40a1f7057396a441de12bdf6d7ef4031061d049570bb7a35d902be14b1b0328a

Analysis

max time kernel
149s
max time network
52s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
05/11/2022, 11:57

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General

Target

difflib.pyc
Size

59KB
MD5

c211795b087596a5f835bb67ae14c97d
SHA1

4db505541aeb79f7063588a83d559207feb68568
SHA256

a9555bcf6c977b3c7e8d18a6516e1e817c0430c5a102b6feb2b50e8582bb84d9
SHA512

3cc5b10e8dfafe9e4bd0636725a9eef14702ff4a0db54970594d116970e79a93c9dbc43351492e02588d3038d335f144dd0d86a258ac32ab128a324d92e2cb01
SSDEEP

1536:BGT9fu6zoNvQry2eFir1Nrwe7VopF3jPSKPKtFdkwmaAzjY:YfGdkZNh76jPrPKXGaoY

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-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000_CLASSES\pyc_auto_file\	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1640	AcroRd32.exe
1640	AcroRd32.exe
1640	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1380 wrote to memory of 1140	1380	cmd.exe	28
PID 1380 wrote to memory of 1140	1380	cmd.exe	28
PID 1380 wrote to memory of 1140	1380	cmd.exe	28
PID 1140 wrote to memory of 1640	1140	rundll32.exe	29
PID 1140 wrote to memory of 1640	1140	rundll32.exe	29
PID 1140 wrote to memory of 1640	1140	rundll32.exe	29
PID 1140 wrote to memory of 1640	1140	rundll32.exe	29

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\difflib.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1380
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\difflib.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1140
- - 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\difflib.pyc"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:1640

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/1380-54-0x000007FEFB8B1000-0x000007FEFB8B3000-memory.dmp

Filesize
8KB

Download
memory/1640-82-0x00000000757A1000-0x00000000757A3000-memory.dmp

Filesize
8KB

Download