a778818cc08d213d1f66db5fa8b34aabc862569ecb99fd1aea37ff6ccab48400

Analysis

max time kernel
150s
max time network
30s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
12-06-2023 07:25

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General

Target

_weakrefset.pyc
Size

11KB
MD5

685d4aaf13a4f2bb43bec6340f853fa2
SHA1

2cbbad3829a7ecb101e1fe58e34b8651bc153389
SHA256

ac2dfa51d2edb55548f68ac15279b9e09944dda301478e2bb533e7948ed6187c
SHA512

76dcca6e3b7f93155bdbac2f5f94878b710de381c5732e64ef6432f7d709d111640868ea37d70400c4805cbf65289d18a88885f446cb7a25c110cecfa652b4d2
SSDEEP

192:s+2JxBMBSmGt2ob/rxBZ9qpa/awsHXqe11ZFKFbnaJ6My:Pofm5ojd9H/gHaoZQbgXy

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 10 IoCs

Processes:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_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-1-5-21-2961826002-3968192592-354541192-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2961826002-3968192592-354541192-1000_CLASSES\pyc_auto_file\shell	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

848 AcroRd32.exe
848 AcroRd32.exe
848 AcroRd32.exe

pid	process
848	AcroRd32.exe
848	AcroRd32.exe
848	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1316 wrote to memory of 616	1316	cmd.exe	rundll32.exe
PID 1316 wrote to memory of 616	1316	cmd.exe	rundll32.exe
PID 1316 wrote to memory of 616	1316	cmd.exe	rundll32.exe
PID 616 wrote to memory of 848	616	rundll32.exe	AcroRd32.exe
PID 616 wrote to memory of 848	616	rundll32.exe	AcroRd32.exe
PID 616 wrote to memory of 848	616	rundll32.exe	AcroRd32.exe
PID 616 wrote to memory of 848	616	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\_weakrefset.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1316
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\_weakrefset.pyc
  2⤵
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:616
- - 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\_weakrefset.pyc"
    3⤵
    - Suspicious use of SetWindowsHookEx
    PID:848

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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