eb3a0dde867994262fd22df0f5011cda8f7152a43da08b9a52c25d7f24bc24c2

Analysis

max time kernel
226s
max time network
134s
platform
windows7_x64
resource
win7-20230831-en
resource tags

arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
submitted
11/10/2023, 05:26

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General

Target

exe.win-amd64-3.11/lib/Cryptodome/Cipher/_mode_ocb.pyc
Size

20KB
MD5

1ae7bfb9cc903be64fc54f384701ca0e
SHA1

cd763c65da1e1e8b4ba87878e7d29cc62be4f50f
SHA256

9629cd2c8d56d3b0bb2cbb0dcd3600ceabf53f88b20c6f5935828d28f77b4713
SHA512

f272bcddef69d88116af9c440197775aa0d45b854830cad5b8be8006bea3d1f81a3665d8c1b61eb97247dd6883cbfebdb53939d1e8e06ef64db22cee467a4721
SSDEEP

384:cCqHG+qi2jbRJF44h3R422oD9eWWEne47l8vadgETqZr0Tx19j57:cCsG+qJfjhBYZQqa9qhmD9j57

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
Set value (str)	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_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-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-686452656-3203474025-4140627569-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2704	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2704	AcroRd32.exe
2704	AcroRd32.exe
2704	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2548 wrote to memory of 2320	2548	cmd.exe	30
PID 2548 wrote to memory of 2320	2548	cmd.exe	30
PID 2548 wrote to memory of 2320	2548	cmd.exe	30
PID 2320 wrote to memory of 2704	2320	rundll32.exe	31
PID 2320 wrote to memory of 2704	2320	rundll32.exe	31
PID 2320 wrote to memory of 2704	2320	rundll32.exe	31
PID 2320 wrote to memory of 2704	2320	rundll32.exe	31

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\exe.win-amd64-3.11\lib\Cryptodome\Cipher\_mode_ocb.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2548
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\exe.win-amd64-3.11\lib\Cryptodome\Cipher\_mode_ocb.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2320
- - 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\exe.win-amd64-3.11\lib\Cryptodome\Cipher\_mode_ocb.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2704

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

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Downloads

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

Filesize
3KB

MD5
6941afae620dfc1cce93643a5888520f

SHA1
7bbc259fe4abb5583819fe426ff34975faeeefa5

SHA256
71db0c203a692ba6016029282616fcff80dbe3cca534a3c758eb8cdbf11b9b5d

SHA512
aa107a42755d8d99cf4f2f3c22c43420af270078246551da419c5c9f76818f53e84fd298e49b5b79780261bb6e8d7bd9f4109220651391356af64b408602054d

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