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

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General

Target

copyreg.pyc
Size

4KB
MD5

78abb42c4d6be4c73515aa3d54bb4490
SHA1

638b423b88860e00ec05c00a676d6a1f0959c8fc
SHA256

5640ce17f749d268f4bacbe60990e54dec77805aa83867d41697f37015865b5d
SHA512

e7e0dcdecd96befaae7d2b721cbeed3865411740c5b1c742c3a7922623fddb9ee543c54cf0f014ffb3db187abd9cd5a9fa6c7930a504b50b2ac25345395d5447
SSDEEP

96:ApCI7QMLHI9jOeSVEZXaruKxbbJJdbTKqvesaCWfqmov2LYHjmTw9EqH3TAZCZZ:mvHGvGdruKpbRu4e2WfhhLYHjmTCH3T5

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-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\pyc_auto_file\shell\Read\command	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\pyc_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\pyc_auto_file\	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
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\pyc_auto_file\shell	rundll32.exe
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\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

460 AcroRd32.exe
460 AcroRd32.exe
460 AcroRd32.exe

pid	process
460	AcroRd32.exe
460	AcroRd32.exe
460	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 836 wrote to memory of 1512	836	cmd.exe	rundll32.exe
PID 836 wrote to memory of 1512	836	cmd.exe	rundll32.exe
PID 836 wrote to memory of 1512	836	cmd.exe	rundll32.exe
PID 1512 wrote to memory of 460	1512	rundll32.exe	AcroRd32.exe
PID 1512 wrote to memory of 460	1512	rundll32.exe	AcroRd32.exe
PID 1512 wrote to memory of 460	1512	rundll32.exe	AcroRd32.exe
PID 1512 wrote to memory of 460	1512	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\copyreg.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:836

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\copyreg.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1512

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\copyreg.pyc"
3⤵
- Suspicious use of SetWindowsHookEx
PID:460

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/460-81-0x0000000000000000-mapping.dmp

Download
memory/460-82-0x0000000075A11000-0x0000000075A13000-memory.dmp

Filesize
8KB

Download
memory/836-54-0x000007FEFB881000-0x000007FEFB883000-memory.dmp

Filesize
8KB

Download
memory/1512-76-0x0000000000000000-mapping.dmp

Download