Analysis
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max time kernel
99s -
max time network
140s -
platform
windows10-ltsc 2021_x64 -
resource
win10ltsc2021-20241023-en -
resource tags
arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system -
submitted
05-11-2024 10:52
Behavioral task
behavioral1
Sample
Njrat .204.exe
Resource
win7-20240903-en
windows7-x64
6 signatures
150 seconds
Behavioral task
behavioral2
Sample
Njrat .204.exe
Resource
win10v2004-20241007-en
windows10-2004-x64
6 signatures
150 seconds
Behavioral task
behavioral3
Sample
Njrat .204.exe
Resource
win10ltsc2021-20241023-en
windows10-ltsc 2021-x64
7 signatures
150 seconds
General
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Target
Njrat .204.exe
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Size
351KB
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MD5
498b9af2dfaba5960cac346ab9d293a0
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SHA1
751e69b28a08b6c86092ca696731a9c677b947f4
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SHA256
f187f157d9a9ec539e8bf1e98a309bf2777a2270b872086937620e8149914001
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SHA512
28eeafc324cd0dd8092215307dfd3e2fa4a95dc162bf923a146712661b7ed70bf986f28ede01c6de2cfbf11ce00331d58ca6fc5e37e0e940538792c595132c3b
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SSDEEP
6144:B4oZoaeVHPtHgTIAaZgCwDx7axHU0unC28ejI8T7CxBt25:6oZ8HPvWCwjXCsIiCxBt
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral3/memory/5048-1-0x0000018BAC6D0000-0x0000018BAC72E000-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 10 ip-api.com -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2124 wmic.exe 2124 wmic.exe 2124 wmic.exe 2124 wmic.exe -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 5048 Njrat .204.exe Token: SeIncreaseQuotaPrivilege 2124 wmic.exe Token: SeSecurityPrivilege 2124 wmic.exe Token: SeTakeOwnershipPrivilege 2124 wmic.exe Token: SeLoadDriverPrivilege 2124 wmic.exe Token: SeSystemProfilePrivilege 2124 wmic.exe Token: SeSystemtimePrivilege 2124 wmic.exe Token: SeProfSingleProcessPrivilege 2124 wmic.exe Token: SeIncBasePriorityPrivilege 2124 wmic.exe Token: SeCreatePagefilePrivilege 2124 wmic.exe Token: SeBackupPrivilege 2124 wmic.exe Token: SeRestorePrivilege 2124 wmic.exe Token: SeShutdownPrivilege 2124 wmic.exe Token: SeDebugPrivilege 2124 wmic.exe Token: SeSystemEnvironmentPrivilege 2124 wmic.exe Token: SeRemoteShutdownPrivilege 2124 wmic.exe Token: SeUndockPrivilege 2124 wmic.exe Token: SeManageVolumePrivilege 2124 wmic.exe Token: 33 2124 wmic.exe Token: 34 2124 wmic.exe Token: 35 2124 wmic.exe Token: 36 2124 wmic.exe Token: SeIncreaseQuotaPrivilege 2124 wmic.exe Token: SeSecurityPrivilege 2124 wmic.exe Token: SeTakeOwnershipPrivilege 2124 wmic.exe Token: SeLoadDriverPrivilege 2124 wmic.exe Token: SeSystemProfilePrivilege 2124 wmic.exe Token: SeSystemtimePrivilege 2124 wmic.exe Token: SeProfSingleProcessPrivilege 2124 wmic.exe Token: SeIncBasePriorityPrivilege 2124 wmic.exe Token: SeCreatePagefilePrivilege 2124 wmic.exe Token: SeBackupPrivilege 2124 wmic.exe Token: SeRestorePrivilege 2124 wmic.exe Token: SeShutdownPrivilege 2124 wmic.exe Token: SeDebugPrivilege 2124 wmic.exe Token: SeSystemEnvironmentPrivilege 2124 wmic.exe Token: SeRemoteShutdownPrivilege 2124 wmic.exe Token: SeUndockPrivilege 2124 wmic.exe Token: SeManageVolumePrivilege 2124 wmic.exe Token: 33 2124 wmic.exe Token: 34 2124 wmic.exe Token: 35 2124 wmic.exe Token: 36 2124 wmic.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 5048 wrote to memory of 2124 5048 Njrat .204.exe 81 PID 5048 wrote to memory of 2124 5048 Njrat .204.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\Njrat .204.exe"C:\Users\Admin\AppData\Local\Temp\Njrat .204.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5048 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2124
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