4d9e2fb53ef4ea4342df748df0dc6dc92391d8d660288da1dd1a54119550b3a6

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
08/05/2024, 01:30

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General

Target

2024-05-08_d9b17930096dec0d3c8836ce178f6a77_cryptolocker.exe
Size

41KB
MD5

d9b17930096dec0d3c8836ce178f6a77
SHA1

7cbbe99e888a3ca7cc9e8f28fd80217d2a3f48ff
SHA256

4d9e2fb53ef4ea4342df748df0dc6dc92391d8d660288da1dd1a54119550b3a6
SHA512

9ebdd936b6f49940848787c4709e486d7e883dc365a5f3249beedb5f4af42feb31d8792e6f0bc94b24c4fba37b71357fc27fa2a37293701937e5d6472e3278bb
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+rc5vVcSX:bgGYcA/53GADw8ClrcTcSX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b85-12.dat	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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-05-08_d9b17930096dec0d3c8836ce178f6a77_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1520	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 3404 wrote to memory of 1520	3404	2024-05-08_d9b17930096dec0d3c8836ce178f6a77_cryptolocker.exe	83
PID 3404 wrote to memory of 1520	3404	2024-05-08_d9b17930096dec0d3c8836ce178f6a77_cryptolocker.exe	83
PID 3404 wrote to memory of 1520	3404	2024-05-08_d9b17930096dec0d3c8836ce178f6a77_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-08_d9b17930096dec0d3c8836ce178f6a77_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-08_d9b17930096dec0d3c8836ce178f6a77_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1520

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
41KB

MD5
e6b3cb6f82433ecc8227c051e196b8a5

SHA1
c91d2157a0f508192c84fb2f111443f2dbb3b0fd

SHA256
09c37e176cbf2bdd2317e49291506a12056352c6e1dae0237957474d3a770c92

SHA512
d2228dfbf09379dab32539832b93a5e67500fa7adb258f653e842cd0c672734e6dcd98d87ce4313e74e926d379ba3e7959fc1f7b2beee1b8f8f369d7b6cec7de

Download Submit
memory/1520-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1520-23-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3404-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3404-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3404-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download