Analysis
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max time kernel
86s -
max time network
91s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
17-07-2023 23:59
Behavioral task
behavioral1
Sample
rc7.exe
Resource
win7-20230712-en
windows7-x64
4 signatures
150 seconds
General
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Target
rc7.exe
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Size
235KB
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MD5
fa5aa7c2bfbc245ebee8440c1b3defe4
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SHA1
20ecd06fbedbb5bdd5f4e2f52d73009e046cc86a
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SHA256
e9a5a1a833ca3d4c9cb4ffbc3df56b9afca877820407075819ffd44935220728
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SHA512
415f11596e8e4f821be610beb75142597c324a1c600f6993aa21a64280e7333996eebea7ff308eb0aa4da44ab53d6b4bdf53fef2755924c1c4fcf5dfbf742371
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SSDEEP
6144:BloZM+rIkd8g+EtXHkv/iD4y7IRbhS6FuAxDeebrtb8e1mM0Ii:zoZtL+EP8y7IRbhS6FuAxDeebBMx
Malware Config
Signatures
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Detect Umbral payload 1 IoCs
resource yara_rule behavioral2/memory/4792-133-0x00000211F9B10000-0x00000211F9B50000-memory.dmp family_umbral -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 3980 NOTEPAD.EXE -
Suspicious use of AdjustPrivilegeToken 43 IoCs
description pid Process Token: SeDebugPrivilege 4792 rc7.exe Token: SeIncreaseQuotaPrivilege 4688 wmic.exe Token: SeSecurityPrivilege 4688 wmic.exe Token: SeTakeOwnershipPrivilege 4688 wmic.exe Token: SeLoadDriverPrivilege 4688 wmic.exe Token: SeSystemProfilePrivilege 4688 wmic.exe Token: SeSystemtimePrivilege 4688 wmic.exe Token: SeProfSingleProcessPrivilege 4688 wmic.exe Token: SeIncBasePriorityPrivilege 4688 wmic.exe Token: SeCreatePagefilePrivilege 4688 wmic.exe Token: SeBackupPrivilege 4688 wmic.exe Token: SeRestorePrivilege 4688 wmic.exe Token: SeShutdownPrivilege 4688 wmic.exe Token: SeDebugPrivilege 4688 wmic.exe Token: SeSystemEnvironmentPrivilege 4688 wmic.exe Token: SeRemoteShutdownPrivilege 4688 wmic.exe Token: SeUndockPrivilege 4688 wmic.exe Token: SeManageVolumePrivilege 4688 wmic.exe Token: 33 4688 wmic.exe Token: 34 4688 wmic.exe Token: 35 4688 wmic.exe Token: 36 4688 wmic.exe Token: SeIncreaseQuotaPrivilege 4688 wmic.exe Token: SeSecurityPrivilege 4688 wmic.exe Token: SeTakeOwnershipPrivilege 4688 wmic.exe Token: SeLoadDriverPrivilege 4688 wmic.exe Token: SeSystemProfilePrivilege 4688 wmic.exe Token: SeSystemtimePrivilege 4688 wmic.exe Token: SeProfSingleProcessPrivilege 4688 wmic.exe Token: SeIncBasePriorityPrivilege 4688 wmic.exe Token: SeCreatePagefilePrivilege 4688 wmic.exe Token: SeBackupPrivilege 4688 wmic.exe Token: SeRestorePrivilege 4688 wmic.exe Token: SeShutdownPrivilege 4688 wmic.exe Token: SeDebugPrivilege 4688 wmic.exe Token: SeSystemEnvironmentPrivilege 4688 wmic.exe Token: SeRemoteShutdownPrivilege 4688 wmic.exe Token: SeUndockPrivilege 4688 wmic.exe Token: SeManageVolumePrivilege 4688 wmic.exe Token: 33 4688 wmic.exe Token: 34 4688 wmic.exe Token: 35 4688 wmic.exe Token: 36 4688 wmic.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3980 NOTEPAD.EXE -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4792 wrote to memory of 4688 4792 rc7.exe 87 PID 4792 wrote to memory of 4688 4792 rc7.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\rc7.exe"C:\Users\Admin\AppData\Local\Temp\rc7.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4792 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid2⤵
- Suspicious use of AdjustPrivilegeToken
PID:4688
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\h.txt1⤵
- Opens file in notepad (likely ransom note)
- Suspicious use of FindShellTrayWindow
PID:3980