601eabe782aff7a264fb37953d0ff488118936bb1a3e2a23e822d4919783c86c

Analysis

max time kernel
156s
max time network
39s
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/C.class
Size

1KB
MD5

d764074b6f330f1eefcdd5abb9166a68
SHA1

78241182a42c1b4ddc0296c43da83683f3a8707e
SHA256

fcfefe43b8197093bcd22ec454efed531c863dc3588ad39d0fa420b482ce42e9
SHA512

0fc7677048791d8e0bf38ebb38287f7c42b14a79c8fb9a28c96d5bbc81ea1ff98a342bdcc8075b25a34c2c9229bb195ff7c4f92d0e80059cc79e92ded591c9b0

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
Key created	\REGISTRY\USER\S-1-5-21-999675638-2867687379-27515722-1000_CLASSES\.class	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
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
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\class_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1772	AcroRd32.exe
1772	AcroRd32.exe
1772	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 608	1960	cmd.exe	28
PID 1960 wrote to memory of 608	1960	cmd.exe	28
PID 1960 wrote to memory of 608	1960	cmd.exe	28
PID 608 wrote to memory of 1772	608	rundll32.exe	29
PID 608 wrote to memory of 1772	608	rundll32.exe	29
PID 608 wrote to memory of 1772	608	rundll32.exe	29
PID 608 wrote to memory of 1772	608	rundll32.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\a\C.class
1⤵
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\a\C.class
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:608
- - 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\C.class"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1772

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/1772-82-0x0000000075AD1000-0x0000000075AD3000-memory.dmp

Filesize
8KB

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memory/1960-54-0x000007FEFC001000-0x000007FEFC003000-memory.dmp

Filesize
8KB

Download