Analysis

  • max time kernel
    122s
  • max time network
    132s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    31/12/2023, 06:16

General

  • Target

    2b6ee5fea0fc43edde0a5bd1ce7d4129.exe

  • Size

    252KB

  • MD5

    2b6ee5fea0fc43edde0a5bd1ce7d4129

  • SHA1

    fdabf23b44541350d180940973592941c68ea0b8

  • SHA256

    8dcf2f94a2591da198c64974e9f002234ce46d5025fdd9cc0153b05a0c6eb23f

  • SHA512

    68cb02e523563df313f9f138ce2e51baf4f0f42f46ac15aac84bdd3408d25c8bac5b2e82c457623ef275d82026340730f7c85815cf9a24b4db1049451f56aaeb

  • SSDEEP

    6144:2H1DOpz75+ZPPfnE2Qyn20UKujkZpGQTZ75+ZPPfnE2Qyn20Ul:q1DSF+ZPPfnEUnpfF+ZPPfnEUnu

Malware Config

Signatures

  • ACProtect 1.3x - 1.4x DLL software 2 IoCs

    Detects file using ACProtect software.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 10 IoCs
  • UPX packed file 4 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Installs/modifies Browser Helper Object 2 TTPs 3 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 23 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2b6ee5fea0fc43edde0a5bd1ce7d4129.exe
    "C:\Users\Admin\AppData\Local\Temp\2b6ee5fea0fc43edde0a5bd1ce7d4129.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1808
    • C:\Windows\SysWOW64\regsvr32.exe
      C:\Windows\system32\regsvr32.exe /s "C:\Program Files (x86)\WTool\WTool.dll"
      2⤵
      • Loads dropped DLL
      • Installs/modifies Browser Helper Object
      • Modifies Internet Explorer settings
      • Modifies registry class
      PID:2928
    • C:\Program Files (x86)\WTool\WTool.exe
      "C:\Program Files (x86)\WTool\WTool.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2740
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32 /s "C:\Program Files (x86)\WTool\WTool.dll"
        3⤵
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:2640
    • C:\Windows\SysWOW64\explorer.exe
      C:\Windows\system32\explorer.exe
      2⤵
      • Deletes itself
      PID:2236

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Program Files (x86)\WTool\WTool.dll

          Filesize

          146KB

          MD5

          4384b57433ddf169434e30a2fceef826

          SHA1

          24fbb3599c2c9bf0ac9fe2ab88b650f13dcf46d4

          SHA256

          18006520170ea7badad0af34dd7606f037e437f0d63ac480a60798a4892003c1

          SHA512

          c3f65ac92849b06d87de026c193c75e33dd363d38a928cb93f744949dd9dddf519434a8e22f66dc12e372ea567d5eebf368d52dbeb57a24686736702267d96ae

        • \Program Files (x86)\WTool\WTool.exe

          Filesize

          38KB

          MD5

          39d5364ed5033a59e539eaa59ca638a9

          SHA1

          e53018d37d6847588b3d55cfc9cc251ba9325473

          SHA256

          7548e744f60eea0debf32c45711523659f50fe2d21ffa33984ee94f89ecd4951

          SHA512

          d84ed9fc2d4ec37b04bb9c2fc5ca4caa91d83c42aac9cc4955194cfd723cc0ac0641e925253b67cfe2fa99ec0c2d2091023891ae58841a9b320930de9d364aa2

        • \Users\Admin\AppData\Local\Temp\nst5B1C.tmp\IpConfig.dll

          Filesize

          114KB

          MD5

          a3ed6f7ea493b9644125d494fbf9a1e6

          SHA1

          ebeee67fb0b5b3302c69f47c5e7fca62e1a809d8

          SHA256

          ec0f85f8a9d6b77081ba0103f967ef6705b547bf27bcd866d77ac909d21a1e08

          SHA512

          7099e1bc78ba5727661aa49f75523126563a5ebccdff10cabf868ce5335821118384825f037fbf1408c416c0212aa702a5974bc54d1b63c9d0bcade140f9aae1

        • \Users\Admin\AppData\Local\Temp\nst5B1C.tmp\NSISdl.dll

          Filesize

          14KB

          MD5

          a5f8399a743ab7f9c88c645c35b1ebb5

          SHA1

          168f3c158913b0367bf79fa413357fbe97018191

          SHA256

          dacc88a12d3ba438fdae3535dc7a5a1d389bce13adc993706424874a782e51c9

          SHA512

          824e567f5211bf09c7912537c7836d761b0934207612808e9a191f980375c6a97383dbc6b4a7121c6b5f508cbfd7542a781d6b6b196ca24841f73892eec5e977

        • \Users\Admin\AppData\Local\Temp\nst5B1C.tmp\SelfDel.dll

          Filesize

          4KB

          MD5

          7cff7fe2caea5184d98c147e7e263132

          SHA1

          21f39d3d0dd5f7198d67ef30e95d10ae3460093e

          SHA256

          281c39b733579e031c62bdd247b41543ece1fe3bd6eda26fc8ad474b10f33101

          SHA512

          fb1161b8571d1d0c67e2df0d571b08f5e7a73f81409aed847344154d02406910629181bcce4e18e998ec472f51a6a1b40d956a010abdd10e850413aafa87808a

        • \Users\Admin\AppData\Local\Temp\nst5B1C.tmp\UAC.dll

          Filesize

          13KB

          MD5

          29858669d7da388d1e62b4fd5337af12

          SHA1

          756b94898429a9025a04ae227f060952f1149a5f

          SHA256

          c24c005daa7f5578c4372b38d1be6be5e27ef3ba2cdb9b67fee15cac406eba62

          SHA512

          6f4d538f2fe0681f357bab73f633943c539ddc1451efa1d1bb76d70bb47aa68a05849e36ae405cc4664598a8194227fa7053de6dbce7d6c52a20301293b3c85f

        • \Users\Admin\AppData\Local\Temp\nst5B1C.tmp\fct.dll

          Filesize

          4KB

          MD5

          e3f3809f51c7982d96aaf9c090f7d176

          SHA1

          7494daa8000c0b31c58d94edc509232569a4606f

          SHA256

          010f5e0c69b4a630b08b2551e03d8044a33350f151848dcf50953407012fab29

          SHA512

          3fca284e384abc95201dc73f19bd9d75413e8890e819967070b9d9991115be2a8c17e07bd1aaaffcbc770b393bf9a2af253100ac4d9efba8d21110bac97737fc

        • \Users\Admin\AppData\Local\Temp\nst5B1C.tmp\nsProcess.dll

          Filesize

          4KB

          MD5

          05450face243b3a7472407b999b03a72

          SHA1

          ffd88af2e338ae606c444390f7eaaf5f4aef2cd9

          SHA256

          95fe9d92512ff2318cc2520311ef9145b2cee01209ab0e1b6e45c7ce1d4d0e89

          SHA512

          f4cbe30166aff20a226a7150d93a876873ba699d80d7e9f46f32a9b4753fa7966c3113a3124340b39ca67a13205463a413e740e541e742903e3f89af5a53ad3b

        • memory/1808-31-0x00000000028D0000-0x00000000028F6000-memory.dmp

          Filesize

          152KB

        • memory/1808-0-0x0000000000400000-0x0000000000447000-memory.dmp

          Filesize

          284KB

        • memory/1808-48-0x0000000074350000-0x0000000074359000-memory.dmp

          Filesize

          36KB

        • memory/1808-64-0x0000000000400000-0x0000000000447000-memory.dmp

          Filesize

          284KB

        • memory/2236-65-0x0000000000190000-0x00000000001D0000-memory.dmp

          Filesize

          256KB