63eee8f8decb3dc7d151b7dc05b72ce34da1d259033a3c9ceb7a7919dffa389b

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run	783c11b4d2ea43e7f1e02b4658945276.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\RQWLM40HC0IV = "C:\\Users\\Admin\\AppData\\Roaming\\WE2VSZQX.exe"	783c11b4d2ea43e7f1e02b4658945276.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	783c11b4d2ea43e7f1e02b4658945276.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\RQWLM40HC0IV = "C:\\Users\\Admin\\AppData\\Roaming\\WE2VSZQX.exe"	783c11b4d2ea43e7f1e02b4658945276.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1152-23-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral1/memory/1152-20-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral1/memory/1152-19-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral1/memory/1152-27-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral1/memory/1152-29-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral1/memory/1152-30-0x0000000000400000-0x0000000000420000-memory.dmp	upx
behavioral1/memory/1152-33-0x0000000000400000-0x0000000000420000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\RQWLM40HC0IV = "C:\\Users\\Admin\\AppData\\Roaming\\WE2VSZQX.exe"	783c11b4d2ea43e7f1e02b4658945276.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\RQWLM40HC0IV = "C:\\Users\\Admin\\AppData\\Roaming\\WE2VSZQX.exe"	783c11b4d2ea43e7f1e02b4658945276.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	783c11b4d2ea43e7f1e02b4658945276.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 944 set thread context of 956	944	783c11b4d2ea43e7f1e02b4658945276.exe	28
PID 956 set thread context of 1152	956	783c11b4d2ea43e7f1e02b4658945276.exe	29

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1152	783c11b4d2ea43e7f1e02b4658945276.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
944	783c11b4d2ea43e7f1e02b4658945276.exe
956	783c11b4d2ea43e7f1e02b4658945276.exe
1152	783c11b4d2ea43e7f1e02b4658945276.exe
1152	783c11b4d2ea43e7f1e02b4658945276.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 944 wrote to memory of 956	944	783c11b4d2ea43e7f1e02b4658945276.exe	28
PID 944 wrote to memory of 956	944	783c11b4d2ea43e7f1e02b4658945276.exe	28
PID 944 wrote to memory of 956	944	783c11b4d2ea43e7f1e02b4658945276.exe	28
PID 944 wrote to memory of 956	944	783c11b4d2ea43e7f1e02b4658945276.exe	28
PID 944 wrote to memory of 956	944	783c11b4d2ea43e7f1e02b4658945276.exe	28
PID 944 wrote to memory of 956	944	783c11b4d2ea43e7f1e02b4658945276.exe	28
PID 944 wrote to memory of 956	944	783c11b4d2ea43e7f1e02b4658945276.exe	28
PID 944 wrote to memory of 956	944	783c11b4d2ea43e7f1e02b4658945276.exe	28
PID 944 wrote to memory of 956	944	783c11b4d2ea43e7f1e02b4658945276.exe	28
PID 956 wrote to memory of 1152	956	783c11b4d2ea43e7f1e02b4658945276.exe	29
PID 956 wrote to memory of 1152	956	783c11b4d2ea43e7f1e02b4658945276.exe	29
PID 956 wrote to memory of 1152	956	783c11b4d2ea43e7f1e02b4658945276.exe	29
PID 956 wrote to memory of 1152	956	783c11b4d2ea43e7f1e02b4658945276.exe	29
PID 956 wrote to memory of 1152	956	783c11b4d2ea43e7f1e02b4658945276.exe	29
PID 956 wrote to memory of 1152	956	783c11b4d2ea43e7f1e02b4658945276.exe	29
PID 956 wrote to memory of 1152	956	783c11b4d2ea43e7f1e02b4658945276.exe	29
PID 956 wrote to memory of 1152	956	783c11b4d2ea43e7f1e02b4658945276.exe	29

C:\Users\Admin\AppData\Local\Temp\783c11b4d2ea43e7f1e02b4658945276.exe
"C:\Users\Admin\AppData\Local\Temp\783c11b4d2ea43e7f1e02b4658945276.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:944
- C:\Users\Admin\AppData\Local\Temp\783c11b4d2ea43e7f1e02b4658945276.exe
  "C:\Users\Admin\AppData\Local\Temp\783c11b4d2ea43e7f1e02b4658945276.exe"
  2⤵
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:956
- - C:\Users\Admin\AppData\Local\Temp\783c11b4d2ea43e7f1e02b4658945276.exe
    "C:\Users\Admin\AppData\Local\Temp\783c11b4d2ea43e7f1e02b4658945276.exe"
    3⤵
    - Adds policy Run key to start application
    - Adds Run key to start application
    - Suspicious behavior: RenamesItself
    - Suspicious use of SetWindowsHookEx
    PID:1152

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit