245516150ccf17870d511285c05213bf01eb73aa7ece4a887f6df63f02cf645f

Analysis

max time kernel
143s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 15:19

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General

Target

2024-02-20_e6ac14190d58a6071b5641b87648187a_cryptolocker.exe
Size

49KB
MD5

e6ac14190d58a6071b5641b87648187a
SHA1

00c5d53c93b3bdb8a2aca6db8cbe85cdc72c9c12
SHA256

245516150ccf17870d511285c05213bf01eb73aa7ece4a887f6df63f02cf645f
SHA512

5f10e17ff57fa34b19cc23cba2c34ff73f39da2ee84e7c374cbc23969446d4ae87998911c18745c93ec1ba6eb67a3f4529696beb35542e529d48cb0fde6d8559
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcaT4:X6QFElP6n+gJBMOtEvwDpjBtExmlk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320a-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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-02-20_e6ac14190d58a6071b5641b87648187a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4948	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 4676 wrote to memory of 4948	4676	2024-02-20_e6ac14190d58a6071b5641b87648187a_cryptolocker.exe	83
PID 4676 wrote to memory of 4948	4676	2024-02-20_e6ac14190d58a6071b5641b87648187a_cryptolocker.exe	83
PID 4676 wrote to memory of 4948	4676	2024-02-20_e6ac14190d58a6071b5641b87648187a_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-20_e6ac14190d58a6071b5641b87648187a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_e6ac14190d58a6071b5641b87648187a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4676
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4948

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
50KB

MD5
71e5a45a0951f36fba01542d026a6e60

SHA1
e07cc63061bf6959cb7e67377e8a81cd95f891b0

SHA256
6e324a83fbac95f93deaf3e0f45577ded5042db6b75181a027ca45705f928c9d

SHA512
ebc6ffaf04979c0143521a6dc01cc035ae490d6f3d1fd72d0e2559da13abca78536baa3c8b4d008cf72ec2c7b0e5e1a7cc6961f3a7862f13534b3c7fb6034796

Download Submit
memory/4676-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4676-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4676-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4948-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4948-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download