Analysis

  • max time kernel
    11s
  • max time network
    19s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    03-08-2024 16:19

General

  • Target

    26af88cdc77ebe6ae1ac8d015658b05d93df4a4504ae6ab61919008e891d22af.exe

  • Size

    39.8MB

  • MD5

    e872bca75b21b9fd7ea0ccd762d399d9

  • SHA1

    aac2a9bf68f87fc237ac121085328071e108ed2a

  • SHA256

    26af88cdc77ebe6ae1ac8d015658b05d93df4a4504ae6ab61919008e891d22af

  • SHA512

    3bc06f126d92bbd6e8f8f19a90632ba9e0b3232a62ec94db021ffa987efe48c63df671ad47805e43f5878916a1f7ec8ede5808d38cb641737ebcbad1c62535ef

  • SSDEEP

    786432:2aiqD9o7TuCV0GvGEpjWWHAxsD8TgdyCCD06KsEKjwUzAqhyNjg797+zr2sZW:2ko7J5eoE4WqTm0ABwY7hy9gp7+X2sk

Malware Config

Signatures

  • Detects Strela Stealer payload 1 IoCs
  • Strela stealer

    An info stealer targeting mail credentials first seen in late 2022.

  • Loads dropped DLL 13 IoCs
  • Drops file in System32 directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 1 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 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\26af88cdc77ebe6ae1ac8d015658b05d93df4a4504ae6ab61919008e891d22af.exe
    "C:\Users\Admin\AppData\Local\Temp\26af88cdc77ebe6ae1ac8d015658b05d93df4a4504ae6ab61919008e891d22af.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    PID:2452

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsj1C48.tmp\Processes.dll

    Filesize

    56KB

    MD5

    dcf8677120ea4333339c9b1ae37a0f55

    SHA1

    f52d1fb8fc99c60dfc5f876d310e804da4ec3d1a

    SHA256

    6eab0471453c9848f8a15a10f0610b7026a1d2c583d5e852e341f18f580ebfb8

    SHA512

    4f7272dc0916456871fedde32fb675b1c0fd2f144df604e154eed3ff3fb7031a361c11a22713e8931efbdba0ed03305d6ee12d74abd83b3445ef1515ed8ddba4

  • C:\Users\Admin\AppData\Local\Temp\nsj1C48.tmp\test.ini

    Filesize

    1KB

    MD5

    872ac22f6b5301d525c1040e3cd93c41

    SHA1

    73413335b0bfd7c1a9b43dc2400f0042a8bc7a2b

    SHA256

    b69b9fb9c9e6a221b4c575a46d420106abdbfa36bc9c1efcfcd30567289ccff8

    SHA512

    d854fe0ec639cbcb0be718546fa4be097c39f252708aea7759a84fecdc391017e4ce43faf05bae6d9c12159142fabd486521bae3f13af79c30e9fa193d46290c

  • \Users\Admin\AppData\Local\Temp\nsj1C48.tmp\InstallOptionsEx.dll

    Filesize

    120KB

    MD5

    f2f4b4f2985a1a6a45fd370c604f76bc

    SHA1

    b9c75014d8d1119886de917f9ba68e3638f6e21c

    SHA256

    fe5e20bfb1071901e3adfa90f6c0fae4e4428e5ec85ed5a69f78f7567cc16157

    SHA512

    5fd4fe56818da4e1a39ed09196264f403048ecf4bd981f27e97ef3a66dc014655097c5b8e3dbb1460dfedcf90f8945ecf07d9a57d5cb4e4662daf05e3dc07a9d

  • \Users\Admin\AppData\Local\Temp\nsj1C48.tmp\NSISTools.dll

    Filesize

    42KB

    MD5

    beca78fa9b105c60b39f3cb567e6f5d0

    SHA1

    2e31bc180c59adc802bf218eb776db56846aaa43

    SHA256

    d4f922feb8257e85c0476ce7a1b0b0abfd9fc9f30406c789b30f17ddac745260

    SHA512

    434cbd3cc6441a330f26b70e22062f5057e27aead828ec8aca45b5b40d9ab4184d67480db3c8b9c93ef47e51a5f05d0445cf768106a92cbad50daeb78be02f38

  • \Users\Admin\AppData\Local\Temp\nsj1C48.tmp\NSIS_SkinCrafter_Plugin.dll

    Filesize

    5.8MB

    MD5

    bad139a2d8491896ce10ee8e4e55a921

    SHA1

    4346289950aa9b547d96553ced684b6a05af0234

    SHA256

    363e9c63b62d61ff3dd5f3cb1de5d9c2320c95787ae0a30035c19f01adebb0c3

    SHA512

    7ba1908909237986c573244743f4632dde72da9f708c151879102633f7bd7cffbaf1f79b3bb3797952304248aae9dd984f6a07a9dbf6433cc5b2d7f72ee80e15

  • \Users\Admin\AppData\Local\Temp\nsj1C48.tmp\SkinCrafter.dll

    Filesize

    792KB

    MD5

    8fea8fd177034b52e6a5886fb5e780bd

    SHA1

    99f511388a2420d53b8406baed48ba550842eaad

    SHA256

    546dddc7a31609b5bc3dc8ecef6f6782b77613853c54171fc32314c08a69e8de

    SHA512

    5d82a3b9cf9d69049e6278a6d835b8a9a386c97ae9a69cf658675b0a8751a344d0da1ee704e9bb9023dab7cd77fdca684bdc90837960b583eef0bb4324498696

  • \Users\Admin\AppData\Local\Temp\nsj1C48.tmp\UserInfo.dll

    Filesize

    3KB

    MD5

    52dc0884fadcf8906b614a82ea2abcc5

    SHA1

    0204f10246b4769363f91701e81e289a541b0716

    SHA256

    2e0500a0cd75c23019b10f8c920c50a1ba49cc1bb43086d2a289051d805e600d

    SHA512

    0f97c67a13a08c404cfa3c87cc04dfa85ab3fc3137371136db998171b50b0653956262c5b764b6925764d7e544de9293e16ed365b4cd06b6d55cfdd37f968ba9

  • \Users\Admin\AppData\Local\Temp\nsj1C48.tmp\cpudesc.dll

    Filesize

    5KB

    MD5

    db40175690a780def9e6c6327654be11

    SHA1

    703c074a625fad245300fb97657f640e91ce36d6

    SHA256

    08a4ab71158afdaea82ae1f5670ae87b0b03facd606db26d4861c178b630cec2

    SHA512

    17012e166365a48a7dcc92aa9f4d67e6fafa347eb637f434d99a4f0f62fd6a438eb21e98aff18f04cc56e3d91e97022a2bf4ef35278d9d15146dbeab6d3c5c7a

  • \Users\Admin\AppData\Local\Temp\nsj1C48.tmp\processwork.dll

    Filesize

    231KB

    MD5

    0a4fa7a9ba969a805eb0603c7cfe3378

    SHA1

    0f018a8d5b42c6ce8bf34b4a6422861c327af88c

    SHA256

    27329ea7002d9ce81c8e28e97a5c761922097b33cedeada4db30d2b9d505007c

    SHA512

    e13e29712457d5e6351bfd69cba6320795d8b2fd1a047923814f8699f7188ec730ec7f0d946fdff66c8b430fef011415ed045b6ea56e4cc0b1d010171ab88178

  • \Windows\SysWOW64\mfc71.dll

    Filesize

    1.0MB

    MD5

    1fd3f9722119bdf7b8cff0ecd1e84ea6

    SHA1

    9a4faa258b375e173feaca91a8bd920baf1091eb

    SHA256

    385ea2a454172e3f9b1b18778d4d29318a12be9f0c0c0602db72e2cce136e823

    SHA512

    109d7a80a5b10548200d05ab3d7deb9dc2ae8e40d84b468184895eb462211078ecdcb11f01eb50c91c65a924f8e592cd63b78e402dcaea144ff89c11f2ab07d6

  • \Windows\SysWOW64\msvcr71.dll

    Filesize

    340KB

    MD5

    ca2f560921b7b8be1cf555a5a18d54c3

    SHA1

    432dbcf54b6f1142058b413a9d52668a2bde011d

    SHA256

    c4d4339df314a27ff75a38967b7569d9962337b8d4cd4b0db3aba5ff72b2bfbb

    SHA512

    23e0bdd9458a5a8e0f9bbcb7f6ce4f87fcc9e47c1ee15f964c17ff9fe8d0f82dd3a0f90263daaf1ee87fad4a238aa0ee92a16b3e2c67f47c84d575768edba43e

  • memory/2452-58-0x00000000033A0000-0x00000000033AE000-memory.dmp

    Filesize

    56KB

  • memory/2452-84-0x0000000003530000-0x0000000003571000-memory.dmp

    Filesize

    260KB

  • memory/2452-92-0x00000000033C0000-0x00000000033E0000-memory.dmp

    Filesize

    128KB

  • memory/2452-77-0x00000000033C0000-0x00000000033D2000-memory.dmp

    Filesize

    72KB

  • memory/2452-25-0x0000000002C60000-0x0000000002D2C000-memory.dmp

    Filesize

    816KB