d6012e21ea301dc75468db5190f252cc532142dd0ef476dabeeb9c06f346bcad

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 18:24

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General

Target

2024-05-10_4085de1b970e5a3c24b005350df9b12f_cryptolocker.exe
Size

43KB
MD5

4085de1b970e5a3c24b005350df9b12f
SHA1

ab8666be41851c3646e1425bf04bc57f7ab87852
SHA256

d6012e21ea301dc75468db5190f252cc532142dd0ef476dabeeb9c06f346bcad
SHA512

5bffe28303dc2c84784d56554f439f8907be3d01a458be1690ac6663c96045459a8920e029fd518961c7d1bcc0dc4fcab8c0a0fae3e61d1e11ed1ecbf89ff739
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUado:bm74zYcgT/EkM0ryfjPdo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1564-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000022f51-13.dat	CryptoLocker_rule2
behavioral2/memory/3876-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1564-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3876-27-0x0000000008000000-0x000000000800D000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-10_4085de1b970e5a3c24b005350df9b12f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3876	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 1564 wrote to memory of 3876	1564	2024-05-10_4085de1b970e5a3c24b005350df9b12f_cryptolocker.exe	83
PID 1564 wrote to memory of 3876	1564	2024-05-10_4085de1b970e5a3c24b005350df9b12f_cryptolocker.exe	83
PID 1564 wrote to memory of 3876	1564	2024-05-10_4085de1b970e5a3c24b005350df9b12f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-10_4085de1b970e5a3c24b005350df9b12f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_4085de1b970e5a3c24b005350df9b12f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3876

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
43KB

MD5
13108f656021931a456a470c5e822830

SHA1
bd99b6281d8355e3d4bad85573b41de3b937ccc3

SHA256
2e11262ab2f516cfcf4552a74d56a908a9b03000ecaf0b8a55b60581709be7f1

SHA512
6e17bfd89ad68c24ceb4d108fd840da1273f91ff709318a4a259ff26ddeaff4b67b9f69371cc405cfdcd645e9a1cfb0b0cb1e99d8c98a510c2db02034a9e2f97

Download Submit
memory/1564-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1564-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1564-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1564-9-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1564-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3876-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3876-26-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3876-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download