4ba773bf6391481aee38a7555d87951b3abad0f3fca4829b9b5ae6af946068f3

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
05/04/2024, 03:24

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General

Target

2024-04-05_0106945a8f07ce109a34e925d172715f_cryptolocker.exe
Size

387KB
MD5

0106945a8f07ce109a34e925d172715f
SHA1

201fe813688c105eac8a2725da29fc2821e10c4f
SHA256

4ba773bf6391481aee38a7555d87951b3abad0f3fca4829b9b5ae6af946068f3
SHA512

ce992654e4fe5bc4c17d43af82a3982e0d9d6b1ad0e6948f2cdde3ff6e7370a877f069cbbb13346ac5694af11ce8158064f61783c219a20868bc130a7f0a9f2e
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXT:nnOflT/ZFIjBz3xjTxynGUOUhXT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002338c-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-1-5-21-817259280-2658881748-983986378-1000\Control Panel\International\Geo\Nation	2024-04-05_0106945a8f07ce109a34e925d172715f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1384	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 4148 wrote to memory of 1384	4148	2024-04-05_0106945a8f07ce109a34e925d172715f_cryptolocker.exe	96
PID 4148 wrote to memory of 1384	4148	2024-04-05_0106945a8f07ce109a34e925d172715f_cryptolocker.exe	96
PID 4148 wrote to memory of 1384	4148	2024-04-05_0106945a8f07ce109a34e925d172715f_cryptolocker.exe	96

C:\Users\Admin\AppData\Local\Temp\2024-04-05_0106945a8f07ce109a34e925d172715f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_0106945a8f07ce109a34e925d172715f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4148
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1384

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=3800 --field-trial-handle=2260,i,4762972005863767630,9297428255150568035,262144 --variations-seed-version /prefetch:8
1⤵
PID:5100

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
387KB

MD5
422f3127e42e4379ad0f14d078cbdcf2

SHA1
251b8007d31b188be67ae3e506db7bea4002789e

SHA256
b8b672b86f118b929276c7c2dd5d1b4ae5553d3b039b083f5fa322a7b0ea4d48

SHA512
7e637357ed1a6ad0094d953af3d049f80685a868a6e930ad5f8cedbfbb2242b96df9d7b5446bcdd2fe2fe96573efaef4209787ecbeb3c1fc3e0fd35ab2383a58

Download Submit
memory/1384-17-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/1384-18-0x0000000001F90000-0x0000000001F96000-memory.dmp

Filesize
24KB

Download
memory/4148-0-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4148-1-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download
memory/4148-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download