Analysis

  • max time kernel
    149s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/07/2024, 14:21

General

  • Target
    Proforma invoice of dated 17072024.exe
  • Size 1009KB
  • Sample240717-rn847svarm
  • SHA256 003a945d2e248c12dd520fe056a88779dfba87cd22a92ad98afa3fc955f5e01f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • asyncrat

Version
  • Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet
  • Default

C2
  • 194.55.186.155:2424

Mutex
  • qncatmcnnrwluo

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

    AsyncRAT is designed to remotely monitor and control other computers written in C#.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Gathers network information 2 TTPs 2 IoCs

    Uses commandline utility to view network configuration.

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 26 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Proforma invoice of dated 17072024.exe
    "C:\Users\Admin\AppData\Local\Temp\Proforma invoice of dated 17072024.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:768
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\RarSFX0\lobw.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:1432
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c ipconfig /release
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:840
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /release
          4⤵
          • Gathers network information
          PID:3368
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c efcrtwcqga.txt deeddrm.jpg
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2800
        • C:\Users\Admin\AppData\Local\Temp\RarSFX0\efcrtwcqga.txt
          efcrtwcqga.txt deeddrm.jpg
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:2712
          • C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
            "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:924
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c ipconfig /renew
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3880
        • C:\Windows\SysWOW64\ipconfig.exe
          ipconfig /renew
          4⤵
          • Gathers network information
          PID:4360

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        aqoirssb.msc

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\aqoirssb.msc
        • Size 571B
        • SHA256 2eb2ccc0ef33b2e4863258715690b83d942018bd807512835c35f014ceda5f54
        • MD5 SHA1 SHA512

        bbhwnlxe.mp2

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\bbhwnlxe.mp2
        • Size 610B
        • SHA256 437d854fa04dbaf3f36575e065c92467795f3503f18fc50385f06e1640729ac1
        • MD5 SHA1 SHA512

        buwfoq.mp2

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\buwfoq.mp2
        • Size 582B
        • SHA256 8623a860e7b011cce4d5f9795fe26027da7e37703239daf21ddcbc57315a9f51
        • MD5 SHA1 SHA512

        citaur.icm

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\citaur.icm
        • Size 582B
        • SHA256 779e97485923618d19d8e9d247cec94200dcec910b63834bd4fc23cf4ab8256d
        • MD5 SHA1 SHA512

        dtkd.bin

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\dtkd.bin
        • Size 522B
        • SHA256 8e891805bb03fc28c46aa528d1463cdcec1f0b8b8cf4a09331a682ceb8722dcd
        • MD5 SHA1 SHA512

        dtxqvfi.qsn

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\dtxqvfi.qsn
        • Size 126KB
        • SHA256 c23e5320082d7c680bafe0e1c168f63629ff7bf00cce1e722f6c17b872398345
        • MD5 SHA1 SHA512 SSDEEP

        ebcwxfolbo.icm

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\ebcwxfolbo.icm
        • Size 531B
        • SHA256 4bfb6674109ed55fdbe951e88acc59b19202801de5dcfc42ce4b17be301cb341
        • MD5 SHA1 SHA512

        efcrtwcqga.txt

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\efcrtwcqga.txt
        • Size 880KB
        • SHA256 7972c56b8e4436f6a0ead86511625ff84a605389a447417485fccbe064b3c211
        • MD5 SHA1 SHA512 SSDEEP

        ejducla.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\ejducla.ppt
        • Size 512B
        • SHA256 bd3ab0bfafcc104ed7d5b9c4ca969aad05a19707a7ad34401ccbe3b0d437aa8a
        • MD5 SHA1 SHA512

        hmulc.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\hmulc.mp3
        • Size 653B
        • SHA256 dd1a6cbf6e012a5a397857aa78603abcd2e93c540fd3126d37c0403939c70da3
        • MD5 SHA1 SHA512

        itjixqser.icm

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\itjixqser.icm
        • Size 529B
        • SHA256 405adf33dffe403db4cc9336c442f09ff348084b771c42cfc4e0b94b2aa0146f
        • MD5 SHA1 SHA512

        kebm.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\kebm.exe
        • Size 540B
        • SHA256 d48fc81c2e91a75dd7e13ee9ab501e5ac39a13b196bcfe64b71e88297896b514
        • MD5 SHA1 SHA512

        kerbfiuttw.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\kerbfiuttw.ppt
        • Size 594B
        • SHA256 c35ffc17bf55d904d312bd5a28f80ab01804f65b0502196dafbb97b4dfa3c24e
        • MD5 SHA1 SHA512

        lobw.vbe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\lobw.vbe
        • Size 65KB
        • SHA256 fd25b764547d6cd317e5b5ff29adb5fad84d07035934cb28a4075719fa28a4d5
        • MD5 SHA1 SHA512 SSDEEP

        lphkrgq.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\lphkrgq.exe
        • Size 592B
        • SHA256 5e1e3a2ffdaaf15a63c2df6d7420aded689fcac7d7e18c8dd0c10c98faa6a9b0
        • MD5 SHA1 SHA512

        mgwcxrnk.3gp

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\mgwcxrnk.3gp
        • Size 531B
        • SHA256 bea987ef9bf82843991bc23f6aeb4f45305a55abccb3932cdf99a76aebbe5d96
        • MD5 SHA1 SHA512

        mtkecifikl.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\mtkecifikl.mp3
        • Size 517B
        • SHA256 db6b427d4fd552fc4126357822e9fcae2ff617f15f1aad1d9a1989f13a25924b
        • MD5 SHA1 SHA512

        mufgjws.3gp

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\mufgjws.3gp
        • Size 548B
        • SHA256 70a42039584dfe587b465d2ef3c69b615938297fde7cf18142d6f4c647254e5b
        • MD5 SHA1 SHA512

        pcwjpa.dat

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\pcwjpa.dat
        • Size 530B
        • SHA256 e769a4593d964a1e979c5c580708aab51f115ed7bc6fa28eb70d4963c9e300d2
        • MD5 SHA1 SHA512

        pefe.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\pefe.mp3
        • Size 32KB
        • SHA256 62cc51c657e5190b464d50301e20c5320d6eb751d5aec371d2d5a4f13f6e0db5
        • MD5 SHA1 SHA512 SSDEEP

        pefe.mp3

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\pefe.mp3
        • Size 32KB
        • SHA256 b62c68fa559cda02f715b1972102b8ee9e99a77cd5a006b81c5b553b415a9f1e
        • MD5 SHA1 SHA512 SSDEEP

        pvpeevmn.jpg

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\pvpeevmn.jpg
        • Size 591B
        • SHA256 975e75af391ee0fdaa7b5dde07f0570f065aeabcf4cdccf97371ee8b6afad135
        • MD5 SHA1 SHA512

        qpxiulbcs.icm

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\qpxiulbcs.icm
        • Size 555B
        • SHA256 1aead8c1b811012929eae645a172f157843154f4d6b10aaff8a08d7223d405fd
        • MD5 SHA1 SHA512

        tbpnk.xl

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\tbpnk.xl
        • Size 557B
        • SHA256 ae596f282ecb2a8553691bcdc24596b08a06513c81cf26b4b80707b30daaf539
        • MD5 SHA1 SHA512

        tvckgt.ppt

        • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\tvckgt.ppt
        • Size 516B
        • SHA256 83b3db3efcb7c0e91ed4d243f383ff0e3412281337de8a9f18507d58fa3bffc1
        • MD5 SHA1 SHA512

        RegSvcs.exe

        • Path C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
        • Size 44KB
        • SHA256 2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390
        • MD5 SHA1 SHA512 SSDEEP

        memory/924-148-0x0000000001100000-0x0000000002100000-memory.dmp

        memory/924-151-0x0000000001100000-0x0000000001118000-memory.dmp

        memory/924-152-0x0000000010CD0000-0x0000000011274000-memory.dmp

        memory/924-155-0x0000000010A00000-0x0000000010A92000-memory.dmp

        memory/924-156-0x00000000109D0000-0x00000000109DA000-memory.dmp

        memory/924-159-0x00000000119F0000-0x0000000011A8C000-memory.dmp

        memory/924-160-0x0000000011A90000-0x0000000011AF6000-memory.dmp