76887f812a06d66c103943b730ebc16d39f672071a1ecfaa573a01bdffef1935

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27/04/2024, 18:36

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General

Target

2024-04-27_9ffa57fbb694f5a349108b914fa1dd31_cryptolocker.exe
Size

85KB
MD5

9ffa57fbb694f5a349108b914fa1dd31
SHA1

a8934880729f30d774e4f0dbd22f1a12c69310f2
SHA256

76887f812a06d66c103943b730ebc16d39f672071a1ecfaa573a01bdffef1935
SHA512

4f9388477d4f043d17b6669962106351dd8ce8f9a26ec8e1d5f2d6fabdeb7df015d4a737a010cc5c6803d95e6b0dba3ea3179020d3de9bc217c30bc6f770fb43
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNl6aE:V6a+pOtEvwDpjvpw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b24-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b24-12.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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-04-27_9ffa57fbb694f5a349108b914fa1dd31_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2696	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 1348 wrote to memory of 2696	1348	2024-04-27_9ffa57fbb694f5a349108b914fa1dd31_cryptolocker.exe	83
PID 1348 wrote to memory of 2696	1348	2024-04-27_9ffa57fbb694f5a349108b914fa1dd31_cryptolocker.exe	83
PID 1348 wrote to memory of 2696	1348	2024-04-27_9ffa57fbb694f5a349108b914fa1dd31_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-27_9ffa57fbb694f5a349108b914fa1dd31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_9ffa57fbb694f5a349108b914fa1dd31_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1348
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2696

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
85KB

MD5
10774d591b13fcec35d50f796e690369

SHA1
36fa7ab428242d7c3c8d2f38acf1c6fb240a7bb3

SHA256
e970a821730fda84d0baa81b193df390ca48524d84ff64198028b955bd3ef7f2

SHA512
7d1902aa5fbc7ac48e2006ae8ab490b415bbe0fd7937bb6cf37dd7941668d6f074bf6d80f76b553aff79042143af7a35b7fcc46e46f8ed33c1e3b0878379ff19

Download Submit
memory/1348-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1348-8-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1348-1-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/2696-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2696-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download