8b03ad910401215f284ee2ca62d5963c3665a2b741c17d9212c311d9d3306e0a

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 17:56

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General

Target

2024-02-13_7c245b76876b7b8890e54f12486ff00d_cryptolocker.exe
Size

36KB
MD5

7c245b76876b7b8890e54f12486ff00d
SHA1

b10c66710cb009dfaa85c5cdaba115d42fd8c337
SHA256

8b03ad910401215f284ee2ca62d5963c3665a2b741c17d9212c311d9d3306e0a
SHA512

cd602552446bf74e7598b108c4eaee626c6b894ceff73b2e40302b8d4b102ec6cb782b79071485f0bb62e020f98059ed5042054df83fd2544ca6ab148b4e1c85
SSDEEP

384:bgX4uGLLQRcsdeQ7/nQu63Ag7YmecFanrlwfjDUkKDfWf0w3sp8u5cZr/0B:bgX4zYcgTEu6QOaryfjqDDw3sCu5q/m

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f9-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-13_7c245b76876b7b8890e54f12486ff00d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2948	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 3124 wrote to memory of 2948	3124	2024-02-13_7c245b76876b7b8890e54f12486ff00d_cryptolocker.exe	83
PID 3124 wrote to memory of 2948	3124	2024-02-13_7c245b76876b7b8890e54f12486ff00d_cryptolocker.exe	83
PID 3124 wrote to memory of 2948	3124	2024-02-13_7c245b76876b7b8890e54f12486ff00d_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-13_7c245b76876b7b8890e54f12486ff00d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_7c245b76876b7b8890e54f12486ff00d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3124
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2948

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
37KB

MD5
39b0e0064d0f139d22a6b886453dfec6

SHA1
8c947e0ec8b85861368a8ae287e1633ab55241f5

SHA256
f34c1b803ee2764679dc4134b349bd14c2d2b669b6b4b05afe3563bddacc0aed

SHA512
30ab9d92be3dd55c9af17f3d8a2f6b1525751155f86156c202b6bab0fc5b94f92539dd37defe1b16fc2d30260cb0feaa4739848f7ae805761b6c77bc3845df6c

Download Submit
memory/2948-17-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/2948-19-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/3124-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3124-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3124-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download