8b052105f4dbae467cdd93ff1267167df1222fc486886347d9bc6bdc648ebcee

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:22

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General

Target

2024-05-23_0094d36a0d1e47c3dc585afff42475e4_cryptolocker.exe
Size

44KB
MD5

0094d36a0d1e47c3dc585afff42475e4
SHA1

79cfc668ee6ccb36ffada7210111cb9fc80f834e
SHA256

8b052105f4dbae467cdd93ff1267167df1222fc486886347d9bc6bdc648ebcee
SHA512

269793fab5dfc81e6ae4e08720e373eacd682961a14bb2f485e855ffdd5df4f3e2088a3604bf17b9deb92de22e16fad8d9c0771e60bcb283a72d8ada7b98b467
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUpEui0U3v:bm74zYcgT/Ekn0ryfjLuY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1808-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral2/memory/1808-17-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1132-18-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1132-26-0x0000000008000000-0x000000000800D000-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

Processes:

2024-05-23_0094d36a0d1e47c3dc585afff42475e4_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-23_0094d36a0d1e47c3dc585afff42475e4_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

1132 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1132	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_0094d36a0d1e47c3dc585afff42475e4_cryptolocker.exe

description	pid	process	target process
PID 1808 wrote to memory of 1132	1808	2024-05-23_0094d36a0d1e47c3dc585afff42475e4_cryptolocker.exe	hasfj.exe
PID 1808 wrote to memory of 1132	1808	2024-05-23_0094d36a0d1e47c3dc585afff42475e4_cryptolocker.exe	hasfj.exe
PID 1808 wrote to memory of 1132	1808	2024-05-23_0094d36a0d1e47c3dc585afff42475e4_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_0094d36a0d1e47c3dc585afff42475e4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_0094d36a0d1e47c3dc585afff42475e4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1808

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:1132

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
2c9b99bacd45c92cd500c5cb9ddb793f

SHA1
895d38d25e9c8feb9dd4f19c8700fb8e6a1393b3

SHA256
bf1e3256f627e2f595cddb82cf365c4a4fce8a9676aced7c26e18b86e5f17f5e

SHA512
8bd5ccdb4ca3b18c27fa9b0ba6398bd274d717b489338f16bc997646572968d4fd4fd668cebe89273626b7e75dcfed842a24fc70eafc923de3393c7cafd01e10

Download Submit
memory/1132-18-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1132-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1808-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1808-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1808-7-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1808-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1808-17-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download