4f6e2ff773ce76101057942b3fbf28f17fad4e99432c758038187ee79a801649

Analysis

max time kernel
153s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/03/2024, 13:42

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General

Target

2024-03-18_7e3c82aecba450c284e6a740b29fd71d_cryptolocker.exe
Size

26KB
MD5

7e3c82aecba450c284e6a740b29fd71d
SHA1

e312b0fcedb12d141542d55724671a99286fce4c
SHA256

4f6e2ff773ce76101057942b3fbf28f17fad4e99432c758038187ee79a801649
SHA512

7f57f600eceb16cb7e8b286911a9f94e786e8983e9246d4a5ff0e0d1bb7b3b96478225b67a4af9822a6f9eee70ecc23ee861b3aa8f54d4fe8a643f757d1c948d
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznuHH:b/yC4GyNM01GuQMNXuHH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002324f-13.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-18_7e3c82aecba450c284e6a740b29fd71d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4140	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 948 wrote to memory of 4140	948	2024-03-18_7e3c82aecba450c284e6a740b29fd71d_cryptolocker.exe	99
PID 948 wrote to memory of 4140	948	2024-03-18_7e3c82aecba450c284e6a740b29fd71d_cryptolocker.exe	99
PID 948 wrote to memory of 4140	948	2024-03-18_7e3c82aecba450c284e6a740b29fd71d_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-18_7e3c82aecba450c284e6a740b29fd71d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_7e3c82aecba450c284e6a740b29fd71d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:948
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4140

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1340 --field-trial-handle=2244,i,11878111470816612087,2265290141962607370,262144 --variations-seed-version /prefetch:8
1⤵
PID:3308

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
26KB

MD5
8f2afaaa989ec23ee2db49043b8818a1

SHA1
deef2aa2eedcb7b71b4f799892f8e7180de97334

SHA256
37c9d76f540d4049c7de70f775512ea7c3cf364041838c044051e1e829732248

SHA512
affcc9d85f8d7932e9d174243e9677f4ba57ebfb4c05dfbb7f2f71bdc7a77cd645da2f7eb446541427ba18657bd4db2c748c943487629f10ec22b5f7424aaf3f

Download Submit
memory/948-0-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/948-1-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/948-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4140-21-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download