54f3404ac3892dadeda4004041274cfb7f12cd10924f91e2f04d9b86473bb1ea

Analysis

max time kernel
136s
max time network
124s
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 02:47

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General

Target

2024-05-22_bda9f5903bac7c2721b50b6b0cb992fd_cryptolocker.exe
Size

35KB
MD5

bda9f5903bac7c2721b50b6b0cb992fd
SHA1

0127b73855d69f90f45202095cd04c5984e88ddd
SHA256

54f3404ac3892dadeda4004041274cfb7f12cd10924f91e2f04d9b86473bb1ea
SHA512

b743539de64c57a1c0561bbea8dc1ac3b2e7f3a451bc0acbbb9093b8110aa9268ee03779a2530e52beb588f7983c4612e18d4a2dc7b97ba23abd7d7d0b947474
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5eN:bxNrC7kYo1Fxf2rYe

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_bda9f5903bac7c2721b50b6b0cb992fd_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_bda9f5903bac7c2721b50b6b0cb992fd_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

4376 pissa.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4376	pissa.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_bda9f5903bac7c2721b50b6b0cb992fd_cryptolocker.exe

description	pid	process	target process
PID 5780 wrote to memory of 4376	5780	2024-05-22_bda9f5903bac7c2721b50b6b0cb992fd_cryptolocker.exe	pissa.exe
PID 5780 wrote to memory of 4376	5780	2024-05-22_bda9f5903bac7c2721b50b6b0cb992fd_cryptolocker.exe	pissa.exe
PID 5780 wrote to memory of 4376	5780	2024-05-22_bda9f5903bac7c2721b50b6b0cb992fd_cryptolocker.exe	pissa.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_bda9f5903bac7c2721b50b6b0cb992fd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_bda9f5903bac7c2721b50b6b0cb992fd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5780

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:4376

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
b54fa5088bb06e0be28bba26b3c60bcd

SHA1
9f1e12485cb77b2b7e70abc0c50f95c77aa50748

SHA256
1d2fd8536ef034cfc3feeec5651d8f0e789e335da3906f340fba32108dca336f

SHA512
bc184cfbc55b780c468bc92729353f0213eca93f14b7645c760027ccd9c60bd3f5187bddc56dd54bd998ce3b4e8d51217536cf55f37dcd8103b8598013a6f23a

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/4376-23-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/5780-0-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download
memory/5780-1-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/5780-8-0x0000000002160000-0x0000000002166000-memory.dmp

Filesize
24KB

Download