41a62e941af4fcffcbc54374564e19fa7af55c8cd47eb178b1cf0a0903934e6b

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
29-05-2024 00:31

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General

Target

2024-05-29_7e6c5ed9104a5ab083c35fe2a20817a3_cryptolocker.exe
Size

38KB
MD5

7e6c5ed9104a5ab083c35fe2a20817a3
SHA1

b24a4a47123ef7da1f73e84ad057691b05932ac2
SHA256

41a62e941af4fcffcbc54374564e19fa7af55c8cd47eb178b1cf0a0903934e6b
SHA512

ccc32c5e65fd46ae097e2db0b16c4bf692892bd1ddb5ead746c4c11c35c4daf3ef0cd0b68ab4bd1c7309c8a1e1446518f7012e7d846bd6e254d5b31c5d5d3689
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mhI:bc/y2lLRU6zA6qa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233ee-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-29_7e6c5ed9104a5ab083c35fe2a20817a3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5064	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 4976 wrote to memory of 5064	4976	2024-05-29_7e6c5ed9104a5ab083c35fe2a20817a3_cryptolocker.exe	82
PID 4976 wrote to memory of 5064	4976	2024-05-29_7e6c5ed9104a5ab083c35fe2a20817a3_cryptolocker.exe	82
PID 4976 wrote to memory of 5064	4976	2024-05-29_7e6c5ed9104a5ab083c35fe2a20817a3_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-29_7e6c5ed9104a5ab083c35fe2a20817a3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_7e6c5ed9104a5ab083c35fe2a20817a3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4976
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:5064

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
38KB

MD5
7a20591a2749e4fdb0315eb26e3f003e

SHA1
a93d57333b326f00df46325b39b0c139af241a2b

SHA256
7160e020184116915e041ff9e05076c959ac4297b6f57b0bbe4a5ccba1324de7

SHA512
ec35943db7696c0574def04cf9a8a593814bc9d921bdb3e73da8ad840e99daa7c2c8260a38b3adf5ebad539fc27cf5020a557f1490a9a39b769fbb9f7697230d

Download Submit
memory/4976-0-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/4976-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4976-1-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/5064-25-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download