Analysis

  • max time kernel
    149s
  • max time network
    130s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/08/2024, 08:32

General

  • Target

    c87cdf9a840433548111d5a9512f39e6_JaffaCakes118.exe

  • Size

    512KB

  • MD5

    c87cdf9a840433548111d5a9512f39e6

  • SHA1

    34a2a891a166d5595b3c3a374b1d88ee279bb741

  • SHA256

    8f59535ab29e2faf7af6dc164a22404da6ac68acdb66353ce6871f12c1ddf867

  • SHA512

    cb2d0fa33a7209b3c5365d9c0b0b21f0d2bfd6c1a2beeddbef749c01d9ff47f7e786c16b033628bbf423e50918e6b2fe1fc2c5b4c433b67d78df8e23d58bcc45

  • SSDEEP

    6144:1VY0W0sVVZ/dkq5BCoFaJ2i5Lf24C07N5OvSLTUF6pQxI6Upe2cBnTu19bcodj6R:1gDhdkq5BCoC5LfWSLTUQpr2Zu19Qm5g

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 5 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 5 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Windows security modification 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 3 IoCs
  • 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
  • AutoIT Executable 9 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in System32 directory 13 IoCs
  • Drops file in Program Files directory 15 IoCs
  • Drops file in Windows directory 19 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 20 IoCs
  • Suspicious behavior: AddClipboardFormatListener 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of FindShellTrayWindow 18 IoCs
  • Suspicious use of SendNotifyMessage 18 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c87cdf9a840433548111d5a9512f39e6_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\c87cdf9a840433548111d5a9512f39e6_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:3804
    • C:\Windows\SysWOW64\pexgoavpyi.exe
      pexgoavpyi.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
      • Windows security modification
      • Enumerates connected drives
      • Modifies WinLogon
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1484
      • C:\Windows\SysWOW64\aykcfxkp.exe
        C:\Windows\system32\aykcfxkp.exe
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3980
    • C:\Windows\SysWOW64\rgkbxemtsfdgzur.exe
      rgkbxemtsfdgzur.exe
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:2816
    • C:\Windows\SysWOW64\aykcfxkp.exe
      aykcfxkp.exe
      2⤵
      • Executes dropped EXE
      • Enumerates connected drives
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:3524
    • C:\Windows\SysWOW64\tmdynoacrnynb.exe
      tmdynoacrnynb.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:1172
    • C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
      "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Windows\mydoc.rtf" /o ""
      2⤵
      • Drops file in Windows directory
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:4992

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLN.DOC.exe

    Filesize

    512KB

    MD5

    a56f953e051a2e5d6fa165c261eff84e

    SHA1

    0a89a832450fd93321f635074d796b527ce6999d

    SHA256

    abc020398781f63c5e2ef98cfa6a21e9f60ecfbbde50092e5f34008097ae4f78

    SHA512

    876d38d03f8e403ec402e985c6337edffb88322f491ab810ea4986c82764df7965c66add534c02c9a4400aca6e71fb6e1d6f7a6c53575813e0db24ebc27fa524

  • C:\Program Files\Microsoft Office\root\Office16\1033\PROTTPLV.DOC.exe

    Filesize

    512KB

    MD5

    55ab1b6423f6d576024f0778723bd396

    SHA1

    24755737698004da967b973bb6a3a29ed6047a2a

    SHA256

    1a23ae6685c19b3a9aa85ae337fbb0f3ebc02e36321e9a8bb7c3df61bfb7cbe8

    SHA512

    d8bb10c8412cc46cb429f630a7b4b76ed3f1020b3c741038f126f5a8a1b6f1bdb384941d37955c3bdfabfec9f4514f9e8c1677098ebd638111ff5c37206f64e5

  • C:\Users\Admin\AppData\Local\Temp\TCDECD9.tmp\gb.xsl

    Filesize

    262KB

    MD5

    51d32ee5bc7ab811041f799652d26e04

    SHA1

    412193006aa3ef19e0a57e16acf86b830993024a

    SHA256

    6230814bf5b2d554397580613e20681752240ab87fd354ececf188c1eabe0e97

    SHA512

    5fc5d889b0c8e5ef464b76f0c4c9e61bda59b2d1205ac9417cc74d6e9f989fb73d78b4eb3044a1a1e1f2c00ce1ca1bd6d4d07eeadc4108c7b124867711c31810

  • C:\Users\Admin\AppData\Roaming\Microsoft\Office\Recent\index.dat

    Filesize

    341B

    MD5

    a07f6fd7d8173b77b6ca46124340def7

    SHA1

    814e4eecc6bdee699237d29a6a231c83fef61745

    SHA256

    12a8a0a80404ad7be91db53330c838adcabad3e32b0f6f32f1804ec01e49860c

    SHA512

    1159c997d108163dd6268c745a9d73d36312c165f05e689ced12df294d111bf721e3ff2ff2e3aa41c1fe8976decd1a9d80b0ed2358742eac98fd61a217469cc2

  • C:\Users\Admin\AppData\Roaming\Microsoft\UProof\CUSTOM.DIC

    Filesize

    16B

    MD5

    d29962abc88624befc0135579ae485ec

    SHA1

    e40a6458296ec6a2427bcb280572d023a9862b31

    SHA256

    a91a702aab9b8dd722843d3d208a21bcfa6556dfc64e2ded63975de4511eb866

    SHA512

    4311e87d8d5559248d4174908817a4ddc917bf7378114435cf12da8ccb7a1542c851812afbaf7dc106771bdb2e2d05f52e7d0c50d110fc7fffe4395592492c2f

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

    Filesize

    2KB

    MD5

    85276b1ee92ef77fc8ff2ae555ec0bee

    SHA1

    33991a69481081c420b4d2893dac3278a3077566

    SHA256

    512a2c6c6fd7dd5395d119f4612da09a386e0540c6b7620a2d69839a375d1e1b

    SHA512

    6601e1b470dcd347f20743befc38679ca613bacfd3418b6d0121cc12917290e5eb0080ef651b911c3d8d3e2e7f0dfe24294ad17662c3f88d46b0295e9a073330

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

    Filesize

    3KB

    MD5

    0724fb24ae72af1fa6fce15fc4afcd84

    SHA1

    80d19d98b679285a6ec69bd2f52aef795fce18ae

    SHA256

    7cefb8e453b8b8cfae5229bf0d2218a4157aca16f907abf71522e7118f78135b

    SHA512

    26e589566775e33ca4919c4a8d59e6e686142f116c43db09ef79c7196c2ccf8d5a1f5a3cbae5220916aa6cac708571834c5bbb5b6943dc58ba5fc074a3f72f9c

  • C:\Windows\SysWOW64\aykcfxkp.exe

    Filesize

    512KB

    MD5

    d0d09f0233ccca36d4919f53b89f3581

    SHA1

    d54fe32d51195f1b6084d49f1e6a001034ab47ed

    SHA256

    483a1955190fc174c64da06b7ff9c4762e17b2eb8d25731b0c069bb48624d979

    SHA512

    12d1abf0ebf2fa840a10c9a527e6d367d678f8c542ed64ecfbcbf791a406c2d439dae19378d1600bc1562f8a62c5143c1c6b60cfbd9d8e1e393643c500c22f1e

  • C:\Windows\SysWOW64\pexgoavpyi.exe

    Filesize

    512KB

    MD5

    81e6d19ca32e7d62c912f9f694f1eba1

    SHA1

    21d865555b1355841b506bcec6d39c813842cfab

    SHA256

    188d55edf50c23ceb7921c5a3b3f9b794409fdfbb88d76e721f6e9c4bc93e117

    SHA512

    8414ce335f74c167baa2bb99ce4ae1f41a67777b13d45d24e36cacba4305b793fc13fa631a995d512ee654ea1da0921831ec61577b592885d8931dca37abbfb6

  • C:\Windows\SysWOW64\rgkbxemtsfdgzur.exe

    Filesize

    512KB

    MD5

    9553ef7f914673cb815c6573511673e8

    SHA1

    58fdb73281bb11294c327a4d23f8fa6d5c6e16e7

    SHA256

    c42b78c846d6a28d48e91a301e3943f7d667f2b286ce3d4d8bb4b549baa604b9

    SHA512

    733674c503f6d526155aca077f810746ea3020c83da6ceaf1aa1f064d92cff390e595158fad679bbf7957e384afa92e51163617f6ec59f63d96ac40bc7ee517e

  • C:\Windows\SysWOW64\tmdynoacrnynb.exe

    Filesize

    512KB

    MD5

    5d75ef90f73445081a37156e958edb20

    SHA1

    c5fce76d05e1d82af28ffa81ff3bf8c37baeb43d

    SHA256

    b1b6bd1d38926fec37076a77cecccede8c25316cd729ad7eb5850903506a935d

    SHA512

    ad661330bc5428cf70cfbc80925d0b0053c031cec414358381514536590b09cfd4fcedda90118321e43c06fdfbd9002993a4717676e2244c47bccd602dfabfbf

  • C:\Windows\mydoc.rtf

    Filesize

    223B

    MD5

    06604e5941c126e2e7be02c5cd9f62ec

    SHA1

    4eb9fdf8ff4e1e539236002bd363b82c8f8930e1

    SHA256

    85f2405d1f67021a3206faa26f6887932fea71aea070df3efb2902902e2d03e2

    SHA512

    803f5f2fddbf29fef34de184eb35c2311b7a694740983ca10b54ef252dd26cda4987458d2569f441c6dedc3478bea12b45bfd3566f1b256504a0869ad3829df7

  • \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe

    Filesize

    512KB

    MD5

    4ae2ddf9d21895fa85564a55ead0c5c4

    SHA1

    31977f17b9e66c3923514b987581a157b8b9e151

    SHA256

    513c12e9537f9e34e61765c27af39b34ac156d0a28a2fc04387649ff1099cc61

    SHA512

    cdccc458b8834cbcdd35576a2de5f1bf12bdd131e1fd4b238ab92884ca9b4616159b71f4f1d478984ab6e773fa6d3e5e424726d958e318ff8cbb1188f9c8e3f6

  • \??\c:\Windows\SysWOW64\MSDRM\MsoIrmProtector.doc.exe

    Filesize

    512KB

    MD5

    cef0cc3ba6dacceafd2831db6f8180aa

    SHA1

    a893544039dfb7f535e3aa23b0df30f065c352df

    SHA256

    671a133b90b6a6e094212fe9bf271cd53804f0c358fa3d34d4b920ff77f34a8e

    SHA512

    945bf179cc20f89a70b881a7b1fb107e278883104d9ce265fa8227b794d871513a604c23cd76e88bdd111714afc4303beaa8f9ab1484243994f2ebb461ee7783

  • memory/3804-0-0x0000000000400000-0x0000000000496000-memory.dmp

    Filesize

    600KB

  • memory/4992-36-0x00007FF968650000-0x00007FF968660000-memory.dmp

    Filesize

    64KB

  • memory/4992-38-0x00007FF968650000-0x00007FF968660000-memory.dmp

    Filesize

    64KB

  • memory/4992-37-0x00007FF968650000-0x00007FF968660000-memory.dmp

    Filesize

    64KB

  • memory/4992-39-0x00007FF968650000-0x00007FF968660000-memory.dmp

    Filesize

    64KB

  • memory/4992-40-0x00007FF966480000-0x00007FF966490000-memory.dmp

    Filesize

    64KB

  • memory/4992-41-0x00007FF966480000-0x00007FF966490000-memory.dmp

    Filesize

    64KB

  • memory/4992-35-0x00007FF968650000-0x00007FF968660000-memory.dmp

    Filesize

    64KB

  • memory/4992-367-0x00007FF968650000-0x00007FF968660000-memory.dmp

    Filesize

    64KB

  • memory/4992-370-0x00007FF968650000-0x00007FF968660000-memory.dmp

    Filesize

    64KB

  • memory/4992-368-0x00007FF968650000-0x00007FF968660000-memory.dmp

    Filesize

    64KB

  • memory/4992-369-0x00007FF968650000-0x00007FF968660000-memory.dmp

    Filesize

    64KB