ef9bf21d17a5e02e676bdc7ff6f2ce5d4c062f483278a7443241f11d88181bf8

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2024 01:33

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-28_a4d2100864bb3a74e9c97ef9d78ee285_cryptolocker.exe
Size

50KB
MD5

a4d2100864bb3a74e9c97ef9d78ee285
SHA1

94285c2dc18b762ac731c1e537f7d94010c199aa
SHA256

ef9bf21d17a5e02e676bdc7ff6f2ce5d4c062f483278a7443241f11d88181bf8
SHA512

6fba8800cb2ff843d9f1ad28443ebc1bc292e68b17ef45ecc1ffc4ea2ae6987224f15cf3079bc86e2857b85291f8e43596bff27186b290d91e215a2e45e0fdf5
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CSO4:bgGYcA/53GAA6y37Q6dI+d5D

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023191-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-28_a4d2100864bb3a74e9c97ef9d78ee285_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5056	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 1748 wrote to memory of 5056	1748	2024-03-28_a4d2100864bb3a74e9c97ef9d78ee285_cryptolocker.exe	87
PID 1748 wrote to memory of 5056	1748	2024-03-28_a4d2100864bb3a74e9c97ef9d78ee285_cryptolocker.exe	87
PID 1748 wrote to memory of 5056	1748	2024-03-28_a4d2100864bb3a74e9c97ef9d78ee285_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-28_a4d2100864bb3a74e9c97ef9d78ee285_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_a4d2100864bb3a74e9c97ef9d78ee285_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1748
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:5056

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe

Filesize
50KB

MD5
00c099c50c211648536b72d7376f9f38

SHA1
90316f86607287b99bb0aa628a61149740204062

SHA256
f54b5ca4b940a1f94da05a90eb6ad1839be68d1434e4a0cc8ba7efd2e1d3a542

SHA512
3c1112a057be90bf7eb21f49829cd2c81891b894c6c7e49ae2ec5129c075a006a599e7a58326d07bb224cbb375d3c8294c9cebc30651c7debdc7ae5a18ffda67

Download Submit
memory/1748-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1748-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/1748-2-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/5056-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/5056-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download