ae0f5a672a85c7b42e5919fc9a7edf242cd5a6991bf745d89e750ef03d3be403

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
15/05/2024, 05:31

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General

Target

2024-05-15_cec9380b6e8d27e6c63b9412e76cf4f3_cryptolocker.exe
Size

46KB
MD5

cec9380b6e8d27e6c63b9412e76cf4f3
SHA1

b4ae481a587d48ce5d03ac1ac054cef7c0fa1aef
SHA256

ae0f5a672a85c7b42e5919fc9a7edf242cd5a6991bf745d89e750ef03d3be403
SHA512

8ead81fbdeaf50ca119415715ae2a585bcf5bdfa484d3d53b5c3ae4be80b0f615ea06078da2e7017be1a6f95253514b6301feb36a442cd83b3c258729d93a8c6
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsJM:V6QFElP6n+gMQMOtEvwDpjyaYaFAh35

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002327d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002327d-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-15_cec9380b6e8d27e6c63b9412e76cf4f3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4896	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 3288 wrote to memory of 4896	3288	2024-05-15_cec9380b6e8d27e6c63b9412e76cf4f3_cryptolocker.exe	82
PID 3288 wrote to memory of 4896	3288	2024-05-15_cec9380b6e8d27e6c63b9412e76cf4f3_cryptolocker.exe	82
PID 3288 wrote to memory of 4896	3288	2024-05-15_cec9380b6e8d27e6c63b9412e76cf4f3_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-15_cec9380b6e8d27e6c63b9412e76cf4f3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-15_cec9380b6e8d27e6c63b9412e76cf4f3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4896

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
46KB

MD5
c7c6a4dc251fed0bfa1d3c025c1dedf7

SHA1
1cc40fb496752ed1a57196a35d2a87fa3472b594

SHA256
d08d4392d9e1d5aa96c02c12022408b09841cbbf1dfa5fd90d13928516d6d8ef

SHA512
f42d958389e69bb4869cf68534908fd0b20eef82eabd467544c035f200e82642f35555547b1b1c30c243e4ac941246367f8c72d7ca3a97db24e0eab2651f526c

Download Submit
memory/3288-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3288-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3288-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4896-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4896-23-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download