64e58e36446046a0042841f6ebec5ac6d9c4a7d568195803106e0fde24242658

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 13:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-24_b2f6fec7d58be957357392545611fe7a_cryptolocker.exe
Size

43KB
MD5

b2f6fec7d58be957357392545611fe7a
SHA1

26cce53fae44112a4ca0508291d25ed8ef3a59d6
SHA256

64e58e36446046a0042841f6ebec5ac6d9c4a7d568195803106e0fde24242658
SHA512

a5ecc88b0bc99cf46964c065ea0ac017962dab081d92f5d9b0d1c0a5f5bd306824cf3c5186b196313c3764fa8e4da194d8ddac90e63b4209e11f8c3fcd0cb434
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen754XcwxbFp1Yvb9S3:bxNrC7kYo1Fxf3s05rwxbF7YvbU3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023122-12.dat	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-1-5-21-3844919115-497234255-166257750-1000\Control Panel\International\Geo\Nation	2024-02-24_b2f6fec7d58be957357392545611fe7a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2392	pissa.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 4508 wrote to memory of 2392	4508	2024-02-24_b2f6fec7d58be957357392545611fe7a_cryptolocker.exe	87
PID 4508 wrote to memory of 2392	4508	2024-02-24_b2f6fec7d58be957357392545611fe7a_cryptolocker.exe	87
PID 4508 wrote to memory of 2392	4508	2024-02-24_b2f6fec7d58be957357392545611fe7a_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-24_b2f6fec7d58be957357392545611fe7a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_b2f6fec7d58be957357392545611fe7a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4508
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:2392

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\pissa.exe

Filesize
43KB

MD5
f052ca6fdf5b023f87ae4a018099ec25

SHA1
1fb79b03736c1f399f5712fd3f7ccd4f3eebbdc2

SHA256
f97b8c92e1041aca9e8c1381627fb56a1a5a138c5538dae4f13c0273ffb5288c

SHA512
48b1c623df05f9fbe4540ca35ecbb33f1265358467cc9df2402ad13a50643016143d6bd7f918a0e36c530a5d2ed63d6a54c26ee72c80b72dda9c6aa14db5253c

Download Submit
memory/2392-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/2392-18-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4508-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4508-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4508-2-0x0000000002380000-0x0000000002386000-memory.dmp

Filesize
24KB

Download