d3d446c6a765351e56342a942e110fba3c7f8a7c57277244c2a7a6241a64fea0

Analysis

max time kernel
153s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
14/03/2024, 15:48

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General

Target

2024-03-14_b069aa2a7738e02f1aa060395174e5a3_cryptolocker.exe
Size

34KB
MD5

b069aa2a7738e02f1aa060395174e5a3
SHA1

f1ec01b771f7c065edc6d2eb2cd706b9a81633b0
SHA256

d3d446c6a765351e56342a942e110fba3c7f8a7c57277244c2a7a6241a64fea0
SHA512

a567df6c45d8f90332f8a5c444275000c90d30935b646304df6603f10242dac6aae63f48b122a17fa2575405a181ce5e8a12376af3ab8f0c3a2d34223fc78c13
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6A0MFNePXV:b/yC4GyNM01GuQMNXw2PSjH+VPXV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-03-14_b069aa2a7738e02f1aa060395174e5a3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2508	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 224 wrote to memory of 2508	224	2024-03-14_b069aa2a7738e02f1aa060395174e5a3_cryptolocker.exe	99
PID 224 wrote to memory of 2508	224	2024-03-14_b069aa2a7738e02f1aa060395174e5a3_cryptolocker.exe	99
PID 224 wrote to memory of 2508	224	2024-03-14_b069aa2a7738e02f1aa060395174e5a3_cryptolocker.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-03-14_b069aa2a7738e02f1aa060395174e5a3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_b069aa2a7738e02f1aa060395174e5a3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:224
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:2508

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=1416 --field-trial-handle=3088,i,14310325015283915034,7660943942870463106,262144 --variations-seed-version /prefetch:8
1⤵
PID:3864

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
15cd36409054c18997e8482f20b7dacf

SHA1
5e566688bc90b6754b918fb777399fab25c77a3b

SHA256
62743d9ba14bd9554b2f27aac02c2e58fa56db63d2e8047087b17b8c7c68501e

SHA512
6799a6e2a6d393e8f99f4fb6a7d1af14d5af987d0cda260490ed7653ef7d3108fe2030842373bf85511eba77902d7061c7968d2e6d893a024788f1fc813fd044

Download Submit
memory/224-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/224-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/224-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2508-24-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download