe
Key created	\REGISTRY\USER\S-1-5-21-910373003-3952921535-3480519689-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 756 set thread context of 1668	756	intel.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1500	RFQ4638B.exe
1500	RFQ4638B.exe
1500	RFQ4638B.exe
756	intel.exe
756	intel.exe
756	intel.exe
1668	intel.exe
1668	intel.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1500	RFQ4638B.exe
Token: SeDebugPrivilege	756	intel.exe
Token: SeDebugPrivilege	1668	intel.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1668	intel.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1500 wrote to memory of 1688	1500	RFQ4638B.exe	24
PID 1500 wrote to memory of 1688	1500	RFQ4638B.exe	24
PID 1500 wrote to memory of 1688	1500	RFQ4638B.exe	24
PID 1500 wrote to memory of 1688	1500	RFQ4638B.exe	24
PID 1688 wrote to memory of 1216	1688	cmd.exe	26
PID 1688 wrote to memory of 1216	1688	cmd.exe	26
PID 1688 wrote to memory of 1216	1688	cmd.exe	26
PID 1688 wrote to memory of 1216	1688	cmd.exe	26
PID 1500 wrote to memory of 756	1500	RFQ4638B.exe	29
PID 1500 wrote to memory of 756	1500	RFQ4638B.exe	29
PID 1500 wrote to memory of 756	1500	RFQ4638B.exe	29
PID 1500 wrote to memory of 756	1500	RFQ4638B.exe	29
PID 756 wrote to memory of 1668	756	intel.exe	30
PID 756 wrote to memory of 1668	756	intel.exe	30
PID 756 wrote to memory of 1668	756	intel.exe	30
PID 756 wrote to memory of 1668	756	intel.exe	30
PID 756 wrote to memory of 1668	756	intel.exe	30
PID 756 wrote to memory of 1668	756	intel.exe	30
PID 756 wrote to memory of 1668	756	intel.exe	30
PID 756 wrote to memory of 1668	756	intel.exe	30
PID 756 wrote to memory of 1668	756	intel.exe	30

C:\Users\Admin\AppData\Local\Temp\RFQ4638B.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ4638B.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v intel /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\intel.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1688
- - C:\Windows\SysWOW64\reg.exe
    REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v intel /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\intel.exe"
    3⤵
    - Adds Run key to start application
    PID:1216
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\intel.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\intel.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:756
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\intel.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\intel.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:1668