eb3a0dde867994262fd22df0f5011cda8f7152a43da08b9a52c25d7f24bc24c2

Analysis

max time kernel
212s
max time network
121s
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_ctr.pyc
Size

15KB
MD5

00884f39ecf2d859e86665c36cd40a54
SHA1

6300e6049399c23d2529e0f3ab1fd237720574c0
SHA256

27be87fbc5bee6ce4a89b15d36b8a94ae045d6c3448c68b50304b28704afadc8
SHA512

a543895082d083b858b8a1b08c47fd407892f54f9d275c3eacdb418eaa40e7fa9b63f48cdfad003786a016cca5117993ae49cb481e5d6c48edc6c997519d720e
SSDEEP

192:mtGDPkH7KxiM16TsyXiFfU4PkdU4fYrLEj4SkIkjaXfAhS1LbM:mwb0SDe2fTPkdTfYrLPSkI+aX31M

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-1-5-21-3513876443-2771975297-1923446376-1000_Classes\Local Settings	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3513876443-2771975297-1923446376-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3513876443-2771975297-1923446376-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3513876443-2771975297-1923446376-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3513876443-2771975297-1923446376-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3513876443-2771975297-1923446376-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3513876443-2771975297-1923446376-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3513876443-2771975297-1923446376-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3513876443-2771975297-1923446376-1000_CLASSES\pyc_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3028	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3028	AcroRd32.exe
3028	AcroRd32.exe
3028	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2776 wrote to memory of 2532	2776	cmd.exe	30
PID 2776 wrote to memory of 2532	2776	cmd.exe	30
PID 2776 wrote to memory of 2532	2776	cmd.exe	30
PID 2532 wrote to memory of 3028	2532	rundll32.exe	31
PID 2532 wrote to memory of 3028	2532	rundll32.exe	31
PID 2532 wrote to memory of 3028	2532	rundll32.exe	31
PID 2532 wrote to memory of 3028	2532	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_ctr.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2776
- 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_ctr.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2532
- - 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_ctr.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:3028

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
4dc3e688b96cb1ff366807f5ac4fdefe

SHA1
e893d7a6b3166aa8da494d374b5353a1903c6279

SHA256
34e6b90a2d03e1fbf1624be7c03475abec6eedb41034b5a629c9c0efca9e6591

SHA512
573eb70c14eaa824ea0d77f8f96745ffa5d9050bc58600c657fdad7dc217a61081f68ca88b109c215dfb4228c098abe2cb22cf8c69c87560665f10ff051c9b33

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