fcb02cd409a98138868a350bfb05f3ce259b7c11888a651d9360d837459f58ca

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
31-05-2024 09:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe
Size

45KB
MD5

51447b226dfe0dc0c87f956799efb3aa
SHA1

9dd3af0cf7e5319c51ab1e92433d9893f0d73742
SHA256

fcb02cd409a98138868a350bfb05f3ce259b7c11888a651d9360d837459f58ca
SHA512

c00f177ffefafc1672939614d63c6df06324c3c8ea03ed3dea3234c418c4054196be1e874090781968d50744ab480868bf52f351dffd7458c2ac87dad603419b
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqK:bc/y2lkF0+BeqK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002327c-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3000	rewok.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3076 wrote to memory of 3000	3076	2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe	81
PID 3076 wrote to memory of 3000	3076	2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe	81
PID 3076 wrote to memory of 3000	3076	2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_51447b226dfe0dc0c87f956799efb3aa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
46KB

MD5
9b696e4eef9923724f061cccb6eee3bd

SHA1
6b219223cc5a73389ef50c6ec77959bce5402818

SHA256
371672d4408db3d29137a48fc048370b4f861ba3f12612e07527640b8ae2545f

SHA512
88f353497190ce75b20d7050d9963a4a462c3261134b3aaa7815ea74b0c94ebaf40eeca5062c49d2269524d232bb452658e7c634e14e2d1d099d33e19a93ab97

Download Submit
memory/3000-25-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/3076-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3076-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3076-8-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download