Analysis
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max time kernel
300s -
max time network
306s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
31-10-2024 01:23
Behavioral task
behavioral1
Sample
Server.exe
Resource
win11-20241007-en
Behavioral task
behavioral2
Sample
Server.exe
Resource
win7-20240903-en
Behavioral task
behavioral3
Sample
Server.exe
Resource
win10v2004-20241007-en
Behavioral task
behavioral4
Sample
Server.exe
Resource
win10ltsc2021-20241023-en
Behavioral task
behavioral5
Sample
Server.exe
Resource
win11-20241007-en
General
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Target
Server.exe
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Size
37KB
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MD5
2ef7aed002ffeb3bb11459e44c8985b4
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SHA1
3e4962d44fe8f156883af03bf3deeac2843c73f6
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SHA256
3f8718b194105edc9f367fa1a4155c48fa20526c08acce53ae8456a42355d45b
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SHA512
bd100c451a343966dd68550b4aee49271a2452dee399570b7397e7deb17694839bcfe5812d5aa11498337dc1ce4e8fb43d89a95417d424a04f913c30207d45d0
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SSDEEP
384:tqETgiG1CPZfursvO6yszi7oPJoTnuTarAF+rMRTyN/0L+EcoinblneHQM3epzX0:sE/5Wpszi7o2TuWrM+rMRa8Nux4t
Malware Config
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
Processes:
netsh.exepid process 1924 netsh.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Server.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation Server.exe -
Drops startup file 2 IoCs
Processes:
Steam.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\19f90553c0dfe2ce6a1dc4098a6125bc.exe Steam.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\19f90553c0dfe2ce6a1dc4098a6125bc.exe Steam.exe -
Executes dropped EXE 1 IoCs
Processes:
Steam.exepid process 1128 Steam.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
Steam.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\19f90553c0dfe2ce6a1dc4098a6125bc = "\"C:\\Users\\Admin\\AppData\\Roaming\\Steam.exe\" .." Steam.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\19f90553c0dfe2ce6a1dc4098a6125bc = "\"C:\\Users\\Admin\\AppData\\Roaming\\Steam.exe\" .." Steam.exe -
Drops autorun.inf file 1 TTPs 5 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
Processes:
Steam.exedescription ioc process File opened for modification C:\autorun.inf Steam.exe File created D:\autorun.inf Steam.exe File created F:\autorun.inf Steam.exe File opened for modification F:\autorun.inf Steam.exe File created C:\autorun.inf Steam.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
Processes:
netsh.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe -
System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
Server.exeSteam.exenetsh.exetaskkill.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Server.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Steam.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language taskkill.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 3504 taskkill.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
Processes:
Steam.exepid process 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe 1128 Steam.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Steam.exepid process 1128 Steam.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
Steam.exetaskkill.exedescription pid process Token: SeDebugPrivilege 1128 Steam.exe Token: SeDebugPrivilege 3504 taskkill.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe Token: 33 1128 Steam.exe Token: SeIncBasePriorityPrivilege 1128 Steam.exe -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
Server.exeSteam.exedescription pid process target process PID 2020 wrote to memory of 1128 2020 Server.exe Steam.exe PID 2020 wrote to memory of 1128 2020 Server.exe Steam.exe PID 2020 wrote to memory of 1128 2020 Server.exe Steam.exe PID 1128 wrote to memory of 1924 1128 Steam.exe netsh.exe PID 1128 wrote to memory of 1924 1128 Steam.exe netsh.exe PID 1128 wrote to memory of 1924 1128 Steam.exe netsh.exe PID 1128 wrote to memory of 3504 1128 Steam.exe taskkill.exe PID 1128 wrote to memory of 3504 1128 Steam.exe taskkill.exe PID 1128 wrote to memory of 3504 1128 Steam.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Server.exe"C:\Users\Admin\AppData\Local\Temp\Server.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2020 -
C:\Users\Admin\AppData\Roaming\Steam.exe"C:\Users\Admin\AppData\Roaming\Steam.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Drops autorun.inf file
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1128 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Steam.exe" "Steam.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:1924
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C:\Windows\SysWOW64\taskkill.exetaskkill /F /IM Exsample.exe3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:3504
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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
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Defense Evasion
Impair Defenses
1Disable or Modify System Firewall
1Modify Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
37KB
MD52ef7aed002ffeb3bb11459e44c8985b4
SHA13e4962d44fe8f156883af03bf3deeac2843c73f6
SHA2563f8718b194105edc9f367fa1a4155c48fa20526c08acce53ae8456a42355d45b
SHA512bd100c451a343966dd68550b4aee49271a2452dee399570b7397e7deb17694839bcfe5812d5aa11498337dc1ce4e8fb43d89a95417d424a04f913c30207d45d0