064517de7f0c63fe7cb83a0d8d8cd57143fc33c2a79f5268ce3506d49686999c

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23-04-2024 18:22

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General

Target

2024-04-23_21c1a0290426001c63a21ce0e06a56c5_cryptolocker.exe
Size

40KB
MD5

21c1a0290426001c63a21ce0e06a56c5
SHA1

912f23abf708e53a1876e2a09b8ebba2348bd039
SHA256

064517de7f0c63fe7cb83a0d8d8cd57143fc33c2a79f5268ce3506d49686999c
SHA512

1a5d98a552702f5d3c0496be236d90c0dae4d8a96d590ed6500ec47dac9c398aa4aacc742b8af20f990d241caeb3893bf504301f3004c088de58721258bbd967
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5axRVZo4:V6QFElP6n+gMQMOtEvwDpjyaYaL/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-23_21c1a0290426001c63a21ce0e06a56c5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4668	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 4608 wrote to memory of 4668	4608	2024-04-23_21c1a0290426001c63a21ce0e06a56c5_cryptolocker.exe	87
PID 4608 wrote to memory of 4668	4608	2024-04-23_21c1a0290426001c63a21ce0e06a56c5_cryptolocker.exe	87
PID 4608 wrote to memory of 4668	4608	2024-04-23_21c1a0290426001c63a21ce0e06a56c5_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-23_21c1a0290426001c63a21ce0e06a56c5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_21c1a0290426001c63a21ce0e06a56c5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4608
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4668

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
40KB

MD5
5428a51bce488237843cd5ead25d2db8

SHA1
b8efafa08fae5fa6485fd4a3ca9ddfc587d30d4b

SHA256
ccb8b9304ab9c51fc8bedebd5d14f3a40ae2f3bfa905e0e5dab555e410ac6ef2

SHA512
00402022a3ce8e6a2654b2d7d11f1d2ad6d937734bc80829998899ab1c20eefec450605aa2df32d2c4a0110a9e8705d5ce02eebe85dbedfa76bb096301cd3521

Download Submit
memory/4608-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4608-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4608-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/4668-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4668-20-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download