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Analysis
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max time kernel
146s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-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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Creates new service(s) 1 TTPs
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Modifies Windows Firewall 2 TTPs 1 IoCs
pid Process 1176 netsh.exe -
Sets service image path in registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\uvcbvgzm\ImagePath = "C:\\Windows\\SysWOW64\\uvcbvgzm\\miaaxmlz.exe" svchost.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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation b253f5b8d1f9aad76587136d065831e2.exe -
Deletes itself 1 IoCs
pid Process 3916 svchost.exe -
Executes dropped EXE 1 IoCs
pid Process 3308 miaaxmlz.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3308 set thread context of 3916 3308 miaaxmlz.exe 109 -
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.
pid Process 1160 sc.exe 4732 sc.exe 3848 sc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 2 IoCs
pid pid_target Process procid_target 2340 5076 WerFault.exe 88 2784 3308 WerFault.exe 104 -
Suspicious use of WriteProcessMemory 23 IoCs
description pid Process procid_target PID 5076 wrote to memory of 3520 5076 b253f5b8d1f9aad76587136d065831e2.exe 92 PID 5076 wrote to memory of 3520 5076 b253f5b8d1f9aad76587136d065831e2.exe 92 PID 5076 wrote to memory of 3520 5076 b253f5b8d1f9aad76587136d065831e2.exe 92 PID 5076 wrote to memory of 3424 5076 b253f5b8d1f9aad76587136d065831e2.exe 94 PID 5076 wrote to memory of 3424 5076 b253f5b8d1f9aad76587136d065831e2.exe 94 PID 5076 wrote to memory of 3424 5076 b253f5b8d1f9aad76587136d065831e2.exe 94 PID 5076 wrote to memory of 1160 5076 b253f5b8d1f9aad76587136d065831e2.exe 96 PID 5076 wrote to memory of 1160 5076 b253f5b8d1f9aad76587136d065831e2.exe 96 PID 5076 wrote to memory of 1160 5076 b253f5b8d1f9aad76587136d065831e2.exe 96 PID 5076 wrote to memory of 4732 5076 b253f5b8d1f9aad76587136d065831e2.exe 99 PID 5076 wrote to memory of 4732 5076 b253f5b8d1f9aad76587136d065831e2.exe 99 PID 5076 wrote to memory of 4732 5076 b253f5b8d1f9aad76587136d065831e2.exe 99 PID 5076 wrote to memory of 3848 5076 b253f5b8d1f9aad76587136d065831e2.exe 102 PID 5076 wrote to memory of 3848 5076 b253f5b8d1f9aad76587136d065831e2.exe 102 PID 5076 wrote to memory of 3848 5076 b253f5b8d1f9aad76587136d065831e2.exe 102 PID 5076 wrote to memory of 1176 5076 b253f5b8d1f9aad76587136d065831e2.exe 105 PID 5076 wrote to memory of 1176 5076 b253f5b8d1f9aad76587136d065831e2.exe 105 PID 5076 wrote to memory of 1176 5076 b253f5b8d1f9aad76587136d065831e2.exe 105 PID 3308 wrote to memory of 3916 3308 miaaxmlz.exe 109 PID 3308 wrote to memory of 3916 3308 miaaxmlz.exe 109 PID 3308 wrote to memory of 3916 3308 miaaxmlz.exe 109 PID 3308 wrote to memory of 3916 3308 miaaxmlz.exe 109 PID 3308 wrote to memory of 3916 3308 miaaxmlz.exe 109
Processes
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C:\Users\Admin\AppData\Local\Temp\b253f5b8d1f9aad76587136d065831e2.exe"C:\Users\Admin\AppData\Local\Temp\b253f5b8d1f9aad76587136d065831e2.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5076 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uvcbvgzm\2⤵PID:3520
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\miaaxmlz.exe" C:\Windows\SysWOW64\uvcbvgzm\2⤵PID:3424
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" create uvcbvgzm binPath= "C:\Windows\SysWOW64\uvcbvgzm\miaaxmlz.exe /d\"C:\Users\Admin\AppData\Local\Temp\b253f5b8d1f9aad76587136d065831e2.exe\"" type= own start= auto DisplayName= "wifi support"2⤵
- Launches sc.exe
PID:1160
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" description uvcbvgzm "wifi internet conection"2⤵
- Launches sc.exe
PID:4732
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C:\Windows\SysWOW64\sc.exe"C:\Windows\System32\sc.exe" start uvcbvgzm2⤵
- Launches sc.exe
PID:3848
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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:1176
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 12442⤵
- Program crash
PID:2340
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C:\Windows\SysWOW64\uvcbvgzm\miaaxmlz.exeC:\Windows\SysWOW64\uvcbvgzm\miaaxmlz.exe /d"C:\Users\Admin\AppData\Local\Temp\b253f5b8d1f9aad76587136d065831e2.exe"1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3308 -
C:\Windows\SysWOW64\svchost.exesvchost.exe2⤵
- Sets service image path in registry
- Deletes itself
PID:3916
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3308 -s 5162⤵
- Program crash
PID:2784
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 5076 -ip 50761⤵PID:1152
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3308 -ip 33081⤵PID:1500
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
14.1MB
MD5bbbab794e10313a6e8fdd4a7079cf889
SHA107313b2742adb8b372883762c1014a08f57aae12
SHA256b6e5728748a87de415fc315d59f59db3eab5b5027286a342c7528558765495f9
SHA512f9f214c1efd2fc1b9bf38ed034f2dc65f066dc355d587e16cfd71db0f931837a808973a13d87163dafd65c6312efef555bdbd6e478a3727553f4cd14591974f0