Analysis
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max time kernel
120s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
10-05-2024 02:48
Behavioral task
behavioral1
Sample
Excess_nls.scr
Resource
win7-20240215-en
windows7-x64
4 signatures
150 seconds
General
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Target
Excess_nls.scr
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Size
247KB
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MD5
7435510d618cc836b23a1bb1791b67b2
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SHA1
1428f359a72436dc70e288963d6fb04387e94bd4
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SHA256
28b8e4f41d9f11d19a188dc903d3a8d37a643d5e3d61b260ddc01a4fd475b91d
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SHA512
5ccc5f49c7752d5367b4e7e4a858ac462e06a7eed7231b8dd96c8c441290e99e71fda3eaffec808656e7a3030c9cf476fc144a102a4ef373d7f184d40fdcfd7b
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SSDEEP
6144:bloZM+rIkd8g+EtXHkv/iD46UsziAfboMxUyzzqG2b8e1mWuFeiQfWsy:5oZtL+EP86UsziAfboMxUyzzq9futQf
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral1/memory/2264-1-0x0000000000D50000-0x0000000000D94000-memory.dmp family_umbral -
Suspicious use of AdjustPrivilegeToken 41 IoCs
description pid Process Token: SeDebugPrivilege 2264 Excess_nls.scr Token: SeIncreaseQuotaPrivilege 2948 wmic.exe Token: SeSecurityPrivilege 2948 wmic.exe Token: SeTakeOwnershipPrivilege 2948 wmic.exe Token: SeLoadDriverPrivilege 2948 wmic.exe Token: SeSystemProfilePrivilege 2948 wmic.exe Token: SeSystemtimePrivilege 2948 wmic.exe Token: SeProfSingleProcessPrivilege 2948 wmic.exe Token: SeIncBasePriorityPrivilege 2948 wmic.exe Token: SeCreatePagefilePrivilege 2948 wmic.exe Token: SeBackupPrivilege 2948 wmic.exe Token: SeRestorePrivilege 2948 wmic.exe Token: SeShutdownPrivilege 2948 wmic.exe Token: SeDebugPrivilege 2948 wmic.exe Token: SeSystemEnvironmentPrivilege 2948 wmic.exe Token: SeRemoteShutdownPrivilege 2948 wmic.exe Token: SeUndockPrivilege 2948 wmic.exe Token: SeManageVolumePrivilege 2948 wmic.exe Token: 33 2948 wmic.exe Token: 34 2948 wmic.exe Token: 35 2948 wmic.exe Token: SeIncreaseQuotaPrivilege 2948 wmic.exe Token: SeSecurityPrivilege 2948 wmic.exe Token: SeTakeOwnershipPrivilege 2948 wmic.exe Token: SeLoadDriverPrivilege 2948 wmic.exe Token: SeSystemProfilePrivilege 2948 wmic.exe Token: SeSystemtimePrivilege 2948 wmic.exe Token: SeProfSingleProcessPrivilege 2948 wmic.exe Token: SeIncBasePriorityPrivilege 2948 wmic.exe Token: SeCreatePagefilePrivilege 2948 wmic.exe Token: SeBackupPrivilege 2948 wmic.exe Token: SeRestorePrivilege 2948 wmic.exe Token: SeShutdownPrivilege 2948 wmic.exe Token: SeDebugPrivilege 2948 wmic.exe Token: SeSystemEnvironmentPrivilege 2948 wmic.exe Token: SeRemoteShutdownPrivilege 2948 wmic.exe Token: SeUndockPrivilege 2948 wmic.exe Token: SeManageVolumePrivilege 2948 wmic.exe Token: 33 2948 wmic.exe Token: 34 2948 wmic.exe Token: 35 2948 wmic.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2264 wrote to memory of 2948 2264 Excess_nls.scr 28 PID 2264 wrote to memory of 2948 2264 Excess_nls.scr 28 PID 2264 wrote to memory of 2948 2264 Excess_nls.scr 28
Processes
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C:\Users\Admin\AppData\Local\Temp\Excess_nls.scr"C:\Users\Admin\AppData\Local\Temp\Excess_nls.scr" /S1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2264 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious use of AdjustPrivilegeToken
PID:2948
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