aa4de9e49cd5e596ed071645870bb3a516c60e33662c7e479d23a1227e3ce6b2

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25-03-2024 20:40

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General

Target

2024-03-25_a7656e968071489e7327ae8790283473_cryptolocker.exe
Size

43KB
MD5

a7656e968071489e7327ae8790283473
SHA1

15400a0a729d81b322cdeeda2835c9952471637d
SHA256

aa4de9e49cd5e596ed071645870bb3a516c60e33662c7e479d23a1227e3ce6b2
SHA512

fcb89885f5755c45a57c8e4da0007d2b46a14734ad7cce9aa73c456990ecd535d9b1e0f3c356e4426555630d13e4e0606f9d2e372edeee22ce89ac78faa92888
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDDw3sCu5b+syQNAx:bgGYcA/53GADw8Cl/nx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000002271f-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	2024-03-25_a7656e968071489e7327ae8790283473_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1444	hasfj.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 4908 wrote to memory of 1444	4908	2024-03-25_a7656e968071489e7327ae8790283473_cryptolocker.exe	97
PID 4908 wrote to memory of 1444	4908	2024-03-25_a7656e968071489e7327ae8790283473_cryptolocker.exe	97
PID 4908 wrote to memory of 1444	4908	2024-03-25_a7656e968071489e7327ae8790283473_cryptolocker.exe	97

C:\Users\Admin\AppData\Local\Temp\2024-03-25_a7656e968071489e7327ae8790283473_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_a7656e968071489e7327ae8790283473_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4908
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1444

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=3208 --field-trial-handle=2256,i,6670388345726423024,18382795228658886258,262144 --variations-seed-version /prefetch:8
1⤵
PID:3668

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\hasfj.exe

Filesize
44KB

MD5
ec467903915589a74d6b39d5860728b3

SHA1
1f579403a7805ec7309f70a1c2c3d59123a49f09

SHA256
46a63c445b2e2cc609c998647b4b5e9dc7a89ac4156e39fe1aa3c86ebb371636

SHA512
ac5b7a4135eb8c4696abcff4861c513fab6e1f0878fb2625c488023ee131b82985ed527e69fb7cc244af600a0bdf8a186b1bfe191aeccaefff58b098f4506233

Download Submit
memory/1444-17-0x0000000002280000-0x0000000002286000-memory.dmp

Filesize
24KB

Download
memory/1444-19-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/4908-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4908-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4908-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download