9b7bdd2d91da534a407cd19b59acd2bd20592a696fa3ced3da8bab7ff028889b

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/05/2024, 03:50

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General

Target

2024-05-30_5efb240a51724054faac5cc571e5e15d_cryptolocker.exe
Size

45KB
MD5

5efb240a51724054faac5cc571e5e15d
SHA1

d14c9d834e6816810f22fb9f43618cf7b4562288
SHA256

9b7bdd2d91da534a407cd19b59acd2bd20592a696fa3ced3da8bab7ff028889b
SHA512

b4742a155d934eb56b6fc2ce32eae7f18507e4490ed5439fe7f5ce8c73d8d2a9144365979ec355121ea690951fabb3271a7309a76bf1344d45e39c78915b1af4
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD9H7ZD:X6QFElP6n+gJQMOtEvwDpjBmzDkWDt7N

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002328d-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000500000002328d-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-30_5efb240a51724054faac5cc571e5e15d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4080	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 4580 wrote to memory of 4080	4580	2024-05-30_5efb240a51724054faac5cc571e5e15d_cryptolocker.exe	82
PID 4580 wrote to memory of 4080	4580	2024-05-30_5efb240a51724054faac5cc571e5e15d_cryptolocker.exe	82
PID 4580 wrote to memory of 4080	4580	2024-05-30_5efb240a51724054faac5cc571e5e15d_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-30_5efb240a51724054faac5cc571e5e15d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_5efb240a51724054faac5cc571e5e15d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4580
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4080

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
45KB

MD5
993458d6c43b2f9b6ea91202f070226f

SHA1
46b9d727134d135fcfa2079a10362df9882b9e72

SHA256
1b1bb9123f6c9a348c2bdf9a946072e18fec9e4dabd0e13fa3a62b01b8c10286

SHA512
19bc11c0a325a8f0bcfbb2424742c879c4815d446b561e4265bae5643651f3841fc66e241c7c16a487c9034008b6a388aac352d327fe109f0d222f2dd94b0549

Download Submit
memory/4080-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4080-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4580-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4580-1-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4580-8-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download