14c91922318520021b2b6477caf6d9f777046237464991065398eab2434e5064

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
21-05-2024 05:07

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General

Target

2024-05-21_8ce69152a7aa7deffde0ff619b1d5d34_cryptolocker.exe
Size

55KB
MD5

8ce69152a7aa7deffde0ff619b1d5d34
SHA1

b58bd43d1b714d3d2eaebe6e70f0233634e74d02
SHA256

14c91922318520021b2b6477caf6d9f777046237464991065398eab2434e5064
SHA512

920e74cca8b5d17ce2225268b8e27b42b06da276d139fa97827546f5adf61097af389ac346dd77f901d4f560bc65f5c29d344b7885e7ffa7c3219228a3f312e8
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9XbTb8puaH:bIDOw9a0DwitDZzcTLaH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002340d-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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-21_8ce69152a7aa7deffde0ff619b1d5d34_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4948	lossy.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 2508 wrote to memory of 4948	2508	2024-05-21_8ce69152a7aa7deffde0ff619b1d5d34_cryptolocker.exe	82
PID 2508 wrote to memory of 4948	2508	2024-05-21_8ce69152a7aa7deffde0ff619b1d5d34_cryptolocker.exe	82
PID 2508 wrote to memory of 4948	2508	2024-05-21_8ce69152a7aa7deffde0ff619b1d5d34_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-21_8ce69152a7aa7deffde0ff619b1d5d34_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_8ce69152a7aa7deffde0ff619b1d5d34_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2508
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:4948

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\lossy.exe

Filesize
56KB

MD5
2a7160e03f5f1981d322bf27d1f3886e

SHA1
5a48c79b7b6ab648401c4a6747eb17351aa82ffc

SHA256
2f234dc39ed94446e59814ad52412a3dc27c7046cd83277f917da72da1030c4d

SHA512
42eed33c28344bd0076f3231e1aef253e63b5f8ace1ac5f88aa63f817494ebcda5eecb027962870d40d55e1aff973346148e97846efef5ec964dfb61b8fe1a37

Download Submit
memory/2508-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2508-1-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2508-8-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4948-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4948-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download