989d0c8ad792d24fb01649cdd3ce573209b88ac21f8ffd35f453c76081be06de

Analysis

max time kernel
149s
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
22-05-2024 02:22

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General

Target

2024-05-22_05bbfa55fd88a3fcde9d8acf0d19f1c5_cryptolocker.exe
Size

35KB
MD5

05bbfa55fd88a3fcde9d8acf0d19f1c5
SHA1

f2f0b42b0f106f48962ed2d058bde71aca5a2be8
SHA256

989d0c8ad792d24fb01649cdd3ce573209b88ac21f8ffd35f453c76081be06de
SHA512

93a7ad717d250f0aad8d418c9f8d3d89aca3e919a80d3d1c62d17aa269d953ff1355d0b72edfab59827fba78c931e14fab55d27c039db1258e2bc924c1fa8400
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Pp70WTNlk:bxNrC7kYo1Fxf2rY1Dk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\pissa.exe	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-22_05bbfa55fd88a3fcde9d8acf0d19f1c5_cryptolocker.exepissa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-22_05bbfa55fd88a3fcde9d8acf0d19f1c5_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

Processes:

pissa.exe

pid process

2188 pissa.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2188	pissa.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_05bbfa55fd88a3fcde9d8acf0d19f1c5_cryptolocker.exe

description	pid	process	target process
PID 3748 wrote to memory of 2188	3748	2024-05-22_05bbfa55fd88a3fcde9d8acf0d19f1c5_cryptolocker.exe	pissa.exe
PID 3748 wrote to memory of 2188	3748	2024-05-22_05bbfa55fd88a3fcde9d8acf0d19f1c5_cryptolocker.exe	pissa.exe
PID 3748 wrote to memory of 2188	3748	2024-05-22_05bbfa55fd88a3fcde9d8acf0d19f1c5_cryptolocker.exe	pissa.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_05bbfa55fd88a3fcde9d8acf0d19f1c5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_05bbfa55fd88a3fcde9d8acf0d19f1c5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3748

C:\Users\Admin\AppData\Local\Temp\pissa.exe
"C:\Users\Admin\AppData\Local\Temp\pissa.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:2188

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\pissa.exe

Filesize
35KB

MD5
683f14d32c71b7c8acdd91c4733bb5c8

SHA1
f9367115012966efe3b60067344697bf5d5eda37

SHA256
bf3669fc93e81c8a869f1142a96ab14d66551aa96d511b707a5837e7eb6f49a3

SHA512
e2929ec7635d4005ade6221ba5d9f73039fd05d6cb4c1f2a5e252e1b6aa0eb5f0f83765bbc7a683215ac31a62beb37d9853154a148cb75dd78db7bcece3e8aa0

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/2188-17-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/2188-23-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/3748-0-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/3748-1-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/3748-8-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download