matanbuchus | e66c2a09074fa94390262c8b925988e7d9a085edcc97cad79e2ccc9c0e862567 | Triage

Analysis

max time kernel
42s
max time network
45s
platform
windows7_x64
resource
win7-20220414-en
submitted
30-06-2022 22:59

Sharing

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General

Target

auth.dll
Size

2.5MB
MD5

64a2807bc1385ee99c892012ed0a62bf
SHA1

1d21c43b582ca6ad77714c05976fe5827f028bd0
SHA256

e66c2a09074fa94390262c8b925988e7d9a085edcc97cad79e2ccc9c0e862567
SHA512

78352c8643206849726ff7240d9a80faedc76f9586943dd8cdb649ff62af658a849258783fec50157b5f7118a0442ab538a475886d44a2993b2aa7be1b5b46a1

Score

10^/10

matanbuchus loader

Malware Config

Signatures

Matanbuchus
A loader sold as MaaS first seen in February 2021.
loader matanbuchus

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

regsvr32.exe

description	pid	Process	procid_target
PID 1380 wrote to memory of 1664	1380	regsvr32.exe	28
PID 1380 wrote to memory of 1664	1380	regsvr32.exe	28
PID 1380 wrote to memory of 1664	1380	regsvr32.exe	28
PID 1380 wrote to memory of 1664	1380	regsvr32.exe	28
PID 1380 wrote to memory of 1664	1380	regsvr32.exe	28
PID 1380 wrote to memory of 1664	1380	regsvr32.exe	28
PID 1380 wrote to memory of 1664	1380	regsvr32.exe	28

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\auth.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\auth.dll
  2⤵
  PID:1664

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1380-54-0x000007FEFC5C1000-0x000007FEFC5C3000-memory.dmp

Filesize
8KB

Download
memory/1664-55-0x0000000000000000-mapping.dmp

Download
memory/1664-56-0x0000000076C81000-0x0000000076C83000-memory.dmp

Filesize
8KB

Download
memory/1664-57-0x0000000002320000-0x00000000024E7000-memory.dmp

Filesize
1.8MB

Download
memory/1664-58-0x0000000000310000-0x000000000038B000-memory.dmp

Filesize
492KB

Download