87945097592a7625f5761cf9b5233c1b69e9d480ccf2592b35c0b07615ea6f2f

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
12/05/2024, 19:12

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe
Size

37KB
MD5

04585406894e53deeafd0dda8d3c5c31
SHA1

5e1f287765bfa301c7af90933ba7020b4e6aa631
SHA256

87945097592a7625f5761cf9b5233c1b69e9d480ccf2592b35c0b07615ea6f2f
SHA512

dac8f268ccc7b5629bf8a2b0be50d56fd9a07d688285817764994265ef34df78996d1ef2025dd79f4b92ffd28c05584288b84d2fb23b3459074d6bdf273b7fac
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axK3uO:qUmnpomddpMOtEvwDpjjaYaQuO

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1812-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023298-13.dat	CryptoLocker_rule2
behavioral2/memory/1812-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4296-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1812-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023298-13.dat	CryptoLocker_set1
behavioral2/memory/1812-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4296-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1812-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0006000000023298-13.dat	UPX
behavioral2/memory/1812-18-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/4296-27-0x0000000000500000-0x000000000050F000-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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4296	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1812-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0006000000023298-13.dat	upx
behavioral2/memory/1812-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/4296-27-0x0000000000500000-0x000000000050F000-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 1812 wrote to memory of 4296	1812	2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe	82
PID 1812 wrote to memory of 4296	1812	2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe	82
PID 1812 wrote to memory of 4296	1812	2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4296

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
37KB

MD5
2dcb6ef4b880c285d7994feaf1fa9922

SHA1
73cffa6192fc9ed72f53a597845164a98a5feefe

SHA256
975de1415c01ce16a574c53422db799edda485aade0af61ff8fdd0c1cbdc6152

SHA512
c14072fa54bce88b1f63a9b8318393bbb47a68702e0d0c8b6aaef0077a39c2861416a2bbcb0c39a33f8c74880eb87322a53a8eec0e2353986cf61ed067cec8ae

Download Submit
memory/1812-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1812-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1812-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1812-9-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1812-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4296-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4296-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4296-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download