0aaf43161802467482217f888e3cd14cdbd393ee1fa93e3be0d3888b4ef94b6a

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/04/2024, 08:26

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General

Target

2024-04-11_0d98162ccb08aed50e0d5b71695e44b0_cryptolocker.exe
Size

41KB
MD5

0d98162ccb08aed50e0d5b71695e44b0
SHA1

4d7700ce777081aca6f1fc3479d3dccdf30400ae
SHA256

0aaf43161802467482217f888e3cd14cdbd393ee1fa93e3be0d3888b4ef94b6a
SHA512

65cea1a148b8fcfc8972406793f7bf1bf819c9f91b5e92a1d7a0747d099c00955397bcd98b88c48a9fd3f2dc1cedff4c11eb8f45eada254d2cee0cae32dfab19
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRYtsV:bc/y2lkF0+BlE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000224f7-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-04-11_0d98162ccb08aed50e0d5b71695e44b0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2704	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 3956 wrote to memory of 2704	3956	2024-04-11_0d98162ccb08aed50e0d5b71695e44b0_cryptolocker.exe	84
PID 3956 wrote to memory of 2704	3956	2024-04-11_0d98162ccb08aed50e0d5b71695e44b0_cryptolocker.exe	84
PID 3956 wrote to memory of 2704	3956	2024-04-11_0d98162ccb08aed50e0d5b71695e44b0_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-11_0d98162ccb08aed50e0d5b71695e44b0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_0d98162ccb08aed50e0d5b71695e44b0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2704

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
17e5b9b7fc153a88c9df9cd87b5ece27

SHA1
a7d6d1a849d39d74fff994d4d530e3cb39fba75b

SHA256
faf2348241fe51195668161463fb37c4b3b85266e65ffeb5db40de30dd052937

SHA512
292efe9198e0307f42a20f88a4ac11089df98275745baa9caeb53fb75cca35b06533f343d77ca575c33f29e9f625d6b2ac10afa6a55c314eb2cae95fbb11a607

Download Submit
memory/2704-20-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/3956-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3956-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3956-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download