3b1409a1e7bbb1c24a5dde8e62d6b08741f07a7c4e7ee1ea892aed9c823894b1

Analysis

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

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 07:30

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General

Target

2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe
Size

32KB
MD5

389f831ea5b4b59918688e6a8e5da593
SHA1

12c8ba297e458620245f4428414b91831f5334cd
SHA256

3b1409a1e7bbb1c24a5dde8e62d6b08741f07a7c4e7ee1ea892aed9c823894b1
SHA512

dd6c7dd923f6e8c4f52b289ce39cd493c0e15b6926d46607db1e4e669cc576af45213541387a965032a2de1cf931339de160404abe84d61ab0103243c1bf3bdc
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGJO:bG74zYcgT/Ekd0ryfjF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2724-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023298-13.dat	CryptoLocker_rule2
behavioral2/memory/2724-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/972-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/972-27-0x0000000008000000-0x000000000800A000-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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
972	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 2724 wrote to memory of 972	2724	2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe	82
PID 2724 wrote to memory of 972	2724	2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe	82
PID 2724 wrote to memory of 972	2724	2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_389f831ea5b4b59918688e6a8e5da593_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:972

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
32KB

MD5
5ac067e738a555cc199646824e2c7953

SHA1
fc16dbae0dd9c7a6d7fb24dade51286de7e77ad5

SHA256
51c6b90286089a8c2484f6392a791cfb170327888f14fd38032b9f0a3e6f81fd

SHA512
17dc30958447e2d96738a49f72e369a6559097bd7a2c08c751d5995ff09695d556fe25e1a6a8c612d7fc9d8959ee03bbca60ce10cca6b9353d95d16cbe007140

Download Submit
memory/972-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/972-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/972-26-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/972-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2724-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2724-1-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/2724-3-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/2724-2-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download
memory/2724-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download