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Analysis
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max time kernel
150s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
17/01/2024, 03:04
Behavioral task
behavioral1
Sample
epolizer.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
epolizer.exe
Resource
win10v2004-20231215-en
General
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Target
epolizer.exe
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Size
37KB
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MD5
5eaeb36796615de2cd46d48149c60123
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SHA1
c918fc01d7d2f90353d261891d9316f796d3c735
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SHA256
a33a3bd84a6be254fdf4cfc0ad6cb9264a939f04ce98eb376944f13ec4ae74d3
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SHA512
60323b5c9852ade1ad1a9cfc2c24430702bcd6ce907c4b982ecc9aa59509baa677729baeb432b155b762b5aa1f18a3160c1d786bfe629eb4f69a0b6d0914b142
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SSDEEP
384:hoNqiUx54NLHdayszfhen9XsWiXArAF+rMRTyN/0L+EcoinblneHQM3epzXtNrnG:GrZdJszfhex9iwrM+rMRa8Nurst
Malware Config
Signatures
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Modifies Windows Firewall 1 TTPs 1 IoCs
pid Process 1708 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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation epolizer.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e0d9528ae802acc08bc47fdf4f0fa2b2.exe server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e0d9528ae802acc08bc47fdf4f0fa2b2.exe server.exe -
Executes dropped EXE 1 IoCs
pid Process 4772 server.exe -
Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e0d9528ae802acc08bc47fdf4f0fa2b2 = "\"C:\\Users\\Admin\\AppData\\Roaming\\server.exe\" .." server.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\e0d9528ae802acc08bc47fdf4f0fa2b2 = "\"C:\\Users\\Admin\\AppData\\Roaming\\server.exe\" .." server.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 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe 4772 server.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 4772 server.exe -
Suspicious use of AdjustPrivilegeToken 35 IoCs
description pid Process Token: SeDebugPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe Token: 33 4772 server.exe Token: SeIncBasePriorityPrivilege 4772 server.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 948 wrote to memory of 4772 948 epolizer.exe 94 PID 948 wrote to memory of 4772 948 epolizer.exe 94 PID 948 wrote to memory of 4772 948 epolizer.exe 94 PID 4772 wrote to memory of 1708 4772 server.exe 97 PID 4772 wrote to memory of 1708 4772 server.exe 97 PID 4772 wrote to memory of 1708 4772 server.exe 97
Processes
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C:\Users\Admin\AppData\Local\Temp\epolizer.exe"C:\Users\Admin\AppData\Local\Temp\epolizer.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:948 -
C:\Users\Admin\AppData\Roaming\server.exe"C:\Users\Admin\AppData\Roaming\server.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4772 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\server.exe" "server.exe" ENABLE3⤵
- Modifies Windows Firewall
PID:1708
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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
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
37KB
MD55eaeb36796615de2cd46d48149c60123
SHA1c918fc01d7d2f90353d261891d9316f796d3c735
SHA256a33a3bd84a6be254fdf4cfc0ad6cb9264a939f04ce98eb376944f13ec4ae74d3
SHA51260323b5c9852ade1ad1a9cfc2c24430702bcd6ce907c4b982ecc9aa59509baa677729baeb432b155b762b5aa1f18a3160c1d786bfe629eb4f69a0b6d0914b142