062a2f4fc9713797e628fa231a4295abc75e746c0baabdf480252071bb1b06cf

Analysis

max time kernel
151s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 16:45

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General

Target

2024-05-29_074775682094ad4f46674645def17ccb_cryptolocker.exe
Size

44KB
MD5

074775682094ad4f46674645def17ccb
SHA1

304acb7e0e99837739179b335dd08789447dba33
SHA256

062a2f4fc9713797e628fa231a4295abc75e746c0baabdf480252071bb1b06cf
SHA512

1270d62a972231113993b3323ab82c01326c67dfbd8ab1d086b7ecfcd12f49ce839806ee6323d9f1bd4b328a896b4a93b1217f3b6368a4d221837014dd603641
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAS:b/pYayGig5HjS3NPAS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002326c-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	2024-05-29_074775682094ad4f46674645def17ccb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4232	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 4972 wrote to memory of 4232	4972	2024-05-29_074775682094ad4f46674645def17ccb_cryptolocker.exe	89
PID 4972 wrote to memory of 4232	4972	2024-05-29_074775682094ad4f46674645def17ccb_cryptolocker.exe	89
PID 4972 wrote to memory of 4232	4972	2024-05-29_074775682094ad4f46674645def17ccb_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-05-29_074775682094ad4f46674645def17ccb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_074775682094ad4f46674645def17ccb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4972
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4232

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=4240 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:8
1⤵
PID:3184

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
45KB

MD5
3bd5b4e35152a9a4dc3b7dbb9128371d

SHA1
e12514aca819153f510709f3f941d4e7c986bd91

SHA256
00875f5ee96c8a920e876d5b1dc70ee23c8c079ef5fbfb6eab2e3ab9e570c710

SHA512
dc751c2a91aad2226e01cf677cc05c691a340d576313d555718d74c786d9453a723fa6e17d30d9dbb625e902280ae1b3e4d1212599d697d06e3d036beb406f3e

Download Submit
memory/4232-19-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/4972-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4972-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4972-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download