46c0a369640e5c21bee6ab24c80cc68016bb8884e5a6686f09a10ec22c38b0f4

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
14/05/2024, 04:01

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-14_8538bfe0218f2ce281e469b857ae0cbc_cryptolocker.exe
Size

48KB
MD5

8538bfe0218f2ce281e469b857ae0cbc
SHA1

19e957f1d6811c86d1b032c353713f2f30c1a9c1
SHA256

46c0a369640e5c21bee6ab24c80cc68016bb8884e5a6686f09a10ec22c38b0f4
SHA512

b3dc314929b099105345da0490711874141e75e78f8662ebd4ce8f0b9ca9b691be58aa33e497bcbd402526866202df55ab48e6e4dd61a44b634872ced3c6183c
SSDEEP

768:P6LsoVEeegiZPvEhHSP+gp/QtOOtEvwDpjBBMLZdzuqpXsiE8Wq/Dpkco:P6Q0ElP6G+gJQMOtEvwDpjB8WMlfo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4308-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a000000023400-13.dat	CryptoLocker_rule2
behavioral2/memory/4308-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4160-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4160-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/4308-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a000000023400-13.dat	CryptoLocker_set1
behavioral2/memory/4308-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4160-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4160-27-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-14_8538bfe0218f2ce281e469b857ae0cbc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4160	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 4308 wrote to memory of 4160	4308	2024-05-14_8538bfe0218f2ce281e469b857ae0cbc_cryptolocker.exe	82
PID 4308 wrote to memory of 4160	4308	2024-05-14_8538bfe0218f2ce281e469b857ae0cbc_cryptolocker.exe	82
PID 4308 wrote to memory of 4160	4308	2024-05-14_8538bfe0218f2ce281e469b857ae0cbc_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-14_8538bfe0218f2ce281e469b857ae0cbc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-14_8538bfe0218f2ce281e469b857ae0cbc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4308
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4160

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

Loading Replay Monitor...

Downloads

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

Filesize
48KB

MD5
ed31ca20085bf6684d894963db44c28c

SHA1
afe3b1e8a172305a3b2d07bfabb0e3122b5abc76

SHA256
c2e0d5b5410ac1117674c5f9394148e294cf34f5500bf15397fb60ed228018e7

SHA512
febefe886d266c60990654389da9bd596604d8a2a90ef1b3eea19b5100d6962d37c134de1aad38e5f3bfd70f451050ff6bc4f8212a1b6179bac3f3d3da92caf5

Download Submit
memory/4160-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4160-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4160-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4160-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4308-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4308-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4308-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4308-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4308-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download