Analysis

  • max time kernel
    150s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    15-05-2024 21:46

General

  • Target

    4b8c52918bd30d1cd30ba7779cfed1aa68a5d18f2168b1514dab1cdef6f0e2e7.exe

  • Size

    75KB

  • MD5

    20dcf1c469e68983e50d9976c92274b0

  • SHA1

    dbea4941b1aaf29bf1bb0aae87e61fcd08a1cee4

  • SHA256

    4b8c52918bd30d1cd30ba7779cfed1aa68a5d18f2168b1514dab1cdef6f0e2e7

  • SHA512

    b53d1af2901e8c817b9d2b4c54992d138e4dd63a273617851c86cdfd491e38987655323a26fbb11b364f1cf1c16b59a61e333c621091b8acfe3c9e718032ef85

  • SSDEEP

    1536:ax1Qja7luy6y0s4sqfkbnAKBOKofHfHTXQLzgvnzHPowYbvrjD/L7QPbg/Dr0T3s:KOjWuyt0ZsqsXOKofHfHTXQLzgvnzHPE

Malware Config

Signatures

  • UPX dump on OEP (original entry point) 8 IoCs
  • Drops file in Drivers directory 1 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 6 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 19 IoCs

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

  • Maps connected drives based on registry 3 TTPs 6 IoCs

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

  • Drops file in System32 directory 64 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • Modifies registry class 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4b8c52918bd30d1cd30ba7779cfed1aa68a5d18f2168b1514dab1cdef6f0e2e7.exe
    "C:\Users\Admin\AppData\Local\Temp\4b8c52918bd30d1cd30ba7779cfed1aa68a5d18f2168b1514dab1cdef6f0e2e7.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Maps connected drives based on registry
    • Drops file in System32 directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1440
    • C:\Windows\SysWOW64\ctfmen.exe
      ctfmen.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2980
      • C:\Windows\SysWOW64\smnss.exe
        C:\Windows\system32\smnss.exe
        3⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Enumerates connected drives
        • Maps connected drives based on registry
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        PID:2764

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\satornas.dll

    Filesize

    183B

    MD5

    82922b5ae1369899133e16a95f9909eb

    SHA1

    6293374b6c9548106f4acd875136f1bda1a57668

    SHA256

    4d3dc15f23ddcfbdf86dbac7f97927d024fbdef724a23803615fe3c5f663c834

    SHA512

    ae368af31b8295d2d363fcc2a5cb8e25f887cd4d7b999edbfe1938f10ac3278a82628ed3cf18dcab7b1047a52c1d1eef27833760167b1f5d404394e27839641c

  • \Windows\SysWOW64\ctfmen.exe

    Filesize

    4KB

    MD5

    b444b889bf482bfa4008b50efcd43a68

    SHA1

    fdb46c6533974f1086826ae049e73faa602374c4

    SHA256

    065c594bd7866c609d38bcfb00093b9b432945c30d52a041b37aed650594980e

    SHA512

    70aa90439b703f822a9310287536bf557dccec61d2d3d82fe96229be0bcba52baad6e44314ce691aa629eb3613ca42ab4f05bf071be736734d653d7a3cc43759

  • \Windows\SysWOW64\shervans.dll

    Filesize

    8KB

    MD5

    450ed5ada0620a850e65373937b1ad36

    SHA1

    88c29ac462b31aabd3c9b321cf0ca3c9f98e86b8

    SHA256

    e6863d93f0039fca3a22e6cd09c8463ec76a41f48aaade0af724f2eb4e2b574e

    SHA512

    88b45e403fbbc7910807902eb4e5f98134e9efd4bc3402d9f12e113ff1b1c87e5c030060616428acaee942a31aabc37a89d06e3fb6be6f2737d99fe9c5a27a99

  • \Windows\SysWOW64\smnss.exe

    Filesize

    75KB

    MD5

    1481f7e3a913b894621a591fa2cd62df

    SHA1

    eb7af8c0078e78e6ec6062ded6505a399b981c84

    SHA256

    891ccbcd9f8b6807bdeb0cecf3b8d56d1a7c3dd0753888c69c2016f79b6fc347

    SHA512

    65fb379c3d9f2392ece39a2a087a48a17db128a24745d9b6104a579e318e9e6b96b70128fa7c271edd959a9a9c3601cd229d8aa0a789ef9f116c2af86853fad7

  • memory/1440-15-0x0000000010000000-0x000000001000D000-memory.dmp

    Filesize

    52KB

  • memory/1440-17-0x0000000000320000-0x0000000000329000-memory.dmp

    Filesize

    36KB

  • memory/1440-27-0x0000000010000000-0x000000001000D000-memory.dmp

    Filesize

    52KB

  • memory/1440-24-0x0000000000320000-0x0000000000329000-memory.dmp

    Filesize

    36KB

  • memory/1440-23-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-42-0x0000000010000000-0x000000001000D000-memory.dmp

    Filesize

    52KB

  • memory/2764-53-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-41-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-67-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-43-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-45-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-47-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-49-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-51-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-39-0x0000000010000000-0x000000001000D000-memory.dmp

    Filesize

    52KB

  • memory/2764-55-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-57-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-59-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-61-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-63-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2764-65-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/2980-33-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB