30b6438a77155337aabf5e47faaca150a320a05ad449f6840db78e1104f4841b

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
05-06-2024 04:36

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-06-05_80827be70c4304b4f8f5683af23795f4_cryptolocker.exe
Size

24KB
MD5

80827be70c4304b4f8f5683af23795f4
SHA1

fd9f422271f6c7e945c10168c83aadde731a1ce9
SHA256

30b6438a77155337aabf5e47faaca150a320a05ad449f6840db78e1104f4841b
SHA512

016369421b1825b898f7ab473fc35d730150e411539d0ebfcf1a7d6765c0a0ff7467a458a9b3c1371dc6a66d07657d0ac5fccbad07a588ea8cee3be69ea58478
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJ1:bVCPwFRo6CpwXFXSqQXfjAsJ1

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4876-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a00000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/732-17-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4876-19-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/732-28-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/4876-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/files/0x000a00000002328e-13.dat	UPX
behavioral2/memory/732-17-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/4876-19-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/732-28-0x0000000008000000-0x000000000800E000-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-05_80827be70c4304b4f8f5683af23795f4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
732	hasfj.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4876-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/files/0x000a00000002328e-13.dat	upx
behavioral2/memory/732-17-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/4876-19-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/732-28-0x0000000008000000-0x000000000800E000-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 4876 wrote to memory of 732	4876	2024-06-05_80827be70c4304b4f8f5683af23795f4_cryptolocker.exe	83
PID 4876 wrote to memory of 732	4876	2024-06-05_80827be70c4304b4f8f5683af23795f4_cryptolocker.exe	83
PID 4876 wrote to memory of 732	4876	2024-06-05_80827be70c4304b4f8f5683af23795f4_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-05_80827be70c4304b4f8f5683af23795f4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_80827be70c4304b4f8f5683af23795f4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4876
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:732

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\hasfj.exe

Filesize
24KB

MD5
06b93ea8a52067cf8c63ebad5996b393

SHA1
f6c9fbfc429b897bba8cc7ea1af78dfe298d73ac

SHA256
9d32faf127e1b17e4ab502c045b75fa539712bde57dec43c735bf664c0ea10fc

SHA512
bae66c7bea2ffda341bb144021ec471541c5690ca771a0f6cd6b55464e7b1de7d3ae2be5bb6e9dc493c56e36589635831714b16e2fe69c708bdce946352d0acd

Download Submit
memory/732-17-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/732-27-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/732-22-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/732-28-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/4876-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/4876-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4876-7-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4876-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4876-19-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download