dc99bb1d1f0cc761ae157bbed9bfa173ea2cc37ad5e54b16eb47e732f9af6fec

Analysis

max time kernel
150s
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
21-05-2024 04:55

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General

Target

2024-05-21_65459c9113b98b2b2fadf5ee207a7a90_cryptolocker.exe
Size

49KB
MD5

65459c9113b98b2b2fadf5ee207a7a90
SHA1

5de7e618b8bcb77df15bba7226502daeaca2e864
SHA256

dc99bb1d1f0cc761ae157bbed9bfa173ea2cc37ad5e54b16eb47e732f9af6fec
SHA512

5be813b2c56caa3e982e910393f8f344646a313de1e18569090d4c9a3d893c232d748b337b28c0c6a53af3b938adb4235310926f077c8546f43face6c873b8a3
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6D8jnPx9UnuDLlD+M:bIDOw9a0Dwo3P1ojvUSD4PInyDx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a00000002343c-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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-21_65459c9113b98b2b2fadf5ee207a7a90_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2632	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 3128 wrote to memory of 2632	3128	2024-05-21_65459c9113b98b2b2fadf5ee207a7a90_cryptolocker.exe	83
PID 3128 wrote to memory of 2632	3128	2024-05-21_65459c9113b98b2b2fadf5ee207a7a90_cryptolocker.exe	83
PID 3128 wrote to memory of 2632	3128	2024-05-21_65459c9113b98b2b2fadf5ee207a7a90_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-21_65459c9113b98b2b2fadf5ee207a7a90_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_65459c9113b98b2b2fadf5ee207a7a90_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3128
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:2632

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
49KB

MD5
b86aefb991bab7cfb523f9c881f203f8

SHA1
acd16df3a34a6c655e95b93923d00cdc8b629b69

SHA256
03c3d59c5dbd41795a622ae550df0095e2a8e29c3fdad798228cac47a1c3e82c

SHA512
7b10cb8738c0f5710632e948d1a2b28bf4a4342d322ecfd909cb51bf96b830d1c8055ccae2a5cd84dcbcc7183be4694840f3e4c28f251e07655912a297aa8621

Download Submit
memory/2632-17-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2632-23-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3128-0-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/3128-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3128-8-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download