bdd96341259bf8113f27e4329e23d1c599af6b7570b417634cfb3b974122a788

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 15:44

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General

Target

2024-05-21_a766c381a44911071b3c2161a9e6b8e2_cryptolocker.exe
Size

38KB
MD5

a766c381a44911071b3c2161a9e6b8e2
SHA1

f64db107c2f9ed6633ba3709d4305514399a4872
SHA256

bdd96341259bf8113f27e4329e23d1c599af6b7570b417634cfb3b974122a788
SHA512

c7095cfbe9d11a817a9dc49bb12f28f7ea865123b800e14f46a420b7cea615bc6a3ddb4eafdab7b33653863ee35efafdcc227ebde78c9e8e28d8e875dc1aecae
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVajSKm5uhy7O4qqgt:X6QFElP6n+gJQMOtEvwDpjBcSKm5uhwO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

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

Processes:

2024-05-21_a766c381a44911071b3c2161a9e6b8e2_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-21_a766c381a44911071b3c2161a9e6b8e2_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1892 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1892	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_a766c381a44911071b3c2161a9e6b8e2_cryptolocker.exe

description	pid	process	target process
PID 2456 wrote to memory of 1892	2456	2024-05-21_a766c381a44911071b3c2161a9e6b8e2_cryptolocker.exe	asih.exe
PID 2456 wrote to memory of 1892	2456	2024-05-21_a766c381a44911071b3c2161a9e6b8e2_cryptolocker.exe	asih.exe
PID 2456 wrote to memory of 1892	2456	2024-05-21_a766c381a44911071b3c2161a9e6b8e2_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_a766c381a44911071b3c2161a9e6b8e2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_a766c381a44911071b3c2161a9e6b8e2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1892

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
38KB

MD5
1316da4fcc0a55e79e0de4373479354b

SHA1
2f53a72948303d95f93aa17b6b1d880b8f6119bc

SHA256
095f6445c4dadd9e631dd21e5ab8d6fb998a1f27fd85eafe867c266dc0ccbfeb

SHA512
d2cb2ca398e7a1b85265dcd80e73b4223b0b2197cf1d0f2de15ee6c093d0e2e36c643786d1e662dbf4b19a6d3692f4ef4d7ed3e4a2c21e314524ff08160af836

Download Submit
memory/1892-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1892-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2456-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2456-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2456-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download