edcb8d8e80eb826ec95ed9ccdc1d4470c3edd1782350187fc9bcd776c6d96095

Resubmissions

06-12-2022 06:15

221206-gzxv7sbc77 3

02-12-2022 17:00

221202-vjcrzsbc51 10

Analysis

max time kernel
151s
max time network
180s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
02-12-2022 17:00

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General

Target

Claim_PE84.vhd
Size

2.0MB
MD5

2fe68553beb0a7b084f1b349d6551d9c
SHA1

c7e8f7b9313e876b10623840989fb07c00203930
SHA256

edcb8d8e80eb826ec95ed9ccdc1d4470c3edd1782350187fc9bcd776c6d96095
SHA512

cf9d306a0948217c32dd865a1926c18405cb0e24aef2eadd4bdd81bf9376783fa1a44de90ddc0926e4e6f41094cff99869b325b6d22a200f8f8161ee177fc0a1
SSDEEP

24576:/wWw8wewswUwBw6gwsw3wTOZqHk2JajfRO8:/wWw8wewswUwBw6gwsw3waZaUY8

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\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.vhd	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_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\vhd_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_auto_file\	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\.vhd\ = "vhd_auto_file"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\vhd_auto_file\shell\Read	rundll32.exe

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

AcroRd32.exe

pid process

632 AcroRd32.exe
632 AcroRd32.exe
632 AcroRd32.exe

pid	process
632	AcroRd32.exe
632	AcroRd32.exe
632	AcroRd32.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

cmd.exerundll32.exe

description	pid	process	target process
PID 608 wrote to memory of 472	608	cmd.exe	rundll32.exe
PID 608 wrote to memory of 472	608	cmd.exe	rundll32.exe
PID 608 wrote to memory of 472	608	cmd.exe	rundll32.exe
PID 472 wrote to memory of 632	472	rundll32.exe	AcroRd32.exe
PID 472 wrote to memory of 632	472	rundll32.exe	AcroRd32.exe
PID 472 wrote to memory of 632	472	rundll32.exe	AcroRd32.exe
PID 472 wrote to memory of 632	472	rundll32.exe	AcroRd32.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Claim_PE84.vhd
1⤵
- Suspicious use of WriteProcessMemory
PID:608

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Claim_PE84.vhd
2⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:472

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\Claim_PE84.vhd"
3⤵
- Suspicious use of SetWindowsHookEx
PID:632

Network

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/472-76-0x0000000000000000-mapping.dmp

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memory/608-54-0x000007FEFC161000-0x000007FEFC163000-memory.dmp

Filesize
8KB

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memory/632-81-0x0000000000000000-mapping.dmp

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memory/632-82-0x0000000075D01000-0x0000000075D03000-memory.dmp

Filesize
8KB

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