lucastealer | b1c36bffcefa1ade3384c246959d37b651dffbd10cb7172b7c93a9bfecd29f89

Resubmissions

18-10-2023 09:56

231018-lykxgaed98 10

18-10-2023 09:43

231018-lqbntsed66 10

Analysis

max time kernel
140s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
18-10-2023 09:43

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General

Target

rust-stealer-xss.exe
Size

4.5MB
MD5

3ddf7d19049c63bdfd526de82ca592c1
SHA1

852dddd3a28ee5c6949bba4c76a4bfe116c903ba
SHA256

b1c36bffcefa1ade3384c246959d37b651dffbd10cb7172b7c93a9bfecd29f89
SHA512

7be04fed529a3bcbd490cf10549e1439089ba38cd70f7def6b097656c3f3a9c5bf4809f8ddc4b58430ad72e55a9bd367dc4695affa0017c4e6f391ff3318fadb
SSDEEP

98304:hQDi99hkY8zFbsEqy9wvDC1C/eFFYKkjsDTtqK3+5A:ODi99hgqLCSmkjWd0A

Score

10^/10

lucastealer spyware stealer

Malware Config

Signatures

Luca Stealer
Info stealer written in Rust first seen in July 2022.
stealer lucastealer
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials In Files
T1552.001

Enumerates connected drives 3 TTPs 1 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

rust-stealer-xss.exe

description	ioc	Process
File opened (read-only)	\??\F:	rust-stealer-xss.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow	ioc
14	ip-api.com

Program crash 1 IoCs

Processes:

WerFault.exe

pid	pid_target	Process	procid_target
4832	560	WerFault.exe	82

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

rust-stealer-xss.exe

pid	Process
560	rust-stealer-xss.exe
560	rust-stealer-xss.exe
560	rust-stealer-xss.exe
560	rust-stealer-xss.exe
560	rust-stealer-xss.exe
560	rust-stealer-xss.exe

C:\Users\Admin\AppData\Local\Temp\rust-stealer-xss.exe
"C:\Users\Admin\AppData\Local\Temp\rust-stealer-xss.exe"
1⤵
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
PID:560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 560 -s 1720
  2⤵
  - Program crash
  PID:4832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 560 -ip 560
1⤵
PID:3000

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\logscx\sensfiles.zip

Filesize
2.8MB

MD5
94fa5c97edd6cfc5e2782825030ad1cc

SHA1
7d8669a6696a8d69d77d8385c7660c5162b0887e

SHA256
cbdb9bc7b742dcbcb6e8f0b3dfb0ad8ebe9b33e9d0e0c5bc12bee033403925a9

SHA512
451b26c7e78be57bba0d6ca35c2f69e8d55561b6b05e855391296529c8f1cc79bb422f11f93da02998ec8ce34568cf85a712f92729d580f93ecebacab9d7d0c6

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