4624aae5c3cd4d994d8dc3f800df640d667fbc3e88742874e0f21f4c3620bac9

Analysis

max time kernel
149s
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
21/05/2024, 15:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe
Size

68KB
MD5

534003edc0cf10464fcaa6b66b8b8036
SHA1

cd29699d53c6b16ada8fac25198472e411d8b214
SHA256

4624aae5c3cd4d994d8dc3f800df640d667fbc3e88742874e0f21f4c3620bac9
SHA512

6e322f107e5607b9f6d44ce262c8c7eea552741be4d14a0a824c9b63da63c752e5bfd95c01202635becc2e06e74d941fb605ac55a279731768e5ca0e537618f5
SSDEEP

1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAek:78SEOtEvwDpjWYvQd2Px

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2460-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023286-13.dat	CryptoLocker_rule2
behavioral2/memory/2460-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3568-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2460-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023286-13.dat	CryptoLocker_set1
behavioral2/memory/2460-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3568-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/2460-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0008000000023286-13.dat	UPX
behavioral2/memory/2460-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/3568-26-0x0000000000500000-0x000000000050F000-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3568	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2460-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0008000000023286-13.dat	upx
behavioral2/memory/2460-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3568-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 2460 wrote to memory of 3568	2460	2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe	83
PID 2460 wrote to memory of 3568	2460	2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe	83
PID 2460 wrote to memory of 3568	2460	2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3568

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
69KB

MD5
024a143e0a8e33d9bdf886a873ea1204

SHA1
a364edfae8b5abb17118fedda508646b9afc498b

SHA256
7db8093b625868e1f13a768e74735a6d1106b1ed28ed8ae93be8db6bf7af1e06

SHA512
dd8f4e264f7effc75016f07cec9ace71844e035d430af785206791793bae0c9f9ba94d0b5050852233e32d76a095839312d7e12f4b0653863ce1f02a7b6ec417

Download Submit
memory/2460-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2460-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2460-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2460-3-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/2460-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3568-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3568-25-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/3568-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download