Analysis
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max time kernel
1800s -
max time network
1799s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
27/04/2024, 21:46
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
Client.exe
Resource
win10v2004-20240426-en
windows10-2004-x64
12 signatures
1800 seconds
General
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Target
Client.exe
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Size
159KB
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MD5
6173cb7d0e9d8ede7a5ad7171fd0ea1f
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SHA1
e77594390afca93d09bdaab83c0a54971a2d9657
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SHA256
c6f5ebf11c73827e6899efef78e6ac8d52331ef6cf2a3feea1cad043dbfa82de
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SHA512
6dbf672824062a194b93ce904634a89d14dc7122cba0581ecda5d0d6b6531a63b16f6ca040235864eaa4faf8487c7d621af056d3707c27e0474055af207d9227
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SSDEEP
3072:y/4q4thMdRZ6YIlzZo2e0xxYWV2txhtBhd1BAAw8KHhEO3rJk:iRZ6YsZneUzghtrBAnyO9
Score
10/10
Malware Config
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 3324 netsh.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation Client.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e063f04a75fc0a4f8c92c2104eca54be.exe COM Surrogate.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e063f04a75fc0a4f8c92c2104eca54be.exe COM Surrogate.exe -
Executes dropped EXE 1 IoCs
pid Process 1320 COM Surrogate.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\e063f04a75fc0a4f8c92c2104eca54be = "\"C:\\Windows\\COM Surrogate.exe\" .." COM Surrogate.exe Set value (str) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e063f04a75fc0a4f8c92c2104eca54be = "\"C:\\Windows\\COM Surrogate.exe\" .." COM Surrogate.exe -
Drops file in Windows directory 1 IoCs
description ioc Process File created C:\Windows\COM Surrogate.exe Client.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe 2324 Client.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1320 COM Surrogate.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 2324 Client.exe Token: SeDebugPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe Token: 33 1320 COM Surrogate.exe Token: SeIncBasePriorityPrivilege 1320 COM Surrogate.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 2324 wrote to memory of 1320 2324 Client.exe 86 PID 2324 wrote to memory of 1320 2324 Client.exe 86 PID 2324 wrote to memory of 1320 2324 Client.exe 86 PID 1320 wrote to memory of 3324 1320 COM Surrogate.exe 87 PID 1320 wrote to memory of 3324 1320 COM Surrogate.exe 87 PID 1320 wrote to memory of 3324 1320 COM Surrogate.exe 87
Processes
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C:\Users\Admin\AppData\Local\Temp\Client.exe"C:\Users\Admin\AppData\Local\Temp\Client.exe"1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2324 -
C:\Windows\COM Surrogate.exe"C:\Windows\COM Surrogate.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1320 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Windows\COM Surrogate.exe" "COM Surrogate.exe" ENABLE3⤵
- Modifies Windows Firewall
PID:3324
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Replay Monitor
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Downloads
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Filesize
159KB
MD56173cb7d0e9d8ede7a5ad7171fd0ea1f
SHA1e77594390afca93d09bdaab83c0a54971a2d9657
SHA256c6f5ebf11c73827e6899efef78e6ac8d52331ef6cf2a3feea1cad043dbfa82de
SHA5126dbf672824062a194b93ce904634a89d14dc7122cba0581ecda5d0d6b6531a63b16f6ca040235864eaa4faf8487c7d621af056d3707c27e0474055af207d9227