94bc749edff93cd779ba810f5e5cde7b3c39667201ac771c6074da5ca8858f70

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
26/04/2024, 05:01

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General

Target

2024-04-26_aae660ac11fe975952f00933a991384e_cryptolocker.exe
Size

31KB
MD5

aae660ac11fe975952f00933a991384e
SHA1

ebedd672d8700f60fe732645a572ae6a204b272c
SHA256

94bc749edff93cd779ba810f5e5cde7b3c39667201ac771c6074da5ca8858f70
SHA512

f66f9c287d40d70b4b327c53fc74c527f8d0643d494589c62bac63535838a133d679998db8a37e266f3430218142985ffac9358090166fc8ca5a4d1c21a74b30
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXu:bG74zYcgT/Ekd0ryfjz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/4676-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023270-13.dat	CryptoLocker_rule2
behavioral2/memory/4676-17-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/448-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/448-27-0x0000000008000000-0x000000000800A000-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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-26_aae660ac11fe975952f00933a991384e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
448	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 4676 wrote to memory of 448	4676	2024-04-26_aae660ac11fe975952f00933a991384e_cryptolocker.exe	85
PID 4676 wrote to memory of 448	4676	2024-04-26_aae660ac11fe975952f00933a991384e_cryptolocker.exe	85
PID 4676 wrote to memory of 448	4676	2024-04-26_aae660ac11fe975952f00933a991384e_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-26_aae660ac11fe975952f00933a991384e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_aae660ac11fe975952f00933a991384e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4676
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:448

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
31KB

MD5
a5123710cca9aea5f93f5688f75d812a

SHA1
7702d259b44204402a252b48aecc0a06fed6165b

SHA256
e7cbf40d3c07e7477802b1c96d1912485b18975eebd90246604f72c216ecaf80

SHA512
e680eecf2743add452609a0af9d2833b0677fc33ccb58ed11bd5eca43b21f5ed5f0f5418d078728dc81a19b46836e6c65ed46c44cc232531f34abccb238624b4

Download Submit
memory/448-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/448-20-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/448-23-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/448-27-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4676-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/4676-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4676-2-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4676-3-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4676-17-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download