818fffbd3042fe19d7094e41bd3f24bf583226dea13a122eb96c3aea16b80c4d

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
24-01-2024 04:54

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General

Target

2024-01-24_fe0abbc522ec07ddb7f9524ecb5c6405_cryptolocker.exe
Size

71KB
MD5

fe0abbc522ec07ddb7f9524ecb5c6405
SHA1

b5a67ec7415dbee8b8b03cfb9e18ea8c14746bc4
SHA256

818fffbd3042fe19d7094e41bd3f24bf583226dea13a122eb96c3aea16b80c4d
SHA512

476be20fded8f6aa42d0119016585b6325421b1b15bf7c15d7aa8a86851f18c2ab09b03876c07b61de7f903bd3feb3d8706caf34ddab7470932964ca5b1d1961
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1bk:X6a+SOtEvwDpjBZYvQd2Y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023145-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023145-12.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-01-24_fe0abbc522ec07ddb7f9524ecb5c6405_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3540	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 2304 wrote to memory of 3540	2304	2024-01-24_fe0abbc522ec07ddb7f9524ecb5c6405_cryptolocker.exe	87
PID 2304 wrote to memory of 3540	2304	2024-01-24_fe0abbc522ec07ddb7f9524ecb5c6405_cryptolocker.exe	87
PID 2304 wrote to memory of 3540	2304	2024-01-24_fe0abbc522ec07ddb7f9524ecb5c6405_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-24_fe0abbc522ec07ddb7f9524ecb5c6405_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_fe0abbc522ec07ddb7f9524ecb5c6405_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3540

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
71KB

MD5
d668419833c92a07d5a0001b1f2d96d5

SHA1
ed6c75156b07a74c44fce573faf60fa3b0d8dad3

SHA256
ea9c5f6e0e1360bbab2d1716771eaca033e30955b21ff189a9741b352e01b105

SHA512
608dc0425d7b04bb782f1579b612337a57f147815b6f2ca039f7183a3fb28059cab2f86ad6a65d72115081f76c6400656ea8282c8a52e9dce4c15ca974bfbd60

Download Submit
memory/2304-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2304-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2304-2-0x0000000000790000-0x0000000000796000-memory.dmp

Filesize
24KB

Download
memory/3540-17-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/3540-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download