5662f0e6361e0fe939b9425edab2f34c28abc4776d7bb17e3e340c7a4f56b9d3

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27/01/2024, 19:28

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General

Target

2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe
Size

41KB
MD5

3d58d73eebf1bb5d8d7bd5e3b5cb1e21
SHA1

d8c2a50223a863e6b86993356c85c2e5b3d8b1c8
SHA256

5662f0e6361e0fe939b9425edab2f34c28abc4776d7bb17e3e340c7a4f56b9d3
SHA512

d6f59f9a9f0cd4646b74efb105ded3644f2f5bafe070854014ed279c20f5db8d59b97819769573290e1eb6f2c6ea6e321eae31461f3aaf3293188ed48cf2d450
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRq0:bc/y2lkF0+Bj0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023233-12.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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2428	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 3024 wrote to memory of 2428	3024	2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe	86
PID 3024 wrote to memory of 2428	3024	2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe	86
PID 3024 wrote to memory of 2428	3024	2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3024
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2428

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
41KB

MD5
c2767093d6305606a9ea5629d7b9e8cd

SHA1
0dfc73af91285707cd20da960f65c7616fa3ae23

SHA256
b36ee72c75fbb7465c68e144d6769527bf256a29df2ea3b3d2eaeaa52490cf76

SHA512
5e101630f7f16e49b0960d3470dc7f7ffa6f9d5f5a714faee142f722cfa9b587da11fb687115a4cd977f4c6e96e870a2883d1fccb230d908054c41e0d588bb03

Download Submit
memory/2428-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3024-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3024-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3024-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download