4db6fc156283554b32455c09a13d05e6658cfd6efd0533125f969e0d107dad30

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04-02-2024 01:33

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General

Target

2024-02-04_64f15beaa1b5232168e8c393331931f8_cryptolocker.exe
Size

32KB
MD5

64f15beaa1b5232168e8c393331931f8
SHA1

e61b6b71df1b2f46fc0efc9f3e05e6b6a9fdbd20
SHA256

4db6fc156283554b32455c09a13d05e6658cfd6efd0533125f969e0d107dad30
SHA512

63d656006458d8ae96475373b398a2a58bf26da1cec022a916b2d17939c8358e44aa7508bb2dd19b522ed405f087ae605da9f99e3878a0be339db0fea7450e7e
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunexRlz5Ks:bA74zYcgT/Ekd0ryfjPIunYHKs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f5-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-04_64f15beaa1b5232168e8c393331931f8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1840	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 4312 wrote to memory of 1840	4312	2024-02-04_64f15beaa1b5232168e8c393331931f8_cryptolocker.exe	84
PID 4312 wrote to memory of 1840	4312	2024-02-04_64f15beaa1b5232168e8c393331931f8_cryptolocker.exe	84
PID 4312 wrote to memory of 1840	4312	2024-02-04_64f15beaa1b5232168e8c393331931f8_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-04_64f15beaa1b5232168e8c393331931f8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_64f15beaa1b5232168e8c393331931f8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4312
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1840

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
32KB

MD5
e4a50ebe33ca8c621f2268150cc4ba12

SHA1
aeeccd8cae3f6ebf9e06cb1a4b8df00cf5893e2f

SHA256
3edbd51f4796abfd1efc1a9fb2fc024ad6ef95964fce1799e8d315d2e4502850

SHA512
cdeaae8ca33a70ea5041798f21d549c62a5fefc60a963f02df87edbd946cd014929b04c068c26c948dfedd3c07d9dd42b6c5f4acc7866fc779394742c6690d7b

Download Submit
memory/1840-17-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/1840-18-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4312-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4312-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4312-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download