a3cf73d296d5910dd7da2ff4effc66f206bb08bafe8ce3d5f89c7ba67716fb88

Analysis

max time kernel
10s
max time network
15s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
18/08/2024, 13:30

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General

Target

Converter/!)卸载.bat
Size

206B
MD5

da40993071333c55c479798cf7e339da
SHA1

2e32e540e88b9eda6ad1eb0f486ea2c90e9ff21a
SHA256

906cd5276b165f97d5b93ea0d049ef9d28a7c9ea6c36c4aa66d228cc7536cf0c
SHA512

9fbb19e81c38d09364dcecf362b4bf15cb6f0526e9cac7a1c6edf08a7825a3a80631922892b5b95489a89f84eb02f22bf65476d0ef3b3524ab787dc1ba00aa23

Score

6^/10

bootkit discovery persistence

Malware Config

Signatures

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	regsvr32.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	regsvr32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	regsvr32.exe

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
2712	regsvr32.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 2712	2124	cmd.exe	30
PID 2124 wrote to memory of 2712	2124	cmd.exe	30
PID 2124 wrote to memory of 2712	2124	cmd.exe	30
PID 2124 wrote to memory of 2712	2124	cmd.exe	30
PID 2124 wrote to memory of 2712	2124	cmd.exe	30
PID 2712 wrote to memory of 888	2712	regsvr32.exe	31
PID 2712 wrote to memory of 888	2712	regsvr32.exe	31
PID 2712 wrote to memory of 888	2712	regsvr32.exe	31
PID 2712 wrote to memory of 888	2712	regsvr32.exe	31
PID 2712 wrote to memory of 888	2712	regsvr32.exe	31
PID 2712 wrote to memory of 888	2712	regsvr32.exe	31
PID 2712 wrote to memory of 888	2712	regsvr32.exe	31

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Converter\!)卸载.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:2124
- C:\Windows\system32\regsvr32.exe
  regsvr32 /U /s asfsipc.dll mpgfiltr.ax NCTAudioEditor2.dll NCTAudioFile2.dll NCTAudioInformation2.dll NCTAudioPlayer2.dll NCTAudioRecord2.dll NCTAudioTransform2.dll NCTWMAFile2.dll QuickTime.ax wmaudsdk.dll
  2⤵
  - Suspicious behavior: CmdExeWriteProcessMemorySpam
  - Suspicious use of WriteProcessMemory
  PID:2712
- - C:\Windows\SysWOW64\regsvr32.exe
    /U /s asfsipc.dll mpgfiltr.ax NCTAudioEditor2.dll NCTAudioFile2.dll NCTAudioInformation2.dll NCTAudioPlayer2.dll NCTAudioRecord2.dll NCTAudioTransform2.dll NCTWMAFile2.dll QuickTime.ax wmaudsdk.dll
    3⤵
    - Writes to the Master Boot Record (MBR)
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    PID:888

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/888-0-0x0000000010000000-0x00000000100F9000-memory.dmp

Filesize
996KB

Download
memory/888-1-0x0000000000260000-0x0000000000292000-memory.dmp

Filesize
200KB

Download
memory/888-2-0x00000000004F0000-0x00000000004F4000-memory.dmp

Filesize
16KB

Download
memory/888-3-0x0000000010000000-0x000000001020E000-memory.dmp

Filesize
2.1MB

Download
memory/888-4-0x0000000000260000-0x0000000000292000-memory.dmp

Filesize
200KB

Download
memory/888-5-0x0000000000500000-0x0000000000503000-memory.dmp

Filesize
12KB

Download
memory/888-7-0x0000000000260000-0x0000000000292000-memory.dmp

Filesize
200KB

Download
memory/888-6-0x0000000010000000-0x000000001014A000-memory.dmp

Filesize
1.3MB

Download
memory/888-8-0x0000000000500000-0x0000000000504000-memory.dmp

Filesize
16KB

Download
memory/888-10-0x0000000010000000-0x000000001008E000-memory.dmp

Filesize
568KB

Download
memory/888-11-0x0000000000260000-0x0000000000292000-memory.dmp

Filesize
200KB

Download
memory/888-12-0x0000000000500000-0x0000000000503000-memory.dmp

Filesize
12KB

Download
memory/888-9-0x0000000010000000-0x00000000100F9000-memory.dmp

Filesize
996KB

Download
memory/888-15-0x0000000010000000-0x000000001020E000-memory.dmp

Filesize
2.1MB

Download
memory/888-14-0x0000000000260000-0x0000000000292000-memory.dmp

Filesize
200KB

Download
memory/888-13-0x0000000010000000-0x000000001008E000-memory.dmp

Filesize
568KB

Download
memory/888-16-0x0000000000500000-0x0000000000503000-memory.dmp

Filesize
12KB

Download
memory/888-19-0x0000000000260000-0x0000000000292000-memory.dmp

Filesize
200KB

Download
memory/888-18-0x0000000010000000-0x00000000100B1000-memory.dmp

Filesize
708KB

Download
memory/888-17-0x0000000010000000-0x000000001014A000-memory.dmp

Filesize
1.3MB

Download
memory/888-21-0x0000000000500000-0x0000000000503000-memory.dmp

Filesize
12KB

Download
memory/888-20-0x0000000000260000-0x0000000000292000-memory.dmp

Filesize
200KB

Download
memory/888-22-0x0000000010000000-0x0000000010071000-memory.dmp

Filesize
452KB

Download
memory/888-25-0x0000000000260000-0x0000000000292000-memory.dmp

Filesize
200KB

Download
memory/888-24-0x0000000000260000-0x0000000000292000-memory.dmp

Filesize
200KB

Download
memory/888-23-0x0000000010000000-0x000000001008E000-memory.dmp

Filesize
568KB

Download
memory/888-26-0x0000000000500000-0x0000000000502000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads