58e8cf2a77663a1ff5cc36aa9e0777ce952eaa258c9b8220cadb5a53bed89724

Analysis

max time kernel
151s
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

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General

Target

_collections_abc.pyc
Size

31KB
MD5

bdd5e740d9f5f3098c61071b16a25098
SHA1

5275b0147b9fc299cfb7440f822d6d9b3fb2e2a6
SHA256

1999ef0fb54884aaa2c47eb952d1d0f5b63eff25afb5f43975fe08463d2e52cf
SHA512

84f4867b16c70a7f80b4fbac5633d9eb0ddaafec7139e16af8fb67c427e2db50fbcf426906440e9fa35b41853ce47f4db62818c4f9c83c273d86dff51b00ce43
SSDEEP

768:4pDSJBiWAf7ykm4y1BhimAqrEHzerKEEh/c3Ebj:8WkWBkmZ1BhimAUEHYKE0E3E

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
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\Read\command	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_auto_file	rundll32.exe
Set value (str)	\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	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\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\shell	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

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

1776 AcroRd32.exe
1776 AcroRd32.exe
1776 AcroRd32.exe

pid	process
1776	AcroRd32.exe
1776	AcroRd32.exe
1776	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1664 wrote to memory of 1744	1664	cmd.exe	rundll32.exe
PID 1664 wrote to memory of 1744	1664	cmd.exe	rundll32.exe
PID 1664 wrote to memory of 1744	1664	cmd.exe	rundll32.exe
PID 1744 wrote to memory of 1776	1744	rundll32.exe	AcroRd32.exe
PID 1744 wrote to memory of 1776	1744	rundll32.exe	AcroRd32.exe
PID 1744 wrote to memory of 1776	1744	rundll32.exe	AcroRd32.exe
PID 1744 wrote to memory of 1776	1744	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\_collections_abc.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\_collections_abc.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1744

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\_collections_abc.pyc"
3⤵
- Suspicious use of SetWindowsHookEx
PID:1776

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

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Downloads

memory/1664-54-0x000007FEFB591000-0x000007FEFB593000-memory.dmp

Filesize
8KB

Download
memory/1744-76-0x0000000000000000-mapping.dmp

Download
memory/1776-81-0x0000000000000000-mapping.dmp

Download
memory/1776-82-0x0000000074AD1000-0x0000000074AD3000-memory.dmp

Filesize
8KB

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