bc9b8cf8152e01d5bb605de7219cb6713b0201931c53dd9a0011dfce13b030d2

Resubmissions

21/08/2023, 16:18

230821-tr7rnafg61 7

21/08/2023, 16:16

230821-trbdfseb79 3

Analysis

max time kernel
150s
max time network
126s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
21/08/2023, 16:18

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General

Target

Monocypher_AEAD_explorer.pyc
Size

22KB
MD5

b5be99205ff4bc96d032734a06d55129
SHA1

730e99fe4a83a7c0cb8990d7a3d887eedc5098c4
SHA256

121ea67e1a34d67ee1e5a24b4791db8a3a413f690815b2c8b754c6f6ac07b761
SHA512

1b97e68dae942a55f6221b1559fbde3e4df42f5653d250c55fa937f16fd67e5b164d1cbe4b959c4a3bb21340aa9f27eb37e681095be4ee35f9acc78a66716560
SSDEEP

384:Ne8X7Jd4ACQVZX7M/xI4F5QHVPt0+8Zeok4JDmmmlji+pNKNNhNNKNxNKNNINKN+:o8X7JdnCQ3X7M/64iPt0+W3ojRpNKNNs

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 9 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000_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-1-5-21-2969888527-3102471180-2307688834-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2969888527-3102471180-2307688834-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2860	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2860	AcroRd32.exe
2860	AcroRd32.exe
2860	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2920 wrote to memory of 2848	2920	cmd.exe	29
PID 2920 wrote to memory of 2848	2920	cmd.exe	29
PID 2920 wrote to memory of 2848	2920	cmd.exe	29
PID 2848 wrote to memory of 2860	2848	rundll32.exe	30
PID 2848 wrote to memory of 2860	2848	rundll32.exe	30
PID 2848 wrote to memory of 2860	2848	rundll32.exe	30
PID 2848 wrote to memory of 2860	2848	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Monocypher_AEAD_explorer.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2920
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Monocypher_AEAD_explorer.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2848
- - 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\Monocypher_AEAD_explorer.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
1e5971ae32f5754c5e2e5d4cefeb3109

SHA1
0d3c7e7288ec7cf5cb7de455d6141a34789e6d82

SHA256
84775615d60f4d0da8abdc43959aaef5629514cbceacfcdcafd8f2b6f41c8e2d

SHA512
9324a34461f7835b1b175d5a744bf8c2457bea2ffa71e78caa151b3a3e4ebac11c09f79830f9d6b7a48fa9b671577797e003c4c4b4cad9d39bfe0799c6de2141

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