58e8cf2a77663a1ff5cc36aa9e0777ce952eaa258c9b8220cadb5a53bed89724

Analysis

max time kernel
150s
max time network
45s
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/charmap.pyc
Size

2KB
MD5

51b1c9f8790a32f75171200a22da11c6
SHA1

d60e02d557c05ee68636534b480da1bad1b030ec
SHA256

3e6437462d09fd58d7df10053a9023dffb1a959ab92ca7b5b437b7dc7f2c1f40
SHA512

32a1cff7df6f13aabd5516e1c50cdf2f59c0e49413b5582666decf5d1c66d92d9adc68a0c79a7114dec26b92f35b4aaaea9c18496cea5cf1b4d1ccb5bd4ac497

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-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_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-1-5-21-2292972927-2705560509-2768824231-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000_CLASSES\.pyc	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

1920 AcroRd32.exe
1920 AcroRd32.exe
1920 AcroRd32.exe

pid	process
1920	AcroRd32.exe
1920	AcroRd32.exe
1920	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 656 wrote to memory of 2024	656	cmd.exe	rundll32.exe
PID 656 wrote to memory of 2024	656	cmd.exe	rundll32.exe
PID 656 wrote to memory of 2024	656	cmd.exe	rundll32.exe
PID 2024 wrote to memory of 1920	2024	rundll32.exe	AcroRd32.exe
PID 2024 wrote to memory of 1920	2024	rundll32.exe	AcroRd32.exe
PID 2024 wrote to memory of 1920	2024	rundll32.exe	AcroRd32.exe
PID 2024 wrote to memory of 1920	2024	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\encodings\charmap.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:656

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\encodings\charmap.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2024

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\charmap.pyc"
3⤵
- Suspicious use of SetWindowsHookEx
PID:1920

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/656-54-0x000007FEFB6B1000-0x000007FEFB6B3000-memory.dmp

Filesize
8KB

Download
memory/1920-81-0x0000000000000000-mapping.dmp

Download
memory/1920-82-0x0000000075131000-0x0000000075133000-memory.dmp

Filesize
8KB

Download
memory/2024-76-0x0000000000000000-mapping.dmp

Download