1ed0daa3ec69ad67528effb1421b8c597f9d9c3a05f2c3b034fd3e1be83c1bb3

Analysis

max time kernel
94s
max time network
124s
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 20:35

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General

Target

2024-05-22_6bfb39271debb10f979dcd5c51cfb23e_cryptolocker.exe
Size

65KB
MD5

6bfb39271debb10f979dcd5c51cfb23e
SHA1

eb9dd3ca2160ae53b3f0824a68e2be348845e1ca
SHA256

1ed0daa3ec69ad67528effb1421b8c597f9d9c3a05f2c3b034fd3e1be83c1bb3
SHA512

55ba8de49571bdbe49b06be84a6bcd5e9863832c39bb9adeb4fea1917fd34ce20b25f288830e6b7e857337b6cf20683203a7576b1ca37a39c4d201c8fdc64598
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293Ci5:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7r

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hurok.exe	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-22_6bfb39271debb10f979dcd5c51cfb23e_cryptolocker.exehurok.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-22_6bfb39271debb10f979dcd5c51cfb23e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	hurok.exe

Executes dropped EXE 1 IoCs

Processes:

hurok.exe

pid process

5108 hurok.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5108	hurok.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_6bfb39271debb10f979dcd5c51cfb23e_cryptolocker.exe

description	pid	process	target process
PID 2580 wrote to memory of 5108	2580	2024-05-22_6bfb39271debb10f979dcd5c51cfb23e_cryptolocker.exe	hurok.exe
PID 2580 wrote to memory of 5108	2580	2024-05-22_6bfb39271debb10f979dcd5c51cfb23e_cryptolocker.exe	hurok.exe
PID 2580 wrote to memory of 5108	2580	2024-05-22_6bfb39271debb10f979dcd5c51cfb23e_cryptolocker.exe	hurok.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_6bfb39271debb10f979dcd5c51cfb23e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_6bfb39271debb10f979dcd5c51cfb23e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2580

C:\Users\Admin\AppData\Local\Temp\hurok.exe
"C:\Users\Admin\AppData\Local\Temp\hurok.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:5108

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\hurok.exe
Filesize
65KB

MD5
e3b6dd7a11e8aa5003166c24f7a8c790

SHA1
18860d0718c8e6aba3454e4c2b7228c8b43530a8

SHA256
239b2f4f60dd415be9380b08210b42ff89a60d0d17ff9eaf2eed6740d890f685

SHA512
6b75a17c57bc738bc253c136951b0d3f32bf55558889f1888de6834bffa1191a62ae8802cbd3540259379b729e8e4175f047d95f08d8213bff51696b1cbbd765

Download Submit
memory/2580-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2580-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2580-8-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/5108-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download