2e88c9677716a52c26517d08ca6fdc9fa8812d307de7025f457597d4e727d987

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 09:51

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General

Target

2024-02-28_aff1ddbd3bee7082b16cce81f246a10a_cryptolocker.exe
Size

34KB
MD5

aff1ddbd3bee7082b16cce81f246a10a
SHA1

208d116f214a67966846931d7d22a5c2b12f6dba
SHA256

2e88c9677716a52c26517d08ca6fdc9fa8812d307de7025f457597d4e727d987
SHA512

0fc9e8bbd34e3fe92ffb9927215ad91bad283e2ef6c5cdfaf59e6378fc1c504cd9c981376dac4c1de7b5854993a68797c5af964437f8efe6700d9ef77946f7b2
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6A0X/EIjH:b/yC4GyNM01GuQMNXw2PSjH+PPH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-02-28_aff1ddbd3bee7082b16cce81f246a10a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1228	retln.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 3880 wrote to memory of 1228	3880	2024-02-28_aff1ddbd3bee7082b16cce81f246a10a_cryptolocker.exe	89
PID 3880 wrote to memory of 1228	3880	2024-02-28_aff1ddbd3bee7082b16cce81f246a10a_cryptolocker.exe	89
PID 3880 wrote to memory of 1228	3880	2024-02-28_aff1ddbd3bee7082b16cce81f246a10a_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-28_aff1ddbd3bee7082b16cce81f246a10a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_aff1ddbd3bee7082b16cce81f246a10a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3880
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:1228

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\retln.exe

Filesize
34KB

MD5
d0233f97ffdcaa349c25761c62e15f7b

SHA1
f9a8d06eaba78f3401cc79ca0bc01c571530a21b

SHA256
071f778c5cbe5ff5a818d5ef0e853dba4ea904428b6bf6dafa52c7ff13fa53c8

SHA512
5469cf634bb8798846bd89c0194c3425d511b3438ea6ab53df979117dad2b827ef45db42c69ea77a0c26a8134cbe65d1505e8f974aae9961f6ebb5dd6487efdd

Download Submit
memory/1228-20-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3880-0-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/3880-1-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/3880-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download