58e8cf2a77663a1ff5cc36aa9e0777ce952eaa258c9b8220cadb5a53bed89724

Analysis

max time kernel
150s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
05-02-2023 11:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

encodings/bz2_codec.pyc
Size

2KB
MD5

df92025a794678fcbde84921de6d47d9
SHA1

518e314be1fd311557cd5d7102c3a723f8a70230
SHA256

8f3d12df9c806a0f8b15200ad7200ddc32cd01b993c5b5b01ecbb1ec6e3c2415
SHA512

32ce1784ca9d1f377f29b561ce4fca8e5ab926a595fdf33eb493db65091d1677d814c56faeb5e957f9ab5b141ccd0a3139028362f3713e32471ff21cecc50627

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 10 IoCs

Processes:

rundll32.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_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-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\pyc_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.pyc	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

AcroRd32.exe

pid process

1892 AcroRd32.exe
1892 AcroRd32.exe

pid	process
1892	AcroRd32.exe
1892	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 752 wrote to memory of 1996	752	cmd.exe	rundll32.exe
PID 752 wrote to memory of 1996	752	cmd.exe	rundll32.exe
PID 752 wrote to memory of 1996	752	cmd.exe	rundll32.exe
PID 1996 wrote to memory of 1892	1996	rundll32.exe	AcroRd32.exe
PID 1996 wrote to memory of 1892	1996	rundll32.exe	AcroRd32.exe
PID 1996 wrote to memory of 1892	1996	rundll32.exe	AcroRd32.exe
PID 1996 wrote to memory of 1892	1996	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\encodings\bz2_codec.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:752

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\encodings\bz2_codec.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1996

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\encodings\bz2_codec.pyc"
3⤵
- Suspicious use of SetWindowsHookEx
PID:1892

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/752-54-0x000007FEFC161000-0x000007FEFC163000-memory.dmp

Filesize
8KB

Download
memory/1892-81-0x0000000000000000-mapping.dmp

Download
memory/1892-82-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

Download
memory/1996-76-0x0000000000000000-mapping.dmp

Download