186f09e4d08fd6f154873f211b563bf9bf97f58bf1e76054a96fe87cfbbdd319

Analysis

max time kernel
152s
max time network
182s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/03/2024, 02:43

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General

Target

2024-03-10_9bcab0a333801ccecfc6d4a4ab0cfe68_cryptolocker.exe
Size

40KB
MD5

9bcab0a333801ccecfc6d4a4ab0cfe68
SHA1

ae4ae8e8ffdcb6b472f1eafc0050582d57dba017
SHA256

186f09e4d08fd6f154873f211b563bf9bf97f58bf1e76054a96fe87cfbbdd319
SHA512

28e490d7ab90921f623d5eef6b47321c84e209212f252e2a7ef3d0b56bbb2cc2e9652ed7dd5e58dbf5424ae4e9a25271a25cd2f25c49f7e62c843628364e944c
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqZ:bc/y2lkF0+BjZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023232-12.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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-10_9bcab0a333801ccecfc6d4a4ab0cfe68_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4772	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 2920 wrote to memory of 4772	2920	2024-03-10_9bcab0a333801ccecfc6d4a4ab0cfe68_cryptolocker.exe	90
PID 2920 wrote to memory of 4772	2920	2024-03-10_9bcab0a333801ccecfc6d4a4ab0cfe68_cryptolocker.exe	90
PID 2920 wrote to memory of 4772	2920	2024-03-10_9bcab0a333801ccecfc6d4a4ab0cfe68_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-10_9bcab0a333801ccecfc6d4a4ab0cfe68_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_9bcab0a333801ccecfc6d4a4ab0cfe68_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2920
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4772

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

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Downloads

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

Filesize
40KB

MD5
5af33c495b07297af96b3c34866c892d

SHA1
ac6b1aa2811c9523d6ce290678eeb8a70e3983f4

SHA256
acf49cbc059a650b86528ffc9adf6ea72baba79bebecea320fda2ccb307f35ff

SHA512
53d565d5ce6e14275d923fc9e54e474570939f48416ab6baa7d72dc4af0daedc835b71bd3e967c3e0af2b8a96c7e11a57ececde1024c1cb690188686f72d58d7

Download Submit
memory/2920-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2920-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2920-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4772-20-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download