umbral | 31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
11-11-2024 21:00

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General

Target

31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936.exe
Size

235KB
MD5

87dd9769f8dac6c5c8f6fb8cd36ba1db
SHA1

7cb356796d88dfa8e6a64b5fbcdd98ae6766a736
SHA256

31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936
SHA512

e14aad1acaea634a10c85137a6a5dd67de43837286474aa37088149e92c0c7090716e62414a8b212632d64e9d9a6bc5c070635ea935d7acd351b3ac1653f48a4
SSDEEP

6144:TloZM+rIkd8g+EtXHkv/iD4P4x+NbYMTiqL9Y0he/b8e1msi:RoZtL+EP8P4x+NbYMTiqL9Y0hom

Score

10^/10

umbral stealer

Malware Config

Signatures

Detect Umbral payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1776-1-0x00000000010F0000-0x0000000001130000-memory.dmp	family_umbral

Umbral
Umbral stealer is an opensource moduler stealer written in C#.
stealer umbral
Umbral family
umbral
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

6 ip-api.com

flow	ioc
6	ip-api.com

Suspicious use of AdjustPrivilegeToken 41 IoCs

Processes:

31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936.exewmic.exe

description	pid	process
Token: SeDebugPrivilege	1776	31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936.exe
Token: SeIncreaseQuotaPrivilege	2296	wmic.exe
Token: SeSecurityPrivilege	2296	wmic.exe
Token: SeTakeOwnershipPrivilege	2296	wmic.exe
Token: SeLoadDriverPrivilege	2296	wmic.exe
Token: SeSystemProfilePrivilege	2296	wmic.exe
Token: SeSystemtimePrivilege	2296	wmic.exe
Token: SeProfSingleProcessPrivilege	2296	wmic.exe
Token: SeIncBasePriorityPrivilege	2296	wmic.exe
Token: SeCreatePagefilePrivilege	2296	wmic.exe
Token: SeBackupPrivilege	2296	wmic.exe
Token: SeRestorePrivilege	2296	wmic.exe
Token: SeShutdownPrivilege	2296	wmic.exe
Token: SeDebugPrivilege	2296	wmic.exe
Token: SeSystemEnvironmentPrivilege	2296	wmic.exe
Token: SeRemoteShutdownPrivilege	2296	wmic.exe
Token: SeUndockPrivilege	2296	wmic.exe
Token: SeManageVolumePrivilege	2296	wmic.exe
Token: 33	2296	wmic.exe
Token: 34	2296	wmic.exe
Token: 35	2296	wmic.exe
Token: SeIncreaseQuotaPrivilege	2296	wmic.exe
Token: SeSecurityPrivilege	2296	wmic.exe
Token: SeTakeOwnershipPrivilege	2296	wmic.exe
Token: SeLoadDriverPrivilege	2296	wmic.exe
Token: SeSystemProfilePrivilege	2296	wmic.exe
Token: SeSystemtimePrivilege	2296	wmic.exe
Token: SeProfSingleProcessPrivilege	2296	wmic.exe
Token: SeIncBasePriorityPrivilege	2296	wmic.exe
Token: SeCreatePagefilePrivilege	2296	wmic.exe
Token: SeBackupPrivilege	2296	wmic.exe
Token: SeRestorePrivilege	2296	wmic.exe
Token: SeShutdownPrivilege	2296	wmic.exe
Token: SeDebugPrivilege	2296	wmic.exe
Token: SeSystemEnvironmentPrivilege	2296	wmic.exe
Token: SeRemoteShutdownPrivilege	2296	wmic.exe
Token: SeUndockPrivilege	2296	wmic.exe
Token: SeManageVolumePrivilege	2296	wmic.exe
Token: 33	2296	wmic.exe
Token: 34	2296	wmic.exe
Token: 35	2296	wmic.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936.exe

description	pid	process	target process
PID 1776 wrote to memory of 2296	1776	31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936.exe	wmic.exe
PID 1776 wrote to memory of 2296	1776	31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936.exe	wmic.exe
PID 1776 wrote to memory of 2296	1776	31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936.exe	wmic.exe

C:\Users\Admin\AppData\Local\Temp\31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936.exe
"C:\Users\Admin\AppData\Local\Temp\31c061c83666b251d96b66caf93b422948e3dfad205d1843dacfbd4ef8a21936.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1776
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2296

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1776-0-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

Filesize
4KB

Download
memory/1776-1-0x00000000010F0000-0x0000000001130000-memory.dmp

Filesize
256KB

Download
memory/1776-2-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/1776-3-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download