bdb5bae9af8e50f6f9961c44ec809abcdeb7321474be4a29dd7cc382ccb0a665

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 04:37

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General

Target

2024-02-24_45c9b79117356c766e6508df36547f13_cryptolocker.exe
Size

40KB
MD5

45c9b79117356c766e6508df36547f13
SHA1

746a50fba6ff8c79fd5c1eabed2a3a8df0c9a86c
SHA256

bdb5bae9af8e50f6f9961c44ec809abcdeb7321474be4a29dd7cc382ccb0a665
SHA512

03b09ded66c0369e7b290690333a51b0dbd250c4814775195943a0acc8270e76d87131482dc74ad7bad2f09b65302dc234c1886df1690f889a619aa797d6cce7
SSDEEP

768:bIDOw9UiaCHfjnE0Sf88AvvP1oghYvm9/6Dy8POKc:bIDOw9a0Dwo3P1ojvUSDhK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023114-12.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-1-5-21-2828415587-3732861812-1919322417-1000\Control Panel\International\Geo\Nation	2024-02-24_45c9b79117356c766e6508df36547f13_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4336	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 4400 wrote to memory of 4336	4400	2024-02-24_45c9b79117356c766e6508df36547f13_cryptolocker.exe	86
PID 4400 wrote to memory of 4336	4400	2024-02-24_45c9b79117356c766e6508df36547f13_cryptolocker.exe	86
PID 4400 wrote to memory of 4336	4400	2024-02-24_45c9b79117356c766e6508df36547f13_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-24_45c9b79117356c766e6508df36547f13_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_45c9b79117356c766e6508df36547f13_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4400
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4336

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
41KB

MD5
95df243a8208b8b1a0e2011f1f278b11

SHA1
565e94400cabef257b7f0bede6b6bcd94bbaf311

SHA256
ea4671792161a2a628fe195dc917924fdc58778dfff010fffc7e16a3af8b7097

SHA512
472c86e1a41efa800339457c54821d557f74b8fb3a7b4c596c34dfe9b78904a0647e8c5ec2833483d92b2dfa8f16a15fdfeba7fd72c90757d3ed262b1ffaf526

Download Submit
memory/4336-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4336-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4400-0-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4400-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4400-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download