3ea9dd40fc3dc3a259c640615921bc5ba2ddd1b01d1508dcaacc9d739b908200

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24-04-2024 17:41

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General

Target

2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe
Size

36KB
MD5

770b0ac1605cbd2fddedb0ae6d10a6b9
SHA1

f3030f5debc99998f3858c4fb14276bf8d35c496
SHA256

3ea9dd40fc3dc3a259c640615921bc5ba2ddd1b01d1508dcaacc9d739b908200
SHA512

be0cd0ce6166e9e1f9aaf3ec76f96f469b22becf2d40b18ac8d7e77bb1ec1835ad5cc655335ffa297edd03a5fbfec361ad74d19694815b29ab6c230ba8c5ba61
SSDEEP

384:bmM0V/YPvnr801TRoUGPh4TKt6ATt1DqgPa3s/zzoCt9/B1RU3qE4kb6oY26J:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36J

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3300	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 4996 wrote to memory of 3300	4996	2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe	87
PID 4996 wrote to memory of 3300	4996	2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe	87
PID 4996 wrote to memory of 3300	4996	2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_770b0ac1605cbd2fddedb0ae6d10a6b9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4996
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:3300

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
36KB

MD5
76b943216c738938bffece6c314f0d08

SHA1
597e828206e6369c33080c04d60fe13ab35037bb

SHA256
5962c1b91bf4a665c13dd6d5667ee1914ca9307a58e3db8350715da64a136354

SHA512
7ca550465cb4cb8d00740aa3aea44426fa063735f65b79d9d4fe9acff9c5836f7c12f57da1b433905cc10e75bc9ed27e8b2b84ee34e6e7effb7bbff33ded0e4f

Download Submit
memory/3300-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4996-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4996-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4996-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download