Analysis

  • max time kernel
    27s
  • max time network
    47s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 22:53

General

  • Target

    851db52b91b76c02a25a09cc7190a3edd6d80ffbc7e4afad71811efb6250a46c.exe

  • Size

    4.2MB

  • MD5

    639db6c0e03b54807b00cc21ca94ec3d

  • SHA1

    737506ecb6b600727b34defc79bcaefab6e7099d

  • SHA256

    851db52b91b76c02a25a09cc7190a3edd6d80ffbc7e4afad71811efb6250a46c

  • SHA512

    d2b99ce68e069152efd3af6596094337f224b06a6127bc55b0d6fb978674831c62cce8eff437da5af420074f9f8b38658583dea1591aa794ec1132869ad1e850

  • SSDEEP

    49152:F+kmxHJOgH/XnjMZ1A0wyuunfwZU5BcumjKbUT9FiJSyaYlQmEbp7YuwZkE:FZma4X0JuZKb62auDElZwm

Malware Config

Signatures

  • Registers COM server for autorun 1 TTPs 4 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Checks installed software on the system 1 TTPs

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

  • Drops Chrome extension 3 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 8 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 8 IoCs
  • Modifies Internet Explorer settings 1 TTPs 8 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 10 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs
  • System policy modification 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\851db52b91b76c02a25a09cc7190a3edd6d80ffbc7e4afad71811efb6250a46c.exe
    "C:\Users\Admin\AppData\Local\Temp\851db52b91b76c02a25a09cc7190a3edd6d80ffbc7e4afad71811efb6250a46c.exe"
    1⤵
    • Loads dropped DLL
    • Drops Chrome extension
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:1324
    • C:\Windows\SysWOW64\regsvr32.exe
      regsvr32.exe /s "C:\Program Files (x86)\GoSave\UHora9Sx8kpnSE.x64.dll"
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:520
      • C:\Windows\system32\regsvr32.exe
        /s "C:\Program Files (x86)\GoSave\UHora9Sx8kpnSE.x64.dll"
        3⤵
        • Registers COM server for autorun
        • Loads dropped DLL
        • Installs/modifies Browser Helper Object
        • Modifies Internet Explorer settings
        • Modifies registry class
        PID:1476

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\GoSave\UHora9Sx8kpnSE.dat

    Filesize

    4KB

    MD5

    03c7dfdcb5d59605b9565d84cd836ec4

    SHA1

    7249b119386d9d66f9328ca519978c7ab739659f

    SHA256

    bb82a03d89903a7357c633144babf0a3b523dd342bda57c192cebb8ef407b83d

    SHA512

    507eddd3b7acfbd88a78d28fbe02e643fa835dd6580a8b0dc006769bec3cfc462d77d18be8af219098fcf50137773b896feeae4a0ed5a7ebb88c7d14ef24473f

  • C:\Program Files (x86)\GoSave\UHora9Sx8kpnSE.tlb

    Filesize

    3KB

    MD5

    6bdd6ba23e0c129c5b4fa1a141aa21f6

    SHA1

    beef025f5611f84ce53f24e58435f070f92c064f

    SHA256

    14f706e58b4e332e1bc9b6fc6c650097db6e0ea91ac7ad0064aba01832ddd990

    SHA512

    828d9f58efd731252209ea1ed7d092c9e88190b81272fa704c8cb963f5f9d91172610b90e0bce763c0f5207b10d67d0fc4eb31294fd89dde2a260a19d324bc1b

  • C:\Program Files (x86)\GoSave\UHora9Sx8kpnSE.x64.dll

    Filesize

    882KB

    MD5

    0827270a2d7dca4230839de0511d4280

    SHA1

    264ce2775315b06a37cd51d7152df58e29a11b60

    SHA256

    6863740f9ed110fbf10ef18b8732ada23f4db42e998214ed97a09f5fbdd7571b

    SHA512

    d1bf285d6b084920c8d03170cc317939a6a5a3c8b67f71064478fc02feba512a1bffe7f10da424efd6441e61933af777b70c5ace4dce582a0b2bd3a02bdc76c4

  • \Program Files (x86)\GoSave\UHora9Sx8kpnSE.dll

    Filesize

    750KB

    MD5

    a1e5276fa264891a2394cfb992fef753

    SHA1

    3fc9b45acb1feaf1799f70cf93a965221ffe492e

    SHA256

    7d25cce7e647fbee7c157d7cad8b3a12abb66fa3b992adfede9de78687b69838

    SHA512

    ded2b69d13d0f6dd0b7f1fb0b6e8dd0ff1e6705ef5ecae284421826b630de43f0fc7c7783c3246c9fe31dedf07e35e3051366abcc666dec7ff6fe06416c62fcd

  • \Program Files (x86)\GoSave\UHora9Sx8kpnSE.x64.dll

    Filesize

    882KB

    MD5

    0827270a2d7dca4230839de0511d4280

    SHA1

    264ce2775315b06a37cd51d7152df58e29a11b60

    SHA256

    6863740f9ed110fbf10ef18b8732ada23f4db42e998214ed97a09f5fbdd7571b

    SHA512

    d1bf285d6b084920c8d03170cc317939a6a5a3c8b67f71064478fc02feba512a1bffe7f10da424efd6441e61933af777b70c5ace4dce582a0b2bd3a02bdc76c4

  • \Program Files (x86)\GoSave\UHora9Sx8kpnSE.x64.dll

    Filesize

    882KB

    MD5

    0827270a2d7dca4230839de0511d4280

    SHA1

    264ce2775315b06a37cd51d7152df58e29a11b60

    SHA256

    6863740f9ed110fbf10ef18b8732ada23f4db42e998214ed97a09f5fbdd7571b

    SHA512

    d1bf285d6b084920c8d03170cc317939a6a5a3c8b67f71064478fc02feba512a1bffe7f10da424efd6441e61933af777b70c5ace4dce582a0b2bd3a02bdc76c4

  • memory/520-61-0x0000000000000000-mapping.dmp

  • memory/1324-54-0x0000000076191000-0x0000000076193000-memory.dmp

    Filesize

    8KB

  • memory/1324-55-0x0000000000890000-0x000000000095A000-memory.dmp

    Filesize

    808KB

  • memory/1476-65-0x0000000000000000-mapping.dmp

  • memory/1476-66-0x000007FEFC171000-0x000007FEFC173000-memory.dmp

    Filesize

    8KB