agenttesla | b465cbf1ef48634340d4f477ccdcdf13cb7c8e14e316aa33988ec9212b0188fb

Analysis

max time kernel
145s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-en-20220113
submitted
18/03/2022, 15:00

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General

Target
MT700.exe
Size 789KB
Sample220318-sdchxsbahj
SHA256 b465cbf1ef48634340d4f477ccdcdf13cb7c8e14e316aa33988ec9212b0188fb
MD5 72bd7b080a3e1f7998587325de785826
SHA1 5ea3893ac42861771771d734474a4505b08f1792
SHA512 6f157ea5e31945682d35d862732aaf05a5920c69fc414ff303c2bcbfe4980b2f7087d81bed2077d4150a4cc86ea6e9e7013b6083f6e1bcd45841b6292a2af338
MD5 SHA1 SHA512

Score

10^/10

agenttesla collection keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

https://api.telegram.org/bot5229864731:AAEV0jOLrI_tfLx-WLBXsih1ys_6gsK9KBg/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

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-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	MT700.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\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-1-5-21-1346565761-3498240568-4147300184-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\kECjS = "C:\\Users\\Admin\\AppData\\Roaming\\kECjS\\kECjS.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1516 set thread context of 2932	1516	MT700.exe	91

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
4908	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1516	MT700.exe
1516	MT700.exe
1516	MT700.exe
2932	RegSvcs.exe
2932	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1516	MT700.exe
Token: SeDebugPrivilege	2932	RegSvcs.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1516 wrote to memory of 4908	1516	MT700.exe	88
PID 1516 wrote to memory of 4908	1516	MT700.exe	88
PID 1516 wrote to memory of 4908	1516	MT700.exe	88
PID 1516 wrote to memory of 2992	1516	MT700.exe	90
PID 1516 wrote to memory of 2992	1516	MT700.exe	90
PID 1516 wrote to memory of 2992	1516	MT700.exe	90
PID 1516 wrote to memory of 2932	1516	MT700.exe	91
PID 1516 wrote to memory of 2932	1516	MT700.exe	91
PID 1516 wrote to memory of 2932	1516	MT700.exe	91
PID 1516 wrote to memory of 2932	1516	MT700.exe	91
PID 1516 wrote to memory of 2932	1516	MT700.exe	91
PID 1516 wrote to memory of 2932	1516	MT700.exe	91
PID 1516 wrote to memory of 2932	1516	MT700.exe	91
PID 1516 wrote to memory of 2932	1516	MT700.exe	91

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\MT700.exe
"C:\Users\Admin\AppData\Local\Temp\MT700.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zLcazZpkjxys" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE184.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4908
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  PID:2992
- 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:2932

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

memory/1516-136-0x0000000005230000-0x0000000005286000-memory.dmp

Download

memory/1516-131-0x0000000005080000-0x000000000511C000-memory.dmp

Download

memory/1516-133-0x0000000005190000-0x0000000005222000-memory.dmp

Download

memory/1516-134-0x0000000074770000-0x0000000074F20000-memory.dmp

Download

memory/1516-135-0x0000000002BE0000-0x0000000002BEA000-memory.dmp

Download

memory/1516-130-0x00000000005D0000-0x000000000069A000-memory.dmp

Download

memory/1516-137-0x0000000005190000-0x0000000005734000-memory.dmp

Download

memory/1516-132-0x0000000005740000-0x0000000005CE4000-memory.dmp

Download

memory/2932-139-0x0000000000400000-0x000000000043A000-memory.dmp

Download

memory/2932-140-0x0000000074770000-0x0000000074F20000-memory.dmp

Download

memory/2932-141-0x00000000063D0000-0x0000000006436000-memory.dmp

Download

memory/2932-142-0x0000000005530000-0x0000000005AD4000-memory.dmp

Download

memory/2932-143-0x0000000006990000-0x00000000069E0000-memory.dmp

Download

memory/2932-144-0x0000000005530000-0x0000000005AD4000-memory.dmp

Download