02a7e9b9099d9bda013fdf0cc3ec6675353e29971e00ed178805cf7e5c5563d0

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2024, 07:24

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General

Target

2024-02-02_1b888dd6d37bdeb078a50c96b5e477f0_cryptolocker.exe
Size

39KB
MD5

1b888dd6d37bdeb078a50c96b5e477f0
SHA1

40d32478fca83293796ed9cab76cb0e08a423dc5
SHA256

02a7e9b9099d9bda013fdf0cc3ec6675353e29971e00ed178805cf7e5c5563d0
SHA512

a957f709f8797cc9e2258e914dd61ff6f9f9406160f99406e28c8ed87a0d6e134ab5d9b6697e550b47d25cf386788177fcd94cd1bd9650ab4ae633ce3ce6d857
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpjeJQLI3JnoehFOgB:V6QFElP6n+gMQMOtEvwDpjeJQy1hogB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023211-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023211-12.dat	CryptoLocker_set1

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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-02_1b888dd6d37bdeb078a50c96b5e477f0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
60	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 872 wrote to memory of 60	872	2024-02-02_1b888dd6d37bdeb078a50c96b5e477f0_cryptolocker.exe	25
PID 872 wrote to memory of 60	872	2024-02-02_1b888dd6d37bdeb078a50c96b5e477f0_cryptolocker.exe	25
PID 872 wrote to memory of 60	872	2024-02-02_1b888dd6d37bdeb078a50c96b5e477f0_cryptolocker.exe	25

C:\Users\Admin\AppData\Local\Temp\2024-02-02_1b888dd6d37bdeb078a50c96b5e477f0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_1b888dd6d37bdeb078a50c96b5e477f0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:872
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:60

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
39KB

MD5
45f0826f46a841674ad940dbda661432

SHA1
f180c879a88a5ed7519692c2e02bd188e338c4aa

SHA256
3920758e80500f0c474ee1de6a0491c8d500014481acb5f82987a2c4e5ef5692

SHA512
2509910f83c1b9529ba7ab7bd7c6cc714e3dfc177eb2bc6cff2fab87d88dbd5d707002b78062ee0ef52ccaba4d271cf877757c752688775d05759b9580157f9e

Download Submit
memory/60-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/60-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/872-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/872-2-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/872-0-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download