de58ab0177dd7e5e33b2c10b3acec97c865e4b96699acf709d6485b125891d45

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
27/05/2024, 15:45

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General

Target

2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe
Size

44KB
MD5

33e1a1899734632a92c882da7811b7ee
SHA1

8ecc29244eb8b4ca86510f35a1246c6e1c9ff87c
SHA256

de58ab0177dd7e5e33b2c10b3acec97c865e4b96699acf709d6485b125891d45
SHA512

ee74d7450850ea408e3c842ce0f72a9bbda18c9ed290a4d97c10037e21a240f4e4f919a68b999d5d84d32b78275929bc6818107837182d6104026ee05bf0cd76
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jb0nrlwfjDUklh:bm74zYcgT/EkM0ryfjdL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3036-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/2056-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3036-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2056-27-0x0000000008000000-0x000000000800D000-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	2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2056	hasfj.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 3036 wrote to memory of 2056	3036	2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe	83
PID 3036 wrote to memory of 2056	3036	2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe	83
PID 3036 wrote to memory of 2056	3036	2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-27_33e1a1899734632a92c882da7811b7ee_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2056

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\hasfj.exe

Filesize
44KB

MD5
7c875ca57d1fd4b40a97a2523ad002e9

SHA1
bfd238b969e7585ceca54ba0b7b63fdd55c96468

SHA256
28e62f9a859722c08743566b98f34e40c234baf62ad2e4f4327168d3eb0e9bfe

SHA512
909c6ea7f5f89f2033b94b99e47bf5cd2fb55b25fc0ffda7624ba714352850dc3324268c0007ef7ade5663d9190bf994148d12ca64148b174eb25ab4a1512793

Download Submit
memory/2056-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2056-26-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2056-20-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/2056-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3036-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3036-1-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/3036-9-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/3036-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3036-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download