e9494f781813c9721d83f6b3d087f8f36db9eff5da568564697f0ff45038cf98

Analysis

max time kernel
275s
max time network
421s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
27/11/2022, 14:41

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General

Target

3km2-20120528[1117]/3K20120528(0404)合击引擎/Mir200/SystemModule.dll
Size

1.7MB
MD5

6e00bde454e5c87cd6a4c0abdc698c89
SHA1

9f9c5d03f1ed8fc40b7f1560fa3db94c0b8a2b28
SHA256

b66ff82da730bb8021fd28aa9f7aa7d6c002a9ade9f64e14645a51665723c5e2
SHA512

fce79019308bf11449f88d52c746ec4dad624c5f4ec03d8b9a1d4cc95dd1a4997513676160eb03101bb041c30970ba7e93df5dd38d39ceac3b935ae74d0de489
SSDEEP

24576:U9kBIWxwSHJvOqByWQH0qYCSIxRJsxLwWfu7bOaSKN/6ZqlRIV+BEl6SujwK:nBINc2qBLlCSQxGuPOyl2V+UL0wK

Score

9^/10

bootkit evasion persistence trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.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\SystemBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1214520366-621468234-4062160515-1000\Software\Wine	rundll32.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	rundll32.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

T1067

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	rundll32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1984	shutdown.exe
Token: SeRemoteShutdownPrivilege	1984	shutdown.exe
Token: 33	1652	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1652	AUDIODG.EXE
Token: 33	1652	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1652	AUDIODG.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1472 wrote to memory of 1104	1472	rundll32.exe	27
PID 1472 wrote to memory of 1104	1472	rundll32.exe	27
PID 1472 wrote to memory of 1104	1472	rundll32.exe	27
PID 1472 wrote to memory of 1104	1472	rundll32.exe	27
PID 1472 wrote to memory of 1104	1472	rundll32.exe	27
PID 1472 wrote to memory of 1104	1472	rundll32.exe	27
PID 1472 wrote to memory of 1104	1472	rundll32.exe	27
PID 1104 wrote to memory of 1984	1104	rundll32.exe	28
PID 1104 wrote to memory of 1984	1104	rundll32.exe	28
PID 1104 wrote to memory of 1984	1104	rundll32.exe	28
PID 1104 wrote to memory of 1984	1104	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3km2-20120528[1117]\3K20120528(0404)合击引擎\Mir200\SystemModule.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1472
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\3km2-20120528[1117]\3K20120528(0404)合击引擎\Mir200\SystemModule.dll,#1
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Checks whether UAC is enabled
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of WriteProcessMemory
  PID:1104
- - C:\Windows\SysWOW64\shutdown.exe
    "C:\Windows\System32\shutdown.exe" -s -t 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1984

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:920

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x55c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1652

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:1792

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/920-58-0x000007FEFB8A1000-0x000007FEFB8A3000-memory.dmp

Filesize
8KB

Download
memory/1104-55-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download
memory/1104-56-0x0000000000930000-0x0000000000D35000-memory.dmp

Filesize
4.0MB

Download

Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads