bd69c931b19d15517d25de9dbef3ee7789edc457f8e0237273a811eb80e7cc4d

Analysis

max time kernel
149s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
10-03-2024 09:52

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General

Target

2024-03-10_ffc0e0aac5a40a83d700260f0643e5b8_cryptolocker.exe
Size

34KB
MD5

ffc0e0aac5a40a83d700260f0643e5b8
SHA1

9f00cc25927aa70b056b906dc467fbd572f00729
SHA256

bd69c931b19d15517d25de9dbef3ee7789edc457f8e0237273a811eb80e7cc4d
SHA512

bc37bb972202f1044b970071ad202fdaa75d7742737407dc25272e504febf29045e4413f5b6f6877489f8c675fe0c79119f399a3e7bdada258eec764f84145b0
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qE4kb7:b7o/2n1TCraU6GD1a4Xt9bRU6zA7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f7-12.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	2024-03-10_ffc0e0aac5a40a83d700260f0643e5b8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4644	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 2816 wrote to memory of 4644	2816	2024-03-10_ffc0e0aac5a40a83d700260f0643e5b8_cryptolocker.exe	85
PID 2816 wrote to memory of 4644	2816	2024-03-10_ffc0e0aac5a40a83d700260f0643e5b8_cryptolocker.exe	85
PID 2816 wrote to memory of 4644	2816	2024-03-10_ffc0e0aac5a40a83d700260f0643e5b8_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-10_ffc0e0aac5a40a83d700260f0643e5b8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_ffc0e0aac5a40a83d700260f0643e5b8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4644

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
34KB

MD5
c907284cd5363aa2b8eea34b27b41422

SHA1
f91831635ed54af4de175e4dd042ba829ca388aa

SHA256
44dac4ad2466aef8f1d83f55b699273da5da5d54929ab91b7081488a893f5e54

SHA512
8922ed24275995c4fdd2e7cbe1fe7591a33836fb8aea1587716659b324a2b3fefb3e4a7897cda1eb3aa366ec25b33fffd8fc3b6171a0f4defa12bb3f439f068e

Download Submit
memory/2816-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2816-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/2816-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4644-21-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download