umbral | c85d06f1b43bef037664498eb6573214a314cacb174d1e97a9482410bc62376f

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-02-2025 14:14

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General

Target

2720-108-0x0000000000810000-0x0000000000BB6000-memory.exe
Size

3.6MB
MD5

4de9b1a267f2d657eb204fc996293cdb
SHA1

70216acc66c0a6f4d79a2238137223eebcc4979f
SHA256

c85d06f1b43bef037664498eb6573214a314cacb174d1e97a9482410bc62376f
SHA512

b4918d5687315f04ea2e20762f47c957d15f77ae2675c2c0114e055fab4be2ef23151f8dee3e943fce550b580d29aade2d15d405b3796014a6f1d1721b25caff
SSDEEP

49152:ePWbhwss+52eagTpIR5QFP0rdKWW9DE5Tl+qKlLdSh:eP2hsv94I08MWW9DShKlLUh

Score

10^/10

umbral stealer

Malware Config

Extracted

Family

umbral

https://discord.com/api/webhooks/1339207974182191194/Cbspp1D1YgKvkqPsxxLAOiahYoeW0ceIteSYlYtjG202TSZnR-Kj6vR7I8pJsgFtUunb

Signatures

Detect Umbral payload 1 IoCs

resource	yara_rule
behavioral1/memory/2364-1-0x0000000001520000-0x00000000018C6000-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.

flow	ioc
6	ip-api.com

Suspicious use of AdjustPrivilegeToken 41 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	2720-108-0x0000000000810000-0x0000000000BB6000-memory.exe
Token: SeIncreaseQuotaPrivilege	2600	wmic.exe
Token: SeSecurityPrivilege	2600	wmic.exe
Token: SeTakeOwnershipPrivilege	2600	wmic.exe
Token: SeLoadDriverPrivilege	2600	wmic.exe
Token: SeSystemProfilePrivilege	2600	wmic.exe
Token: SeSystemtimePrivilege	2600	wmic.exe
Token: SeProfSingleProcessPrivilege	2600	wmic.exe
Token: SeIncBasePriorityPrivilege	2600	wmic.exe
Token: SeCreatePagefilePrivilege	2600	wmic.exe
Token: SeBackupPrivilege	2600	wmic.exe
Token: SeRestorePrivilege	2600	wmic.exe
Token: SeShutdownPrivilege	2600	wmic.exe
Token: SeDebugPrivilege	2600	wmic.exe
Token: SeSystemEnvironmentPrivilege	2600	wmic.exe
Token: SeRemoteShutdownPrivilege	2600	wmic.exe
Token: SeUndockPrivilege	2600	wmic.exe
Token: SeManageVolumePrivilege	2600	wmic.exe
Token: 33	2600	wmic.exe
Token: 34	2600	wmic.exe
Token: 35	2600	wmic.exe
Token: SeIncreaseQuotaPrivilege	2600	wmic.exe
Token: SeSecurityPrivilege	2600	wmic.exe
Token: SeTakeOwnershipPrivilege	2600	wmic.exe
Token: SeLoadDriverPrivilege	2600	wmic.exe
Token: SeSystemProfilePrivilege	2600	wmic.exe
Token: SeSystemtimePrivilege	2600	wmic.exe
Token: SeProfSingleProcessPrivilege	2600	wmic.exe
Token: SeIncBasePriorityPrivilege	2600	wmic.exe
Token: SeCreatePagefilePrivilege	2600	wmic.exe
Token: SeBackupPrivilege	2600	wmic.exe
Token: SeRestorePrivilege	2600	wmic.exe
Token: SeShutdownPrivilege	2600	wmic.exe
Token: SeDebugPrivilege	2600	wmic.exe
Token: SeSystemEnvironmentPrivilege	2600	wmic.exe
Token: SeRemoteShutdownPrivilege	2600	wmic.exe
Token: SeUndockPrivilege	2600	wmic.exe
Token: SeManageVolumePrivilege	2600	wmic.exe
Token: 33	2600	wmic.exe
Token: 34	2600	wmic.exe
Token: 35	2600	wmic.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2364 wrote to memory of 2600	2364	2720-108-0x0000000000810000-0x0000000000BB6000-memory.exe	31
PID 2364 wrote to memory of 2600	2364	2720-108-0x0000000000810000-0x0000000000BB6000-memory.exe	31
PID 2364 wrote to memory of 2600	2364	2720-108-0x0000000000810000-0x0000000000BB6000-memory.exe	31

C:\Users\Admin\AppData\Local\Temp\2720-108-0x0000000000810000-0x0000000000BB6000-memory.exe
"C:\Users\Admin\AppData\Local\Temp\2720-108-0x0000000000810000-0x0000000000BB6000-memory.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2364
- C:\Windows\System32\Wbem\wmic.exe
  "wmic.exe" csproduct get uuid
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2600

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/2364-0-0x000007FEF4FC3000-0x000007FEF4FC4000-memory.dmp

Filesize
4KB

Download
memory/2364-1-0x0000000001520000-0x00000000018C6000-memory.dmp

Filesize
3.6MB

Download
memory/2364-2-0x000007FEF4FC0000-0x000007FEF59AC000-memory.dmp

Filesize
9.9MB

Download
memory/2364-3-0x000007FEF4FC3000-0x000007FEF4FC4000-memory.dmp

Filesize
4KB

Download
memory/2364-4-0x000007FEF4FC0000-0x000007FEF59AC000-memory.dmp

Filesize
9.9MB

Download
memory/2364-5-0x000007FEF4FC0000-0x000007FEF59AC000-memory.dmp

Filesize
9.9MB

Download