88017eb83def837746beae12d97971b96410aab0da114d9fc6da4e6bf69d4be4

Analysis

max time kernel
137s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:33

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General

Target

2024-05-22_526b503cae9bcfec5a5fc6671d896066_cryptolocker.exe
Size

34KB
MD5

526b503cae9bcfec5a5fc6671d896066
SHA1

47b1bc52ef46b6628def4cf5a08622b1a3e517ec
SHA256

88017eb83def837746beae12d97971b96410aab0da114d9fc6da4e6bf69d4be4
SHA512

4cda67f7ac969cb2f37d1bd09a66474846d72159bd01b7aca7f58ee037544784aaf8436b22d6e051adc1a50476aaa1930024916a55f369c62f90976c1ce0c1e5
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5M4go:bxNrC7kYo1Fxf2rYA3o

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_526b503cae9bcfec5a5fc6671d896066_cryptolocker.exepissa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-22_526b503cae9bcfec5a5fc6671d896066_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

1016 pissa.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1016	pissa.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_526b503cae9bcfec5a5fc6671d896066_cryptolocker.exe

description	pid	process	target process
PID 4712 wrote to memory of 1016	4712	2024-05-22_526b503cae9bcfec5a5fc6671d896066_cryptolocker.exe	pissa.exe
PID 4712 wrote to memory of 1016	4712	2024-05-22_526b503cae9bcfec5a5fc6671d896066_cryptolocker.exe	pissa.exe
PID 4712 wrote to memory of 1016	4712	2024-05-22_526b503cae9bcfec5a5fc6671d896066_cryptolocker.exe	pissa.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_526b503cae9bcfec5a5fc6671d896066_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_526b503cae9bcfec5a5fc6671d896066_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4712

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:1016

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
1ad3d699afe5539681f1ae7c37a585af

SHA1
857a78e2fd6b9a3be23899905e0f4c52dc34b449

SHA256
274a7cbad242aa2be44e5bee5cedd2ebac5ae2fe16bed8d6458bb8a4db6ea946

SHA512
eb77944ccae90ec7a663e23d1730a55146cedcd3865de5c653e58945c739b6c6e26b1a25960ae514fc48bfcbaf1c4919ed0360c59068f6e0cacf000e01cf2296

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/1016-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1016-23-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/4712-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4712-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4712-8-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download