6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c

General

Target
6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe
Size 7.3MB
Sample200901-bvhb6cy2f2
SHA256 6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c
MD5 7a25209add85407e0613ae9e38954741
SHA1 30902b236b67692f593ac1457e5c09d02c816c05
SHA512 7d6f4da4d2a1e3dea03242dc628cd1931cbe42e07fe3f406cc0e2fdc624ce11d6010be64bb1d492987ac96e0bdf3ef51a723b01e91f84096d165f85914c8bec5
MD5 SHA1 SHA512

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 2 IoCs

pid	Process
1172	360DrvMgr.exe
3796	ComputerZService.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	ComputerZService.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ComputerZService.exe

Loads dropped DLL 10 IoCs

pid	Process
1172	360DrvMgr.exe
1172	360DrvMgr.exe
1172	360DrvMgr.exe
1172	360DrvMgr.exe
1172	360DrvMgr.exe
1172	360DrvMgr.exe
1172	360DrvMgr.exe
1172	360DrvMgr.exe
3796	ComputerZService.exe
3796	ComputerZService.exe

JavaScript code in executable 2 IoCs

resource	yara_rule
behavioral2/files/0x000100000001ad71-9.dat	js
behavioral2/files/0x000100000001ad71-10.dat	js

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

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

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	360DrvMgr.exe
File opened for modification	\??\PhysicalDrive0	ComputerZService.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\System32\DriverStore\FileRepository\machine.inf_amd64_e6c89cc58804e205\machine.PNF	ComputerZService.exe
File created	C:\Windows\System32\DriverStore\FileRepository\hdaudbus.inf_amd64_e22da3cb2d7a1ed6\hdaudbus.PNF	ComputerZService.exe
File created	C:\Windows\System32\DriverStore\FileRepository\mshdc.inf_amd64_74965e869fab271a\mshdc.PNF	ComputerZService.exe
File created	C:\Windows\System32\DriverStore\FileRepository\msmouse.inf_amd64_b0ca8be2ac09ed24\msmouse.PNF	ComputerZService.exe
File created	C:\Windows\System32\DriverStore\FileRepository\input.inf_amd64_e15abe7d25aa2071\input.PNF	ComputerZService.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.exe
File opened for modification	C:\Windows\	ComputerZService.exe

Enumerates system info in registry 2 TTPs 4 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	ComputerZService.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BIOSReleaseDate	ComputerZService.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BIOSVendor	ComputerZService.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\BIOSVersion	ComputerZService.exe

Modifies Internet Explorer settings 1 TTPs 4 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION	360DrvMgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\360DrvMgr.exe = "8000"	360DrvMgr.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_DOCUMENT_COMPATIBLE_MODE	360DrvMgr.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_DOCUMENT_COMPATIBLE_MODE\360DrvMgr.exe = "8000"	360DrvMgr.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = 2e6fe00a4080d601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe

Suspicious behavior: LoadsDriver 2 IoCs

pid	Process
616	Process not Found
616	Process not Found

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeShutdownPrivilege	4036	svchost.exe
Token: SeCreatePagefilePrivilege	4036	svchost.exe
Token: SeIncBasePriorityPrivilege	3796	ComputerZService.exe
Token: SeIncBasePriorityPrivilege	3796	ComputerZService.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1172	360DrvMgr.exe
1172	360DrvMgr.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 696	3056	6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe	73
PID 3056 wrote to memory of 696	3056	6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe	73
PID 3056 wrote to memory of 696	3056	6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe	73
PID 696 wrote to memory of 1172	696	6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe	74
PID 696 wrote to memory of 1172	696	6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe	74
PID 696 wrote to memory of 1172	696	6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe	74
PID 1172 wrote to memory of 3796	1172	360DrvMgr.exe	77
PID 1172 wrote to memory of 3796	1172	360DrvMgr.exe	77
PID 1172 wrote to memory of 3796	1172	360DrvMgr.exe	77

C:\Users\Admin\AppData\Local\Temp\6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe
"C:\Users\Admin\AppData\Local\Temp\6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Users\Admin\AppData\Local\Temp\6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe
  "C:\Users\Admin\AppData\Local\Temp\6b03cfee0a25254f46bb2c3138ece41f2c0255a70141e3f457389e07120a153c.exe" -sfxwaitall:0 "360DrvMgr.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:696
- - C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\360DrvMgr.exe
    "C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\360DrvMgr.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Writes to the Master Boot Record (MBR)
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1172
  - - C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\ComputerZService.exe
      "C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\ComputerZService.exe"
      4⤵
      Executes dropped EXE
      Checks BIOS information in registry
      Loads dropped DLL
      Writes to the Master Boot Record (MBR)
      Drops file in System32 directory
      Drops file in Windows directory
      Enumerates system info in registry
      Suspicious use of AdjustPrivilegeToken
      PID:3796

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:4036

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3796-34-0x0000000002B10000-0x0000000002B11000-memory.dmp

Download

memory/3796-35-0x0000000003CD0000-0x0000000003CD1000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads