8018de196e243074ea445ca252f8123f35b89887f930bb0c1e6adcc21a989071

Analysis

max time kernel
148s
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
28/01/2024, 15:26

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General

Target

2024-01-28_5d6ddab725e9f4a8667f3f78db7ab7fb_cryptolocker.exe
Size

42KB
MD5

5d6ddab725e9f4a8667f3f78db7ab7fb
SHA1

a41c99d08f313914c76d6c4b1fb51adb0c23a17b
SHA256

8018de196e243074ea445ca252f8123f35b89887f930bb0c1e6adcc21a989071
SHA512

046e020ed88e659cf4173506a513d63839d3e3b2a8d2288cffa98167cf1aeca52d0689fb37d370af0f33bd3dd91cdf83c83cf5a25df441dac5cf78b58e8ad247
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphei:bc/y2lkF0+Bej

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231fb-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-28_5d6ddab725e9f4a8667f3f78db7ab7fb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2096	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 4492 wrote to memory of 2096	4492	2024-01-28_5d6ddab725e9f4a8667f3f78db7ab7fb_cryptolocker.exe	87
PID 4492 wrote to memory of 2096	4492	2024-01-28_5d6ddab725e9f4a8667f3f78db7ab7fb_cryptolocker.exe	87
PID 4492 wrote to memory of 2096	4492	2024-01-28_5d6ddab725e9f4a8667f3f78db7ab7fb_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-28_5d6ddab725e9f4a8667f3f78db7ab7fb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_5d6ddab725e9f4a8667f3f78db7ab7fb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4492
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2096

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
43KB

MD5
95d8f7b03541230dbb344a547a21eacc

SHA1
550f3386803e5e80aff0005a94fe2bf036d344f0

SHA256
0233d2e414be6fff933013f48a3a3ed97f153310ccfe2265282867a11a0001be

SHA512
4ddabdd9de751b1219ae458f703a9d4d0255ec1f0caa27da363a2642caacd50f199f84b17f264992f7cda41548b835c99be675af4092f33ab9d450c9d721409b

Download Submit
memory/2096-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4492-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4492-1-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/4492-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download