190aa963a6a8f6baf8454264cb86dda5a318d09c731be0e1bfe1275473ce8058

Analysis

max time kernel
150s
max time network
126s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
27/11/2023, 15:07

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General

Target

codecs.pyc
Size

43KB
MD5

de91b2473258f1d41907b13869c71cfd
SHA1

0fb13bdb5259bd6a9892c140d85937b5ff9e9e57
SHA256

26f5af7ce859a1016d0dd30ae1084751d18e50b6b2ce991314fe060ae6880845
SHA512

0291a1479051402f8921f468d60ddd9524dfbf3d9fbaa5c24c551cbcb65682b4456cd5e0411506f515545dda6d13e6b3024c9a3dfd2f04520286ca0c760ab207
SSDEEP

768:mctNHwz9foVdWcgxVeNYKbgP9NJgOs6bW0p1jxgabIBDvU2Ztq3EmGTfF2yEa684:mFrxVvZksxxg8IBQ2Ztq3EmGTfF2ha4

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-1-5-21-1154728922-3261336865-3456416385-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_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-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-1154728922-3261336865-3456416385-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2700	AcroRd32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2700	AcroRd32.exe
2700	AcroRd32.exe
2700	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 2372	1120	cmd.exe	29
PID 1120 wrote to memory of 2372	1120	cmd.exe	29
PID 1120 wrote to memory of 2372	1120	cmd.exe	29
PID 2372 wrote to memory of 2700	2372	rundll32.exe	30
PID 2372 wrote to memory of 2700	2372	rundll32.exe	30
PID 2372 wrote to memory of 2700	2372	rundll32.exe	30
PID 2372 wrote to memory of 2700	2372	rundll32.exe	30

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\codecs.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\codecs.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2372
- - 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\codecs.pyc"
    3⤵
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2700

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
4f8068531d3e3a26f962d265020f66c3

SHA1
df3356fae63f6ab7314c706e1c7c1fb373deed41

SHA256
95d9b8239e5ab70a314550ca9597cbd1bcf16ca53facfdf42b10ec590a54d8dc

SHA512
fb074fa7c63e04a120b2a8452c11974fdca6577056394dea6b3121f4c277129ea68293a11aeb4072dcbecd7ecd14276eb9c314775a60bbdde73d6cd387b73fed

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