lucastealer | 319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749

Analysis

max time kernel
27s
max time network
68s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
25-02-2023 22:26

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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

624 1140 WerFault.exe 319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

flow	ioc
3	ip-api.com

pid	pid_target	process	target process
624	1140	WerFault.exe	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

pid	process
1140	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
1140	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
1140	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
1140	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
1140	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe
1140	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

description pid process

Token: SeShutdownPrivilege 1140 319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

description	pid	process
Token: SeShutdownPrivilege	1140	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe

description	pid	process	target process
PID 1140 wrote to memory of 624	1140	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe	WerFault.exe
PID 1140 wrote to memory of 624	1140	319157bf510e966d20d5129f1966ece7cb18c2d3d781a31a95f0af3be5926749.exe	WerFault.exe
PID 1140 wrote to memory of 624	1140	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:1140

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -u -p 1140 -s 1096
2⤵
- Program crash
PID:624

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\logscx\sensfiles.zip
Filesize
5.8MB

MD5
9c717bff827bbb8351875c3643e9ce3b

SHA1
b2059c8c87e4aa9cf5b2b8f185000b154800435d

SHA256
8921d68a59f54a24f0c32f003a6a17e805418badc748696d11d799c22271429f

SHA512
c49ec0f2045117c322ea3ec8ad6e7726f255761687629ff4ac5bf1a0e55aba837b437c55fe2cdf513bf62641c8fbc96c1a0a60e66c47fe36379da793b212d324

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