Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-11-2024 01:18

General

  • Target

    81f31211ec6450740c642ed4672882f0cd76e655d047b4bd6611c7ee398cb747.exe

  • Size

    651KB

  • MD5

    8794d806c98728025528893f4dc79ba3

  • SHA1

    366db2c7b135196e43ef1ba22806bf9cc8c07f30

  • SHA256

    81f31211ec6450740c642ed4672882f0cd76e655d047b4bd6611c7ee398cb747

  • SHA512

    7ba8d5dea97b7513febac34872eed4fe1ca686cb7322ee4c9c89ba481c7055938e6b3cd5aa19f661cef4cb72dcd0489de3dc01e7e76d6c33b7f3f8bf00bf8a2a

  • SSDEEP

    12288:kpyZT1QrCxu/mDwLRI6BxcDqp9aqCcajVuD3Z7BPQGMWYur0s0D:kUx1QjOD3SxcDDcNDqWYurL0

Malware Config

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Modiloader family
  • ModiLoader Second Stage 12 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 11 IoCs
  • Loads dropped DLL 14 IoCs
  • Adds Run key to start application 2 TTPs 50 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 5 IoCs
  • UPX packed file 22 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 52 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\system32\csrss.exe
    %SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
    1⤵
    • Executes dropped EXE
    • Drops desktop.ini file(s)
    • Suspicious use of UnmapMainImage
    PID:336
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:856
  • C:\Users\Admin\AppData\Local\Temp\81f31211ec6450740c642ed4672882f0cd76e655d047b4bd6611c7ee398cb747.exe
    "C:\Users\Admin\AppData\Local\Temp\81f31211ec6450740c642ed4672882f0cd76e655d047b4bd6611c7ee398cb747.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2348
    • C:\Users\Admin\AppData\Local\Temp\81f31211ec6450740c642ed4672882f0cd76e655d047b4bd6611c7ee398cb747.exe
      81f31211ec6450740c642ed4672882f0cd76e655d047b4bd6611c7ee398cb747.exe
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2000
      • C:\Users\Admin\dHY4IvP3.exe
        C:\Users\Admin\dHY4IvP3.exe
        3⤵
        • Modifies visiblity of hidden/system files in Explorer
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:2996
        • C:\Users\Admin\vaoca.exe
          "C:\Users\Admin\vaoca.exe"
          4⤵
          • Modifies visiblity of hidden/system files in Explorer
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          PID:352
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c tasklist&&del dHY4IvP3.exe
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:2800
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist
            5⤵
            • Enumerates processes with tasklist
            • System Location Discovery: System Language Discovery
            • Suspicious use of AdjustPrivilegeToken
            PID:2732
      • C:\Users\Admin\azhost.exe
        C:\Users\Admin\azhost.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2824
        • C:\Users\Admin\azhost.exe
          azhost.exe
          4⤵
          • Executes dropped EXE
          • Maps connected drives based on registry
          • Suspicious behavior: EnumeratesProcesses
          PID:2752
      • C:\Users\Admin\bzhost.exe
        C:\Users\Admin\bzhost.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2156
        • C:\Users\Admin\bzhost.exe
          bzhost.exe
          4⤵
          • Executes dropped EXE
          • Maps connected drives based on registry
          • Suspicious behavior: EnumeratesProcesses
          PID:2644
      • C:\Users\Admin\czhost.exe
        C:\Users\Admin\czhost.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2828
        • C:\Users\Admin\czhost.exe
          czhost.exe
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          PID:864
      • C:\Users\Admin\dzhost.exe
        C:\Users\Admin\dzhost.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1192
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\system32\cmd.exe"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:2252
      • C:\Users\Admin\ezhost.exe
        C:\Users\Admin\ezhost.exe
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2268
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c tasklist&&del 81f31211ec6450740c642ed4672882f0cd76e655d047b4bd6611c7ee398cb747.exe
        3⤵
        • Deletes itself
        • System Location Discovery: System Language Discovery
        PID:568
        • C:\Windows\SysWOW64\tasklist.exe
          tasklist
          4⤵
          • Enumerates processes with tasklist
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:712

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\dzhost.exe

    Filesize

    221KB

    MD5

    5b414fb77d0dbec97ee529ec0bbcbeaf

    SHA1

    359cd24cd341f75eb46b99375824f6b649443f8e

    SHA256

    62027b13d4918e5e644952c977960a5e6dfe241e2bb35b387de0bfd0b752e882

    SHA512

    887b1b93e51d21927ffba49536f281003eef1dbee7634a08cab256f07701d54fe755acab7ae4a513c754067e4144c44c3580689ce187fd584ba440ab748a2360

  • C:\Windows\system32\consrv.dll

    Filesize

    53KB

    MD5

    63e99b675a1337db6d8430195ea3efd2

    SHA1

    1baead2bf8f433dc82f9b2c03fd65ce697a92155

    SHA256

    6616179477849205eb4075b75a042056d196f45d67f78929dbb3317a35ccbea9

    SHA512

    f5b986eafa38dbc9ad7759784ac887ecbb9c8d8009a3f33e91b9c9ceeaf043ed3e4ddab8e6b6b77e54aed9fcecab02442c8ff253f2136ea06996d05ddd68199f

  • \??\globalroot\systemroot\assembly\temp\@

    Filesize

    2KB

    MD5

    82987ecc13e13ac24ed69b68b95698a7

    SHA1

    e263e03254bcf9cf8797a07acc0eead5827b1fc7

    SHA256

    0a99d172bbf36fb5190ac93f85b1061b5c16f03655695f9b932ee8dca90d3353

    SHA512

    5cd1fd974cb1fa9a120f20a63b87b7d42425ac768cdf17922663bd57505a5d9a3d4e158a55ee27b607da22d4dd6094866a2f3c899047bbf746aa79e9e16e5419

  • \Users\Admin\azhost.exe

    Filesize

    248KB

    MD5

    27ef898ce7ec9c0b79a6996a0b419de1

    SHA1

    4e8aed756fbc6133af13028c33366d2eaa43f954

    SHA256

    f08df8dd8e3fe3de4a1ba4ba3bd355a233cf7febd5917b982ec5a949726c36a6

    SHA512

    5c7fa67e7ed1e8ce238e58f0b55618d1fc13af4e19d9267f6e88e277beb2f10e6c0f0027a532a2d1d4b6e40da1b31dfcacf50ccb71a75dc231ff876869b6787a

  • \Users\Admin\bzhost.exe

    Filesize

    138KB

    MD5

    4e22775699416e81275fea3266e14bba

    SHA1

    32cc2479a30abd1b40b3b7e959ac32317fa124fd

    SHA256

    95dc812e94d5ba0842af45685ca7262b55607336fcf4becda83dbb6416beffa9

    SHA512

    34b13e9142a9c4251c78d876f02f9e86f22253950d3f9126dacd8ec6f0f3bbd36146381ce16b130d794c4bbc1ba08aa4df8e2e7af0c3900035d486242c81e3bf

  • \Users\Admin\czhost.exe

    Filesize

    96KB

    MD5

    fb7e8882346223dfbad778b5a7f74f32

    SHA1

    8285032fbab2f9f52533657d46df457ab64d0e15

    SHA256

    6d6fa60b26cd2fc87c94afb20e7f3b35d6eca76d5a46191b8df802d30d4cbc3e

    SHA512

    31e3963dd156da4a57b3ffd37b857ee1d433c61dc22eb56356f2171b282f3735a1c31d65b3a0b431151b55bfebf964f82c5aa13a12f1c2a8a580840a7ea5da32

  • \Users\Admin\dHY4IvP3.exe

    Filesize

    288KB

    MD5

    e2a16fca33158332dbb3c66021fe8e3b

    SHA1

    9b784a05bf73e0bffbc2d6afe9acb4ca9d44a355

    SHA256

    17b36341825621fdf4a959b52c510dbf1295e89d380499b2d02a87d76ed68a82

    SHA512

    6ec42b9cbd79a0835abdb2e7e4484d143bea726d9d17929482d1efb16590d895bcbe24e7957dcfc26f093f7a6d1dc07644c649d5918227f101a2515dddb86550

  • \Users\Admin\ezhost.exe

    Filesize

    28KB

    MD5

    46ede15ce82c221c24bf81b2de1be7e8

    SHA1

    c332a5ec7aeb213c13449626156f6623351a4393

    SHA256

    a360c27de3799bf85f2501d4b375744394643fd50f8ecf5241d170b5cb7f6782

    SHA512

    517f497a4783a0f67ccfca641d93b7f20505c89d6252229f5b97df674f7be20ae48d4732c137ba081c2c1f8ec712371fa4ba4602873e11c0e02b109a00b6c316

  • \Users\Admin\vaoca.exe

    Filesize

    288KB

    MD5

    c071ef63fa93421431445d5bbd4d0580

    SHA1

    fad7be562b19e73f2552e458f2e5951a96c9e9d0

    SHA256

    01a2939a0793d63a3b0ef5c5a59b83039db1632232da05db40253575f49dc18b

    SHA512

    a8f61651ebb2743040376dcdf93bc8e7bfe46d8d899370096d84a14e4a19006bed5bd1fc658f3c55475f7735d78cdbfc0b4a3ce03706343406422bd5b52108c0

  • memory/864-107-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/864-115-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/864-121-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/864-120-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/864-105-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/864-109-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/864-119-0x0000000000400000-0x000000000040E000-memory.dmp

    Filesize

    56KB

  • memory/1192-131-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1192-156-0x0000000000400000-0x0000000000464000-memory.dmp

    Filesize

    400KB

  • memory/1192-132-0x00000000020B0000-0x00000000020F5000-memory.dmp

    Filesize

    276KB

  • memory/2000-3-0x0000000000400000-0x0000000000507000-memory.dmp

    Filesize

    1.0MB

  • memory/2000-2-0x0000000000400000-0x0000000000507000-memory.dmp

    Filesize

    1.0MB

  • memory/2000-129-0x0000000000350000-0x00000000003B4000-memory.dmp

    Filesize

    400KB

  • memory/2000-79-0x0000000000400000-0x0000000000507000-memory.dmp

    Filesize

    1.0MB

  • memory/2000-191-0x0000000000400000-0x0000000000507000-memory.dmp

    Filesize

    1.0MB

  • memory/2000-0-0x0000000000400000-0x0000000000507000-memory.dmp

    Filesize

    1.0MB

  • memory/2000-7-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2000-6-0x0000000000400000-0x0000000000507000-memory.dmp

    Filesize

    1.0MB

  • memory/2000-13-0x0000000000400000-0x0000000000507000-memory.dmp

    Filesize

    1.0MB

  • memory/2000-15-0x0000000000400000-0x0000000000507000-memory.dmp

    Filesize

    1.0MB

  • memory/2000-130-0x0000000000350000-0x00000000003B4000-memory.dmp

    Filesize

    400KB

  • memory/2000-14-0x0000000000400000-0x0000000000507000-memory.dmp

    Filesize

    1.0MB

  • memory/2156-92-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2348-11-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2644-85-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2644-168-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2644-89-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2644-94-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2644-95-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2644-96-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2644-82-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2644-84-0x0000000000400000-0x0000000000427000-memory.dmp

    Filesize

    156KB

  • memory/2752-57-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2752-60-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2752-63-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2752-67-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2752-69-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2752-55-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2752-53-0x0000000000400000-0x0000000000437000-memory.dmp

    Filesize

    220KB

  • memory/2824-70-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2828-116-0x0000000000400000-0x000000000041B000-memory.dmp

    Filesize

    108KB

  • memory/2996-44-0x00000000035D0000-0x000000000408A000-memory.dmp

    Filesize

    10.7MB