2d82653919039a3bf1fb85fad67f972f0da3ba644073c83089f2e96ae8b700a5

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
11-02-2024 17:42

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General

Target

2024-02-11_ef785136599d5cced95557430c3657f7_cryptolocker.exe
Size

46KB
MD5

ef785136599d5cced95557430c3657f7
SHA1

b1c9891ac81ab43de352400edd1fc6cde0b990d0
SHA256

2d82653919039a3bf1fb85fad67f972f0da3ba644073c83089f2e96ae8b700a5
SHA512

bd2ba1196b8bb8ac671619f89c37b5c7f06bf55e514866f5ff7baf27e072f65ac4ed726189b6de848545c01ebd4177d5c7ac381c2ced52a4adc1f40c2fc68ff9
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbDu5z/hvVK:bgGYcA/53GAA6y37nb0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000231f7-12.dat	CryptoLocker_rule2

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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-11_ef785136599d5cced95557430c3657f7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4604	hasfj.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 3352 wrote to memory of 4604	3352	2024-02-11_ef785136599d5cced95557430c3657f7_cryptolocker.exe	85
PID 3352 wrote to memory of 4604	3352	2024-02-11_ef785136599d5cced95557430c3657f7_cryptolocker.exe	85
PID 3352 wrote to memory of 4604	3352	2024-02-11_ef785136599d5cced95557430c3657f7_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-11_ef785136599d5cced95557430c3657f7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-11_ef785136599d5cced95557430c3657f7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3352
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:4604

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\hasfj.exe

Filesize
46KB

MD5
716c810efaf92be31ecd53e28e09bee9

SHA1
cb1973dddfae8b48ca17c7b967907f38506b8356

SHA256
f6924253b48e8885482663d9b5352f8e7f4bf3eafcfe6f993fda88086f8c8b5a

SHA512
7f96d9cfb737f28b211f8ac94a150b8db5768373ee036b32f5d38a6da1e790cbd5629465ab5d326815cf574dcdebd0ba29ba9d320378fef017c896152bff69b8

Download Submit
memory/3352-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3352-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/3352-2-0x0000000002500000-0x0000000002506000-memory.dmp

Filesize
24KB

Download
memory/4604-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4604-18-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download