lucastealer | 319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749

Analysis

max time kernel
30s
max time network
71s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
24-02-2023 22:25

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General

Target

319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
Size

5.7MB
MD5

deb9c6e9c058071ebf52521065a75018
SHA1

d3f54b15504de1a55d26a5753f1254c5c42fadec
SHA256

319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749
SHA512

404d63f29db4b8edf4f5b73442e8e0c4dd58829b57bd2a75149d07acbd105cc9958429231f7f42dfb514824b62c7990d03913fbfd54d2e16273fd406e380be37
SSDEEP

49152:7Zg+YZ4PyxV4maKAUerq93kBis7q9mMts5lfarmNP78xMng+HEvLV+io6B5i5lSy:fFsaAnc6ZcIUk+r

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
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
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

3 ip-api.com
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

820 1376 WerFault.exe 319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

flow	ioc
3	ip-api.com

pid	pid_target	process	target process
820	1376	WerFault.exe	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

pid	process
1376	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
1376	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
1376	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
1376	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
1376	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
1376	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

description pid process

Token: SeShutdownPrivilege 1376 319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

description	pid	process
Token: SeShutdownPrivilege	1376	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

description	pid	process	target process
PID 1376 wrote to memory of 820	1376	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe	WerFault.exe
PID 1376 wrote to memory of 820	1376	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe	WerFault.exe
PID 1376 wrote to memory of 820	1376	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
"C:\Users\Admin\AppData\Local\Temp\319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1376
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1376 -s 1092
  2⤵
  - Program crash
  PID:820

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
6.6MB

MD5
2c5e3caa71cfdb2db4ec78f3d3812ad6

SHA1
78bffea62f4de055417e1155214ee5a74fd8d3ef

SHA256
e3d75ae94386634321951248736c75c96c31c1e16f02041548646e1b6ce8df5f

SHA512
fa75f9f4c914139669587bf3ac37dbff0ad344aa7a326b37b92be28baf1d282d6d8e00e56b88f65cc470f411d89cbf84d6728f5a11ab54a01a3538e325ed5d04

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