Analysis

  • max time kernel
    151s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    24-11-2022 05:42

General

  • Target

    82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7.exe

  • Size

    353KB

  • MD5

    1041c042bc8df4867bf695689b9e20f4

  • SHA1

    a622b90ae7c13a44730885b423e648b9c4dfd055

  • SHA256

    82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7

  • SHA512

    c1220c15af19d93b0ce70e654c77ad9ae0ef1cdf196f577ea065fda6a831ae679f33ffa9557afe7a14e5075d4477a8666f8bdb63582dffe8c906b0759fd2d223

  • SSDEEP

    6144:/rYTogh5mqytL07iehf+iO0UnaTLJ/MWujqAclvdrachBbGqV:TDrihO1nILBjYqvoch

Malware Config

Signatures

  • ISR Stealer

    ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

  • ISR Stealer payload 7 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

  • Nirsoft 2 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 9 IoCs

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

  • 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.

  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 57 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7.exe
    "C:\Users\Admin\AppData\Local\Temp\82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1696
    • C:\Users\Admin\AppData\Local\Temp\82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7.exe
      "C:\Users\Admin\AppData\Local\Temp\82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7.exe"
      2⤵
      • Suspicious use of SetThreadContext
      • Modifies system certificate store
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:764
      • C:\Users\Admin\AppData\Local\Temp\82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7.exe
        /scomma "C:\Users\Admin\AppData\Local\Temp\nWJV0CiIoT.ini"
        3⤵
          PID:1276
        • C:\Users\Admin\AppData\Local\Temp\82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\aNmHoTN1Bk.ini"
          3⤵
          • Accesses Microsoft Outlook accounts
          PID:860
      • C:\Users\Admin\AppData\Roaming\Microsoft\IpOverUsbSvrc.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\IpOverUsbSvrc.exe"
        2⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:572
        • C:\Users\Admin\AppData\Roaming\Microsoft\atiesrx.exe
          "C:\Users\Admin\AppData\Roaming\Microsoft\atiesrx.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1712
          • C:\Users\Admin\AppData\Roaming\Microsoft\atiesrx.exe
            "C:\Users\Admin\AppData\Roaming\Microsoft\atiesrx.exe"
            4⤵
            • Executes dropped EXE
            PID:1640

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\nWJV0CiIoT.ini

      Filesize

      5B

      MD5

      d1ea279fb5559c020a1b4137dc4de237

      SHA1

      db6f8988af46b56216a6f0daf95ab8c9bdb57400

      SHA256

      fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

      SHA512

      720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

    • C:\Users\Admin\AppData\Roaming\Microsoft\IpOverUsbSvrc.exe

      Filesize

      11KB

      MD5

      5249a17cb09bb8d857feb19c047a894b

      SHA1

      c9e8a8f6cf2d4f14c68b85f409a2d50a57114c79

      SHA256

      79c10fbcc5f86767857e5193096dcb866dff14e039da6bfa07c7cbd9095b99f1

      SHA512

      56bfecdc10e0d5e89a9fad91a033fe7f81c673e1167cd994fd5f57c126c02563d18d734713da82d3e30e47201920e49059ff169d0ba486d8be835688e0856d23

    • C:\Users\Admin\AppData\Roaming\Microsoft\IpOverUsbSvrc.exe

      Filesize

      11KB

      MD5

      5249a17cb09bb8d857feb19c047a894b

      SHA1

      c9e8a8f6cf2d4f14c68b85f409a2d50a57114c79

      SHA256

      79c10fbcc5f86767857e5193096dcb866dff14e039da6bfa07c7cbd9095b99f1

      SHA512

      56bfecdc10e0d5e89a9fad91a033fe7f81c673e1167cd994fd5f57c126c02563d18d734713da82d3e30e47201920e49059ff169d0ba486d8be835688e0856d23

    • C:\Users\Admin\AppData\Roaming\Microsoft\atiesrx.exe

      Filesize

      353KB

      MD5

      1041c042bc8df4867bf695689b9e20f4

      SHA1

      a622b90ae7c13a44730885b423e648b9c4dfd055

      SHA256

      82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7

      SHA512

      c1220c15af19d93b0ce70e654c77ad9ae0ef1cdf196f577ea065fda6a831ae679f33ffa9557afe7a14e5075d4477a8666f8bdb63582dffe8c906b0759fd2d223

    • C:\Users\Admin\AppData\Roaming\Microsoft\atiesrx.exe

      Filesize

      353KB

      MD5

      1041c042bc8df4867bf695689b9e20f4

      SHA1

      a622b90ae7c13a44730885b423e648b9c4dfd055

      SHA256

      82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7

      SHA512

      c1220c15af19d93b0ce70e654c77ad9ae0ef1cdf196f577ea065fda6a831ae679f33ffa9557afe7a14e5075d4477a8666f8bdb63582dffe8c906b0759fd2d223

    • C:\Users\Admin\AppData\Roaming\Microsoft\atiesrx.exe

      Filesize

      353KB

      MD5

      1041c042bc8df4867bf695689b9e20f4

      SHA1

      a622b90ae7c13a44730885b423e648b9c4dfd055

      SHA256

      82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7

      SHA512

      c1220c15af19d93b0ce70e654c77ad9ae0ef1cdf196f577ea065fda6a831ae679f33ffa9557afe7a14e5075d4477a8666f8bdb63582dffe8c906b0759fd2d223

    • \Users\Admin\AppData\Roaming\Microsoft\IpOverUsbSvrc.exe

      Filesize

      11KB

      MD5

      5249a17cb09bb8d857feb19c047a894b

      SHA1

      c9e8a8f6cf2d4f14c68b85f409a2d50a57114c79

      SHA256

      79c10fbcc5f86767857e5193096dcb866dff14e039da6bfa07c7cbd9095b99f1

      SHA512

      56bfecdc10e0d5e89a9fad91a033fe7f81c673e1167cd994fd5f57c126c02563d18d734713da82d3e30e47201920e49059ff169d0ba486d8be835688e0856d23

    • \Users\Admin\AppData\Roaming\Microsoft\atiesrx.exe

      Filesize

      353KB

      MD5

      1041c042bc8df4867bf695689b9e20f4

      SHA1

      a622b90ae7c13a44730885b423e648b9c4dfd055

      SHA256

      82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7

      SHA512

      c1220c15af19d93b0ce70e654c77ad9ae0ef1cdf196f577ea065fda6a831ae679f33ffa9557afe7a14e5075d4477a8666f8bdb63582dffe8c906b0759fd2d223

    • \Users\Admin\AppData\Roaming\Microsoft\atiesrx.exe

      Filesize

      353KB

      MD5

      1041c042bc8df4867bf695689b9e20f4

      SHA1

      a622b90ae7c13a44730885b423e648b9c4dfd055

      SHA256

      82e2e44047a6f9f754d4d223aa977e16a0724fed7efb7a90b5d6fe5e0976eca7

      SHA512

      c1220c15af19d93b0ce70e654c77ad9ae0ef1cdf196f577ea065fda6a831ae679f33ffa9557afe7a14e5075d4477a8666f8bdb63582dffe8c906b0759fd2d223

    • memory/572-93-0x0000000074E10000-0x00000000753BB000-memory.dmp

      Filesize

      5.7MB

    • memory/572-75-0x0000000000000000-mapping.dmp

    • memory/572-81-0x0000000074E10000-0x00000000753BB000-memory.dmp

      Filesize

      5.7MB

    • memory/764-62-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/764-100-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/764-57-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/764-58-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/764-63-0x0000000000401180-mapping.dmp

    • memory/764-79-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/764-60-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/764-92-0x0000000000400000-0x0000000000442000-memory.dmp

      Filesize

      264KB

    • memory/860-90-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/860-91-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/860-85-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/860-89-0x0000000000400000-0x000000000041F000-memory.dmp

      Filesize

      124KB

    • memory/860-86-0x000000000041C410-mapping.dmp

    • memory/1276-68-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1276-73-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1276-80-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1276-72-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1276-82-0x0000000000400000-0x0000000000453000-memory.dmp

      Filesize

      332KB

    • memory/1276-69-0x00000000004512E0-mapping.dmp

    • memory/1640-110-0x0000000000401180-mapping.dmp

    • memory/1696-102-0x0000000074E10000-0x00000000753BB000-memory.dmp

      Filesize

      5.7MB

    • memory/1696-56-0x0000000074E10000-0x00000000753BB000-memory.dmp

      Filesize

      5.7MB

    • memory/1696-54-0x00000000766D1000-0x00000000766D3000-memory.dmp

      Filesize

      8KB

    • memory/1696-55-0x0000000074E10000-0x00000000753BB000-memory.dmp

      Filesize

      5.7MB

    • memory/1712-99-0x0000000074E10000-0x00000000753BB000-memory.dmp

      Filesize

      5.7MB

    • memory/1712-101-0x0000000074E10000-0x00000000753BB000-memory.dmp

      Filesize

      5.7MB

    • memory/1712-96-0x0000000000000000-mapping.dmp