agenttesla | 09535b3006755b42482262b04d2e68c696ce132b4c4cef30a6d9e139ed888cd2

Analysis

max time kernel
84s
max time network
80s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
09/02/2023, 21:30

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General

Target
SOA.exe
Size 753KB
Sample230209-1cg11sef21
SHA256 09535b3006755b42482262b04d2e68c696ce132b4c4cef30a6d9e139ed888cd2
MD5 de4858508e90c545f5b76cae064697a4
SHA1 de91e2022e96f848a669d93605336922258db414
SHA512 6ff313078e615fcd28d10cec6b09aec49e64f6efef3d7a15e28de26f821908d37a77772068c85a3ec9eafa665eff85b5d648bc8de4fa2d25a964cde825bf58ee
SSDEEP 12288:3f1NDne7f4WYMTyPdLX2tuCAe/ZXWndc0F8bzDwV4xeZiP3vKrfa4pca4z:3T7MTyPdLX2tuCAe/ZXgdDF4z86xaiKm
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot1644755040:AAGRTnph6BdO8-t1bJaOyVu9aeuJErmisqs/sendDocument

Signatures

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

Drops file in Drivers directory 1 IoCs

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

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.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-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\yqWDN = "C:\\Users\\Admin\\AppData\\Roaming\\yqWDN\\yqWDN.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1620 set thread context of 1924	1620	SOA.exe	29

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.

persistence

Scheduled Task

T1053

pid	Process
2044	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1620	SOA.exe
1924	RegSvcs.exe
1924	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1620	SOA.exe
Token: SeDebugPrivilege	1924	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 2044	1620	SOA.exe	27
PID 1620 wrote to memory of 2044	1620	SOA.exe	27
PID 1620 wrote to memory of 2044	1620	SOA.exe	27
PID 1620 wrote to memory of 2044	1620	SOA.exe	27
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29
PID 1620 wrote to memory of 1924	1620	SOA.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\SOA.exe
"C:\Users\Admin\AppData\Local\Temp\SOA.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\pHfjYaYnaO" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCF90.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2044
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

tmpCF90.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpCF90.tmp
Size 1KB
SHA256 6797bab1c4191919cba37d9a5bdef056f5742a2a00e8078480046e42d1e9be9d
MD5 8f1a95b6c6b045f39f761426d96443a2
SHA1 5dbdddd502fa904aedb6c395b46e6852fe0d407a
SHA512 f7d11d345ededc56fb1ba255e4629d18e165fddbe51837dbf3dc064f9da3ea6da954e569da7c73077d3c0642f8d0536ac948922351e88e50395e665243c950b1
MD5 SHA1 SHA512

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memory/1620-57-0x00000000058E0000-0x000000000595A000-memory.dmp

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memory/1620-55-0x0000000075D01000-0x0000000075D03000-memory.dmp

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memory/1620-54-0x0000000000A40000-0x0000000000B02000-memory.dmp

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memory/1620-58-0x0000000004370000-0x00000000043AC000-memory.dmp

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memory/1620-56-0x0000000000480000-0x000000000048E000-memory.dmp

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memory/1924-66-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1924-61-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1924-62-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1924-64-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1924-65-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1924-69-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/1924-71-0x0000000000400000-0x000000000043A000-memory.dmp

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