Malware Analysis Report

2025-01-22 12:56

Sample ID 241227-zbkvvazkfk
Target Flasher.exe
SHA256 989af492fa898868e67636bf47e06a7c5864f31849fc3b3a07b07e7a3a62d944
Tags
lucastealer credential_access execution spyware stealer
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

989af492fa898868e67636bf47e06a7c5864f31849fc3b3a07b07e7a3a62d944

Threat Level: Known bad

The file Flasher.exe was found to be: Known bad.

Malicious Activity Summary

lucastealer credential_access execution spyware stealer

Luca Stealer payload

Lucastealer family

Reads user/profile data of web browsers

Unsecured Credentials: Credentials In Files

Accesses cryptocurrency files/wallets, possible credential harvesting

Unsigned PE

Command and Scripting Interpreter: PowerShell

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-12-27 20:32

Signatures

Luca Stealer payload

Description Indicator Process Target
N/A N/A N/A N/A

Lucastealer family

lucastealer

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-12-27 20:32

Reported

2024-12-27 20:35

Platform

win7-20241023-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Flasher.exe"

Signatures

N/A

Processes

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

"C:\Users\Admin\AppData\Local\Temp\Flasher.exe"

Network

N/A

Files

N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-12-27 20:32

Reported

2024-12-27 20:35

Platform

win10v2004-20241007-en

Max time kernel

94s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\Flasher.exe"

Signatures

Reads user/profile data of web browsers

spyware stealer

Unsecured Credentials: Credentials In Files

credential_access stealer

Accesses cryptocurrency files/wallets, possible credential harvesting

spyware

Command and Scripting Interpreter: PowerShell

execution
Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3528 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\Flasher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 3528 wrote to memory of 1636 N/A C:\Users\Admin\AppData\Local\Temp\Flasher.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

Processes

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

"C:\Users\Admin\AppData\Local\Temp\Flasher.exe"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

"powershell.exe" -NoProfile -NonInteractive -NoLogo -Command "Get-Culture | Select -ExpandProperty DisplayName"

Network

Country Destination Domain Proto
US 8.8.8.8:53 ipwho.is udp
DE 195.201.57.90:443 ipwho.is tcp
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 90.57.201.195.in-addr.arpa udp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 88.210.23.2.in-addr.arpa udp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 68.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 53.210.109.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 22.49.80.91.in-addr.arpa udp
US 8.8.8.8:53 73.144.22.2.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 30.243.111.52.in-addr.arpa udp

Files

memory/1636-0-0x00007FF8A8573000-0x00007FF8A8575000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mpohhbk0.dzm.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/1636-9-0x0000020AA81D0000-0x0000020AA81F2000-memory.dmp

memory/1636-11-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp

memory/1636-12-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp

memory/1636-16-0x00007FF8A8570000-0x00007FF8A9031000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\chromium_default_webdata

MD5 a1eeb9d95adbb08fa316226b55e4f278
SHA1 b36e8529ac3f2907750b4fea7037b147fe1061a6
SHA256 2281f98b872ab5ad2d83a055f3802cbac4839f96584d27ea1fc3060428760ba7
SHA512 f26de5333cf4eaa19deb836db18a4303a8897bf88bf98bb78c6a6800badbaa7ab6aeb6444bbbe0e972a5332670bdbb474565da351f3b912449917be21af0afb8

C:\Users\Admin\AppData\Local\Temp\chromium_network_cookies

MD5 1204cf7b056c94ecb3a77ad8d82b11ee
SHA1 8c4a07ac980068bb2716f73d7d672fe74c13dd6e
SHA256 4637968fb88170f35a7c3310e529613a47d27d3620e7bd58ee0579e8613cc79a
SHA512 0cd417213c75b500e9e1e28edf27225e8f70fd5ab17c3885e6ea719a227bbcab5b9e5be3fb96e341308163282603d1080c97e848642d9a7cf4983bf0bdc07fe0

C:\Users\Admin\AppData\Local\Temp\chromium_default_login_data

MD5 a182561a527f929489bf4b8f74f65cd7
SHA1 8cd6866594759711ea1836e86a5b7ca64ee8911f
SHA256 42aad7886965428a941508b776a666a4450eb658cb90e80fae1e7457fc71f914
SHA512 9bc3bf5a82f6f057e873adebd5b7a4c64adef966537ab9c565fe7c4bb3582e2e485ff993d5ab8a6002363231958fabd0933b48811371b8c155eaa74592b66558

C:\Users\Admin\AppData\Local\Temp\bravesoftware_default_login_data

MD5 349e6eb110e34a08924d92f6b334801d
SHA1 bdfb289daff51890cc71697b6322aa4b35ec9169
SHA256 c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a
SHA512 2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

C:\Users\Admin\AppData\Local\Temp\yPXETKzDUCOwFbUBXyPhB98Gdprl9h\sensfiles.zip

MD5 5da9bde7207f7e9471a1ab65d1dd7e89
SHA1 1c340e1de413e28e410f0d5283f9490d614f625a
SHA256 1a3fd59b427ed1cdf3adaca5449178a1aab7ffe199dd72ffb52c3a205e2f16ba
SHA512 c6eb9447870e723522b2b0e47caad81755edbef76c231e32c89390787cb44691e2f627a70ef2eacbf6c415f96f09a6290126449547dc47960fb0e90dcc76ad12