601eabe782aff7a264fb37953d0ff488118936bb1a3e2a23e822d4919783c86c

Analysis

max time kernel
155s
max time network
41s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
29/10/2022, 00:38

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General

Target

a/F.class
Size

10KB
MD5

1cd31f67b6eff531c2d95bb0e174c1e5
SHA1

39df1f73df968ea4d50de3d56b6b2f474187abd2
SHA256

962b91f47d2094c2c6c496acc3cd197022ad997a0066992783603d35a959ec1b
SHA512

704ff6ab965f4a90c23203d319e2f9c0c643c7b810cc2be1a5b1c7c4173c458a8161ea8ce5abcfb106c8bf56bc304ad90ce01059f83742c9b3484f382f773e06
SSDEEP

192:Nkx1TRLrggzdor0pGlnQl/NRAW+ndFqyPhSCH6o:NaTLrgUdor0pGqNCLhJz

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\class_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.class\ = "class_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\class_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\class_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\class_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\class_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.class	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\class_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1740	AcroRd32.exe
1740	AcroRd32.exe
1740	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1720 wrote to memory of 2028	1720	cmd.exe	27
PID 1720 wrote to memory of 2028	1720	cmd.exe	27
PID 1720 wrote to memory of 2028	1720	cmd.exe	27
PID 2028 wrote to memory of 1740	2028	rundll32.exe	28
PID 2028 wrote to memory of 1740	2028	rundll32.exe	28
PID 2028 wrote to memory of 1740	2028	rundll32.exe	28
PID 2028 wrote to memory of 1740	2028	rundll32.exe	28

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\a\F.class
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\a\F.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2028
- - 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\a\F.class"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1740

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/1720-54-0x000007FEFC161000-0x000007FEFC163000-memory.dmp

Filesize
8KB

Download
memory/1740-82-0x00000000762B1000-0x00000000762B3000-memory.dmp

Filesize
8KB

Download