Analysis
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max time kernel
15s -
max time network
24s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
27-08-2023 15:46
General
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Target
Umbral Builder.exe
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Size
212KB
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MD5
f76077bc0ab1e9ba4abd4ee74e481631
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SHA1
56368f4d35276298a8f11f3e6d30044a2bcb1cf7
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SHA256
e147fd2cd1d20698a2245593f3edfe9fd2ddd8c136cc01ba915ec0469bc6864c
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SHA512
c7e314dcf72c78d15c449f469b9c7f8df2a2af676be6f97095eaa160a1e9392befd472bc528f9f0834979a86e8ea8b676cd066332ca61d25a9c170948417e17b
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SSDEEP
3072:PmpcjvqySgPAm+D9Cocawot18PeX4UD7oNHki0sMXSl8eN7s2fVXzcGTSY1:KcWoPA1Rrt181I7oNHk7y8eNYupS
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral1/memory/3288-0-0x000001DA9C3A0000-0x000001DA9C3DC000-memory.dmp family_umbral -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 3288 Umbral Builder.exe Token: SeIncreaseQuotaPrivilege 4744 wmic.exe Token: SeSecurityPrivilege 4744 wmic.exe Token: SeTakeOwnershipPrivilege 4744 wmic.exe Token: SeLoadDriverPrivilege 4744 wmic.exe Token: SeSystemProfilePrivilege 4744 wmic.exe Token: SeSystemtimePrivilege 4744 wmic.exe Token: SeProfSingleProcessPrivilege 4744 wmic.exe Token: SeIncBasePriorityPrivilege 4744 wmic.exe Token: SeCreatePagefilePrivilege 4744 wmic.exe Token: SeBackupPrivilege 4744 wmic.exe Token: SeRestorePrivilege 4744 wmic.exe Token: SeShutdownPrivilege 4744 wmic.exe Token: SeDebugPrivilege 4744 wmic.exe Token: SeSystemEnvironmentPrivilege 4744 wmic.exe Token: SeRemoteShutdownPrivilege 4744 wmic.exe Token: SeUndockPrivilege 4744 wmic.exe Token: SeManageVolumePrivilege 4744 wmic.exe Token: 33 4744 wmic.exe Token: 34 4744 wmic.exe Token: 35 4744 wmic.exe Token: 36 4744 wmic.exe Token: SeIncreaseQuotaPrivilege 4744 wmic.exe Token: SeSecurityPrivilege 4744 wmic.exe Token: SeTakeOwnershipPrivilege 4744 wmic.exe Token: SeLoadDriverPrivilege 4744 wmic.exe Token: SeSystemProfilePrivilege 4744 wmic.exe Token: SeSystemtimePrivilege 4744 wmic.exe Token: SeProfSingleProcessPrivilege 4744 wmic.exe Token: SeIncBasePriorityPrivilege 4744 wmic.exe Token: SeCreatePagefilePrivilege 4744 wmic.exe Token: SeBackupPrivilege 4744 wmic.exe Token: SeRestorePrivilege 4744 wmic.exe Token: SeShutdownPrivilege 4744 wmic.exe Token: SeDebugPrivilege 4744 wmic.exe Token: SeSystemEnvironmentPrivilege 4744 wmic.exe Token: SeRemoteShutdownPrivilege 4744 wmic.exe Token: SeUndockPrivilege 4744 wmic.exe Token: SeManageVolumePrivilege 4744 wmic.exe Token: 33 4744 wmic.exe Token: 34 4744 wmic.exe Token: 35 4744 wmic.exe Token: 36 4744 wmic.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3288 wrote to memory of 4744 3288 Umbral Builder.exe 83 PID 3288 wrote to memory of 4744 3288 Umbral Builder.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\Umbral Builder.exe"C:\Users\Admin\AppData\Local\Temp\Umbral Builder.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3288 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4744
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