Analysis
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max time kernel
1s -
max time network
10s -
platform
windows11-21h2_x64 -
resource
win11-20240221-en -
resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system -
submitted
16-03-2024 21:35
Behavioral task
behavioral1
Sample
Umbral.exe
Resource
win10v2004-20240226-en
windows10-2004-x64
4 signatures
30 seconds
General
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Target
Umbral.exe
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Size
230KB
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MD5
23bbb1d349bca5e6f35b2abe9ff078a6
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SHA1
99c3a493dacddcdb88a253a03dabe8fb3abae66c
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SHA256
30ad64434af97756c659a8b7f95efb915dcb18417ebbe373892e75bbdc6d3b13
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SHA512
9e1b0890fee33d9ca051c9bb0d6bda7fb9628dc7329cdb2fb78a9088c6440e203380c0ffae7d9e52c4320eb0cc1bc9967d73d680c8a15fb3e724390896d98dda
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SSDEEP
3072:D96kFx9JEA8VTF+529hA1MPgI8jh2UY06F7aQ47N3DhG05p1E2aR+LTIBmxR8e1u:Z6JxTF7hNPgXjUAhdGSpcRqD8e1LwQh
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral2/memory/4656-0-0x000002110E880000-0x000002110E8C0000-memory.dmp family_umbral -
Suspicious use of AdjustPrivilegeToken 44 IoCs
description pid Process Token: SeDebugPrivilege 4656 Umbral.exe Token: SeIncreaseQuotaPrivilege 1276 wmic.exe Token: SeSecurityPrivilege 1276 wmic.exe Token: SeTakeOwnershipPrivilege 1276 wmic.exe Token: SeLoadDriverPrivilege 1276 wmic.exe Token: SeSystemProfilePrivilege 1276 wmic.exe Token: SeSystemtimePrivilege 1276 wmic.exe Token: SeProfSingleProcessPrivilege 1276 wmic.exe Token: SeIncBasePriorityPrivilege 1276 wmic.exe Token: SeCreatePagefilePrivilege 1276 wmic.exe Token: SeBackupPrivilege 1276 wmic.exe Token: SeRestorePrivilege 1276 wmic.exe Token: SeShutdownPrivilege 1276 wmic.exe Token: SeDebugPrivilege 1276 wmic.exe Token: SeSystemEnvironmentPrivilege 1276 wmic.exe Token: SeRemoteShutdownPrivilege 1276 wmic.exe Token: SeUndockPrivilege 1276 wmic.exe Token: SeManageVolumePrivilege 1276 wmic.exe Token: 33 1276 wmic.exe Token: 34 1276 wmic.exe Token: 35 1276 wmic.exe Token: 36 1276 wmic.exe Token: SeIncreaseQuotaPrivilege 1276 wmic.exe Token: SeSecurityPrivilege 1276 wmic.exe Token: SeTakeOwnershipPrivilege 1276 wmic.exe Token: SeLoadDriverPrivilege 1276 wmic.exe Token: SeSystemProfilePrivilege 1276 wmic.exe Token: SeSystemtimePrivilege 1276 wmic.exe Token: SeProfSingleProcessPrivilege 1276 wmic.exe Token: SeIncBasePriorityPrivilege 1276 wmic.exe Token: SeCreatePagefilePrivilege 1276 wmic.exe Token: SeBackupPrivilege 1276 wmic.exe Token: SeRestorePrivilege 1276 wmic.exe Token: SeShutdownPrivilege 1276 wmic.exe Token: SeDebugPrivilege 1276 wmic.exe Token: SeSystemEnvironmentPrivilege 1276 wmic.exe Token: SeRemoteShutdownPrivilege 1276 wmic.exe Token: SeUndockPrivilege 1276 wmic.exe Token: SeManageVolumePrivilege 1276 wmic.exe Token: 33 1276 wmic.exe Token: 34 1276 wmic.exe Token: 35 1276 wmic.exe Token: 36 1276 wmic.exe Token: SeShutdownPrivilege 4656 Umbral.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4656 wrote to memory of 1276 4656 Umbral.exe 81 PID 4656 wrote to memory of 1276 4656 Umbral.exe 81