0ddc6411db567f2e5cff46cc6620d0d0ffc0d0ef8753fb471302def94ed95258

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
31-05-2024 18:14

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General

Target

2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe
Size

33KB
MD5

a9c052649c95a4a9c8f26b8466cbaccd
SHA1

28599688fe2839e1f13ab4b7781b8d2158ffd21e
SHA256

0ddc6411db567f2e5cff46cc6620d0d0ffc0d0ef8753fb471302def94ed95258
SHA512

706a63d6a612376b00b381ee6579c530508acffed34cbba665116665fa2dbf1319b60f49c38387cc84b647d7832a2304124f1e08e3258d87e80414abd9ad3c33
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuat:bG74zYcgT/Ekd0ryfjw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4504-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002341c-13.dat	CryptoLocker_rule2
behavioral2/memory/2688-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4504-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2688-27-0x0000000008000000-0x000000000800A000-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2688	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 4504 wrote to memory of 2688	4504	2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe	82
PID 4504 wrote to memory of 2688	4504	2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe	82
PID 4504 wrote to memory of 2688	4504	2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4504
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2688

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
33KB

MD5
25aada3b3aa4c1c396953474966baacc

SHA1
c846f27f75564db69dd2ddbaa675c7a7c0903c51

SHA256
078766a84edef79159c1d088b5511588ec2705c51001fb29a7fdb3551693bde0

SHA512
9a5ab2b3c3d9a90b5a52955c6543c6b6b72296f8975f76005c15640bf8f6a4eb4bf880082eac2a73f8e4715896f5167fb18ebb1f8b2c79a307b204f335fcffab

Download Submit
memory/2688-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2688-20-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/2688-21-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/2688-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4504-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4504-1-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/4504-2-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4504-9-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/4504-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download