Resubmissions

23-03-2024 21:20

240323-z65hqsfb3v 10

23-03-2024 18:28

240323-w4fj2saf53 10

Analysis

  • max time kernel
    145s
  • max time network
    156s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23-03-2024 18:28

General

  • Target

    1d2c2bfb291003b0b4f4dbfa44f2eb7f7d202f014af9bec29d256e8b759e0c28.exe

  • Size

    1.8MB

  • MD5

    836561d85ffe41d7e5ea8de57b6c8587

  • SHA1

    280411301a25940e01c2d5362bcba174220feadd

  • SHA256

    1d2c2bfb291003b0b4f4dbfa44f2eb7f7d202f014af9bec29d256e8b759e0c28

  • SHA512

    78ccd609213becae6ebc2d1ee93c1285e0901e1e23ef591ae8acc69e38c75f90543b9b5c854626000efa7f3dc19e6ddee4343d760babbe69077252051155fd86

  • SSDEEP

    24576:ec9IgkmS8Ts6k9snWmUNTn6lEt2r2eksy6MJQpWYNkmYPee+VxYpUbhasbcHeIzc:eiIgg8Tsd05qta24NkbfXiaX5Hsm1

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.

  • 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 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1d2c2bfb291003b0b4f4dbfa44f2eb7f7d202f014af9bec29d256e8b759e0c28.exe
    "C:\Users\Admin\AppData\Local\Temp\1d2c2bfb291003b0b4f4dbfa44f2eb7f7d202f014af9bec29d256e8b759e0c28.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
    • Suspicious use of FindShellTrayWindow
    PID:5092
  • 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
    • Executes dropped EXE
    • Identifies Wine through registry keys
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2424
    • 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:2884
      • 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:3492
        • C:\Windows\system32\netsh.exe
          netsh wlan show profiles
          4⤵
            PID:2640
          • 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\271347359027_Desktop.zip' -CompressionLevel Optimal
            4⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:988
      • 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:1392

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

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

      Filesize

      1.8MB

      MD5

      836561d85ffe41d7e5ea8de57b6c8587

      SHA1

      280411301a25940e01c2d5362bcba174220feadd

      SHA256

      1d2c2bfb291003b0b4f4dbfa44f2eb7f7d202f014af9bec29d256e8b759e0c28

      SHA512

      78ccd609213becae6ebc2d1ee93c1285e0901e1e23ef591ae8acc69e38c75f90543b9b5c854626000efa7f3dc19e6ddee4343d760babbe69077252051155fd86

    • C:\Users\Admin\AppData\Local\Temp\271347359027_Desktop.zip

      Filesize

      199KB

      MD5

      0efe9d1bc9f4cbb6dc848b1beb1e5649

      SHA1

      40beb92b2254e0b3f66d2f66593c4bb95fcbe538

      SHA256

      9f6af8803337ee4d46e8c36aa72300bf4308723657660b486917465ec3343e78

      SHA512

      744a7bd443631e2d1ce450948389f7a8cf81cc1e5081dc6434b17833bf2e6e252e5cfa942cf1a5c8ebac5e12794355418a841e4b5dca015d6b527fd76d3dd34e

    • C:\Users\Admin\AppData\Local\Temp\_Files_\GetGroup.txt

      Filesize

      199KB

      MD5

      97d77e8f4f75adca25701ff91364f95a

      SHA1

      75ac9edff7d97d793680743f9774c5eaf18bcbda

      SHA256

      8506dee4809f7ab7b1e4304ed4d373e1cd6013a1a473220b569196ed3ceb5865

      SHA512

      1e1005d038c0c4af2d80313aa5d2a0c13745d90abb2dea070df2abf6ec21ae79873dfd9a323566cdd362cffda52de9e57e3ccba2d97711fefc0cf6afac3c7eb3

    • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0l2srlet.0ck.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/988-55-0x00000157D3050000-0x00000157D3062000-memory.dmp

      Filesize

      72KB

    • memory/988-54-0x00000157D2EE0000-0x00000157D2EF0000-memory.dmp

      Filesize

      64KB

    • memory/988-52-0x00000157D2EE0000-0x00000157D2EF0000-memory.dmp

      Filesize

      64KB

    • memory/988-51-0x00000157D2EE0000-0x00000157D2EF0000-memory.dmp

      Filesize

      64KB

    • memory/988-50-0x00007FF9BEAF0000-0x00007FF9BF5B2000-memory.dmp

      Filesize

      10.8MB

    • memory/988-56-0x00000157D2F40000-0x00000157D2F4A000-memory.dmp

      Filesize

      40KB

    • memory/988-61-0x00007FF9BEAF0000-0x00007FF9BF5B2000-memory.dmp

      Filesize

      10.8MB

    • memory/988-46-0x00000157D2EB0000-0x00000157D2ED2000-memory.dmp

      Filesize

      136KB

    • memory/2424-17-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-76-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-19-0x00000000055C0000-0x00000000055C1000-memory.dmp

      Filesize

      4KB

    • memory/2424-22-0x00000000055F0000-0x00000000055F1000-memory.dmp

      Filesize

      4KB

    • memory/2424-23-0x0000000005590000-0x0000000005591000-memory.dmp

      Filesize

      4KB

    • memory/2424-24-0x00000000055A0000-0x00000000055A1000-memory.dmp

      Filesize

      4KB

    • memory/2424-26-0x0000000005600000-0x0000000005601000-memory.dmp

      Filesize

      4KB

    • memory/2424-25-0x0000000005610000-0x0000000005611000-memory.dmp

      Filesize

      4KB

    • memory/2424-27-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-21-0x00000000055B0000-0x00000000055B1000-memory.dmp

      Filesize

      4KB

    • memory/2424-18-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-84-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-83-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-82-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-81-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-53-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-80-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-79-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-78-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-77-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-20-0x00000000055D0000-0x00000000055D1000-memory.dmp

      Filesize

      4KB

    • memory/2424-64-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/2424-63-0x0000000000360000-0x0000000000822000-memory.dmp

      Filesize

      4.8MB

    • memory/5092-2-0x0000000000C00000-0x00000000010C2000-memory.dmp

      Filesize

      4.8MB

    • memory/5092-1-0x00000000772A6000-0x00000000772A8000-memory.dmp

      Filesize

      8KB

    • memory/5092-4-0x00000000057F0000-0x00000000057F1000-memory.dmp

      Filesize

      4KB

    • memory/5092-3-0x00000000057E0000-0x00000000057E1000-memory.dmp

      Filesize

      4KB

    • memory/5092-5-0x00000000057D0000-0x00000000057D1000-memory.dmp

      Filesize

      4KB

    • memory/5092-6-0x0000000005810000-0x0000000005811000-memory.dmp

      Filesize

      4KB

    • memory/5092-7-0x00000000057B0000-0x00000000057B1000-memory.dmp

      Filesize

      4KB

    • memory/5092-8-0x00000000057C0000-0x00000000057C1000-memory.dmp

      Filesize

      4KB

    • memory/5092-9-0x0000000005830000-0x0000000005831000-memory.dmp

      Filesize

      4KB

    • memory/5092-14-0x0000000000C00000-0x00000000010C2000-memory.dmp

      Filesize

      4.8MB

    • memory/5092-0-0x0000000000C00000-0x00000000010C2000-memory.dmp

      Filesize

      4.8MB