e3b1959c1e027c0662d61c6d6646b782884e800118385ce163d00f1a8b7e14f5

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 06:13

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General

Target

2024-02-20_e37169d3cbd0d656cb85fcd4e2a98b4d_cryptolocker.exe
Size

71KB
MD5

e37169d3cbd0d656cb85fcd4e2a98b4d
SHA1

474b5997ce15ce7eb7ca969247fa870a9eeb5978
SHA256

e3b1959c1e027c0662d61c6d6646b782884e800118385ce163d00f1a8b7e14f5
SHA512

68873b8dcb0158bc236d3b6754513bc63c1d86afe9c99955bb449fcf161c16116c6029467e946f3de62507c495b40d6bcd6b8f453b628fe99c131aaa45a990d0
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHb:X6a+SOtEvwDpjBZYvQd2P

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023207-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023207-12.dat	CryptoLocker_set1

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	2024-02-20_e37169d3cbd0d656cb85fcd4e2a98b4d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4196	asih.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 4820 wrote to memory of 4196	4820	2024-02-20_e37169d3cbd0d656cb85fcd4e2a98b4d_cryptolocker.exe	83
PID 4820 wrote to memory of 4196	4820	2024-02-20_e37169d3cbd0d656cb85fcd4e2a98b4d_cryptolocker.exe	83
PID 4820 wrote to memory of 4196	4820	2024-02-20_e37169d3cbd0d656cb85fcd4e2a98b4d_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-20_e37169d3cbd0d656cb85fcd4e2a98b4d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_e37169d3cbd0d656cb85fcd4e2a98b4d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4196

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\asih.exe

Filesize
72KB

MD5
f740a506e7d8963a0c5cd1eb2b787b40

SHA1
82826edabf3f98d38ef9152c60ced01f138fcfdd

SHA256
9c055b92d6e849cf3871d751f2e9071ba1b7701aae0ddb975caedf58bc168e11

SHA512
0dc10cbf148f69dc26b04c4e90dc7629b15ac60a360d523e3a5c0c019a0756dfc0520ec416a7ab6a1d25a09a9932b7e68d1f2607c4780b28194c1e3d16403c62

Download Submit
memory/4196-17-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/4196-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4820-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4820-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4820-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download