Analysis

  • max time kernel
    147s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-03-2024 02:27

General

  • Target

    91928cff02a35939c073e174ad69542f10ac4465bcab0db2093214820d2828a2.exe

  • Size

    1.8MB

  • MD5

    fd9fbcb76e82f43fcefc978edb2d5401

  • SHA1

    98c4f77fb8dd309d1f3db8a8f7970f4844103860

  • SHA256

    91928cff02a35939c073e174ad69542f10ac4465bcab0db2093214820d2828a2

  • SHA512

    de46089afff05a726ee7b8e8bbaf2fb22e0c21eb21dfb5ea4c8b95bd813ef710cb5147dae65fb132b1c0233ea6040ef510f8187e23f8acb1d95566a0de1d0c8b

  • SSDEEP

    24576:SgfjathaJi3PqCva0PouhtwQh7IWRZ2YABxaSSrSIQD7XfCvE/llYwYNItNEv:7bhJSly0P5tdkYYfiifgENaw3t

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\91928cff02a35939c073e174ad69542f10ac4465bcab0db2093214820d2828a2.exe
    "C:\Users\Admin\AppData\Local\Temp\91928cff02a35939c073e174ad69542f10ac4465bcab0db2093214820d2828a2.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:232
  • 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:2236
    • 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:1592
      • 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:4408
        • C:\Windows\system32\netsh.exe
          netsh wlan show profiles
          4⤵
            PID:5092
          • 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\045580317372_Desktop.zip' -CompressionLevel Optimal
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3116
      • 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:4388

    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

      1.7MB

      MD5

      db907c027a1ea3490dc896ddea9d2af0

      SHA1

      84e737cf78a9af356b30d2e7d802adf783b552f5

      SHA256

      f472eb4f2c05584628facac552ef5878a3fb1904c030b634944b99588095a5ea

      SHA512

      355e16d0d70a2123b402ccfed9ec1a22864cecdf714dd9be25d83191a9031c697728de483321aee62015026803840430f98c57f567d919fe3c74fcd2489ea9af

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

      256KB

      MD5

      410388a2e38ff9ef5ddbaeba8315f642

      SHA1

      e5f713bf5a5a8620688993d6fc98a615392bafd7

      SHA256

      9444fa75c911f4e0a30095a26705f6583f5ddb61f7d5ef50e8b8a06e7168b931

      SHA512

      b0ae0ca377781bb12c6a62955509c4d854bc346fd34563394408f8f92998198a4312dec406bf021e652b54a03296e941dbfe6f01162d7aedb5a82f726d7d5d56

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1og3lgro.asi.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/232-6-0x0000000005550000-0x0000000005551000-memory.dmp
      Filesize

      4KB

    • memory/232-5-0x0000000005510000-0x0000000005511000-memory.dmp
      Filesize

      4KB

    • memory/232-7-0x00000000054F0000-0x00000000054F1000-memory.dmp
      Filesize

      4KB

    • memory/232-8-0x0000000005500000-0x0000000005501000-memory.dmp
      Filesize

      4KB

    • memory/232-9-0x0000000005570000-0x0000000005571000-memory.dmp
      Filesize

      4KB

    • memory/232-14-0x0000000000F90000-0x000000000144A000-memory.dmp
      Filesize

      4.7MB

    • memory/232-4-0x0000000005530000-0x0000000005531000-memory.dmp
      Filesize

      4KB

    • memory/232-0-0x0000000000F90000-0x000000000144A000-memory.dmp
      Filesize

      4.7MB

    • memory/232-3-0x0000000005520000-0x0000000005521000-memory.dmp
      Filesize

      4KB

    • memory/232-2-0x0000000000F90000-0x000000000144A000-memory.dmp
      Filesize

      4.7MB

    • memory/232-1-0x0000000077814000-0x0000000077816000-memory.dmp
      Filesize

      8KB

    • memory/2236-27-0x0000000005160000-0x0000000005161000-memory.dmp
      Filesize

      4KB

    • memory/2236-79-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-19-0x0000000005110000-0x0000000005111000-memory.dmp
      Filesize

      4KB

    • memory/2236-24-0x00000000050F0000-0x00000000050F1000-memory.dmp
      Filesize

      4KB

    • memory/2236-23-0x0000000005100000-0x0000000005101000-memory.dmp
      Filesize

      4KB

    • memory/2236-25-0x0000000005140000-0x0000000005141000-memory.dmp
      Filesize

      4KB

    • memory/2236-26-0x0000000005170000-0x0000000005171000-memory.dmp
      Filesize

      4KB

    • memory/2236-22-0x00000000050E0000-0x00000000050E1000-memory.dmp
      Filesize

      4KB

    • memory/2236-28-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-20-0x0000000005120000-0x0000000005121000-memory.dmp
      Filesize

      4KB

    • memory/2236-41-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-18-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-87-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-86-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-85-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-84-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-83-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-82-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-81-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-63-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-64-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-17-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-76-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-77-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-78-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/2236-21-0x0000000005150000-0x0000000005151000-memory.dmp
      Filesize

      4KB

    • memory/2236-80-0x0000000000970000-0x0000000000E2A000-memory.dmp
      Filesize

      4.7MB

    • memory/3116-62-0x00007FF97CF90000-0x00007FF97DA51000-memory.dmp
      Filesize

      10.8MB

    • memory/3116-56-0x000002016A910000-0x000002016A91A000-memory.dmp
      Filesize

      40KB

    • memory/3116-55-0x000002016A930000-0x000002016A942000-memory.dmp
      Filesize

      72KB

    • memory/3116-54-0x0000020168400000-0x0000020168410000-memory.dmp
      Filesize

      64KB

    • memory/3116-53-0x0000020168400000-0x0000020168410000-memory.dmp
      Filesize

      64KB

    • memory/3116-52-0x00007FF97CF90000-0x00007FF97DA51000-memory.dmp
      Filesize

      10.8MB

    • memory/3116-47-0x000002016A580000-0x000002016A5A2000-memory.dmp
      Filesize

      136KB