7665a1ae50a76f310f05584024ec794ce43d92e3804365411667b71e0ff8098a

Analysis

max time kernel
149s
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
28/03/2024, 09:04

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General

Target

2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe
Size

49KB
MD5

e53f4409f64e3c26782de5ed9a02a6d0
SHA1

2f69b014ae6b9c5e5b6e4d81d666a06e3b34fb00
SHA256

7665a1ae50a76f310f05584024ec794ce43d92e3804365411667b71e0ff8098a
SHA512

2779f7b663f294af5250b36b707e561dc9856e6b5318b05b8093c23e1ec59603713a2e55a969838af1e094d86e5db20b9054d91e4ee2af57f433cd700a8e9cb6
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakNQ:V6a+pOtEvwDpjf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023203-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023203-12.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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4492	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 768 wrote to memory of 4492	768	2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe	86
PID 768 wrote to memory of 4492	768	2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe	86
PID 768 wrote to memory of 4492	768	2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_e53f4409f64e3c26782de5ed9a02a6d0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:768
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4492

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
49KB

MD5
f1c6b23b059124fa2db311f9cbae7b3e

SHA1
dd462911fe589e66a49d48cfd3b86e7da850fe33

SHA256
f70bc5e6dead95ceca567922ee5c0346040e47431c7460524d56d93af55ca077

SHA512
eb85417e26a8c15659b14ad30d5ec05f05c81c23a0a7c1b55e0f63121591ff31fa7e6c75c60d17a94f0bf1232d7c2231b96988a12a4d5295ff0d7c51f1344c37

Download Submit
memory/768-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/768-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/768-2-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4492-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4492-19-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download