3e0c47116373cfab04558f602b53701da88dfc42567007687146950d04d60997

Analysis

max time kernel
147s
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
01/05/2024, 10:22

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe
Size

37KB
MD5

03fbce37e4e6808ca57e054bd6daa17e
SHA1

7e9553c629f707f4f2478fd2694adbde3f206c93
SHA256

3e0c47116373cfab04558f602b53701da88dfc42567007687146950d04d60997
SHA512

c5216a2c7ea274f1f64fbea017842c5bf7529f6869ef5440ed511b604684a23068792a0551502b72b9c9fdce3c194145a7d0e95db10ff1ed1c3111798203ed27
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mJ:bc/y2lLRU6zA6qJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023262-13.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	2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2268	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 3640 wrote to memory of 2268	3640	2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe	89
PID 3640 wrote to memory of 2268	3640	2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe	89
PID 3640 wrote to memory of 2268	3640	2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3640
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:2268

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=1040 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:2824

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
37KB

MD5
384bebec2a2041742f0365daa2168e8d

SHA1
88d7de0ad70084db3b77a89785b1e0f8091c644f

SHA256
141a41dd50216c666a007af8403ec2d63a946e8ca0043cfeed0f383f7daa99c9

SHA512
6ea9ed03bb335dc657045c5a07d2eb041bd47372d5d7f5b868a19afe675993ee9a888af0c73b9b8583f187d251098bea98f87108f81891813cdbb8dd9b25aff0

Download Submit
memory/2268-26-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/3640-0-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/3640-1-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download
memory/3640-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download