24b3e779ce2e9678a01e4732e992c1b0d2771c8bc246d33714ec7352b25208fe

Analysis

max time kernel
115s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
11/04/2023, 06:04

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

ui_chara_db.prc
Size

33KB
MD5

928f4707d6e655753460bfaceea19a3b
SHA1

a9e7f244cd49b8136a71a3f06bd1fe9dd959cdd8
SHA256

24b3e779ce2e9678a01e4732e992c1b0d2771c8bc246d33714ec7352b25208fe
SHA512

72fb4db47a2cf403a36b92bafdeb25689d17f7dd3e477f539b6014e78de0b41829d5f9552781c0304d2625c852fcb2fe45f700745e96502032ee3c1a31a62b24
SSDEEP

384:SNymIR0pRJ5KKYZbcvIqn/l/ltei5HgosIlR:SARkRqKYZbpqnRlteSHgosIlR

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
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.prc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\prc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\prc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\prc_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\prc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\prc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\.prc\ = "prc_auto_file"	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000_CLASSES\prc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
520	AcroRd32.exe
520	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1204 wrote to memory of 756	1204	cmd.exe	29
PID 1204 wrote to memory of 756	1204	cmd.exe	29
PID 1204 wrote to memory of 756	1204	cmd.exe	29
PID 756 wrote to memory of 520	756	rundll32.exe	30
PID 756 wrote to memory of 520	756	rundll32.exe	30
PID 756 wrote to memory of 520	756	rundll32.exe	30
PID 756 wrote to memory of 520	756	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\ui_chara_db.prc
1⤵
- Suspicious use of WriteProcessMemory
PID:1204
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\ui_chara_db.prc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:756
- - 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\ui_chara_db.prc"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:520

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

Windows 7 deprecation

Loading Replay Monitor...