51f126d08fc2479dd09583e4cec8cd3ec1c2ec2552623cbe7e3b18dcc69276f5

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/02/2024, 04:42

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General

Target

2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe
Size

40KB
MD5

38155ce3138dee13a79b87ddded60134
SHA1

c4c21fe841b9ff79c7f6cae17c00ac19f556c6a0
SHA256

51f126d08fc2479dd09583e4cec8cd3ec1c2ec2552623cbe7e3b18dcc69276f5
SHA512

e2ce3290caafdc52334e158a46565d0eb76f2036447a2eb72e1a04bd806b2a295accefbff004fb8ec5d7696c155e4a4e8b6038a315903256e8d33c8b91b082d9
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6DySWW:bIDOw9a0Dwo3P1ojvUSDX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023131-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2448	lossy.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 376 wrote to memory of 2448	376	2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe	89
PID 376 wrote to memory of 2448	376	2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe	89
PID 376 wrote to memory of 2448	376	2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_38155ce3138dee13a79b87ddded60134_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:376
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2448

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\lossy.exe

Filesize
40KB

MD5
1b3668ae9bee62bcfc7f8d46b53bdc24

SHA1
d92517aa4b697cd6c8146dde7c656073a2fecb18

SHA256
93e71d64123cdd086a3318d6cee749fa134ca105fb9305f48968444f2747abb1

SHA512
6cf706817f3e97b2955e60fa6560a5e86bd9eb0b23b6d81243ad1eddcaa65a53b0bc818250eb677b43403a3ed2329cf390b06dadcaf3749a69d9e4472717e619

Download Submit
memory/376-0-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/376-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/376-2-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/2448-17-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2448-19-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download