0fd4ba050d6c8d3c2f639dd34f5202319beb1674bc7a61c9f800b86c1524ea0b

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
03-06-2024 00:23

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General

Target

2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe
Size

43KB
MD5

066d2640bb06f47de340535ba2b4c769
SHA1

d08c1ff3d974734fc1d77e5cf54f3cabae3b15d9
SHA256

0fd4ba050d6c8d3c2f639dd34f5202319beb1674bc7a61c9f800b86c1524ea0b
SHA512

a26fe6405f9fcf4e1962522c13d00d077532a64ecc99b87360a0594bcd79e6ad7f494394b4a70def79bb9685fbcaca6117bd2ca145cbb955cd179d80fcc38ad6
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAqtU:bCDOw9aMDooc+vAqtU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4684-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a00000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/4684-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1236-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1236-27-0x0000000008000000-0x000000000800A000-memory.dmp	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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1236	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 4684 wrote to memory of 1236	4684	2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe	83
PID 4684 wrote to memory of 1236	4684	2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe	83
PID 4684 wrote to memory of 1236	4684	2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_066d2640bb06f47de340535ba2b4c769_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4684
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1236

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
43KB

MD5
5e5eb0b3af94fdb5099ee6e855f569df

SHA1
5ec3c839bfe6ba08199504e85eeb7e7cb60342cf

SHA256
c9de61345b4ead771815e93f4131f9fbdf24a72b657458370880e527efcf80fa

SHA512
c22778d98eb911db3821ef57f8486f1018193b5e36eea3374dc74ad8e94f131597a0675cdf3953fedbbe612640a4a6c3c3044cf86f173ef493139ebe1aeae534

Download Submit
memory/1236-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1236-26-0x0000000001FC0000-0x0000000001FC6000-memory.dmp

Filesize
24KB

Download
memory/1236-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4684-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4684-1-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/4684-2-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/4684-3-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/4684-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download