437c8032e578d678d10379c25af38953c41821103fb2d7d25f6a229fdd2bec10

Analysis

max time kernel
152s
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/Czech.lng
Size

6KB
MD5

542118a2cc938ac82a922abb171a6df5
SHA1

c3ef3b652555fbc79ba1d794125afe0ee190b8bd
SHA256

ef6b496609073be75cf44941126d4f79920711ec8c4ef2aded9d4b1dbf7c10a8
SHA512

31a9b6dd84e9053d4410678d74b9f2d0dff236eb2c207b6529e5e3a23bae8f8437579508545eb1469c3ef730cf03de8e3dce58e7e0513959334403bc372f1986
SSDEEP

96:rRYvG0PyjNDapRjmU5W0e8ofJpVxTyOp3z5hnZbc9qUpWX/7Oo+0VIK3Luu2Hfuw:dYvG06jNDaPPwFt7DPIhfoAx

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-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.lng\ = "lng_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\lng_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\lng_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\lng_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\lng_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\lng_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.lng	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\lng_auto_file\shell\Read	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1784	AcroRd32.exe
1784	AcroRd32.exe
1784	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1720 wrote to memory of 1112	1720	cmd.exe	27
PID 1720 wrote to memory of 1112	1720	cmd.exe	27
PID 1720 wrote to memory of 1112	1720	cmd.exe	27
PID 1112 wrote to memory of 1784	1112	rundll32.exe	28
PID 1112 wrote to memory of 1784	1112	rundll32.exe	28
PID 1112 wrote to memory of 1784	1112	rundll32.exe	28
PID 1112 wrote to memory of 1784	1112	rundll32.exe	28

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Borrador\Language\Czech.lng
1⤵
- Suspicious use of WriteProcessMemory
PID:1720
- 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\Czech.lng
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1112
- - 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\Czech.lng"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1784

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/1720-54-0x000007FEFB7D1000-0x000007FEFB7D3000-memory.dmp

Filesize
8KB

Download
memory/1784-82-0x0000000074BB1000-0x0000000074BB3000-memory.dmp

Filesize
8KB

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