788f17bb89c795a49b6247f8b5ece55226ae4a4a30aefd79784019a17a7dc391

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 21:25

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General

Target

2024-06-01_349ea76df8e81f1464a09fa349654c06_cryptolocker.exe
Size

44KB
MD5

349ea76df8e81f1464a09fa349654c06
SHA1

12169f9c7e1d944834a84f5140815dca7cefa705
SHA256

788f17bb89c795a49b6247f8b5ece55226ae4a4a30aefd79784019a17a7dc391
SHA512

10c16d5c6b062e379819651f4fb4469af50b064a72185eed888d7b7530a71ed36c985e5f8f2b8fe29ec29f5d7f70a5a1b49e96d9b964f403d1a78bfd383da2fa
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIIn:bm74zYcgT/Ekn0ryfjUn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/868-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00090000000233f9-13.dat	CryptoLocker_rule2
behavioral2/memory/868-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2960-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2960-27-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

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	2024-06-01_349ea76df8e81f1464a09fa349654c06_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2960	hasfj.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 868 wrote to memory of 2960	868	2024-06-01_349ea76df8e81f1464a09fa349654c06_cryptolocker.exe	83
PID 868 wrote to memory of 2960	868	2024-06-01_349ea76df8e81f1464a09fa349654c06_cryptolocker.exe	83
PID 868 wrote to memory of 2960	868	2024-06-01_349ea76df8e81f1464a09fa349654c06_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-01_349ea76df8e81f1464a09fa349654c06_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_349ea76df8e81f1464a09fa349654c06_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:868
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2960

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\hasfj.exe

Filesize
44KB

MD5
fdf16edfd9b31e34b37d71be54cc9986

SHA1
2381debcaca5c17f589b2829fbb4e14c29af74d9

SHA256
c832f0fd2c2fb368e9bc202e674839b8a5933eba900763ce839515f78d4514df

SHA512
dbb226e2c1352e3b970d078b6c7a32c3be964a10f0d0ea6e4cd0b0131f713eceb7bd977bfef23df5b7d45d581f015711b069f7eeee01e9c459d08e8ad4cb7563

Download Submit
memory/868-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/868-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/868-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/868-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/868-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2960-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2960-26-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/2960-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download