1dd9f2fd639f765b45135d1961ba456cc8fa411b5f94a70aa3a7fe831bbe47b2

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
02/06/2024, 05:27

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General

Target

2024-06-02_dfe23a6f2c997e0b2ca7bf9762ecf3a9_cryptolocker.exe
Size

77KB
MD5

dfe23a6f2c997e0b2ca7bf9762ecf3a9
SHA1

af706c987bd78b7de7a2e8cf45740f314588a22e
SHA256

1dd9f2fd639f765b45135d1961ba456cc8fa411b5f94a70aa3a7fe831bbe47b2
SHA512

2828184634096f4ddab23b17594b6d723168f416c0c27a8ac659579800a5aaca62f72b1e3e5b048fa7f591fd27ac85b644924a1ad7c79c1e8f19ba6d7bcd41a4
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1siMOJi:X6a+SOtEvwDpjBZYvQd2y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023403-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023403-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-06-02_dfe23a6f2c997e0b2ca7bf9762ecf3a9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1244	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 1748 wrote to memory of 1244	1748	2024-06-02_dfe23a6f2c997e0b2ca7bf9762ecf3a9_cryptolocker.exe	83
PID 1748 wrote to memory of 1244	1748	2024-06-02_dfe23a6f2c997e0b2ca7bf9762ecf3a9_cryptolocker.exe	83
PID 1748 wrote to memory of 1244	1748	2024-06-02_dfe23a6f2c997e0b2ca7bf9762ecf3a9_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-02_dfe23a6f2c997e0b2ca7bf9762ecf3a9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-02_dfe23a6f2c997e0b2ca7bf9762ecf3a9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1748
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1244

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
77KB

MD5
eb11c9a1d921920d6395215b4fc74e39

SHA1
014df2c7816940c1adbbe1802f68d12ac598fe0c

SHA256
c136fcc5358f2b9ec672dbc34bd320cdcdc7772fdc5f381ad342015109c0aee5

SHA512
a3ebc3f5089767fc322368de819c9940ca657676421a98abe928c18d9095d9eaa608b54a6f178f9ddcc124fa233b39ea39ee6c8313e75f47b8c7459bf0607e72

Download Submit
memory/1244-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/1244-23-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1748-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1748-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1748-2-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download