437c8032e578d678d10379c25af38953c41821103fb2d7d25f6a229fdd2bec10

Analysis

max time kernel
150s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
13-02-2023 22:51

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General

Target

Borrador/Language/ChineseSimp.lng
Size

4KB
MD5

b57e51a5bf610b47005bb03a9357f3ad
SHA1

77f217553c5b33910f4cdc4ae946f7c36c9add38
SHA256

fa24efbe6df04ac3af19e7e444caebb0ec3c71997aa5c648f91ce7c87dda4eb7
SHA512

f9bf1bc24157e78da2b94fb46321bdca06639d74a66470eac93fd62c0e03706403052cb012e458a60784faf4f8032070e69a62e7b5a65275ffb9698d1afe6ea7
SSDEEP

96:rRx+2w3E+nMOav9DZ7Akaviuk/Abro+Jp8T2y+5XBLm6Ojhlp7k1UrXDjHyBep6R:dxI3EVOav9D54TUEel6O1l15H/xfu

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\lng_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\lng_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.lng	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.lng\ = "lng_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\lng_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\lng_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\lng_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\lng_auto_file\shell\Read	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
920	AcroRd32.exe
920	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 820	1652	cmd.exe	28
PID 1652 wrote to memory of 820	1652	cmd.exe	28
PID 1652 wrote to memory of 820	1652	cmd.exe	28
PID 820 wrote to memory of 920	820	rundll32.exe	29
PID 820 wrote to memory of 920	820	rundll32.exe	29
PID 820 wrote to memory of 920	820	rundll32.exe	29
PID 820 wrote to memory of 920	820	rundll32.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Borrador\Language\ChineseSimp.lng
1⤵
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Borrador\Language\ChineseSimp.lng
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:820
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\Borrador\Language\ChineseSimp.lng"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/920-82-0x0000000074C91000-0x0000000074C93000-memory.dmp

Filesize
8KB

Download
memory/1652-54-0x000007FEFB761000-0x000007FEFB763000-memory.dmp

Filesize
8KB

Download