Analysis

  • max time kernel
    147s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2024 23:34

General

  • Target

    bfa445e1f0447b0634242f1e3118004f3a04fd23a8db560e67de229f709a6385.exe

  • Size

    1.8MB

  • MD5

    da3a4922260236756281fd86faee9f41

  • SHA1

    c3e479cd6cf9bbc27a090ac448e02f3baa4ad359

  • SHA256

    bfa445e1f0447b0634242f1e3118004f3a04fd23a8db560e67de229f709a6385

  • SHA512

    bb844606c9280a8c9c8fa6e7934ec1f711f7aa37c5ad381f2e8318433d05f5c6c09cdb3bb7190d223f9cc037502be138fdd8bce1bf293eb6f75454bdd06f5eba

  • SSDEEP

    49152:68msgNotrCH2v7UooOLf5k5fYE9Kw5ODE7BFQxXwo:9yJWvobOTiYcWE7YXw

Malware Config

Extracted

Family

amadey

Version

4.17

C2

http://185.215.113.32

Attributes
  • install_dir

    00c07260dc

  • install_file

    explorgu.exe

  • strings_key

    461809bd97c251ba0c0c8450c7055f1d

  • url_paths

    /yandex/index.php

rc4.plain

Signatures

  • Amadey

    Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
  • Blocklisted process makes network request 2 IoCs
  • Downloads MZ/PE file
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Identifies Wine through registry keys 2 TTPs 2 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 3 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bfa445e1f0447b0634242f1e3118004f3a04fd23a8db560e67de229f709a6385.exe
    "C:\Users\Admin\AppData\Local\Temp\bfa445e1f0447b0634242f1e3118004f3a04fd23a8db560e67de229f709a6385.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    PID:1944
  • C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe
    C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Checks computer location settings
    • Executes dropped EXE
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3136
    • C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2752
      • C:\Windows\system32\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll, Main
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4380
        • C:\Windows\system32\netsh.exe
          netsh wlan show profiles
          4⤵
            PID:2524
          • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
            powershell -Command Compress-Archive -Path 'C:\Users\Admin\AppData\Local\Temp\_Files_\' -DestinationPath 'C:\Users\Admin\AppData\Local\Temp\497073144238_Desktop.zip' -CompressionLevel Optimal
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1424
      • C:\Windows\SysWOW64\rundll32.exe
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\006700e5a2ab05\clip64.dll, Main
        2⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        PID:4944

    Network

    MITRE ATT&CK Matrix ATT&CK v13

    Defense Evasion

    Virtualization/Sandbox Evasion

    2
    T1497

    Credential Access

    Unsecured Credentials

    3
    T1552

    Credentials In Files

    2
    T1552.001

    Credentials in Registry

    1
    T1552.002

    Discovery

    Query Registry

    4
    T1012

    Virtualization/Sandbox Evasion

    2
    T1497

    System Information Discovery

    3
    T1082

    Collection

    Data from Local System

    3
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe
      Filesize

      1.8MB

      MD5

      da3a4922260236756281fd86faee9f41

      SHA1

      c3e479cd6cf9bbc27a090ac448e02f3baa4ad359

      SHA256

      bfa445e1f0447b0634242f1e3118004f3a04fd23a8db560e67de229f709a6385

      SHA512

      bb844606c9280a8c9c8fa6e7934ec1f711f7aa37c5ad381f2e8318433d05f5c6c09cdb3bb7190d223f9cc037502be138fdd8bce1bf293eb6f75454bdd06f5eba

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1x2vbf1v.34d.ps1
      Filesize

      60B

      MD5

      d17fe0a3f47be24a6453e9ef58c94641

      SHA1

      6ab83620379fc69f80c0242105ddffd7d98d5d9d

      SHA256

      96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

      SHA512

      5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

    • C:\Users\Admin\AppData\Roaming\006700e5a2ab05\clip64.dll
      Filesize

      109KB

      MD5

      2afdbe3b99a4736083066a13e4b5d11a

      SHA1

      4d4856cf02b3123ac16e63d4a448cdbcb1633546

      SHA256

      8d31b39170909595b518b1a03e9ec950540fabd545ed14817cac5c84b91599ee

      SHA512

      d89b3c46854153e60e3fa825b394344eee33936d7dbf186af9d95c9adae54428609e3bf21a18d38fce3d96f3e0b8e4e0ed25cb5004fbe288de3aef3a85b1d93f

    • C:\Users\Admin\AppData\Roaming\006700e5a2ab05\cred64.dll
      Filesize

      1.2MB

      MD5

      92fbdfccf6a63acef2743631d16652a7

      SHA1

      971968b1378dd89d59d7f84bf92f16fc68664506

      SHA256

      b4588feacc183cd5a089f9bb950827b75df04bd5a6e67c95ff258e4a34aa0d72

      SHA512

      b8ea216d4a59d8858fd4128abb555f8dcf3acca9138e663b488f09dc5200db6dc11ecc235a355e801145bbbb44d7beac6147949d75d78b32fe9cfd2fa200d117

    • memory/1424-56-0x0000024B1FBE0000-0x0000024B1FBEA000-memory.dmp
      Filesize

      40KB

    • memory/1424-62-0x00007FFCAEFD0000-0x00007FFCAFA91000-memory.dmp
      Filesize

      10.8MB

    • memory/1424-52-0x0000024B1FAA0000-0x0000024B1FAB0000-memory.dmp
      Filesize

      64KB

    • memory/1424-55-0x0000024B20070000-0x0000024B20082000-memory.dmp
      Filesize

      72KB

    • memory/1424-53-0x0000024B1FAA0000-0x0000024B1FAB0000-memory.dmp
      Filesize

      64KB

    • memory/1424-46-0x0000024B1FAB0000-0x0000024B1FAD2000-memory.dmp
      Filesize

      136KB

    • memory/1424-51-0x00007FFCAEFD0000-0x00007FFCAFA91000-memory.dmp
      Filesize

      10.8MB

    • memory/1944-15-0x0000000000D80000-0x0000000001240000-memory.dmp
      Filesize

      4.8MB

    • memory/1944-7-0x0000000005250000-0x0000000005251000-memory.dmp
      Filesize

      4KB

    • memory/1944-10-0x00000000052B0000-0x00000000052B1000-memory.dmp
      Filesize

      4KB

    • memory/1944-9-0x00000000052C0000-0x00000000052C1000-memory.dmp
      Filesize

      4KB

    • memory/1944-3-0x0000000005260000-0x0000000005261000-memory.dmp
      Filesize

      4KB

    • memory/1944-0-0x0000000000D80000-0x0000000001240000-memory.dmp
      Filesize

      4.8MB

    • memory/1944-8-0x0000000005240000-0x0000000005241000-memory.dmp
      Filesize

      4KB

    • memory/1944-5-0x0000000005290000-0x0000000005291000-memory.dmp
      Filesize

      4KB

    • memory/1944-6-0x0000000005230000-0x0000000005231000-memory.dmp
      Filesize

      4KB

    • memory/1944-1-0x0000000077274000-0x0000000077276000-memory.dmp
      Filesize

      8KB

    • memory/1944-2-0x0000000000D80000-0x0000000001240000-memory.dmp
      Filesize

      4.8MB

    • memory/1944-4-0x0000000005270000-0x0000000005271000-memory.dmp
      Filesize

      4KB

    • memory/3136-19-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-22-0x0000000004FB0000-0x0000000004FB1000-memory.dmp
      Filesize

      4KB

    • memory/3136-82-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-28-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-27-0x0000000004FD0000-0x0000000004FD1000-memory.dmp
      Filesize

      4KB

    • memory/3136-26-0x0000000004FE0000-0x0000000004FE1000-memory.dmp
      Filesize

      4KB

    • memory/3136-25-0x0000000004F60000-0x0000000004F61000-memory.dmp
      Filesize

      4KB

    • memory/3136-54-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-23-0x0000000004F50000-0x0000000004F51000-memory.dmp
      Filesize

      4KB

    • memory/3136-24-0x0000000004F70000-0x0000000004F71000-memory.dmp
      Filesize

      4KB

    • memory/3136-20-0x0000000004F90000-0x0000000004F91000-memory.dmp
      Filesize

      4KB

    • memory/3136-63-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-64-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-86-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-76-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-77-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-78-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-79-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-80-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-81-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-21-0x0000000004F80000-0x0000000004F81000-memory.dmp
      Filesize

      4KB

    • memory/3136-83-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-84-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-85-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-18-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB

    • memory/3136-87-0x00000000005B0000-0x0000000000A70000-memory.dmp
      Filesize

      4.8MB