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Analysis
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max time kernel
150s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
04/03/2024, 14:11
Static task
static1
Behavioral task
behavioral1
Sample
b253f5b8d1f9aad76587136d065831e2.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
b253f5b8d1f9aad76587136d065831e2.exe
Resource
win10v2004-20240226-en
General
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Target
b253f5b8d1f9aad76587136d065831e2.exe
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Size
13.6MB
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MD5
b253f5b8d1f9aad76587136d065831e2
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SHA1
1b52e954d04c96a82e24f74ed38ab1136cdec4f6
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SHA256
789e9198d141f39bf030563420328dab4477ac3d60cc87244c6aac684f0aac5e
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SHA512
1ab9b1c968ab3ff32b9e8e19d1bd7d6cd1d19ae601ea86cf20eab684036c0b7a0464f45e36a46468c4684f84eb61217520ee14be862a72e5c075e4751c12a4c3
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SSDEEP
98304:cvjOF//////////////////////////////////////////////////////////H:m
Malware Config
Extracted
tofsee
43.231.4.7
lazystax.ru
Signatures
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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\rlmbqkh = "0" svchost.exe -
Creates new service(s) 1 TTPs
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 2420 netsh.exe -
Sets service image path in registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\rlmbqkh\ImagePath = "C:\\Windows\\SysWOW64\\rlmbqkh\\kjxznkld.exe" svchost.exe -
Deletes itself 1 IoCs
pid Process 2416 svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 2564 kjxznkld.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2564 set thread context of 2416 2564 kjxznkld.exe 41 -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 2552 sc.exe 2644 sc.exe 2636 sc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 30 IoCs
description pid Process procid_target PID 1964 wrote to memory of 3000 1964 b253f5b8d1f9aad76587136d065831e2.exe 28 PID 1964 wrote to memory of 3000 1964 b253f5b8d1f9aad76587136d065831e2.exe 28 PID 1964 wrote to memory of 3000 1964 b253f5b8d1f9aad76587136d065831e2.exe 28 PID 1964 wrote to memory of 3000 1964 b253f5b8d1f9aad76587136d065831e2.exe 28 PID 1964 wrote to memory of 2936 1964 b253f5b8d1f9aad76587136d065831e2.exe 30 PID 1964 wrote to memory of 2936 1964 b253f5b8d1f9aad76587136d065831e2.exe 30 PID 1964 wrote to memory of 2936 1964 b253f5b8d1f9aad76587136d065831e2.exe 30 PID 1964 wrote to memory of 2936 1964 b253f5b8d1f9aad76587136d065831e2.exe 30 PID 1964 wrote to memory of 2552 1964 b253f5b8d1f9aad76587136d065831e2.exe 32 PID 1964 wrote to memory of 2552 1964 b253f5b8d1f9aad76587136d065831e2.exe 32 PID 1964 wrote to memory of 2552 1964 b253f5b8d1f9aad76587136d065831e2.exe 32 PID 1964 wrote to memory of 2552 1964 b253f5b8d1f9aad76587136d065831e2.exe 32 PID 1964 wrote to memory of 2644 1964 b253f5b8d1f9aad76587136d065831e2.exe 34 PID 1964 wrote to memory of 2644 1964 b253f5b8d1f9aad76587136d065831e2.exe 34 PID 1964 wrote to memory of 2644 1964 b253f5b8d1f9aad76587136d065831e2.exe 34 PID 1964 wrote to memory of 2644 1964 b253f5b8d1f9aad76587136d065831e2.exe 34 PID 1964 wrote to memory of 2636 1964 b253f5b8d1f9aad76587136d065831e2.exe 36 PID 1964 wrote to memory of 2636 1964 b253f5b8d1f9aad76587136d065831e2.exe 36 PID 1964 wrote to memory of 2636 1964 b253f5b8d1f9aad76587136d065831e2.exe 36 PID 1964 wrote to memory of 2636 1964 b253f5b8d1f9aad76587136d065831e2.exe 36 PID 1964 wrote to memory of 2420 1964 b253f5b8d1f9aad76587136d065831e2.exe 39 PID 1964 wrote to memory of 2420 1964 b253f5b8d1f9aad76587136d065831e2.exe 39 PID 1964 wrote to memory of 2420 1964 b253f5b8d1f9aad76587136d065831e2.exe 39 PID 1964 wrote to memory of 2420 1964 b253f5b8d1f9aad76587136d065831e2.exe 39 PID 2564 wrote to memory of 2416 2564 kjxznkld.exe 41 PID 2564 wrote to memory of 2416 2564 kjxznkld.exe 41 PID 2564 wrote to memory of 2416 2564 kjxznkld.exe 41 PID 2564 wrote to memory of 2416 2564 kjxznkld.exe 41 PID 2564 wrote to memory of 2416 2564 kjxznkld.exe 41 PID 2564 wrote to memory of 2416 2564 kjxznkld.exe 41
Processes
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C:\Users\Admin\AppData\Local\Temp\b253f5b8d1f9aad76587136d065831e2.exe"C:\Users\Admin\AppData\Local\Temp\b253f5b8d1f9aad76587136d065831e2.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1964 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rlmbqkh\2⤵PID:3000
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kjxznkld.exe" C:\Windows\SysWOW64\rlmbqkh\2⤵PID:2936
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create rlmbqkh binPath= "C:\Windows\SysWOW64\rlmbqkh\kjxznkld.exe /d\"C:\Users\Admin\AppData\Local\Temp\b253f5b8d1f9aad76587136d065831e2.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
PID:2552
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description rlmbqkh "wifi internet conection"2⤵
- Launches sc.exe
PID:2644
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start rlmbqkh2⤵
- Launches sc.exe
PID:2636
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C:\Windows\SysWOW64\netsh.exe"C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul2⤵
- Modifies Windows Firewall
PID:2420
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C:\Windows\SysWOW64\rlmbqkh\kjxznkld.exeC:\Windows\SysWOW64\rlmbqkh\kjxznkld.exe /d"C:\Users\Admin\AppData\Local\Temp\b253f5b8d1f9aad76587136d065831e2.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2564 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2416
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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
2Windows Service
2Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
2Windows Service
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
11.8MB
MD56bc9cea76db6ad0504fbf8cf259cf247
SHA19840bb4ddcd9a253a4140181f41ca3d83c4e73af
SHA2561a457a45c5f54eab9800ae26489e76d92ae8235abaa66c9bd0f7bbb6a26fd066
SHA51292a747e42aa47af44f1a2fe75b38587f8b54a73aa47125a66c58d848a1e1f89c3c19d9e2be689ce0753b30f3c011ea6c8625c10e2f3d1452f4f94ca91b944f43