cb1fa16f15aaef090a93ee7924607781bca317857aee6ef9e0a1fe34e3b38b5f

Analysis

max time kernel
151s
max time network
14s
platform
windows7_x64
resource
win7v20210408
submitted
27-06-2021 01:22

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General

Target

encodings/cp1255.pyc
Size

2KB
MD5

fce0d534a2c804374741e7e898ac8c8c
SHA1

a99c77a7a23eefcf6c110913d6ecd95cf123d61e
SHA256

9565822bb313969c633b1a4aeab54329aa14fcca63ebfe35c9221e368196d0eb
SHA512

3fbfa22ef68fcd267b656ead060039b5239e672dcdf1ed9f92e08c46328b28dfcdef14426fe49e7346aef54d3244650c67982eac4dffc1cd77156a68ef67aba6

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-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\pyc_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\.pyc\ = "pyc_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\pyc_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\pyc_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_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-1-5-21-2455352368-1077083310-2879168483-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\pyc_auto_file	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\.pyc	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\pyc_auto_file\shell	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

AcroRd32.exe

pid process

776 AcroRd32.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

776 AcroRd32.exe
776 AcroRd32.exe
776 AcroRd32.exe

pid	process
776	AcroRd32.exe

pid	process
776	AcroRd32.exe
776	AcroRd32.exe
776	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 1996 wrote to memory of 612	1996	cmd.exe	rundll32.exe
PID 1996 wrote to memory of 612	1996	cmd.exe	rundll32.exe
PID 1996 wrote to memory of 612	1996	cmd.exe	rundll32.exe
PID 612 wrote to memory of 776	612	rundll32.exe	AcroRd32.exe
PID 612 wrote to memory of 776	612	rundll32.exe	AcroRd32.exe
PID 612 wrote to memory of 776	612	rundll32.exe	AcroRd32.exe
PID 612 wrote to memory of 776	612	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\encodings\cp1255.pyc
1⤵
- Suspicious use of WriteProcessMemory
PID:1996

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\encodings\cp1255.pyc
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:612

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\cp1255.pyc"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
PID:776

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/612-61-0x0000000000000000-mapping.dmp

Download
memory/776-63-0x0000000000000000-mapping.dmp

Download
memory/776-64-0x00000000767B1000-0x00000000767B3000-memory.dmp

Filesize
8KB

Download
memory/1996-60-0x000007FEFC051000-0x000007FEFC053000-memory.dmp

Filesize
8KB

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