Analysis
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max time kernel
120s -
max time network
125s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
06-05-2024 12:00
Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win7-20240221-en
windows7-x64
4 signatures
150 seconds
Behavioral task
behavioral2
Sample
Umbral.exe
Resource
win10-20240404-en
windows10-1703-x64
4 signatures
150 seconds
Behavioral task
behavioral3
Sample
Umbral.exe
Resource
win10v2004-20240419-en
windows10-2004-x64
12 signatures
150 seconds
General
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Target
Umbral.exe
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Size
232KB
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MD5
afbe250f9d941daf1fc895e29d0b2821
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SHA1
9aeaa55efa56702a0c2694ff2de3a5c6df7b03ac
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SHA256
628d7cd6016b226c4e5e5252b29dc89e42d30ffebfb489e36857079aad591ce6
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SHA512
177ddc51032af306d32c0826efddfa3be5e68621b440be764fba7ad37fd982fb58d7e902e4eb258fe50bbd236f82457e45e7d12a885c78314b304e72fb0f2c94
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SSDEEP
6144:tloZMDXU9Zx0kt8X0/PSCsMpwpf3tW+x5R0STTKN0b8e1mKISi:voZnf0kkPQwpf3tW+x5R0STTKm2
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral1/memory/1640-1-0x0000000001220000-0x0000000001260000-memory.dmp family_umbral -
Suspicious use of AdjustPrivilegeToken 41 IoCs
description pid Process Token: SeDebugPrivilege 1640 Umbral.exe Token: SeIncreaseQuotaPrivilege 2836 wmic.exe Token: SeSecurityPrivilege 2836 wmic.exe Token: SeTakeOwnershipPrivilege 2836 wmic.exe Token: SeLoadDriverPrivilege 2836 wmic.exe Token: SeSystemProfilePrivilege 2836 wmic.exe Token: SeSystemtimePrivilege 2836 wmic.exe Token: SeProfSingleProcessPrivilege 2836 wmic.exe Token: SeIncBasePriorityPrivilege 2836 wmic.exe Token: SeCreatePagefilePrivilege 2836 wmic.exe Token: SeBackupPrivilege 2836 wmic.exe Token: SeRestorePrivilege 2836 wmic.exe Token: SeShutdownPrivilege 2836 wmic.exe Token: SeDebugPrivilege 2836 wmic.exe Token: SeSystemEnvironmentPrivilege 2836 wmic.exe Token: SeRemoteShutdownPrivilege 2836 wmic.exe Token: SeUndockPrivilege 2836 wmic.exe Token: SeManageVolumePrivilege 2836 wmic.exe Token: 33 2836 wmic.exe Token: 34 2836 wmic.exe Token: 35 2836 wmic.exe Token: SeIncreaseQuotaPrivilege 2836 wmic.exe Token: SeSecurityPrivilege 2836 wmic.exe Token: SeTakeOwnershipPrivilege 2836 wmic.exe Token: SeLoadDriverPrivilege 2836 wmic.exe Token: SeSystemProfilePrivilege 2836 wmic.exe Token: SeSystemtimePrivilege 2836 wmic.exe Token: SeProfSingleProcessPrivilege 2836 wmic.exe Token: SeIncBasePriorityPrivilege 2836 wmic.exe Token: SeCreatePagefilePrivilege 2836 wmic.exe Token: SeBackupPrivilege 2836 wmic.exe Token: SeRestorePrivilege 2836 wmic.exe Token: SeShutdownPrivilege 2836 wmic.exe Token: SeDebugPrivilege 2836 wmic.exe Token: SeSystemEnvironmentPrivilege 2836 wmic.exe Token: SeRemoteShutdownPrivilege 2836 wmic.exe Token: SeUndockPrivilege 2836 wmic.exe Token: SeManageVolumePrivilege 2836 wmic.exe Token: 33 2836 wmic.exe Token: 34 2836 wmic.exe Token: 35 2836 wmic.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1640 wrote to memory of 2836 1640 Umbral.exe 28 PID 1640 wrote to memory of 2836 1640 Umbral.exe 28 PID 1640 wrote to memory of 2836 1640 Umbral.exe 28