4b5b3c310b1a7ab788699a8761d01f40c5720cb32b7ddb005724767d6cedf4b2

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2024 20:29

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General

Target

2024-02-19_3bbabf942d024ceafb7e928294aaedb1_cryptolocker.exe
Size

31KB
MD5

3bbabf942d024ceafb7e928294aaedb1
SHA1

eab91e4461a95b4e23259118902204da045f11bf
SHA256

4b5b3c310b1a7ab788699a8761d01f40c5720cb32b7ddb005724767d6cedf4b2
SHA512

a7be4d3775b6100be9986362ed5c1ea9e44f7d287270741491583f0f2c2ab1d99e9d2c01b16dc66e79324b962ea5ce1b493db28566ee91a1eacd04d294b0f5fa
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUr766SJ/Tl+bltoGAz3:bA74zYcgT/Ekd0ryfjQRSlwltcz3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320b-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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-02-19_3bbabf942d024ceafb7e928294aaedb1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3984	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 4076 wrote to memory of 3984	4076	2024-02-19_3bbabf942d024ceafb7e928294aaedb1_cryptolocker.exe	84
PID 4076 wrote to memory of 3984	4076	2024-02-19_3bbabf942d024ceafb7e928294aaedb1_cryptolocker.exe	84
PID 4076 wrote to memory of 3984	4076	2024-02-19_3bbabf942d024ceafb7e928294aaedb1_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_3bbabf942d024ceafb7e928294aaedb1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_3bbabf942d024ceafb7e928294aaedb1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3984

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
31KB

MD5
0d89f111525dbb513c0af1189129ae78

SHA1
591f90af2cddc71672519267099d906dd933bfb4

SHA256
c5c3249d6dd56c82cdb9aa1c1da28218f8607791a45185d3ebc5239e5b88b2f8

SHA512
8e4ffc3ebb256c8cb32913c7b8b85fd76a0eabfa7b2da7623e7ee44306b367ea4f39da4d203a288fa7df59619faed1312679dcdac7324148dc9f74b1f41cc681

Download Submit
memory/3984-17-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/3984-18-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4076-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4076-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4076-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download