7980ada38ca1bc359333373fa86a1245d7e8c19c35c882ed0c69d2eaee41ebad

Analysis

max time kernel
154s
max time network
158s
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, 13:37

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General

Target

2024-03-14_523e0250a4bf004c9e1ff63c59c8eefa_cryptolocker.exe
Size

34KB
MD5

523e0250a4bf004c9e1ff63c59c8eefa
SHA1

8ff992b97c07badec386d9e22b9352c19d2f2f2a
SHA256

7980ada38ca1bc359333373fa86a1245d7e8c19c35c882ed0c69d2eaee41ebad
SHA512

725313e5440ab1a7e31392f3ab0cf40cdca35044a0e7373b9f12e8ebbff5beebb8617ee25efa2af0e0c2456d33f449ae3cc9c5750a467027640d58434cf8b919
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RwFteWcdaJ7:b7o/2n1TCraU6GD1a4Xt9bRwW9aJ7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001ea83-12.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_523e0250a4bf004c9e1ff63c59c8eefa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4040	rewok.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 5084 wrote to memory of 4040	5084	2024-03-14_523e0250a4bf004c9e1ff63c59c8eefa_cryptolocker.exe	98
PID 5084 wrote to memory of 4040	5084	2024-03-14_523e0250a4bf004c9e1ff63c59c8eefa_cryptolocker.exe	98
PID 5084 wrote to memory of 4040	5084	2024-03-14_523e0250a4bf004c9e1ff63c59c8eefa_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-03-14_523e0250a4bf004c9e1ff63c59c8eefa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_523e0250a4bf004c9e1ff63c59c8eefa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5084
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4040

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=1408 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:3056

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\rewok.exe

Filesize
34KB

MD5
3193a9b821c1daac2a6a9f7c1a2318e6

SHA1
8a3e43ba731f70199b202258bbe396c10315464e

SHA256
b97a96d35ed8fbb34d56930ccb338397666df5ee11306ef3e9b6d76a5711e90e

SHA512
7d8949184380d68da81d6f12ba5e68cfb90c42a0ed151f8eda2c6cbc5ca93d8744a61fb4d76b7d40ec1ae5934ebfe27af2e8830fc5b2472887a777c9d10bb4ae

Download Submit
memory/4040-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/5084-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/5084-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/5084-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download