Analysis
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max time kernel
526s -
max time network
451s -
platform
windows10-2004_x64 -
resource
win10v2004-20250314-en -
resource tags
arch:x64arch:x86image:win10v2004-20250314-enlocale:en-usos:windows10-2004-x64system -
submitted
25/03/2025, 19:52
Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win10v2004-20250314-en
windows10-2004-x64
6 signatures
900 seconds
Behavioral task
behavioral2
Sample
Umbral.exe
Resource
win10ltsc2021-20250314-en
windows10-ltsc_2021-x64
13 signatures
900 seconds
General
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Target
Umbral.exe
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Size
229KB
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MD5
b4510acd06789ca5c9c98bfac48cd54c
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SHA1
1907b55c643c7a3ab7f0589793c63f36065f8345
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SHA256
24259eb3fb38c08bc329c1bab6a449a3f547734981c1b4c7884ac874ad66cc48
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SHA512
8f49cdb658dc907d3464fe5619bb30972a5bc02b0abeda74e05beeaf69f2f2991e139cd93ca71e7b465ec4f6691583ff19dd7aee68db79cebafd26094a86f2f1
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SSDEEP
6144:lloZM+rIkd8g+EtXHkv/iD438t9Cg/7I9R0STTK8Eb8e1mvi:noZtL+EP838t9Cg/7I9R0STTKht
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral1/memory/4140-1-0x0000026F060E0000-0x0000026F06120000-memory.dmp family_umbral -
Umbral family
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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 12 ip-api.com -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 4140 Umbral.exe Token: SeIncreaseQuotaPrivilege 4784 wmic.exe Token: SeSecurityPrivilege 4784 wmic.exe Token: SeTakeOwnershipPrivilege 4784 wmic.exe Token: SeLoadDriverPrivilege 4784 wmic.exe Token: SeSystemProfilePrivilege 4784 wmic.exe Token: SeSystemtimePrivilege 4784 wmic.exe Token: SeProfSingleProcessPrivilege 4784 wmic.exe Token: SeIncBasePriorityPrivilege 4784 wmic.exe Token: SeCreatePagefilePrivilege 4784 wmic.exe Token: SeBackupPrivilege 4784 wmic.exe Token: SeRestorePrivilege 4784 wmic.exe Token: SeShutdownPrivilege 4784 wmic.exe Token: SeDebugPrivilege 4784 wmic.exe Token: SeSystemEnvironmentPrivilege 4784 wmic.exe Token: SeRemoteShutdownPrivilege 4784 wmic.exe Token: SeUndockPrivilege 4784 wmic.exe Token: SeManageVolumePrivilege 4784 wmic.exe Token: 33 4784 wmic.exe Token: 34 4784 wmic.exe Token: 35 4784 wmic.exe Token: 36 4784 wmic.exe Token: SeIncreaseQuotaPrivilege 4784 wmic.exe Token: SeSecurityPrivilege 4784 wmic.exe Token: SeTakeOwnershipPrivilege 4784 wmic.exe Token: SeLoadDriverPrivilege 4784 wmic.exe Token: SeSystemProfilePrivilege 4784 wmic.exe Token: SeSystemtimePrivilege 4784 wmic.exe Token: SeProfSingleProcessPrivilege 4784 wmic.exe Token: SeIncBasePriorityPrivilege 4784 wmic.exe Token: SeCreatePagefilePrivilege 4784 wmic.exe Token: SeBackupPrivilege 4784 wmic.exe Token: SeRestorePrivilege 4784 wmic.exe Token: SeShutdownPrivilege 4784 wmic.exe Token: SeDebugPrivilege 4784 wmic.exe Token: SeSystemEnvironmentPrivilege 4784 wmic.exe Token: SeRemoteShutdownPrivilege 4784 wmic.exe Token: SeUndockPrivilege 4784 wmic.exe Token: SeManageVolumePrivilege 4784 wmic.exe Token: 33 4784 wmic.exe Token: 34 4784 wmic.exe Token: 35 4784 wmic.exe Token: 36 4784 wmic.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4140 wrote to memory of 4784 4140 Umbral.exe 88 PID 4140 wrote to memory of 4784 4140 Umbral.exe 88