Analysis

  • max time kernel
    148s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    11-10-2022 19:58

General

  • Target

    7b6570a85ef1600456266810593fd5e2de186f34ed7868ace12148ec14f8812e.exe

  • Size

    941KB

  • MD5

    752ce2568a7b41a0fcbbc5f417ffccc3

  • SHA1

    864e7e6514a207df0b70066eecd6126becb1ff09

  • SHA256

    7b6570a85ef1600456266810593fd5e2de186f34ed7868ace12148ec14f8812e

  • SHA512

    70e58cde454e360df36784f48b2795a96d4f8fadc797d6667bff73a4b217518584177972398eaa5d12d082301ee8bd37c148d05b0da39ffb51b5da6650f84538

  • SSDEEP

    12288:5at0EAH49n8B7CnN/j2+T0BWLkGLbWgNIwY6Cuw78YOJEn1GUEVQqYHQFOH9LPsN:It24RNj2+TGqkOhNSu68GGUEtsh7N10N

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 8 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • NirSoft MailPassView 3 IoCs

    Password recovery tool for various email clients

  • Nirsoft 3 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 16 IoCs

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

  • Loads dropped DLL 6 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 56 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\7b6570a85ef1600456266810593fd5e2de186f34ed7868ace12148ec14f8812e.exe
    "C:\Users\Admin\AppData\Local\Temp\7b6570a85ef1600456266810593fd5e2de186f34ed7868ace12148ec14f8812e.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1376
    • C:\Users\Admin\AcrbRd32.exe
      "C:\Users\Admin\AcrbRd32.exe" qVyh.BVI
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1316
      • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
        "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1412
        • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
          /scomma "C:\Users\Admin\AppData\Local\Temp\6ZHHUCInfu.ini"
          4⤵
            PID:2032
          • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
            /scomma "C:\Users\Admin\AppData\Local\Temp\iRGkZeVYnL.ini"
            4⤵
            • Accesses Microsoft Outlook accounts
            PID:1980
        • C:\Windows\SysWOW64\WScript.exe
          "C:\Windows\System32\WScript.exe" "C:\Users\Admin\run.vbs"
          3⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:368
          • C:\Users\Admin\AcrbRd32.exe
            "C:\Users\Admin\AcrbRd32.exe" qVyh.BVI
            4⤵
            • Modifies visiblity of hidden/system files in Explorer
            • Executes dropped EXE
            • Adds Run key to start application
            • Checks whether UAC is enabled
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:1164
            • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
              "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe"
              5⤵
              • Suspicious use of SetThreadContext
              • Suspicious use of SetWindowsHookEx
              • Suspicious use of WriteProcessMemory
              PID:560
              • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
                /scomma "C:\Users\Admin\AppData\Local\Temp\DeoMJeE96z.ini"
                6⤵
                  PID:2044
                • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
                  /scomma "C:\Users\Admin\AppData\Local\Temp\ddkzjdAoNY.ini"
                  6⤵
                    PID:1808
                • C:\Windows\SysWOW64\WScript.exe
                  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\run.vbs"
                  5⤵
                  • Loads dropped DLL
                  PID:920
                  • C:\Users\Admin\AcrbRd32.exe
                    "C:\Users\Admin\AcrbRd32.exe" qVyh.BVI
                    6⤵
                    • Executes dropped EXE
                    PID:1688

        Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AcrbRd32.exe

          Filesize

          915KB

          MD5

          e01ced5c12390ff5256694eda890b33a

          SHA1

          0bb74a9d3154d1269e5e456aa41e94b60f753f78

          SHA256

          66c1f3e71685f81f836e29e77844c737ceaa47ff787d6b233b05166973fa73ba

          SHA512

          93a35ef3749826c1256c4de0fffe099374dbc5cd3d8eccf22690cf2a4c7e63b508ddbe4e412758a84f9c6e9478b5173a6cf93606779af18542d5a2937183219d

        • C:\Users\Admin\AcrbRd32.exe

          Filesize

          915KB

          MD5

          e01ced5c12390ff5256694eda890b33a

          SHA1

          0bb74a9d3154d1269e5e456aa41e94b60f753f78

          SHA256

          66c1f3e71685f81f836e29e77844c737ceaa47ff787d6b233b05166973fa73ba

          SHA512

          93a35ef3749826c1256c4de0fffe099374dbc5cd3d8eccf22690cf2a4c7e63b508ddbe4e412758a84f9c6e9478b5173a6cf93606779af18542d5a2937183219d

        • C:\Users\Admin\AcrbRd32.exe

          Filesize

          915KB

          MD5

          e01ced5c12390ff5256694eda890b33a

          SHA1

          0bb74a9d3154d1269e5e456aa41e94b60f753f78

          SHA256

          66c1f3e71685f81f836e29e77844c737ceaa47ff787d6b233b05166973fa73ba

          SHA512

          93a35ef3749826c1256c4de0fffe099374dbc5cd3d8eccf22690cf2a4c7e63b508ddbe4e412758a84f9c6e9478b5173a6cf93606779af18542d5a2937183219d

        • C:\Users\Admin\AcrbRd32.exe

          Filesize

          915KB

          MD5

          e01ced5c12390ff5256694eda890b33a

          SHA1

          0bb74a9d3154d1269e5e456aa41e94b60f753f78

          SHA256

          66c1f3e71685f81f836e29e77844c737ceaa47ff787d6b233b05166973fa73ba

          SHA512

          93a35ef3749826c1256c4de0fffe099374dbc5cd3d8eccf22690cf2a4c7e63b508ddbe4e412758a84f9c6e9478b5173a6cf93606779af18542d5a2937183219d

        • C:\Users\Admin\AppData\Local\Temp\6ZHHUCInfu.ini

          Filesize

          5B

          MD5

          d1ea279fb5559c020a1b4137dc4de237

          SHA1

          db6f8988af46b56216a6f0daf95ab8c9bdb57400

          SHA256

          fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

          SHA512

          720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

        • C:\Users\Admin\AppData\Local\Temp\DeoMJeE96z.ini

          Filesize

          5B

          MD5

          d1ea279fb5559c020a1b4137dc4de237

          SHA1

          db6f8988af46b56216a6f0daf95ab8c9bdb57400

          SHA256

          fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

          SHA512

          720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

        • C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\STARTM~1\Programs\Startup\start.lnk

          Filesize

          758B

          MD5

          c04372dac2a74e3235d151d993f30861

          SHA1

          542f13d91b84d19a3f406dfbcfd7a034068f8456

          SHA256

          f16f1a42ef06ce47370687db860ce5bf5e22bac80975c1f952f55cb30dadd84d

          SHA512

          577f83dd572515b9ac887ef4fda4844793f68c151e1c6c8687d429bd1a958f79ce967f7c75973291bb03f11e02e33e3446ee36236696b3c7fd5f58b3c118044a

        • C:\Users\Admin\fqNvzVucd.WFW

          Filesize

          176B

          MD5

          1228f4d84a443e3d51b75f8eb64c1512

          SHA1

          b50c2d7b56347eff07caaa9cb5a4e03e21efd17f

          SHA256

          5fb2f55f742ac03bd5a3abe456d0d20759d7edfe28019d7c1e537207371b51e1

          SHA512

          eb31a83149d55af2693e4658217dbbc510b0972be26ade4d9141f9a7693fff41d0cac68c94f5a7c4025acf77f0bce9ecf184345f6a125c1f8144b5922e9469be

        • C:\Users\Admin\hfOIwMh.IYB

          Filesize

          260KB

          MD5

          ed3eca3289c83b6d3c968b39c7c5b62a

          SHA1

          2c61640cc67926638e7584a4045e7d29cb95b0ba

          SHA256

          2242aee6f8ecb743d05f06dddd20545d833bf1b11362b9f8cead0b2791eb8ecc

          SHA512

          ebb5ad68773bf5566ae7c2f93a667224a3060b18bbbf1638eb59c0a49475c3fc9d797ed77ed0895dcf5fdf1e6d37706dc0965db54828f496c6b92868206fdb36

        • C:\Users\Admin\qVyh.BVI

          Filesize

          32.7MB

          MD5

          9e013adda1d29031a077de6f7d5f4611

          SHA1

          30af3e0fd8de2a3a80ca8e00784724bb50ca572e

          SHA256

          653506def41220c523a49df251f861a84507174ff1e7bf0e5a2c4e662d30f8f0

          SHA512

          0e33d6670e88047509bf28c0e3c64327bf35d397908367b15404ac858e8f0506f38e2705f19aec32c74f49f7ba1dfc6fafa92ea0c8b285102990fbdd1f43c76d

        • C:\Users\Admin\run.vbs

          Filesize

          89B

          MD5

          a12b2136ef3b5697cff8528aafc904fe

          SHA1

          d911834b5f8b0c7b71f4f8e2258d510c1e42e9e9

          SHA256

          0738ae023c1220e39d62a54db1f19f8eab832c1e8787b0858574056bf2cfc43c

          SHA512

          99d58123ce2dbcc8a702da42c6bf8a2d2f1ee0bd5e4eba8f43da0ee757ca074fb3c57546ee103b4976109fdb7d7a0ad59cf2da75f4becde22055db315d8bdb47

        • \Users\Admin\AcrbRd32.exe

          Filesize

          915KB

          MD5

          e01ced5c12390ff5256694eda890b33a

          SHA1

          0bb74a9d3154d1269e5e456aa41e94b60f753f78

          SHA256

          66c1f3e71685f81f836e29e77844c737ceaa47ff787d6b233b05166973fa73ba

          SHA512

          93a35ef3749826c1256c4de0fffe099374dbc5cd3d8eccf22690cf2a4c7e63b508ddbe4e412758a84f9c6e9478b5173a6cf93606779af18542d5a2937183219d

        • \Users\Admin\AcrbRd32.exe

          Filesize

          915KB

          MD5

          e01ced5c12390ff5256694eda890b33a

          SHA1

          0bb74a9d3154d1269e5e456aa41e94b60f753f78

          SHA256

          66c1f3e71685f81f836e29e77844c737ceaa47ff787d6b233b05166973fa73ba

          SHA512

          93a35ef3749826c1256c4de0fffe099374dbc5cd3d8eccf22690cf2a4c7e63b508ddbe4e412758a84f9c6e9478b5173a6cf93606779af18542d5a2937183219d

        • \Users\Admin\AcrbRd32.exe

          Filesize

          915KB

          MD5

          e01ced5c12390ff5256694eda890b33a

          SHA1

          0bb74a9d3154d1269e5e456aa41e94b60f753f78

          SHA256

          66c1f3e71685f81f836e29e77844c737ceaa47ff787d6b233b05166973fa73ba

          SHA512

          93a35ef3749826c1256c4de0fffe099374dbc5cd3d8eccf22690cf2a4c7e63b508ddbe4e412758a84f9c6e9478b5173a6cf93606779af18542d5a2937183219d

        • \Users\Admin\AcrbRd32.exe

          Filesize

          915KB

          MD5

          e01ced5c12390ff5256694eda890b33a

          SHA1

          0bb74a9d3154d1269e5e456aa41e94b60f753f78

          SHA256

          66c1f3e71685f81f836e29e77844c737ceaa47ff787d6b233b05166973fa73ba

          SHA512

          93a35ef3749826c1256c4de0fffe099374dbc5cd3d8eccf22690cf2a4c7e63b508ddbe4e412758a84f9c6e9478b5173a6cf93606779af18542d5a2937183219d

        • \Users\Admin\AcrbRd32.exe

          Filesize

          915KB

          MD5

          e01ced5c12390ff5256694eda890b33a

          SHA1

          0bb74a9d3154d1269e5e456aa41e94b60f753f78

          SHA256

          66c1f3e71685f81f836e29e77844c737ceaa47ff787d6b233b05166973fa73ba

          SHA512

          93a35ef3749826c1256c4de0fffe099374dbc5cd3d8eccf22690cf2a4c7e63b508ddbe4e412758a84f9c6e9478b5173a6cf93606779af18542d5a2937183219d

        • \Users\Admin\AcrbRd32.exe

          Filesize

          915KB

          MD5

          e01ced5c12390ff5256694eda890b33a

          SHA1

          0bb74a9d3154d1269e5e456aa41e94b60f753f78

          SHA256

          66c1f3e71685f81f836e29e77844c737ceaa47ff787d6b233b05166973fa73ba

          SHA512

          93a35ef3749826c1256c4de0fffe099374dbc5cd3d8eccf22690cf2a4c7e63b508ddbe4e412758a84f9c6e9478b5173a6cf93606779af18542d5a2937183219d

        • memory/560-129-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/560-125-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/1376-54-0x0000000075091000-0x0000000075093000-memory.dmp

          Filesize

          8KB

        • memory/1412-97-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/1412-82-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/1412-65-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/1412-67-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/1412-96-0x0000000000400000-0x0000000000442000-memory.dmp

          Filesize

          264KB

        • memory/1980-90-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/1980-86-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/1980-93-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/1980-92-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/1980-95-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/1980-94-0x0000000000400000-0x000000000041F000-memory.dmp

          Filesize

          124KB

        • memory/2032-74-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2032-84-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2032-83-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2032-81-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2032-80-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2032-78-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2044-122-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2044-123-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2044-124-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB

        • memory/2044-120-0x0000000000400000-0x0000000000453000-memory.dmp

          Filesize

          332KB