9fbe475255a4b31d4845b52155cfe7599f2153bd152150a32cc8b97b9de6abc9

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 06:10

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General

Target

2024-02-13_c861b516460a29422de670716c304fb9_cryptolocker.exe
Size

93KB
MD5

c861b516460a29422de670716c304fb9
SHA1

be9d59f396888dd2a3c56a3eae28ff27a7d0b9dd
SHA256

9fbe475255a4b31d4845b52155cfe7599f2153bd152150a32cc8b97b9de6abc9
SHA512

e2966d5835ff4c1438a9cabfce96e8b828e2fb631a44dce9685ee1ee6459799e6bb86e3f65df8645a87f06aeb9c96d7a026ae3b0533155861c22efeb3f50b3b2
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNC+:26a+2OtEvwDpjtzR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023147-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023147-12.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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-13_c861b516460a29422de670716c304fb9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4504	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 1788 wrote to memory of 4504	1788	2024-02-13_c861b516460a29422de670716c304fb9_cryptolocker.exe	85
PID 1788 wrote to memory of 4504	1788	2024-02-13_c861b516460a29422de670716c304fb9_cryptolocker.exe	85
PID 1788 wrote to memory of 4504	1788	2024-02-13_c861b516460a29422de670716c304fb9_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-13_c861b516460a29422de670716c304fb9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_c861b516460a29422de670716c304fb9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1788
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4504

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
93KB

MD5
6b366e408fb6f73f296548fabebb9ac9

SHA1
fd0a9b1e0305d7faf0ae7c41829cb854b391744e

SHA256
31210e5c13ba9e084e5e01607030d37e0229005855eb8b5be51bbd87e1a2e510

SHA512
ce7efff5057656bb1b03389ed89254a92775043eac459fb4a2dfe2653b4f553bbee9f5d38e24a61f762ab55a28c82ad955f45c8951d53222122ea41881f32915

Download Submit
memory/1788-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1788-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1788-2-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4504-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4504-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download