Overview

overview

10

Static

static

10

build.exe

windows7-x64

10

build.exe

windows10-1703-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    136s
  • platform
    windows10-1703_x64
  • resource
    win10-20240404-en
  • resource tags

    arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system
  • submitted
    11/08/2024, 00:54

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General

  • Target

    build.exe

  • Size

    1.6MB

  • MD5

    ff6ccb1779a4746097c903cc4990cde9

  • SHA1

    6fafe17c197a7db965c0b54964e79007be4c59e4

  • SHA256

    615a6d34654e5f71fb42425485e13211a54dda151f901d30b09c6064edbd2102

  • SHA512

    0f980580a1b85efaebc8b0371325f74fc6d1c5a39d3a05dd141bfdb34837c8670c41db578ca0e15da06d27d19d273482c724031edfbe958d834646f067903d15

  • SSDEEP

    49152:JkTq24GjdGSiqkqXfd+/9AqYanieKdsB:J1EjdGSiqkqXf0FLYW

Score
10/10
stealeriumcollectioncredential_accessdiscoverypersistenceprivilege_escalationspywarestealer

Malware Config

Extracted

Family

stealerium

C2

https://discord.com/api/webhooks/1271994618187350106/NlTUFVTKg-sY-yt64wtu-kLBb-kh48Vr2qN8wrwwxhsKUHrF0qUb4nuI_FCeU5gNVv8o

Signatures

  • Stealerium

    An open source info stealer written in C# first seen in May 2022.

    stealerstealerium
  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

    credential_accessstealer
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
    collection
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Looks up external IP address via web service 1 IoCs

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

  • Drops file in Windows directory 2 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

    discovery
  • Event Triggered Execution: Netsh Helper DLL 1 TTPs 6 IoCs

    Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

    persistenceprivilege_escalation
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • System Network Configuration Discovery: Wi-Fi Discovery 1 TTPs 2 IoCs

    Adversaries may search for information about Wi-Fi networks, such as network names and passwords, on compromised systems.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of WriteProcessMemory 21 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\build.exe
    "C:\Users\Admin\AppData\Local\Temp\build.exe"
    1⤵
    • Accesses Microsoft Outlook profiles
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • outlook_office_path
    • outlook_win_path
    PID:4740
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show profile | findstr All
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Wi-Fi Discovery
      • Suspicious use of WriteProcessMemory
      PID:4160
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:1764
      • C:\Windows\SysWOW64\netsh.exe
        netsh wlan show profile
        3⤵
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Wi-Fi Discovery
        PID:2644
      • C:\Windows\SysWOW64\findstr.exe
        findstr All
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2632
    • C:\Windows\SysWOW64\cmd.exe
      "cmd.exe" /C chcp 65001 && netsh wlan show networks mode=bssid
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4924
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
        • System Location Discovery: System Language Discovery
        PID:3048
      • C:\Windows\SysWOW64\netsh.exe
        netsh wlan show networks mode=bssid
        3⤵
        • Event Triggered Execution: Netsh Helper DLL
        • System Location Discovery: System Language Discovery
        PID:3328
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4740 -s 2224
      2⤵
      • Program crash
      PID:2644
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:696
  • C:\Windows\system32\taskmgr.exe
    "C:\Windows\system32\taskmgr.exe" /4
    1⤵
    • Drops file in Windows directory
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:2444

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Browser Information Discovery

1
T1217

Peripheral Device Discovery

1
T1120

Query Registry

2
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

System Network Configuration Discovery

1
T1016

Wi-Fi Discovery

1
T1016.002

Lateral Movement

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Command and Control

Web Service

1
T1102

Exfiltration

Impact

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Downloads

  • C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\Browsers\Firefox\Bookmarks.txt
    Filesize

    105B

    MD5

    2e9d094dda5cdc3ce6519f75943a4ff4

    SHA1

    5d989b4ac8b699781681fe75ed9ef98191a5096c

    SHA256

    c84c98bbf5e0ef9c8d0708b5d60c5bb656b7d6be5135d7f7a8d25557e08cf142

    SHA512

    d1f7eed00959e902bdb2125b91721460d3ff99f3bdfc1f2a343d4f58e8d4e5e5a06c0c6cdc0379211c94510f7c00d7a8b34fa7d0ca0c3d54cbbe878f1e9812b7

    Download Submit

  • C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\Directories\OneDrive.txt
    Filesize

    25B

    MD5

    966247eb3ee749e21597d73c4176bd52

    SHA1

    1e9e63c2872cef8f015d4b888eb9f81b00a35c79

    SHA256

    8ddfc481b1b6ae30815ecce8a73755862f24b3bb7fdebdbf099e037d53eb082e

    SHA512

    bd30aec68c070e86e3dec787ed26dd3d6b7d33d83e43cb2d50f9e2cff779fee4c96afbbe170443bd62874073a844beb29a69b10c72c54d7d444a8d86cfd7b5aa

    Download Submit

  • C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\Directories\Startup.txt
    Filesize

    24B

    MD5

    68c93da4981d591704cea7b71cebfb97

    SHA1

    fd0f8d97463cd33892cc828b4ad04e03fc014fa6

    SHA256

    889ed51f9c16a4b989bda57957d3e132b1a9c117ee84e208207f2fa208a59483

    SHA512

    63455c726b55f2d4de87147a75ff04f2daa35278183969ccf185d23707840dd84363bec20d4e8c56252196ce555001ca0e61b3f4887d27577081fdef9e946402

    Download Submit

  • C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\Directories\Videos.txt
    Filesize

    23B

    MD5

    1fddbf1169b6c75898b86e7e24bc7c1f

    SHA1

    d2091060cb5191ff70eb99c0088c182e80c20f8c

    SHA256

    a67aa329b7d878de61671e18cd2f4b011d11cbac67ea779818c6dafad2d70733

    SHA512

    20bfeafde7fec1753fef59de467bd4a3dd7fe627e8c44e95fe62b065a5768c4508e886ec5d898e911a28cf6365f455c9ab1ebe2386d17a76f53037f99061fd4d

    Download Submit

  • C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\System\Apps.txt
    Filesize

    4KB

    MD5

    97bc566b727d95f13d10d76746c5738c

    SHA1

    e36fdfc8b68c7c52b07cbc9f6a6fb5a5167e29a6

    SHA256

    c1cb3d0696471301d735bef0bdb1739a3d0231854969daf3e0ab9913727612a4

    SHA512

    8d0ffce74642856c62363b661e108622b88f928e5ac11f1e800048dff7bcb208f31be15c8a368c4e364ff9303c89a355cfe350d59e0f3a6d47b87aa7f2f703a9

    Download Submit

  • C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\System\Debug.txt
    Filesize

    1KB

    MD5

    431ead9af8bdbe61a2494c3d8a57e51c

    SHA1

    ede4b6b55ccda539d49fca49dea9ecc77894a6de

    SHA256

    76fddee2f9d1ce21f3037536f95081e1d0f045f538b844713c3c885c16f6d2bc

    SHA512

    c585e37f3fb9749a176ed69460312decef3e78d96104999bad7feb7d8124dbd457c99ca35fe80c7fee9516dba5132258694646ef7b22c3ecc94b6f66d72facf3

    Download Submit

  • C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\System\Process.txt
    Filesize

    4KB

    MD5

    a27fd159123e6c0ffc57ad25602fd721

    SHA1

    ab0f00fec7d8bbfa13c9a18021721caf760fd54b

    SHA256

    00b447a73425e13ac1f35d9c2c52b74afeef1299861b9d7f100fadc528a0a893

    SHA512

    fdf0d449569e977dcdc60e6a734d3221a415b93237b8f82702d70bea917cf0fb7ddd545ec34cd86535a082f68a1cd5653c5e752e5db6cf20d573a44d14e80c24

    Download Submit

  • C:\Users\Admin\AppData\Local\569d1128b3ace97d312eff3743e5137e\Admin@FCXHTLHL_en-US\System\ProductKey.txt
    Filesize

    29B

    MD5

    71eb5479298c7afc6d126fa04d2a9bde

    SHA1

    a9b3d5505cf9f84bb6c2be2acece53cb40075113

    SHA256

    f6cadfd4e4c25ff3b8cffe54a2af24a757a349abbf4e1142ec4c9789347fe8b3

    SHA512

    7c6687e21d31ec1d6d2eff04b07b465f875fd80df26677f1506b14158444cf55044eb6674880bd5bd44f04ff73023b26cb19b8837427a1d6655c96df52f140bd

    Download Submit

  • memory/4740-8-0x0000000005BC0000-0x0000000005BE6000-memory.dmp

    Filesize

    152KB

    Download

  • memory/4740-162-0x0000000006BD0000-0x0000000006C4A000-memory.dmp

    Filesize

    488KB

    Download

  • memory/4740-11-0x0000000006AC0000-0x0000000006AC8000-memory.dmp

    Filesize

    32KB

    Download

  • memory/4740-53-0x0000000006E00000-0x0000000006E92000-memory.dmp

    Filesize

    584KB

    Download

  • memory/4740-59-0x00000000077C0000-0x0000000007CBE000-memory.dmp

    Filesize

    5.0MB

    Download

  • memory/4740-10-0x0000000006AB0000-0x0000000006ABA000-memory.dmp

    Filesize

    40KB

    Download

  • memory/4740-9-0x0000000005BF0000-0x0000000005BF8000-memory.dmp

    Filesize

    32KB

    Download

  • memory/4740-12-0x0000000006AE0000-0x0000000006AFE000-memory.dmp

    Filesize

    120KB

    Download

  • memory/4740-0-0x00000000733AE000-0x00000000733AF000-memory.dmp

    Filesize

    4KB

    Download

  • memory/4740-7-0x0000000005B30000-0x0000000005BC2000-memory.dmp

    Filesize

    584KB

    Download

  • memory/4740-3-0x00000000733A0000-0x0000000073A8E000-memory.dmp

    Filesize

    6.9MB

    Download

  • memory/4740-2-0x00000000055D0000-0x0000000005636000-memory.dmp

    Filesize

    408KB

    Download

  • memory/4740-1-0x0000000000C20000-0x0000000000DB2000-memory.dmp

    Filesize

    1.6MB

    Download

  • memory/4740-236-0x0000000006EB0000-0x0000000006F62000-memory.dmp

    Filesize

    712KB

    Download

  • memory/4740-238-0x00000000733A0000-0x0000000073A8E000-memory.dmp

    Filesize

    6.9MB

    Download