58225887b0232d1f7fe81fe08f791d15acc6bd9f93352d4f2052500700a01598

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
13/05/2024, 19:34

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General

Target

2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe
Size

44KB
MD5

622ce6eaaaef1052095a19d9259e7a77
SHA1

bacb0cfca2079fcf9a4221837875bd7aff90177f
SHA256

58225887b0232d1f7fe81fe08f791d15acc6bd9f93352d4f2052500700a01598
SHA512

e7c2dc6e361fa9fd1c95db7a6eccef26d138079e2f84f884897e41d199d50eafd8e20cab1acaabb4f20ea34e2cce48b4d927fa34643d89d8c8850a057d6340b6
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUpEui0U3o:bm74zYcgT/Ekn0ryfjLuH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2272-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00060000000232a6-13.dat	CryptoLocker_rule2
behavioral2/memory/3068-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2272-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3068-27-0x0000000008000000-0x000000000800D000-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-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3068	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 2272 wrote to memory of 3068	2272	2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe	82
PID 2272 wrote to memory of 3068	2272	2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe	82
PID 2272 wrote to memory of 3068	2272	2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_622ce6eaaaef1052095a19d9259e7a77_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3068

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
3b4caa357302539514a8e9e665b2a669

SHA1
30c5efb5f1fcef922d7fb4ee53400b438d43e308

SHA256
26c53674eda38f0a6629002183a878a44b991449bd4ef419eccba090d03182f1

SHA512
9666db6c03ec2f0894c9218c8ba39cb4ecf4bd62a9e837649a61df91f49e70ce5e1243ee9e9226b4f81962984b086721bc1b530a79599783712fdda2ddec49e2

Download Submit
memory/2272-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2272-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2272-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2272-9-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2272-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3068-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/3068-20-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/3068-26-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/3068-27-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download