Overview

overview

10

Static

static

5

fdfaff57ae...bb.exe

windows7-x64

10

fdfaff57ae...bb.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    28/12/2023, 22:51

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General

  • Target

    fdfaff57aec37ceb64c7c463a3868cbb.exe

  • Size

    512KB

  • MD5

    fdfaff57aec37ceb64c7c463a3868cbb

  • SHA1

    427dee00230865498fe11b08b3c477b18b7436c7

  • SHA256

    af5fac52cd1d92c677f3e27010611944cc446c5bc1ad8abf2f579d0dd0e26c04

  • SHA512

    e604868244500548e68ad12bff5a2a7fb19cc290db3d0ac93274c5a67e6875e5b9120afd0cc9eaba7f950efbc6b1550aed96030fd13d81353832219982a46a74

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6m:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5t

Score
10/10
evasionpersistencespywarestealertrojan

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
    evasion
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • Windows security bypass 2 TTPs 5 IoCs
    evasiontrojan
  • Disables RegEdit via registry modification 1 IoCs
    evasion
  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spywarestealer
  • Windows security modification 2 TTPs 6 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 64 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Modifies WinLogon 2 TTPs 2 IoCs
    persistence
  • AutoIT Executable 6 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 14 IoCs
  • Drops file in Windows directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Office loads VBA resources, possible macro or embedded object present
  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
    adwarespyware
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fdfaff57aec37ceb64c7c463a3868cbb.exe
    "C:\Users\Admin\AppData\Local\Temp\fdfaff57aec37ceb64c7c463a3868cbb.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1452
    • C:\Windows\SysWOW64\tojlhnaqsi.exe
      tojlhnaqsi.exe
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies visiblity of hidden/system files in Explorer
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:2716
      • C:\Windows\SysWOW64\drnunvvm.exe
        C:\Windows\system32\drnunvvm.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:2600
    • C:\Windows\SysWOW64\amjgyepwwjimtnp.exe
      amjgyepwwjimtnp.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2796
    • C:\Windows\SysWOW64\drnunvvm.exe
      drnunvvm.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in Program Files directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2680
    • C:\Windows\SysWOW64\mrellklnsircj.exe
      mrellklnsircj.exe
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2584
    • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
      "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Windows\mydoc.rtf"
      2⤵
      • Drops file in Windows directory
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2624
      • C:\Windows\splwow64.exe
        C:\Windows\splwow64.exe 12288
        3⤵
          PID:2192

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Program Files (x86)\Microsoft Office\Office14\1033\PROTTPLV.DOC.exe
      Filesize

      512KB

      MD5

      d8f4ae0bc651f8350df980c9821b2aeb

      SHA1

      6726476124c8fe798cc3d58f4de9965a539065fe

      SHA256

      abe26c9347d62be9e2b27234e09ae90d09209eaf78d9765ef2b572d746608aaa

      SHA512

      03654fec57aecd319e81af36963c33e57acd2484173092abebece996524e4f47803ad81dae11aa0328553dd83ffe661429ffdb80032c845a511fc486cfe7a64a

      Download Submit

    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm
      Filesize

      20KB

      MD5

      22fffa6ef001767cc3c93fff496d3400

      SHA1

      f8402268fcc694a2f538099329b83807662ffb87

      SHA256

      83fe94b59a0c8f1ec0380e15f4321293044df8f1220bdf2592001c65265bac9b

      SHA512

      870657a232a25e9a4f4aca32d7b3492a69b856fb5dae8f9a1c40296cfe83eb6239f7424d951bd09d7383b4f611d5e1c7dd4ee6b01cefd5f4543987e55f183cde

      Download Submit

    • C:\Windows\SysWOW64\amjgyepwwjimtnp.exe
      Filesize

      512KB

      MD5

      413dd1ed1a35c4056ce53c65f19ff560

      SHA1

      3b4624dd8239f504f9cb3ca8027b8c9feae9205d

      SHA256

      9dbb347552e66c0ab901394095ea57a95dbe48c1ad23778d06375c237b40b7af

      SHA512

      0b1ea01e975757b4ec484152220d37e7f5066bfc8e961755dc1d57ac871f0bec17e3d52cf96d4d5c65dafd97d4a9fa283df6be230b210767ee14535661cfdb3f

      Download Submit

    • C:\Windows\mydoc.rtf
      Filesize

      223B

      MD5

      06604e5941c126e2e7be02c5cd9f62ec

      SHA1

      4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

      SHA256

      85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

      SHA512

      803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

      Download Submit

    • \Windows\SysWOW64\drnunvvm.exe
      Filesize

      512KB

      MD5

      064dacca0fcafeb39361b91532a36279

      SHA1

      14af6d3124981f70dc578dc7340792cf6b414f54

      SHA256

      7e59722afba9acf833a7717ebaa557647f0ab2e8c39f1bbab788410445e14ac4

      SHA512

      63b41ab1978e9ddd4c61ddd18d22b950f5d90a5a651213eb1cc6daa2834def419cd67d44831a465450f04f5b5928d22fe97f686602db8b3fbeae2334b2ee9ceb

      Download Submit

    • \Windows\SysWOW64\mrellklnsircj.exe
      Filesize

      512KB

      MD5

      c2cefdc44c086d695548de64eb9af18d

      SHA1

      6b2cb720b87e1f8f77c14268ba6de575a9e339cd

      SHA256

      30f6836190bd360f6a44817930a958311f03e96408b42005288082dc18e97dcf

      SHA512

      d8a92c96e2445109e24de187c4277322e25dd8f660c6e4ecd3452c71eb515be2cec15b8b4623c29e326da80db44602bccdc7c661ca98bbc793d122c786b0bd00

      Download Submit

    • \Windows\SysWOW64\tojlhnaqsi.exe
      Filesize

      512KB

      MD5

      7fe2c45504452c9c8eadc37e39b95d11

      SHA1

      96ebf8d6798b741f2ba567c182e913b4cbc19c78

      SHA256

      3169eead4064d2a3565d8bf0df71289025133293334b98b29736d348a8de2eaf

      SHA512

      0718993d3b1f02b1fef867a368cb1afba83bc971cb7fc95cf5f6e6bfd30d73804e5b361dd6a35d876449a0f1be7491ef3a064bd89dec05f7760c7b5c983d6a4d

      Download Submit

    • memory/1452-0-0x0000000000400000-0x0000000000496000-memory.dmp

      Filesize

      600KB

      Download

    • memory/2624-45-0x000000002F111000-0x000000002F112000-memory.dmp

      Filesize

      4KB

      Download

    • memory/2624-46-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

      Download

    • memory/2624-47-0x000000007114D000-0x0000000071158000-memory.dmp

      Filesize

      44KB

      Download

    • memory/2624-76-0x000000007114D000-0x0000000071158000-memory.dmp

      Filesize

      44KB

      Download

    • memory/2624-97-0x000000005FFF0000-0x0000000060000000-memory.dmp

      Filesize

      64KB

      Download