3378a70f8f0d863e094cbd3389d400cf8903508bd2fd528d04b96ca1583f1082

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/02/2024, 16:44

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General

Target

2024-02-18_464f6ba5d919a2a13be62d99c43cbcf3_cryptolocker.exe
Size

32KB
MD5

464f6ba5d919a2a13be62d99c43cbcf3
SHA1

b92e98b3ab85358f1545fc13b58e7e43b273fa36
SHA256

3378a70f8f0d863e094cbd3389d400cf8903508bd2fd528d04b96ca1583f1082
SHA512

61003056eff7d0b444b3ba5a89d90050fa5d3754656162017d74d95d106f173d940d4bb4ac3fa4df8e09e3139bc256b90c4c3e5e95af15bd6576d2b6d0d032d0
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qbSFS:b7o/2n1TCraU6GD1a4Xt9bRU62FS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023173-12.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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-18_464f6ba5d919a2a13be62d99c43cbcf3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2032	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 4344 wrote to memory of 2032	4344	2024-02-18_464f6ba5d919a2a13be62d99c43cbcf3_cryptolocker.exe	86
PID 4344 wrote to memory of 2032	4344	2024-02-18_464f6ba5d919a2a13be62d99c43cbcf3_cryptolocker.exe	86
PID 4344 wrote to memory of 2032	4344	2024-02-18_464f6ba5d919a2a13be62d99c43cbcf3_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-18_464f6ba5d919a2a13be62d99c43cbcf3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_464f6ba5d919a2a13be62d99c43cbcf3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4344
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2032

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
33KB

MD5
6ccd6bd7df6c893f6781ffa73b2f0da0

SHA1
6557de7ef5b29da20467b298b9a70f0e5737f6e4

SHA256
18a51e0468580c605c9fd620376a94dd92d3b3a34eb4baa26a292f9191105bc9

SHA512
3d400c7adef87a1053f85b8f163335f713d52bb2513b5f32995c64d773acdc5322fefa0279448ac488a26fbd924b5fbb1488c9923cbfe3a91ebbffc6e13d0e1c

Download Submit
memory/2032-21-0x0000000001FA0000-0x0000000001FA6000-memory.dmp

Filesize
24KB

Download
memory/4344-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4344-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4344-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download