Analysis
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max time kernel
119s -
max time network
125s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
06-09-2024 02:54
Behavioral task
behavioral1
Sample
3377fd58aba5f3d4073d3806c8334190N.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
3377fd58aba5f3d4073d3806c8334190N.exe
Resource
win10v2004-20240802-en
General
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Target
3377fd58aba5f3d4073d3806c8334190N.exe
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Size
37KB
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MD5
3377fd58aba5f3d4073d3806c8334190
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SHA1
12c12e3d5360fa78873e67981057358f25af6b0f
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SHA256
63b0d11888edf5492500205233ef6c100a106074817faea08adaa5004c7e2512
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SHA512
1e394a04133ea7124cba2d5ccf8cb187a87c261fc8807d060cf8693d860b8405cf8e98bddd6275d207abf29f1bcb8ba03a6a41f2e521d5d8379de2933b93c3c7
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SSDEEP
384:I+eKMizdRjnBhFbJ8ycPZrfr7wiApXrAF+rMRTyN/0L+EcoinblneHQM3epzXq/b:RegRlLJfcPZrfFAprM+rMRa8Nuept
Malware Config
Signatures
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2540 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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation 3377fd58aba5f3d4073d3806c8334190N.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\20643b012bbbb441813df9b6836bec16.exe piska.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\20643b012bbbb441813df9b6836bec16.exe piska.exe -
Executes dropped EXE 1 IoCs
pid Process 1280 piska.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\20643b012bbbb441813df9b6836bec16 = "\"C:\\Users\\Admin\\AppData\\Roaming\\piska.exe\" .." piska.exe Set value (str) \REGISTRY\USER\S-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\20643b012bbbb441813df9b6836bec16 = "\"C:\\Users\\Admin\\AppData\\Roaming\\piska.exe\" .." piska.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs
flow ioc 23 0.tcp.eu.ngrok.io 46 0.tcp.eu.ngrok.io 84 0.tcp.eu.ngrok.io 87 0.tcp.eu.ngrok.io -
Drops autorun.inf file 1 TTPs 5 IoCs
Malware can abuse Windows Autorun to spread further via attached volumes.
description ioc Process File created C:\autorun.inf piska.exe File opened for modification C:\autorun.inf piska.exe File created D:\autorun.inf piska.exe File created F:\autorun.inf piska.exe File opened for modification F:\autorun.inf piska.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.
description 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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3377fd58aba5f3d4073d3806c8334190N.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language piska.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
pid Process 888 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 28 IoCs
description pid Process Token: SeDebugPrivilege 888 taskkill.exe Token: SeDebugPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe Token: 33 1280 piska.exe Token: SeIncBasePriorityPrivilege 1280 piska.exe -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 740 wrote to memory of 1280 740 3377fd58aba5f3d4073d3806c8334190N.exe 95 PID 740 wrote to memory of 1280 740 3377fd58aba5f3d4073d3806c8334190N.exe 95 PID 740 wrote to memory of 1280 740 3377fd58aba5f3d4073d3806c8334190N.exe 95 PID 1280 wrote to memory of 2540 1280 piska.exe 98 PID 1280 wrote to memory of 2540 1280 piska.exe 98 PID 1280 wrote to memory of 2540 1280 piska.exe 98 PID 1280 wrote to memory of 888 1280 piska.exe 100 PID 1280 wrote to memory of 888 1280 piska.exe 100 PID 1280 wrote to memory of 888 1280 piska.exe 100
Processes
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C:\Users\Admin\AppData\Local\Temp\3377fd58aba5f3d4073d3806c8334190N.exe"C:\Users\Admin\AppData\Local\Temp\3377fd58aba5f3d4073d3806c8334190N.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:740 -
C:\Users\Admin\AppData\Roaming\piska.exe"C:\Users\Admin\AppData\Roaming\piska.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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1280 -
C:\Windows\SysWOW64\netsh.exenetsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\piska.exe" "piska.exe" ENABLE3⤵
- Modifies Windows Firewall
- Event Triggered Execution: Netsh Helper DLL
- System Location Discovery: System Language Discovery
PID:2540
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C:\Windows\SysWOW64\taskkill.exetaskkill /F /IM taskmgr.exe3⤵
- System Location Discovery: System Language Discovery
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:888
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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
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Downloads
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Filesize
37KB
MD53377fd58aba5f3d4073d3806c8334190
SHA112c12e3d5360fa78873e67981057358f25af6b0f
SHA25663b0d11888edf5492500205233ef6c100a106074817faea08adaa5004c7e2512
SHA5121e394a04133ea7124cba2d5ccf8cb187a87c261fc8807d060cf8693d860b8405cf8e98bddd6275d207abf29f1bcb8ba03a6a41f2e521d5d8379de2933b93c3c7