087bcb6b485d533d7cdcf9bb268b8acf275c2599b2d9445a5c3894ac03135294

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 14:54

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General

Target

2024-02-23_3de090f017f11124bf61bc8fa5a01dc8_cryptolocker.exe
Size

72KB
MD5

3de090f017f11124bf61bc8fa5a01dc8
SHA1

d7cf0a4973a8f636aff1c06007ed954f014bc559
SHA256

087bcb6b485d533d7cdcf9bb268b8acf275c2599b2d9445a5c3894ac03135294
SHA512

06017ca8ea4a45d96add8de6d16225fb4fc92a8a6ec5d2db0109c08c9b3eee95f112b0da6ccc72c360b111f48aadc7742743bbc760c5afd769c4b8b7fec91a30
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1eSi:X6a+SOtEvwDpjBZYvQd2M

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001e597-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001e597-12.dat	CryptoLocker_set1

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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	2024-02-23_3de090f017f11124bf61bc8fa5a01dc8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1452	asih.exe

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 3660 wrote to memory of 1452	3660	2024-02-23_3de090f017f11124bf61bc8fa5a01dc8_cryptolocker.exe	89
PID 3660 wrote to memory of 1452	3660	2024-02-23_3de090f017f11124bf61bc8fa5a01dc8_cryptolocker.exe	89
PID 3660 wrote to memory of 1452	3660	2024-02-23_3de090f017f11124bf61bc8fa5a01dc8_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-23_3de090f017f11124bf61bc8fa5a01dc8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_3de090f017f11124bf61bc8fa5a01dc8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3660
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1452

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
72KB

MD5
04731b92a045aa4e29d4bbea8b8adb7c

SHA1
3eb1552147734afa1021432707d45292a34eb40e

SHA256
3ef8bdee934dcd83fc83b1126ddae261bff5dd38a533ef6d95904110a8a9f615

SHA512
8b6f5980f02fab14680a70903e57c159000716d7e21ac5b8c2725343834906ccd0372bcb3f486502a74cdb2f5345d9ea55cd6964b42edef23258ce764b0dda27

Download Submit
memory/1452-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1452-19-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/3660-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3660-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3660-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download