agenttesla | 5dcc9c1e15ffe2b5443d07490a733e9167ef47fed99cc3d494bf7674e9e472d0

General

Target
PO# AO-200402_pdf.gz.exe
Size 1.4MB
Sample201109-89r7ksfqt2
SHA256 5dcc9c1e15ffe2b5443d07490a733e9167ef47fed99cc3d494bf7674e9e472d0
MD5 e7405dfccea1a169e94585d83cbf283b
SHA1 80b700cbc0d8b8213618926bf84b4c5d4546c79d
SHA512 a61de955e040825504b909649190373196847090817133870895a19fe721a363ab5754e5dd0744e52a3d5a90e49295f651d9344fca3a08b8923e335dbb4b6d0b
MD5 SHA1 SHA512

Score

10^/10

agenttesla evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol
smtp
Host
mail.parshavayealborz.com
Port
587
Username
[email protected]
Password
P@rshava123456

Signatures

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

AgentTesla Payload 14 IoCs

resource	yara_rule
behavioral2/memory/196-1-0x0000000000400000-0x0000000000452000-memory.dmp	family_agenttesla
behavioral2/memory/196-2-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-13-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-12-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-15-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-14-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-16-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-17-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-18-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-19-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-22-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-21-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-23-0x000000000044C43E-mapping.dmp	family_agenttesla
behavioral2/memory/196-20-0x000000000044C43E-mapping.dmp	family_agenttesla

Disables Task Manager via registry modification
evasion

Drops file in Drivers directory 1 IoCs

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

Drops startup file 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ieUnatt.url	PO# AO-200402_pdf.gz.exe

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-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\CpSnJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\CpSnJ\\CpSnJ.exe"	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 648 set thread context of 196	648	PO# AO-200402_pdf.gz.exe	78

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2220	196	WerFault.exe	78

Modifies registry key 1 TTPs 1 IoCs

Modify Registry

T1112

pid	Process
1844	REG.exe

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
196	MSBuild.exe
196	MSBuild.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe
2220	WerFault.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	196	MSBuild.exe
Token: SeRestorePrivilege	2220	WerFault.exe
Token: SeBackupPrivilege	2220	WerFault.exe
Token: SeDebugPrivilege	2220	WerFault.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
648	PO# AO-200402_pdf.gz.exe
648	PO# AO-200402_pdf.gz.exe
648	PO# AO-200402_pdf.gz.exe

Suspicious use of SendNotifyMessage 3 IoCs

pid	Process
648	PO# AO-200402_pdf.gz.exe
648	PO# AO-200402_pdf.gz.exe
648	PO# AO-200402_pdf.gz.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 648 wrote to memory of 196	648	PO# AO-200402_pdf.gz.exe	78
PID 648 wrote to memory of 196	648	PO# AO-200402_pdf.gz.exe	78
PID 648 wrote to memory of 196	648	PO# AO-200402_pdf.gz.exe	78
PID 648 wrote to memory of 196	648	PO# AO-200402_pdf.gz.exe	78
PID 648 wrote to memory of 196	648	PO# AO-200402_pdf.gz.exe	78
PID 196 wrote to memory of 1844	196	MSBuild.exe	81
PID 196 wrote to memory of 1844	196	MSBuild.exe	81
PID 196 wrote to memory of 1844	196	MSBuild.exe	81

C:\Users\Admin\AppData\Local\Temp\PO# AO-200402_pdf.gz.exe
"C:\Users\Admin\AppData\Local\Temp\PO# AO-200402_pdf.gz.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:648
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "C:\\\\Windows\\\\Microsoft.NET\\\\Framework\\\\v4.0.30319\\\\MSBuild.exe"
  2⤵
  - Drops file in Drivers directory
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:196
- - 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:1844
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 196 -s 1488
    3⤵
    - Program crash
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2220

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/196-3-0x0000000073B60000-0x000000007424E000-memory.dmp

Download

memory/196-4-0x0000000000400000-0x0000000000401000-memory.dmp

Download

memory/196-6-0x0000000005A70000-0x0000000005A71000-memory.dmp

Download

memory/196-7-0x0000000005420000-0x0000000005421000-memory.dmp

Download

memory/196-8-0x0000000005400000-0x0000000005401000-memory.dmp

Download

memory/196-9-0x0000000005F70000-0x0000000005F71000-memory.dmp

Download

memory/196-1-0x0000000000400000-0x0000000000452000-memory.dmp

Download

memory/2220-11-0x0000000004C10000-0x0000000004C11000-memory.dmp

Download

memory/2220-24-0x0000000005340000-0x0000000005341000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads