60544f9fcda6acd68a5d22f34617fb3c5a36caac3ef7eb3843256397db37c988

Analysis

max time kernel
148s
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
22-05-2024 02:46

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe
Size

52KB
MD5

b6865062b539ce49a0b6241ba6a621fd
SHA1

e2bd424207d2dee5d2f9178bde6840bc569ec902
SHA256

60544f9fcda6acd68a5d22f34617fb3c5a36caac3ef7eb3843256397db37c988
SHA512

0dee0b76f3775a02b1594e6b9be1ec391d844cdc25eb76ef78eb246682d34a14a2ed1aad9b055d8234d7131faf1d94a1a62da8cb84043d198d192f4fc39d8cf7
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOmF:z6QFElP6n+gKmddpMOtEvwDpj31imF

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/60-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/4016-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/60-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4016-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/60-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/4016-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/60-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4016-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/60-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/4016-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/60-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4016-27-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4016 asih.exe

pid	process
4016	asih.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/60-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/4016-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/60-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4016-27-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe

description	pid	process	target process
PID 60 wrote to memory of 4016	60	2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe	asih.exe
PID 60 wrote to memory of 4016	60	2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe	asih.exe
PID 60 wrote to memory of 4016	60	2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:60

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:4016

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
52KB

MD5
225f6561d2614300314a83a1eda7ff6e

SHA1
da11111fb9aa54c0d0287ed169e0c7e7185e8642

SHA256
60799953426ed446d12e8bc4046f04524c2b8bcfdabc9ee421c56b19128aeff5

SHA512
367b002c452b6d4151ddfa45550cd03d9257722a29235cd4bec478dd92314b62e930733597c892ba77be3eeb93da8f8b2ab1f6603a5fa63c21bc030d1e37f713

Download Submit
memory/60-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/60-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/60-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/60-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/60-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4016-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4016-20-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4016-26-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4016-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download