agenttesla | 3f77323ca44e9fdb70ea05be1bc7814ed7ae78be087363619a2f6bef4bb9bff9

General

Target
QUOTATION.exe
Size 750KB
Sample221018-whfb6agfa4
SHA256 3f77323ca44e9fdb70ea05be1bc7814ed7ae78be087363619a2f6bef4bb9bff9
MD5 5df938850b621ec1b54fd646b1076b26
SHA1 e164b60e1bcc721198fea251f312712ad2d6808c
SHA512 033cf9819e5c4be6e6093ee32d2df99ac252920d5ac30852238ed8dcccd886707f35a6066223d6430a45ff6e347363d0d44630984d4bdcc246c4ddd6193e08df
SSDEEP 12288:/AyTM2H5zdr5qN2YteKIt2LLeVpnnwP2OWNrkk:N/C7tIeiD62OWNrkk
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	QUOTATION.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KFWOdr = "C:\\Users\\Admin\\AppData\\Roaming\\KFWOdr\\KFWOdr.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3928 set thread context of 3512	3928	QUOTATION.exe	93

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
4516	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3928	QUOTATION.exe
3512	RegSvcs.exe
3512	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3928	QUOTATION.exe
Token: SeDebugPrivilege	3512	RegSvcs.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3928	QUOTATION.exe
3928	QUOTATION.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3928 wrote to memory of 4516	3928	QUOTATION.exe	91
PID 3928 wrote to memory of 4516	3928	QUOTATION.exe	91
PID 3928 wrote to memory of 4516	3928	QUOTATION.exe	91
PID 3928 wrote to memory of 3512	3928	QUOTATION.exe	93
PID 3928 wrote to memory of 3512	3928	QUOTATION.exe	93
PID 3928 wrote to memory of 3512	3928	QUOTATION.exe	93
PID 3928 wrote to memory of 3512	3928	QUOTATION.exe	93
PID 3928 wrote to memory of 3512	3928	QUOTATION.exe	93
PID 3928 wrote to memory of 3512	3928	QUOTATION.exe	93
PID 3928 wrote to memory of 3512	3928	QUOTATION.exe	93
PID 3928 wrote to memory of 3512	3928	QUOTATION.exe	93

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe
"C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3928
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\ChoyNvaraab" /XML "C:\Users\Admin\AppData\Local\Temp\tmpD67F.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4516
- 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:3512

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

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Downloads

tmpD67F.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpD67F.tmp
Size 1KB
SHA256 fd25b1e4a7e22cf8f173435a0af1f99b49c32d70b085018be0d1135929b9668a
MD5 15b29eb36c3b5fa6b11ffb78df27b471
SHA1 b0a23e347d7fd93a7a70929bd466209b17345b2d
SHA512 3e4a46ecec411be9e6d6800d1d8bae0654d6d8aabb0839ac495d333a9a07aa93bc7102fec8e6d22d583d474d144082c3d781842dec72659c5686359a08631f96
MD5 SHA1 SHA512

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memory/3512-140-0x0000000000400000-0x000000000043A000-memory.dmp

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memory/3512-141-0x0000000006190000-0x00000000061F6000-memory.dmp

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memory/3512-142-0x0000000006780000-0x00000000067D0000-memory.dmp

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memory/3928-132-0x0000000000A90000-0x0000000000B52000-memory.dmp

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memory/3928-133-0x0000000005990000-0x0000000005F34000-memory.dmp

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memory/3928-134-0x00000000054E0000-0x0000000005572000-memory.dmp

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memory/3928-135-0x0000000005620000-0x00000000056BC000-memory.dmp

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memory/3928-136-0x00000000055A0000-0x00000000055AA000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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