61d524d5e2174ccf68635a5735c8e8084e3bbd605d23c5d14b2d93d5eaa49fce | Triage

Analysis

max time kernel
28s
max time network
31s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
26-02-2023 14:50

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General

Target

unrar.dll
Size

174KB
MD5

8cdc0717d3537b71b5447ef9ca930eb1
SHA1

ffc2a3b6a5181229cbda79618a3c928f255b94c0
SHA256

67bb09a734979e5a7e25483ff903172f05e404476f792917a1c72701e860aa93
SHA512

41c2e581fdbf30bc8f71307f3b913255e72021f7f3d6d5170c5cfee72f294b0e90788e51fc201412c5fb1ad4f4d60651e4cbee7e1d9a8d0b1828a505a6697aec
SSDEEP

3072:vhRF1wud2QLHWZas7Ix5vepjXVJGK/ocNmg26jwwDhWifoaW5m9LMDuI:JRF1td2QL2Zask/qsK/ocl2A39x9uuI

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1708 2012 WerFault.exe rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2000 wrote to memory of 2012	2000	rundll32.exe	rundll32.exe
PID 2000 wrote to memory of 2012	2000	rundll32.exe	rundll32.exe
PID 2000 wrote to memory of 2012	2000	rundll32.exe	rundll32.exe
PID 2000 wrote to memory of 2012	2000	rundll32.exe	rundll32.exe
PID 2000 wrote to memory of 2012	2000	rundll32.exe	rundll32.exe
PID 2000 wrote to memory of 2012	2000	rundll32.exe	rundll32.exe
PID 2000 wrote to memory of 2012	2000	rundll32.exe	rundll32.exe
PID 2012 wrote to memory of 1708	2012	rundll32.exe	WerFault.exe
PID 2012 wrote to memory of 1708	2012	rundll32.exe	WerFault.exe
PID 2012 wrote to memory of 1708	2012	rundll32.exe	WerFault.exe
PID 2012 wrote to memory of 1708	2012	rundll32.exe	WerFault.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\unrar.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2000
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\unrar.dll,#1
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2012
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2012 -s 224
    3⤵
    - Program crash
    PID:1708

Network

MITRE ATT&CK Matrix

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