Analysis
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max time kernel
144s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
08-12-2024 11:40
Static task
static1
Behavioral task
behavioral1
Sample
41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe
Resource
win7-20240903-en
General
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Target
41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe
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Size
1.3MB
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MD5
3d8a630c180e93afabc980eccc108606
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SHA1
eef6bac852712611ae9897bc1d6aaca0ca40426b
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SHA256
41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4
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SHA512
508ce53f7d808ca85105021133553b2b9b191cac8b3f48cda62c7d60169a632626d37e0dba8520d44e9e1ba6c771dec46b6f61be1d8b694739b51d9aa6fe5354
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SSDEEP
24576:dOyHutimZ9VSly2hVvHW6qMnSbTBBhBMNJ:QHPkVOBTK
Malware Config
Signatures
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resource yara_rule behavioral1/memory/3004-0-0x0000000010000000-0x000000001019F000-memory.dmp purplefox_rootkit -
Gh0st RAT payload 1 IoCs
resource yara_rule behavioral1/memory/3004-0-0x0000000010000000-0x000000001019F000-memory.dmp family_gh0strat -
Gh0strat family
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Purplefox family
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Drops file in Drivers directory 1 IoCs
description ioc Process File created C:\Windows\system32\drivers\QAssist.sys sainbox.exe -
Sets service image path in registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\QAssist\ImagePath = "system32\\DRIVERS\\QAssist.sys" sainbox.exe -
Deletes itself 1 IoCs
pid Process 2676 cmd.exe -
Executes dropped EXE 2 IoCs
pid Process 2504 sainbox.exe 1900 sainbox.exe -
Loads dropped DLL 1 IoCs
pid Process 2504 sainbox.exe -
Drops file in System32 directory 2 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\sainbox.exe 41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe File created C:\Windows\SysWOW64\sainbox.exe 41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.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 cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language PING.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sainbox.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language sainbox.exe -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 2676 cmd.exe 2808 PING.EXE -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 2808 PING.EXE -
Suspicious behavior: LoadsDriver 1 IoCs
pid Process 1900 sainbox.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeIncBasePriorityPrivilege 3004 41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe Token: SeLoadDriverPrivilege 1900 sainbox.exe Token: 33 1900 sainbox.exe Token: SeIncBasePriorityPrivilege 1900 sainbox.exe Token: 33 1900 sainbox.exe Token: SeIncBasePriorityPrivilege 1900 sainbox.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3004 wrote to memory of 2676 3004 41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe 31 PID 3004 wrote to memory of 2676 3004 41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe 31 PID 3004 wrote to memory of 2676 3004 41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe 31 PID 3004 wrote to memory of 2676 3004 41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe 31 PID 2504 wrote to memory of 1900 2504 sainbox.exe 32 PID 2504 wrote to memory of 1900 2504 sainbox.exe 32 PID 2504 wrote to memory of 1900 2504 sainbox.exe 32 PID 2504 wrote to memory of 1900 2504 sainbox.exe 32 PID 2676 wrote to memory of 2808 2676 cmd.exe 34 PID 2676 wrote to memory of 2808 2676 cmd.exe 34 PID 2676 wrote to memory of 2808 2676 cmd.exe 34 PID 2676 wrote to memory of 2808 2676 cmd.exe 34
Processes
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C:\Users\Admin\AppData\Local\Temp\41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe"C:\Users\Admin\AppData\Local\Temp\41c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4.exe"1⤵
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3004 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ping -n 2 127.0.0.1 > nul && del C:\Users\Admin\AppData\Local\Temp\41C40A~1.EXE > nul2⤵
- Deletes itself
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:2676 -
C:\Windows\SysWOW64\PING.EXEping -n 2 127.0.0.13⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:2808
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C:\Windows\SysWOW64\sainbox.exeC:\Windows\SysWOW64\sainbox.exe -auto1⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2504 -
C:\Windows\SysWOW64\sainbox.exeC:\Windows\SysWOW64\sainbox.exe -acsi2⤵
- Drops file in Drivers directory
- Sets service image path in registry
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
PID:1900
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Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
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Downloads
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Filesize
1.3MB
MD53d8a630c180e93afabc980eccc108606
SHA1eef6bac852712611ae9897bc1d6aaca0ca40426b
SHA25641c40a3bba776f610cf0aff32c8e78efe797e100f999d755d2feab820fc037e4
SHA512508ce53f7d808ca85105021133553b2b9b191cac8b3f48cda62c7d60169a632626d37e0dba8520d44e9e1ba6c771dec46b6f61be1d8b694739b51d9aa6fe5354