f8fe943bb084560bdbcf7edd2b487f96bd3cfc58d82972ace62f71d9fa5fc8fb

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
27/05/2024, 12:25

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General

Target

2024-05-27_15f0dfa248584a3d73d2b2e05aa45f02_cryptolocker.exe
Size

38KB
MD5

15f0dfa248584a3d73d2b2e05aa45f02
SHA1

a516e78a83557fc5380a430b3fdde8484c1f0229
SHA256

f8fe943bb084560bdbcf7edd2b487f96bd3cfc58d82972ace62f71d9fa5fc8fb
SHA512

0c977d49fa22c312fba8a8f02512c20f2888e65f1a03ddc9fed08bf7c0af375b7d5a437270df4387f959a7914f90def377efc82c01ea3f084a7d28bb4c6d7dba
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mhA:bc/y2lLRU6zA6qi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000233de-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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-27_15f0dfa248584a3d73d2b2e05aa45f02_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2604	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 4864 wrote to memory of 2604	4864	2024-05-27_15f0dfa248584a3d73d2b2e05aa45f02_cryptolocker.exe	81
PID 4864 wrote to memory of 2604	4864	2024-05-27_15f0dfa248584a3d73d2b2e05aa45f02_cryptolocker.exe	81
PID 4864 wrote to memory of 2604	4864	2024-05-27_15f0dfa248584a3d73d2b2e05aa45f02_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-27_15f0dfa248584a3d73d2b2e05aa45f02_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_15f0dfa248584a3d73d2b2e05aa45f02_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4864
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2604

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
38KB

MD5
b232adbd8ec540e0519b3d7bcc61f7ee

SHA1
813da0d4b19ff35128f1c0f620bf6c94a2d2279d

SHA256
3673c2caaed33cad7f63c55f50d67b25f7fdebe57dd8dd927bae78b09848a9b9

SHA512
90e7590dc3e552690a49ff9710febbdb3b3eaa9ff0b89aa48f1b8ebc7e7e1651868d8d3c90ce948c01cd79877495e0841958a1f38291b0056ad7987ec4288ffb

Download Submit
memory/2604-25-0x0000000001FE0000-0x0000000001FE6000-memory.dmp

Filesize
24KB

Download
memory/4864-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4864-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4864-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download