03f1f0f23c35da6f3ec01c4684c305bb01168fa1666eed39138962f629b23191

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
21/05/2024, 15:31

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General

Target

2024-05-21_2dfe0b3b5741387f85a75759ee2fff0a_cryptolocker.exe
Size

35KB
MD5

2dfe0b3b5741387f85a75759ee2fff0a
SHA1

65fa3b1b3319c3ed47ee3d78e1e00b3419230e70
SHA256

03f1f0f23c35da6f3ec01c4684c305bb01168fa1666eed39138962f629b23191
SHA512

0cc0e0ab338a450a219a83ff67d5def6476876763e9316089e018e1d1ed1e3a790c5e7efbbc6bb737f50b4337749950e3e432e86f766827d28b9ee83c0f472eb
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Pp7i+:bxNrC7kYo1Fxf2rY1++

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023288-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	pissa.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-21_2dfe0b3b5741387f85a75759ee2fff0a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4516	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 2956 wrote to memory of 4516	2956	2024-05-21_2dfe0b3b5741387f85a75759ee2fff0a_cryptolocker.exe	84
PID 2956 wrote to memory of 4516	2956	2024-05-21_2dfe0b3b5741387f85a75759ee2fff0a_cryptolocker.exe	84
PID 2956 wrote to memory of 4516	2956	2024-05-21_2dfe0b3b5741387f85a75759ee2fff0a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-21_2dfe0b3b5741387f85a75759ee2fff0a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_2dfe0b3b5741387f85a75759ee2fff0a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2956
- 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:4516

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
02fdf1c4fb0228ba9ffb10a54fd9e9b5

SHA1
d4bc82c2d65d067e316574ff55348e3e30c1590c

SHA256
6d646294317539e9b840b637c622ed64dae95fdaf49cfb1185caa33fae721e67

SHA512
20b7d06da353d98b1514a64b93ee93d89536e233bfcef2bacdf084398300b736ec15af2e9c4cfe931a97c39db7afe4e380b4a2dc8621bca59d62d5e01d0bbe85

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

Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/2956-0-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/2956-1-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/2956-8-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download
memory/4516-17-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/4516-23-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download