Analysis
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max time kernel
150s -
max time network
149s -
platform
windows11-21h2_x64 -
resource
win11-20241007-en -
resource tags
arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system -
submitted
25-10-2024 08:42
Behavioral task
behavioral1
Sample
Server.exe
Resource
win11-20241007-en
windows11-21h2-x64
13 signatures
150 seconds
General
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Target
Server.exe
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Size
93KB
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MD5
3715d6ae97ccefef54ecc91e874aea8c
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SHA1
4a690c46ffa912deb60359655a021a297fb41383
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SHA256
f04597d7204b14de98b22b9495e5bbc25701b51bc7e8878a8ac0d4fc5a123c23
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SHA512
4eb40bde8bac03010bbcacc75a61d2734a64690dfc0f5c179f4ce4311ecbc545164390307c4243b507c035db1e003cbd09bc5c38126cd078a644cfd99bf6918b
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SSDEEP
768:6Y3wM7yZnDQMMpAZrGSt6udttXy4sahkGJiXxrjEtCdnl2pi1Rz4Rk31sGdpygS7:6M+ZD3rGWNd7dhkhjEwzGi1dDFDygS
Malware Config
Signatures
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Disables Task Manager via registry modification
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Modifies Windows Firewall 2 TTPs 3 IoCs
pid Process 1520 netsh.exe 3508 netsh.exe 3324 netsh.exe -
Drops startup file 6 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Microsoft Corporation.exe server.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6145612c2bacdafee10132b5a5ecf5b1Windows Update.exe server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6145612c2bacdafee10132b5a5ecf5b1Windows Update.exe server.exe File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe server.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Explower.exe server.exe -
Executes dropped EXE 1 IoCs
pid Process 332 server.exe -
Drops autorun.inf file 1 TTPs 4 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File created F:\autorun.inf server.exe File opened for modification F:\autorun.inf server.exe File created C:\autorun.inf server.exe File opened for modification C:\autorun.inf server.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\SysWOW64\Explower.exe server.exe File opened for modification C:\Windows\SysWOW64\Explower.exe server.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 9 IoCs
Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.
description ioc Process Key queried \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe 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 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 Key value enumerated \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe Key opened \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh netsh.exe -
System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language server.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language netsh.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Server.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe 332 server.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 332 server.exe -
Suspicious use of AdjustPrivilegeToken 35 IoCs
description pid Process Token: SeDebugPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe Token: 33 332 server.exe Token: SeIncBasePriorityPrivilege 332 server.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 848 wrote to memory of 332 848 Server.exe 81 PID 848 wrote to memory of 332 848 Server.exe 81 PID 848 wrote to memory of 332 848 Server.exe 81 PID 332 wrote to memory of 3508 332 server.exe 82 PID 332 wrote to memory of 3508 332 server.exe 82 PID 332 wrote to memory of 3508 332 server.exe 82 PID 332 wrote to memory of 3324 332 server.exe 84 PID 332 wrote to memory of 3324 332 server.exe 84 PID 332 wrote to memory of 3324 332 server.exe 84 PID 332 wrote to memory of 1520 332 server.exe 85 PID 332 wrote to memory of 1520 332 server.exe 85 PID 332 wrote to memory of 1520 332 server.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\Server.exe"C:\Users\Admin\AppData\Local\Temp\Server.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:848 -
C:\ProgramData\server.exe"C:\ProgramData\server.exe"2⤵
- Drops startup file
- Executes dropped EXE
- Drops autorun.inf file
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:332 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\ProgramData\server.exe" "server.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:3508
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C:\Windows\SysWOW64\netsh.exenetsh firewall delete allowedprogram "C:\ProgramData\server.exe"3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:3324
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C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\ProgramData\server.exe" "server.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:1520
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:3476
Network
MITRE ATT&CK Enterprise v15
Persistence
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Privilege Escalation
Create or Modify System Process
1Windows Service
1Event Triggered Execution
1Netsh Helper DLL
1Replay Monitor
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Downloads
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Filesize
93KB
MD53715d6ae97ccefef54ecc91e874aea8c
SHA14a690c46ffa912deb60359655a021a297fb41383
SHA256f04597d7204b14de98b22b9495e5bbc25701b51bc7e8878a8ac0d4fc5a123c23
SHA5124eb40bde8bac03010bbcacc75a61d2734a64690dfc0f5c179f4ce4311ecbc545164390307c4243b507c035db1e003cbd09bc5c38126cd078a644cfd99bf6918b
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Filesize
408B
MD5593f806d2255a76afcad5d4a8395781b
SHA13990edff12ef61875bb4206b25a97a9440a8998c
SHA256beb8b3a764b3e94cc547be84090345e833be03d95d680ad4d75734ccd6485757
SHA51297440ebd7f8aac1030fe83c7f32a40a986d0fa6faec2c8b8cfbce093a3f27e7626c0b6e768ce6c753ac4dddc4227057b3a6e1d5a652d1f4a9cf64fa8efbad017
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Filesize
5B
MD5cac4598fdc0f92181616d12833eb6ca1
SHA180a7b7a46a0e8e674b782b9eb569e5430a69c84b
SHA256275918973c23ad700f278c69cc03c9c82ec9f4d9ed0f53111ad22bec197ff440
SHA51201a7556bfcce6d9d8251aadc7f6e6169fdd0477d487ce88729c44bfe8b85b2eee500985d553c0479765ef5b5c6dc3517c0305efb9089814c3f8a9ea6fc51c713