Analysis

  • max time kernel
    140s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    06/01/2024, 08:00

General

  • Target

    45b39d0575267a17712f716d68352100.exe

  • Size

    115KB

  • MD5

    45b39d0575267a17712f716d68352100

  • SHA1

    9c18edf331f5d7cf85d7702b948e2f701adffea4

  • SHA256

    ea801a99e152464150f61dda3f0456917d439caa95008624e88b0551abc5bf63

  • SHA512

    ea419f525f11eab61da9345a557e4061c2106bd78242a7adf259324889121129cdad198242b4e5763da8a874e3039f4c88a351d413cf7705bbf16ecf0e4ca965

  • SSDEEP

    3072:SKcWmjRrz3ZKcWmjRrz3Vsj03ytoF+Qnkc53UvVraLn:hGyGVT3ooF+Qnkc5k5aL

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Drops file in Windows directory 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\dw20.exe
    dw20.exe -x -s 368
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    PID:3016
  • C:\Windows\CTS.exe
    "C:\Windows\CTS.exe"
    1⤵
    • Executes dropped EXE
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    PID:2364
  • C:\Users\Admin\AppData\Local\Temp\JG5zZKaAo8N96RP.exe
    C:\Users\Admin\AppData\Local\Temp\JG5zZKaAo8N96RP.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:2756
  • C:\Users\Admin\AppData\Local\Temp\45b39d0575267a17712f716d68352100.exe
    "C:\Users\Admin\AppData\Local\Temp\45b39d0575267a17712f716d68352100.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Windows directory
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2304

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\JG5zZKaAo8N96RP.exe

    Filesize

    56KB

    MD5

    e115521ba14b75f53dcdff087ec6898f

    SHA1

    87103a892bb514a93d485fba221bacb9da3aae25

    SHA256

    59b284d0ad4c2634938e70fae67d9048bd98422d052fbd745a9b80b5fae7ae29

    SHA512

    ab3d097bcf11bf7327a28124052b210f5fb13b9bfb9b7376cae1ba5c30182a330506935288a7fe06b7e3fdd82b57f5c31638f1c301738342819c772b346fa35a

  • C:\Windows\CTS.exe

    Filesize

    59KB

    MD5

    5efd390d5f95c8191f5ac33c4db4b143

    SHA1

    42d81b118815361daa3007f1a40f1576e9a9e0bc

    SHA256

    6028434636f349d801465f77af3a1e387a9c5032942ca6cadb6506d0800f2a74

    SHA512

    720fbe253483dc034307a57a2860c8629a760f883603198d1213f5290b7f236bf0f5f237728ebed50962be83dc7dc4abe61a1e9a55218778495fc6580eb20b3d

  • memory/2304-11-0x0000000000BE0000-0x0000000000BF7000-memory.dmp

    Filesize

    92KB

  • memory/2304-7-0x0000000000070000-0x0000000000087000-memory.dmp

    Filesize

    92KB

  • memory/2304-0-0x0000000000BE0000-0x0000000000BF7000-memory.dmp

    Filesize

    92KB

  • memory/2364-13-0x0000000001120000-0x0000000001137000-memory.dmp

    Filesize

    92KB

  • memory/2364-20-0x0000000001120000-0x0000000001137000-memory.dmp

    Filesize

    92KB

  • memory/2756-17-0x000007FEF57D0000-0x000007FEF616D000-memory.dmp

    Filesize

    9.6MB

  • memory/2756-18-0x0000000000B70000-0x0000000000BF0000-memory.dmp

    Filesize

    512KB

  • memory/2756-21-0x000007FEF57D0000-0x000007FEF616D000-memory.dmp

    Filesize

    9.6MB

  • memory/3016-19-0x0000000000570000-0x0000000000571000-memory.dmp

    Filesize

    4KB