7e60950322ff038a01336a246e6e51e4688b653a4933e8ed9aa34cdc0a0cbc71

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
13/03/2024, 20:46

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General

Target

2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe
Size

32KB
MD5

f1d6ace7fbccd81b070fc74bc5b1a658
SHA1

3ae170529ba2dec578fafcc55cd50b9c27efbd98
SHA256

7e60950322ff038a01336a246e6e51e4688b653a4933e8ed9aa34cdc0a0cbc71
SHA512

181b65b19ca0bd7a4fddef3327201a6ef7483c06408fa24b8f39c2e46a56bc1e7aaadcfe28824fe3ab513ab52897f819542a7caddbf11841e347fb1678dde18a
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+jHNGoU:q0zizzOSxMOtEvwDpj/ar1NzU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2820-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001e59e-13.dat	CryptoLocker_rule2
behavioral2/memory/2820-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2068-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2068-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2820-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2068-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2068-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2820-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000001e59e-13.dat	UPX
behavioral2/memory/2820-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2068-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2068-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2068	asih.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 2820 wrote to memory of 2068	2820	2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe	89
PID 2820 wrote to memory of 2068	2820	2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe	89
PID 2820 wrote to memory of 2068	2820	2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_f1d6ace7fbccd81b070fc74bc5b1a658_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2068

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\asih.exe

Filesize
32KB

MD5
f9d8fec54ac22d9ecf3ae832c8ea3e4b

SHA1
349f5fe5133e5712dead4809ff6e90ab5d1c146d

SHA256
b73f1d187edc32e092a9c1cbd2eb3ce42b0b16889f62710854746e63d3f4085e

SHA512
928789cfc7420baafc906d3cf4fb5d0fcbfc3f8499031880baac31e5b4b06c60927a6e76a613ff1019ae7746d87f908c1bd08b725990608e29a9f1f738a0bbf0

Download Submit
memory/2068-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2068-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2068-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2068-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2820-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2820-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2820-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/2820-3-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/2820-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download