659bc0cb3a437af52fd1465703e07180bd15a01c89dc0dbec442f4e89af61008

Analysis

max time kernel
139s
max time network
126s
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 02:23

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General

Target

2024-05-23_171a2f8a391d6a9a909bf796ab6cd90c_cryptolocker.exe
Size

35KB
MD5

171a2f8a391d6a9a909bf796ab6cd90c
SHA1

bb4d29f712f2cc98ec3d07e38c943cb074bee0e5
SHA256

659bc0cb3a437af52fd1465703e07180bd15a01c89dc0dbec442f4e89af61008
SHA512

b5bd876d4ced30658f4230888cf93309f80808903764b78315063e1d0613cf738dc573d004446ac31ef69e20013f9f62f7cb6c07a11ea5db92a23e3afea596f6
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Pp7JH:bxNrC7kYo1Fxf2rY1dH

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:

2024-05-23_171a2f8a391d6a9a909bf796ab6cd90c_cryptolocker.exepissa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-23_171a2f8a391d6a9a909bf796ab6cd90c_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

Processes:

pissa.exe

pid process

3820 pissa.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3820	pissa.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_171a2f8a391d6a9a909bf796ab6cd90c_cryptolocker.exe

description	pid	process	target process
PID 5000 wrote to memory of 3820	5000	2024-05-23_171a2f8a391d6a9a909bf796ab6cd90c_cryptolocker.exe	pissa.exe
PID 5000 wrote to memory of 3820	5000	2024-05-23_171a2f8a391d6a9a909bf796ab6cd90c_cryptolocker.exe	pissa.exe
PID 5000 wrote to memory of 3820	5000	2024-05-23_171a2f8a391d6a9a909bf796ab6cd90c_cryptolocker.exe	pissa.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_171a2f8a391d6a9a909bf796ab6cd90c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_171a2f8a391d6a9a909bf796ab6cd90c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5000

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:3820

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\pissa.exe
Filesize
35KB

MD5
1f03407793f7a443bbfd3a240cb2fa1c

SHA1
d26dcffb6b049b0f26a721b3f48adc1028743446

SHA256
69d9dc46686ae93d1a31e107f6a3801cac127e90e9105fecc69d54af23f4d90d

SHA512
946a9a222c1f358e8d59dfde73b0562abc0a39e061e77efb518b5c3dc1c99aad6561291fdf6b55cd38c2c427e31b3fdf449bab722d94013c2eb22e34724f1fab

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe
Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/3820-18-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/3820-23-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/5000-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5000-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/5000-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download