lucastealer | 12b10654f5c1372ce656c951448a75f72d25c28cda867c7fa1daf4d81760759b

Resubmissions

01-12-2022 16:35

221201-t36nqsbf2v 10

26-11-2022 19:28

221126-x6mxkshd49 10

Analysis

max time kernel
90s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2022 16:35

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General

Target

c82fa54ea87c77df522b4f7acd0f864a.exe
Size

2.4MB
MD5

c82fa54ea87c77df522b4f7acd0f864a
SHA1

6e68b52b6155efdd63b02914b672c689ce5c4ceb
SHA256

12b10654f5c1372ce656c951448a75f72d25c28cda867c7fa1daf4d81760759b
SHA512

08e1b9ed9cf95800373d6c8f7bfc6c85254043d70ea782ecb91c01d7b1bc2188fbcc2affcbce9f7e356a493aee940969e4561c989508c9f8bba352a0891899f2
SSDEEP

49152:ExHZLf07ypvu3LkxlMkevAQOhq1UBGofNTVm2hg82wB7EGf6t6+FLekMkN69n:wHFBu4qkevA3hnBrlRDgIB7XfuFLegN

Score

10^/10

lucastealer spyware stealer upx

Malware Config

Extracted

Family

lucastealer

https://discord.com/api/webhooks/1039311547425640518/lMmTqbPugNDu_ZDCwjwcSOibAKdac1rSgQqQo7l7aXWncfJ-97uDFaBWLcbvbe0npp3B

Signatures

Luca Stealer
Info stealer written in Rust first seen in July 2022.
stealer lucastealer

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/4936-132-0x00007FF70A6D0000-0x00007FF70AC57000-memory.dmp	upx
behavioral2/memory/4936-133-0x00007FF70A6D0000-0x00007FF70AC57000-memory.dmp	upx

Deletes itself 1 IoCs

Processes:

c82fa54ea87c77df522b4f7acd0f864a.exe

pid process

4936 c82fa54ea87c77df522b4f7acd0f864a.exe
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
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

11 ip-api.com
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4780 4936 WerFault.exe c82fa54ea87c77df522b4f7acd0f864a.exe

flow	ioc
11	ip-api.com

pid	pid_target	process	target process
4780	4936	WerFault.exe	c82fa54ea87c77df522b4f7acd0f864a.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

c82fa54ea87c77df522b4f7acd0f864a.exe

pid	process
4936	c82fa54ea87c77df522b4f7acd0f864a.exe
4936	c82fa54ea87c77df522b4f7acd0f864a.exe
4936	c82fa54ea87c77df522b4f7acd0f864a.exe
4936	c82fa54ea87c77df522b4f7acd0f864a.exe
4936	c82fa54ea87c77df522b4f7acd0f864a.exe
4936	c82fa54ea87c77df522b4f7acd0f864a.exe

Suspicious behavior: RenamesItself 1 IoCs

Processes:

c82fa54ea87c77df522b4f7acd0f864a.exe

pid process

4936 c82fa54ea87c77df522b4f7acd0f864a.exe

C:\Users\Admin\AppData\Local\Temp\c82fa54ea87c77df522b4f7acd0f864a.exe
"C:\Users\Admin\AppData\Local\Temp\c82fa54ea87c77df522b4f7acd0f864a.exe"
1⤵
- Deletes itself
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
PID:4936
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 4936 -s 1560
  2⤵
  - Program crash
  PID:4780

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 476 -p 4936 -ip 4936
1⤵
PID:2744

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4936-132-0x00007FF70A6D0000-0x00007FF70AC57000-memory.dmp

Filesize
5.5MB

Download
memory/4936-133-0x00007FF70A6D0000-0x00007FF70AC57000-memory.dmp

Filesize
5.5MB

Download