Analysis
- max time kernel
141s - max time network
122s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system - submitted
03/04/2024, 04:37
Static task
static1
Behavioral task
behavioral1
Sample
RFQ-SulselBarruII2-COALCOMMLDOC.exe
Resource
win7-20240221-en
17 signatures
150 seconds
Behavioral task
behavioral2
Sample
RFQ-SulselBarruII2-COALCOMMLDOC.exe
Resource
win10v2004-20240226-en
17 signatures
150 seconds
Behavioral task
behavioral3
Sample
Graustark/resultalet/Unmeringued.ps1
Resource
win7-20240221-en
9 signatures
150 seconds
Behavioral task
behavioral4
Sample
Graustark/resultalet/Unmeringued.ps1
Resource
win10v2004-20240226-en
12 signatures
150 seconds
General
- Target Graustark/resultalet/Unmeringued.ps1
- Size 60KB
- Sample240403-e8z1tagf43
- SHA256 8559f472b29a2d1de1124b1b2aa6d62558b1207a3910048d77b9bb07501e3733
- MD5 8418ca27cc3391358049989e80076a60
- SHA1 0ca1bae9dfabae917324af7337d1ed8c2b6001aa
- SHA512 b6ee3a45200b5f218520c38fbde6b6a30e4f2e847ea890ace3b37a38b14f2c26ee12f21c350052336c67ac725233f1e5b65b1d0b5a4343ef0fca50214b96c01f
- SSDEEP 1536:FNKL+KTusOLdVQxd5B+n51ZPsXb7VZcrq/qhgPqpba5Znn:FNsl9Ud2u1ZP87ViQSpyBn
- MD5 SHA1 SHA512 SSDEEP
Score
8/10
Malware Config
Signatures
- Modifies Installed Components in the registry 2 TTPs 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000\Software\Microsoft\Active Setup\Installed Components explorer.exe - Modifies registry class 5 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_Classes\Local Settings explorer.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell explorer.exe Key created \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots explorer.exe Set value (data) \REGISTRY\USER\S-1-5-21-406356229-2805545415-1236085040-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff explorer.exe - Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 2532 powershell.exe 2532 powershell.exe 2532 powershell.exe 2532 powershell.exe 2532 powershell.exe 2532 powershell.exe 2532 powershell.exe 2532 powershell.exe - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2692 explorer.exe - Suspicious use of AdjustPrivilegeToken 13 IoCs
description pid Process Token: SeDebugPrivilege 2532 powershell.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe Token: SeShutdownPrivilege 2692 explorer.exe - Suspicious use of FindShellTrayWindow 30 IoCs
pid Process 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe - Suspicious use of SendNotifyMessage 19 IoCs
pid Process 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe 2692 explorer.exe - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2532 wrote to memory of 2700 2532 powershell.exe 28 PID 2532 wrote to memory of 2700 2532 powershell.exe 28 PID 2532 wrote to memory of 2700 2532 powershell.exe 28 PID 2532 wrote to memory of 1548 2532 powershell.exe 32 PID 2532 wrote to memory of 1548 2532 powershell.exe 32 PID 2532 wrote to memory of 1548 2532 powershell.exe 32 - Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\Graustark\resultalet\Unmeringued.ps11⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2532 -
C:\Windows\system32\cmd.exe"C:\Windows\system32\cmd.exe" /c "set /A 1^^0"2⤵PID:2700
-
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C:\Windows\system32\wermgr.exe"C:\Windows\system32\wermgr.exe" "-outproc" "2532" "1140"2⤵PID:1548
-
-
C:\Windows\explorer.exeexplorer.exe1⤵
- Modifies Installed Components in the registry
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:2692
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\OutofProcReport259432703.txt
- Size 1KB
- SHA256 0853fce785493b3dbb66635ca823e138b968f60a2aa082b8dd88d99385b4fe62
- MD5 ed6ed7effb20f39b94c36c17e5ab50d6
- SHA1 5fe2700a88100240764700e67c2cfa409d849d49
- SHA512 58d11b4de72c28b61b9f000233bc0f897635cb74490a7fa73e3a3998b455a0d85af4a05ef2fdcef8983a333528a88d8f58bf24b4c081d9d0635d147dd1244e18
- MD5 SHA1 SHA512