agenttesla | d1933850d05d345bc57356333ebe41446a5e1f7a7b09626a6906202f174852c1 | Triage

Analysis

max time kernel
130s
max time network
60s
platform
windows7_x64
resource
win7v20210410
submitted
30-07-2021 15:25

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General

Target

204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe
Size

854KB
MD5

7a15c195fb598e46a7d8ecef14ee24ee
SHA1

670daee05f85f7c30030bd12ae6dbb5c5bcce1cf
SHA256

204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8
SHA512

6b61a8931cb939c35e6fe3120cc6a32305d413497f5723444439b26dbfc5246f33dbc817c410270f022ee0d23f33ba29e20ef3c01784edb60ec2d3e213c7bebc

Score

10^/10

agenttesla keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

agenttesla

Credentials

Protocol: smtp
Host:
mail.ndn.edu.lb
Port:
587
Username:
[email protected]
Password:
Lebanon-Achrafieh-39

Signatures

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

AgentTesla Payload 3 IoCs

resource	yara_rule
behavioral12/memory/1404-68-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla
behavioral12/memory/1404-69-0x000000000043762E-mapping.dmp	family_agenttesla
behavioral12/memory/1404-70-0x0000000000400000-0x000000000043C000-memory.dmp	family_agenttesla

Drops file in Drivers directory 1 IoCs

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

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\NXLun = "C:\\Users\\Admin\\AppData\\Roaming\\NXLun\\NXLun.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1776 set thread context of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31

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.

Scheduled Task

pid	Process
560	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe
1404	RegSvcs.exe
1404	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe
Token: SeDebugPrivilege	1404	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1776 wrote to memory of 560	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	29
PID 1776 wrote to memory of 560	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	29
PID 1776 wrote to memory of 560	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	29
PID 1776 wrote to memory of 560	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	29
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31
PID 1776 wrote to memory of 1404	1776	204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe	31

C:\Users\Admin\AppData\Local\Temp\204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe
"C:\Users\Admin\AppData\Local\Temp\204591aa6d44da7eef69d7ee3d32a9b4cb8e405a575fc3cbcf2d5e0217879cb8.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\nGPZodGLvz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4FB6.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:560
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "{path}"
  2⤵
  - Drops file in Drivers directory
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1404

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Modify Registry

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1404-68-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1404-70-0x0000000000400000-0x000000000043C000-memory.dmp

Filesize
240KB

Download
memory/1404-72-0x00000000006E0000-0x00000000006E1000-memory.dmp

Filesize
4KB

Download
memory/1404-73-0x00000000006E1000-0x00000000006E2000-memory.dmp

Filesize
4KB

Download
memory/1776-60-0x0000000000C60000-0x0000000000C61000-memory.dmp

Filesize
4KB

Download
memory/1776-62-0x00000000071D0000-0x00000000071D1000-memory.dmp

Filesize
4KB

Download
memory/1776-63-0x0000000000390000-0x0000000000392000-memory.dmp

Filesize
8KB

Download
memory/1776-64-0x0000000007A30000-0x0000000007AB8000-memory.dmp

Filesize
544KB

Download
memory/1776-65-0x00000000007A0000-0x00000000007E4000-memory.dmp

Filesize
272KB

Download