Analysis
- max time kernel
1s - max time network
14s - platform
windows11-21h2_x64 - resource
win11-20231215-en - resource tags
arch:x64arch:x86image:win11-20231215-enlocale:en-usos:windows11-21h2-x64system - submitted
05/02/2024, 10:00
Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20231215-en
windows7-x64
4 signatures
300 seconds
Behavioral task
behavioral2
Sample
Umbral.exe
Resource
win10-20231215-en
windows10-1703-x64
4 signatures
300 seconds
Behavioral task
behavioral3
Sample
Umbral.exe
Resource
win10v2004-20231215-en
windows10-2004-x64
4 signatures
300 seconds
General
- Target Umbral.exe
- Size 231KB
- Sample240205-l16lysfdam
- SHA256 5e0dce9978369a90f9380c4630f79b2801dd0251f699bee7d7b85f43c51f027e
- MD5 2bd5664afed4d5821041e61b19f55a30
- SHA1 8d0f1ea431c0e00b39898a05f4ae37ac55800703
- SHA512 991066a886a2fd36246d1fe88a7c62cb6672a7c8821c94a4b1c8df650968a39aa0f1519451d569b9b478a30cd3465fda32da69816b5ce86bd95ccd9a7d781fe7
- SSDEEP 6144:RloZM+rIkd8g+EtXHkv/iD4+B/RkqNlOcLWU1pAN8b8e1mKi:joZtL+EP8+B/RkqNlOcLWU1pAa4
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detect Umbral payload 1 IoCs
resource yara_rule behavioral4/memory/2792-0-0x00000148FBCE0000-0x00000148FBD20000-memory.dmp family_umbral - Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 2792 Umbral.exe Token: SeIncreaseQuotaPrivilege 1784 wmic.exe Token: SeSecurityPrivilege 1784 wmic.exe Token: SeTakeOwnershipPrivilege 1784 wmic.exe Token: SeLoadDriverPrivilege 1784 wmic.exe Token: SeSystemProfilePrivilege 1784 wmic.exe Token: SeSystemtimePrivilege 1784 wmic.exe Token: SeProfSingleProcessPrivilege 1784 wmic.exe Token: SeIncBasePriorityPrivilege 1784 wmic.exe Token: SeCreatePagefilePrivilege 1784 wmic.exe Token: SeBackupPrivilege 1784 wmic.exe Token: SeRestorePrivilege 1784 wmic.exe Token: SeShutdownPrivilege 1784 wmic.exe Token: SeDebugPrivilege 1784 wmic.exe Token: SeSystemEnvironmentPrivilege 1784 wmic.exe Token: SeRemoteShutdownPrivilege 1784 wmic.exe Token: SeUndockPrivilege 1784 wmic.exe Token: SeManageVolumePrivilege 1784 wmic.exe Token: 33 1784 wmic.exe Token: 34 1784 wmic.exe Token: 35 1784 wmic.exe Token: 36 1784 wmic.exe Token: SeIncreaseQuotaPrivilege 1784 wmic.exe Token: SeSecurityPrivilege 1784 wmic.exe Token: SeTakeOwnershipPrivilege 1784 wmic.exe Token: SeLoadDriverPrivilege 1784 wmic.exe Token: SeSystemProfilePrivilege 1784 wmic.exe Token: SeSystemtimePrivilege 1784 wmic.exe Token: SeProfSingleProcessPrivilege 1784 wmic.exe Token: SeIncBasePriorityPrivilege 1784 wmic.exe Token: SeCreatePagefilePrivilege 1784 wmic.exe Token: SeBackupPrivilege 1784 wmic.exe Token: SeRestorePrivilege 1784 wmic.exe Token: SeShutdownPrivilege 1784 wmic.exe Token: SeDebugPrivilege 1784 wmic.exe Token: SeSystemEnvironmentPrivilege 1784 wmic.exe Token: SeRemoteShutdownPrivilege 1784 wmic.exe Token: SeUndockPrivilege 1784 wmic.exe Token: SeManageVolumePrivilege 1784 wmic.exe Token: 33 1784 wmic.exe Token: 34 1784 wmic.exe Token: 35 1784 wmic.exe Token: 36 1784 wmic.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2792 wrote to memory of 1784 2792 Umbral.exe 78 PID 2792 wrote to memory of 1784 2792 Umbral.exe 78