85b1902df70fb5ac009e60526fbc615cd64fcacaab9ac18ba31ec41e8fbcfb70

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2024 22:41

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General

Target

2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe
Size

33KB
MD5

7be6f6c2fe873357290bd093628c8fa1
SHA1

024df3e69229d278f51b56337601bab75b29f10e
SHA256

85b1902df70fb5ac009e60526fbc615cd64fcacaab9ac18ba31ec41e8fbcfb70
SHA512

f7d2d8e8e07240e30fb9db2a025432722911b2d8a9e2fbe7ef4e31cdbbbd3033d3d7b1bd64e572d308828c9e9ff9b7cea1782febac08e3140a842b5273bde91a
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qKO:b7o/2n1TCraU6GD1a4Xt9bRU6z

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023221-12.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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5004	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 3128 wrote to memory of 5004	3128	2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe	84
PID 3128 wrote to memory of 5004	3128	2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe	84
PID 3128 wrote to memory of 5004	3128	2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_7be6f6c2fe873357290bd093628c8fa1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3128
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:5004

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
99bb5a378e1a426db5a369d15bb956a7

SHA1
fc76fdb1b30dba40d23b148af4a214495a516232

SHA256
4febede36a0f0091b957830e94ca35ed94ed263a8bfd8473c1fe1781bd87dc73

SHA512
9bdff514684f77b0496a61783e95817fd7969fc2bbf73e323bfaf7cbb0a5d7e55cdb9c2b15f9ac5034fbb7debc34efa7b6a7eb84101a2f8cbc1eb1f9f8665408

Download Submit
memory/3128-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/3128-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/3128-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5004-20-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download