Analysis

  • max time kernel
    140s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240910-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-09-2024 14:21

General

  • Target

    setup.exe

  • Size

    3.9MB

  • MD5

    81e69b29c4c09391a12b665e7661f48e

  • SHA1

    b103b694d12544c9db444badd9e2263d219698b1

  • SHA256

    81e45c1e6d6a718624159e116e6daa8c1547f39bef7f56163303e7eca8abfae1

  • SHA512

    5476b9fa6967aefcb73793c965224c93d2ab46268830fcb71c69bc864e22e0cb92512959fe7a728ee77c2bde00e3ce9eda64d015ff1ef34273292707680c0042

  • SSDEEP

    98304:QhVVJqioKMFh1qKsbZcMgsGwNmlCNE4CJgcMyfQP/4:QhV1pMzHQCMFGImHgcM54

Malware Config

Signatures

  • Detects Strela Stealer payload 2 IoCs
  • Strela stealer

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

  • Loads dropped DLL 13 IoCs
  • Drops file in System32 directory 2 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.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\setup.exe
    "C:\Users\Admin\AppData\Local\Temp\setup.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of SetWindowsHookEx
    PID:3416
  • C:\Windows\system32\AUDIODG.EXE
    C:\Windows\system32\AUDIODG.EXE 0x33c 0x518
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2024

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\nsi1941.tmp\AdvSplash.dll

    Filesize

    6KB

    MD5

    13cc92f90a299f5b2b2f795d0d2e47dc

    SHA1

    aa69ead8520876d232c6ed96021a4825e79f542f

    SHA256

    eb1ca2b3a6e564c32677d0cdc388e26b74ef686e071d7dbca44d0bfa10488feb

    SHA512

    ff4e6e6e7104568fc85ef3a3f0494a5c7822a4ceaf65c584ad534f08f9a472a8d86f0a62f1f86343c61e2540b2254714b7ea43e4b312ff13d8271ff069386fa3

  • C:\Users\Admin\AppData\Local\Temp\nsi1941.tmp\Bass.dll

    Filesize

    101KB

    MD5

    a8af308ff01b4477657955fbf0cc8408

    SHA1

    0794c059f0326e4a71be8a3ee4ac17a657d90d88

    SHA256

    14a38f56be50a3829eb1eda2a908da2de5913f81d5cb01d8b668593d0fc36594

    SHA512

    9e221967db95d4b86bf311891193dfd1515806aa0d43198d3bc26a17d77f06f212ab9dba1ca8575f50d224380e8b109529faccf2f56daac834da83a83677a0fd

  • C:\Users\Admin\AppData\Local\Temp\nsi1941.tmp\InstallOptions.dll

    Filesize

    14KB

    MD5

    325b008aec81e5aaa57096f05d4212b5

    SHA1

    27a2d89747a20305b6518438eff5b9f57f7df5c3

    SHA256

    c9cd5c9609e70005926ae5171726a4142ffbcccc771d307efcd195dafc1e6b4b

    SHA512

    18362b3aee529a27e85cc087627ecf6e2d21196d725f499c4a185cb3a380999f43ff1833a8ebec3f5ba1d3a113ef83185770e663854121f2d8b885790115afdf

  • C:\Users\Admin\AppData\Local\Temp\nsi1941.tmp\NSIS_SkinCrafter_Plugin.dll

    Filesize

    5.8MB

    MD5

    028251654a4d65509aa8ccb5f2ee284a

    SHA1

    4a4ad468a86df6b903002be4f8919017fea0c152

    SHA256

    8b25cf3f7aa82fadccb2ce615ce0e40c5a8a3ea7bc51180a92173ee113a0ccfe

    SHA512

    f252670bca0da9e8e2c519a6ef4ad6dd0c4e548aeb7566693a7d203e73e63345fc58683072020ef771d836429bed1d7b4fdf105aa3e62a969e9c8d39556e1d2d

  • C:\Users\Admin\AppData\Local\Temp\nsi1941.tmp\SkinCrafter.dll

    Filesize

    792KB

    MD5

    8fea8fd177034b52e6a5886fb5e780bd

    SHA1

    99f511388a2420d53b8406baed48ba550842eaad

    SHA256

    546dddc7a31609b5bc3dc8ecef6f6782b77613853c54171fc32314c08a69e8de

    SHA512

    5d82a3b9cf9d69049e6278a6d835b8a9a386c97ae9a69cf658675b0a8751a344d0da1ee704e9bb9023dab7cd77fdca684bdc90837960b583eef0bb4324498696

  • C:\Users\Admin\AppData\Local\Temp\nsi1941.tmp\System.dll

    Filesize

    11KB

    MD5

    c17103ae9072a06da581dec998343fc1

    SHA1

    b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

    SHA256

    dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

    SHA512

    d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

  • C:\Users\Admin\AppData\Local\Temp\nsi1941.tmp\ioSpecial.ini

    Filesize

    749B

    MD5

    aafaaa4c8dc44f526e64c79a3cb9708d

    SHA1

    d6f615072c67975007cb4d52084ac1c7c5d7e905

    SHA256

    3cb0c0157257e2e02b9e30d4f97893d503ea3bb1eb98a2367bd45de6129b3aa6

    SHA512

    5c04621a74e7d635ae8bcb68bb28b57c8cbd3a1d80ec206021e6cb70e477880b46053f30e2dbc8298b40a4773b9ffa835a496b6468fcfbc14cf543a8d0c18bac

  • C:\Windows\SysWOW64\mfc71.dll

    Filesize

    1.0MB

    MD5

    1fd3f9722119bdf7b8cff0ecd1e84ea6

    SHA1

    9a4faa258b375e173feaca91a8bd920baf1091eb

    SHA256

    385ea2a454172e3f9b1b18778d4d29318a12be9f0c0c0602db72e2cce136e823

    SHA512

    109d7a80a5b10548200d05ab3d7deb9dc2ae8e40d84b468184895eb462211078ecdcb11f01eb50c91c65a924f8e592cd63b78e402dcaea144ff89c11f2ab07d6

  • C:\Windows\SysWOW64\msvcr71.dll

    Filesize

    340KB

    MD5

    ca2f560921b7b8be1cf555a5a18d54c3

    SHA1

    432dbcf54b6f1142058b413a9d52668a2bde011d

    SHA256

    c4d4339df314a27ff75a38967b7569d9962337b8d4cd4b0db3aba5ff72b2bfbb

    SHA512

    23e0bdd9458a5a8e0f9bbcb7f6ce4f87fcc9e47c1ee15f964c17ff9fe8d0f82dd3a0f90263daaf1ee87fad4a238aa0ee92a16b3e2c67f47c84d575768edba43e

  • memory/3416-134-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-136-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-34-0x0000000004690000-0x0000000004C5D000-memory.dmp

    Filesize

    5.8MB

  • memory/3416-27-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-26-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-16-0x0000000002F7C000-0x0000000002F7D000-memory.dmp

    Filesize

    4KB

  • memory/3416-133-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-15-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-135-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-44-0x0000000004C60000-0x0000000004D2C000-memory.dmp

    Filesize

    816KB

  • memory/3416-137-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-138-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-139-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-140-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-141-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-142-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-143-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-144-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB

  • memory/3416-145-0x0000000002F30000-0x0000000002F7D000-memory.dmp

    Filesize

    308KB