55c5d1597c38659a35d613102d2c909a4ba8ce08acf8f36fbb14182afa9acdff

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
18/08/2023, 01:31

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General

Target

bruteforce.pyc
Size

8KB
MD5

4e36132a9c3206b11b36a622f4ecc699
SHA1

3d72312d19f9fee1cddf6c3526806a8255cb305f
SHA256

443ddc1a682c6a08c5269f47c49a7fd7834276ee19c7271daac9aeaad2e42395
SHA512

0415c02fd53071cd884f186e1a57b6295462cba9d36790abf28aebe30ed25e76400d4392c0f8613138b77da76e77ace8bf7391b9de2527a35f0bdf3f77c3ea50
SSDEEP

192:mleBfu/Jg8xPAxzfDYDdw6p7pOt+izzcFQCk3c:PhuRg8CxdSpu+GguCk3c

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-1-5-21-1024678951-1535676557-2778719785-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000_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-1-5-21-1024678951-1535676557-2778719785-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1024678951-1535676557-2778719785-1000_CLASSES\.pyc	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2972	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2972	AcroRd32.exe
2972	AcroRd32.exe
2972	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 2968	2996	cmd.exe	29
PID 2996 wrote to memory of 2968	2996	cmd.exe	29
PID 2996 wrote to memory of 2968	2996	cmd.exe	29
PID 2968 wrote to memory of 2972	2968	rundll32.exe	30
PID 2968 wrote to memory of 2972	2968	rundll32.exe	30
PID 2968 wrote to memory of 2972	2968	rundll32.exe	30
PID 2968 wrote to memory of 2972	2968	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\bruteforce.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\bruteforce.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2968
- - 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\bruteforce.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2972

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
70be5bafe3e3df9a4be110c80cb663be

SHA1
6a46b98a1047db418b77bd8847d87cc78cbd75ea

SHA256
7ade3dbb70968391581a8e80b37f8be9869a2ff1b429b6849c85e071543b611a

SHA512
cd9197843e5cb70700bc62cef5dac43de391f41f7c4b8d84c8abc823972af69c374958e9a42818439391788a2e01f8467d3a8a60084cd26f3c98d4942af1eb39

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