728608f35e20ae7f0c7952b39e7a51458a864f43b8a44055b525d4b9ef325259

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 06:10

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-02-13_c8c1a99236a4948e22d2cdc0b0e5ffec_cryptolocker.exe
Size

36KB
MD5

c8c1a99236a4948e22d2cdc0b0e5ffec
SHA1

b7fc0d4fa691a9d69fb52f0a42f70ce560b59a7d
SHA256

728608f35e20ae7f0c7952b39e7a51458a864f43b8a44055b525d4b9ef325259
SHA512

204fb06fe0493d5a9e7f4882c08b048b2e9d0036b6461ea172bc42755c12eb65d7c8337c338f3ef0d774a2e1166c64e07853782cefdb348dad6089b07ccada7c
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx3q:bxNrC7kYo1Fxf3s06go

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231f4-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-13_c8c1a99236a4948e22d2cdc0b0e5ffec_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
544	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 3664 wrote to memory of 544	3664	2024-02-13_c8c1a99236a4948e22d2cdc0b0e5ffec_cryptolocker.exe	86
PID 3664 wrote to memory of 544	3664	2024-02-13_c8c1a99236a4948e22d2cdc0b0e5ffec_cryptolocker.exe	86
PID 3664 wrote to memory of 544	3664	2024-02-13_c8c1a99236a4948e22d2cdc0b0e5ffec_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-13_c8c1a99236a4948e22d2cdc0b0e5ffec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_c8c1a99236a4948e22d2cdc0b0e5ffec_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3664
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:544

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\pissa.exe

Filesize
36KB

MD5
293ccca2771cb695466ff77ad7dcca2e

SHA1
b21fb93d7e0af4740880b68fcb8de1ca0db11ad3

SHA256
d19252e5ce93d788ac120346d9b16267df83b79d9b0428303e576ddd2ba10b85

SHA512
f41943b44eb97558d9f05416db93a2525c07fe74a5b3b7ffd074e2615467f740b75a99f0ac69ea7f8b47a661cde579dd3e39af0a76d67c7cd263a1d53753f8e6

Download Submit
memory/544-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/544-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/3664-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3664-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/3664-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download