0be56c7c320207280f5c9bfe7bf13e828c7a14b68121ae2258e2df22ea37b3cc

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
09/04/2024, 13:46

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General

Target

2024-04-09_ae6f17bc76d44cf4eca4075e2314cc23_cryptolocker.exe
Size

41KB
MD5

ae6f17bc76d44cf4eca4075e2314cc23
SHA1

eee05fda94b6bdd41b16d50f0728f54002c99838
SHA256

0be56c7c320207280f5c9bfe7bf13e828c7a14b68121ae2258e2df22ea37b3cc
SHA512

02144fad9eb4f24ac3c80037493808140baee9999bbe25439d09ccc9defb3b218964a0bdc07b8979ea631d2619c48ccb7cc725f0735f3c20fbcdd960b1cba9ca
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRYtsh:bc/y2lkF0+BlI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023209-12.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	2024-04-09_ae6f17bc76d44cf4eca4075e2314cc23_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5008	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 4812 wrote to memory of 5008	4812	2024-04-09_ae6f17bc76d44cf4eca4075e2314cc23_cryptolocker.exe	86
PID 4812 wrote to memory of 5008	4812	2024-04-09_ae6f17bc76d44cf4eca4075e2314cc23_cryptolocker.exe	86
PID 4812 wrote to memory of 5008	4812	2024-04-09_ae6f17bc76d44cf4eca4075e2314cc23_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-09_ae6f17bc76d44cf4eca4075e2314cc23_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_ae6f17bc76d44cf4eca4075e2314cc23_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4812
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:5008

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
42KB

MD5
73f7c59337d9e7341cf1e77e8c2efecf

SHA1
e9996fadb9273ef8b4db9b8a467334c0d1b3eda5

SHA256
5a750bb00fc4474bc3bbd06a6d71dbb5ccac2282e6422213e17764bb8a7c5cf8

SHA512
eeed03bc3340524152f4b80b107e7b52f3f7fdc602b044857920f94f9af2cd264f8573f422eb88839af948cf86e4d14a7c653b3f20737c5870bdf9bcb24bb024

Download Submit
memory/4812-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4812-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4812-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5008-20-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download