Analysis

  • max time kernel
    150s
  • max time network
    144s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    19-11-2022 08:42

General

  • Target

    520b8753ec07046c66e9df38fa53b95ffc442fca005b7b0daa30a289dc146b3b.exe

  • Size

    448KB

  • MD5

    526eae80ceb653f775d43213bfe6eb30

  • SHA1

    b5d0e5514c8df40312ad708dac6677f64621de70

  • SHA256

    520b8753ec07046c66e9df38fa53b95ffc442fca005b7b0daa30a289dc146b3b

  • SHA512

    c2c22e35d83786b490c09055a4e28bd2b05952eabe84381e24368edfee21befee06924a844644bb8c92198bddb071c1f73a5007219067aafd35de80d20ad2163

  • SSDEEP

    12288:+q/x7uJJAF++O+oWMa/2BNHhFvkKmKqB:+qtuJu0+nXO9fE

Malware Config

Signatures

  • ISR Stealer

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

  • ISR Stealer payload 6 IoCs
  • NirSoft MailPassView 2 IoCs

    Password recovery tool for various email clients

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

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

  • Drops startup file 1 IoCs
  • Loads dropped DLL 5 IoCs
  • Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 2 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 Internet Explorer settings 1 TTPs 2 IoCs
  • NTFS ADS 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
      PID:1268
      • C:\Users\Admin\AppData\Local\Temp\520b8753ec07046c66e9df38fa53b95ffc442fca005b7b0daa30a289dc146b3b.exe
        "C:\Users\Admin\AppData\Local\Temp\520b8753ec07046c66e9df38fa53b95ffc442fca005b7b0daa30a289dc146b3b.exe"
        2⤵
        • Drops startup file
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1336
        • C:\Users\Admin\AppData\Local\Temp\bot.exe
          "C:\Users\Admin\AppData\Local\Temp\bot.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of SetThreadContext
          • Modifies Internet Explorer settings
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:612
          • C:\Users\Admin\AppData\Roaming\Ufcaa\kawis.exe
            "C:\Users\Admin\AppData\Roaming\Ufcaa\kawis.exe"
            4⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of WriteProcessMemory
            PID:1712
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c "C:\Users\Admin\AppData\Local\Temp\tmpca2ef819.bat"
            4⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:1516
        • C:\Windows\SysWOW64\svchost.exe
          "C:\Windows\system32\svchost.exe"
          3⤵
          • Suspicious use of SetThreadContext
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1676
          • C:\Windows\SysWOW64\svchost.exe
            /scomma "C:\Users\Admin\AppData\Local\Temp\muCoE6GqWC.ini"
            4⤵
              PID:1208
            • C:\Windows\SysWOW64\svchost.exe
              /scomma "C:\Users\Admin\AppData\Local\Temp\iYTNvyNRZe.ini"
              4⤵
              • Accesses Microsoft Outlook accounts
              PID:696
      • C:\Windows\system32\Dwm.exe
        "C:\Windows\system32\Dwm.exe"
        1⤵
          PID:1192
        • C:\Windows\system32\taskhost.exe
          "taskhost.exe"
          1⤵
            PID:1124
          • C:\Windows\system32\DllHost.exe
            C:\Windows\system32\DllHost.exe /Processid:{3EB3C877-1F16-487C-9050-104DBCD66683}
            1⤵
              PID:528
            • C:\Program Files\Windows Mail\WinMail.exe
              "C:\Program Files\Windows Mail\WinMail.exe" -Embedding
              1⤵
              • NTFS ADS
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of SetWindowsHookEx
              PID:1536
            • C:\Windows\system32\conhost.exe
              \??\C:\Windows\system32\conhost.exe "1859174906-6570579231492835977-18459092971135926192-177466481660024591-773999302"
              1⤵
                PID:1552
              • C:\Windows\system32\DllHost.exe
                C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
                1⤵
                  PID:1088
                • C:\Windows\system32\DllHost.exe
                  C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
                  1⤵
                    PID:1344
                  • C:\Windows\system32\DllHost.exe
                    C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
                    1⤵
                      PID:796
                    • C:\Windows\system32\DllHost.exe
                      C:\Windows\system32\DllHost.exe /Processid:{F9717507-6651-4EDB-BFF7-AE615179BCCF}
                      1⤵
                        PID:512

                      Network

                      MITRE ATT&CK Enterprise v6

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

                        Filesize

                        342B

                        MD5

                        f2b7168d051e97e1934d5523dbaa34a9

                        SHA1

                        9d13b6b4bbba53df556f7abb1966ec7092ed078b

                        SHA256

                        d2beb9667700322fec2fe42e9cd70a62f00317f2dcc12fe604826d6f9688b22f

                        SHA512

                        193520d69e502c1bdd722c233a599dd287e62875b162e07d518bfba2b20e4d74b0242471293a4607976561f3fc02a433176e62f2a5ce44ea6f48cc9466e736e1

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

                        Filesize

                        138KB

                        MD5

                        8bc34dd3c77324e7a0874caad19fde32

                        SHA1

                        da110f25eea78d95701391ad016417ae19b827bc

                        SHA256

                        cdf5867f5c5b7edf984965ec5444c58ed56456129a46b32a80891c10377c7805

                        SHA512

                        88ab3bf89206f721061dfd9842d2f86c5c2808cea2d00a992a4200c7ed1b4187d0979ad68a894ba5605f722d6f798106a9be5dff7548359f3ecb8fcbafd9d5bd

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

                        Filesize

                        138KB

                        MD5

                        8bc34dd3c77324e7a0874caad19fde32

                        SHA1

                        da110f25eea78d95701391ad016417ae19b827bc

                        SHA256

                        cdf5867f5c5b7edf984965ec5444c58ed56456129a46b32a80891c10377c7805

                        SHA512

                        88ab3bf89206f721061dfd9842d2f86c5c2808cea2d00a992a4200c7ed1b4187d0979ad68a894ba5605f722d6f798106a9be5dff7548359f3ecb8fcbafd9d5bd

                      • C:\Users\Admin\AppData\Local\Temp\muCoE6GqWC.ini

                        Filesize

                        5B

                        MD5

                        d1ea279fb5559c020a1b4137dc4de237

                        SHA1

                        db6f8988af46b56216a6f0daf95ab8c9bdb57400

                        SHA256

                        fcdcc2c46896915a1c695d6231f0fee336a668531b7a3da46178c80362546dba

                        SHA512

                        720e9c284f0559015312df7fe977563e5e16f48d3506e51eb4016adf7971924d352f740b030aa3adc81b6f65fd1dba12df06d10fa6c115074e5097e7ee0f08b3

                      • C:\Users\Admin\AppData\Local\Temp\tmpca2ef819.bat

                        Filesize

                        185B

                        MD5

                        1f331ae5b1ef2f375b446f44134651c6

                        SHA1

                        bd28f8651f80c8a1ce52722d4cbb9c1d5841b3df

                        SHA256

                        830d9a670658e5be4c21d29a851f65f98e7981e1b8edb6b2a21327ad9cb83250

                        SHA512

                        d8ec4fe786bbb97240c1305157f2b04d4c78cfd45c126c13f135e47e846e12f793e5fc22d92a098e651743e7673cf9807c9540489e3329ec589eed47540dd978

                      • C:\Users\Admin\AppData\Roaming\Syodi\deohy.aqy

                        Filesize

                        337B

                        MD5

                        b027c33fb503a8084b18303dfd199e32

                        SHA1

                        994e64e100c52ff2812d1b1de7cbd367ddeec89f

                        SHA256

                        b8cd2011053ed950b630781df95a449a03db407c98fc460e0b5cf656bedcaab3

                        SHA512

                        29deb900096317cc1af75aa19a442506e7750800cf12f26cc15eccb7dcb6749d4187a8588a0886a8a9c8feceef4f57f3939bf4301f14e91b2953dca28dc19ae8

                      • C:\Users\Admin\AppData\Roaming\Ufcaa\kawis.exe

                        Filesize

                        138KB

                        MD5

                        086dce61ef85a7e758e5049290acd99b

                        SHA1

                        594d9fa40212c0f9caeb386e542af94415c4e159

                        SHA256

                        407fe6112d52f1c0490c4d86f5e91cdf33191ddccdb8f3c918288f60a6e69606

                        SHA512

                        5f7b98362152f718a3809e0b113729e7a8d19b08a0d7958deab958d8f4971adf60e92f834bd47988d4a8f102c97886f382778aebed65bd6586a9ff755fd13fd2

                      • C:\Users\Admin\AppData\Roaming\Ufcaa\kawis.exe

                        Filesize

                        138KB

                        MD5

                        086dce61ef85a7e758e5049290acd99b

                        SHA1

                        594d9fa40212c0f9caeb386e542af94415c4e159

                        SHA256

                        407fe6112d52f1c0490c4d86f5e91cdf33191ddccdb8f3c918288f60a6e69606

                        SHA512

                        5f7b98362152f718a3809e0b113729e7a8d19b08a0d7958deab958d8f4971adf60e92f834bd47988d4a8f102c97886f382778aebed65bd6586a9ff755fd13fd2

                      • \Users\Admin\AppData\Local\Temp\bot.exe

                        Filesize

                        138KB

                        MD5

                        8bc34dd3c77324e7a0874caad19fde32

                        SHA1

                        da110f25eea78d95701391ad016417ae19b827bc

                        SHA256

                        cdf5867f5c5b7edf984965ec5444c58ed56456129a46b32a80891c10377c7805

                        SHA512

                        88ab3bf89206f721061dfd9842d2f86c5c2808cea2d00a992a4200c7ed1b4187d0979ad68a894ba5605f722d6f798106a9be5dff7548359f3ecb8fcbafd9d5bd

                      • \Users\Admin\AppData\Local\Temp\bot.exe

                        Filesize

                        138KB

                        MD5

                        8bc34dd3c77324e7a0874caad19fde32

                        SHA1

                        da110f25eea78d95701391ad016417ae19b827bc

                        SHA256

                        cdf5867f5c5b7edf984965ec5444c58ed56456129a46b32a80891c10377c7805

                        SHA512

                        88ab3bf89206f721061dfd9842d2f86c5c2808cea2d00a992a4200c7ed1b4187d0979ad68a894ba5605f722d6f798106a9be5dff7548359f3ecb8fcbafd9d5bd

                      • \Users\Admin\AppData\Roaming\Ufcaa\kawis.exe

                        Filesize

                        138KB

                        MD5

                        086dce61ef85a7e758e5049290acd99b

                        SHA1

                        594d9fa40212c0f9caeb386e542af94415c4e159

                        SHA256

                        407fe6112d52f1c0490c4d86f5e91cdf33191ddccdb8f3c918288f60a6e69606

                        SHA512

                        5f7b98362152f718a3809e0b113729e7a8d19b08a0d7958deab958d8f4971adf60e92f834bd47988d4a8f102c97886f382778aebed65bd6586a9ff755fd13fd2

                      • \Users\Admin\AppData\Roaming\Ufcaa\kawis.exe

                        Filesize

                        138KB

                        MD5

                        086dce61ef85a7e758e5049290acd99b

                        SHA1

                        594d9fa40212c0f9caeb386e542af94415c4e159

                        SHA256

                        407fe6112d52f1c0490c4d86f5e91cdf33191ddccdb8f3c918288f60a6e69606

                        SHA512

                        5f7b98362152f718a3809e0b113729e7a8d19b08a0d7958deab958d8f4971adf60e92f834bd47988d4a8f102c97886f382778aebed65bd6586a9ff755fd13fd2

                      • \Users\Admin\AppData\Roaming\bCnl5JJWuPD\HiiVlrznz68.exe

                        Filesize

                        448KB

                        MD5

                        526eae80ceb653f775d43213bfe6eb30

                        SHA1

                        b5d0e5514c8df40312ad708dac6677f64621de70

                        SHA256

                        520b8753ec07046c66e9df38fa53b95ffc442fca005b7b0daa30a289dc146b3b

                        SHA512

                        c2c22e35d83786b490c09055a4e28bd2b05952eabe84381e24368edfee21befee06924a844644bb8c92198bddb071c1f73a5007219067aafd35de80d20ad2163

                      • memory/528-142-0x00000000025F0000-0x0000000002617000-memory.dmp

                        Filesize

                        156KB

                      • memory/528-143-0x00000000025F0000-0x0000000002617000-memory.dmp

                        Filesize

                        156KB

                      • memory/612-123-0x0000000000280000-0x00000000002A7000-memory.dmp

                        Filesize

                        156KB

                      • memory/612-122-0x0000000000280000-0x00000000002A7000-memory.dmp

                        Filesize

                        156KB

                      • memory/612-121-0x0000000000280000-0x00000000002A7000-memory.dmp

                        Filesize

                        156KB

                      • memory/612-120-0x0000000000280000-0x00000000002A7000-memory.dmp

                        Filesize

                        156KB

                      • memory/612-124-0x0000000000280000-0x00000000002A7000-memory.dmp

                        Filesize

                        156KB

                      • memory/696-92-0x0000000000400000-0x000000000041F000-memory.dmp

                        Filesize

                        124KB

                      • memory/696-87-0x0000000000400000-0x000000000041F000-memory.dmp

                        Filesize

                        124KB

                      • memory/696-93-0x0000000000400000-0x000000000041F000-memory.dmp

                        Filesize

                        124KB

                      • memory/696-91-0x0000000000400000-0x000000000041F000-memory.dmp

                        Filesize

                        124KB

                      • memory/1124-103-0x0000000000220000-0x0000000000247000-memory.dmp

                        Filesize

                        156KB

                      • memory/1124-105-0x0000000000220000-0x0000000000247000-memory.dmp

                        Filesize

                        156KB

                      • memory/1124-102-0x0000000000220000-0x0000000000247000-memory.dmp

                        Filesize

                        156KB

                      • memory/1124-100-0x0000000000220000-0x0000000000247000-memory.dmp

                        Filesize

                        156KB

                      • memory/1124-104-0x0000000000220000-0x0000000000247000-memory.dmp

                        Filesize

                        156KB

                      • memory/1192-110-0x0000000001AD0000-0x0000000001AF7000-memory.dmp

                        Filesize

                        156KB

                      • memory/1192-111-0x0000000001AD0000-0x0000000001AF7000-memory.dmp

                        Filesize

                        156KB

                      • memory/1192-109-0x0000000001AD0000-0x0000000001AF7000-memory.dmp

                        Filesize

                        156KB

                      • memory/1192-108-0x0000000001AD0000-0x0000000001AF7000-memory.dmp

                        Filesize

                        156KB

                      • memory/1208-78-0x0000000000400000-0x0000000000453000-memory.dmp

                        Filesize

                        332KB

                      • memory/1208-77-0x0000000000400000-0x0000000000453000-memory.dmp

                        Filesize

                        332KB

                      • memory/1208-72-0x0000000000400000-0x0000000000453000-memory.dmp

                        Filesize

                        332KB

                      • memory/1208-81-0x0000000000400000-0x0000000000453000-memory.dmp

                        Filesize

                        332KB

                      • memory/1208-80-0x0000000000400000-0x0000000000453000-memory.dmp

                        Filesize

                        332KB

                      • memory/1268-116-0x0000000002AD0000-0x0000000002AF7000-memory.dmp

                        Filesize

                        156KB

                      • memory/1268-117-0x0000000002AD0000-0x0000000002AF7000-memory.dmp

                        Filesize

                        156KB

                      • memory/1268-115-0x0000000002AD0000-0x0000000002AF7000-memory.dmp

                        Filesize

                        156KB

                      • memory/1268-114-0x0000000002AD0000-0x0000000002AF7000-memory.dmp

                        Filesize

                        156KB

                      • memory/1336-54-0x0000000075B61000-0x0000000075B63000-memory.dmp

                        Filesize

                        8KB

                      • memory/1336-83-0x0000000074510000-0x0000000074ABB000-memory.dmp

                        Filesize

                        5.7MB

                      • memory/1336-74-0x0000000074510000-0x0000000074ABB000-memory.dmp

                        Filesize

                        5.7MB

                      • memory/1516-162-0x0000000000050000-0x0000000000077000-memory.dmp

                        Filesize

                        156KB

                      • memory/1536-128-0x00000000003A0000-0x00000000003B0000-memory.dmp

                        Filesize

                        64KB

                      • memory/1536-134-0x00000000020C0000-0x00000000020D0000-memory.dmp

                        Filesize

                        64KB

                      • memory/1536-126-0x000007FEFB9E1000-0x000007FEFB9E3000-memory.dmp

                        Filesize

                        8KB

                      • memory/1536-127-0x000007FEF5F91000-0x000007FEF5F93000-memory.dmp

                        Filesize

                        8KB

                      • memory/1676-79-0x0000000000400000-0x0000000000442000-memory.dmp

                        Filesize

                        264KB

                      • memory/1676-125-0x0000000000400000-0x0000000000442000-memory.dmp

                        Filesize

                        264KB

                      • memory/1676-65-0x0000000000400000-0x0000000000442000-memory.dmp

                        Filesize

                        264KB

                      • memory/1676-63-0x0000000000400000-0x0000000000442000-memory.dmp

                        Filesize

                        264KB

                      • memory/1676-86-0x0000000000400000-0x0000000000442000-memory.dmp

                        Filesize

                        264KB

                      • memory/1676-61-0x0000000000400000-0x0000000000442000-memory.dmp

                        Filesize

                        264KB

                      • memory/1676-60-0x0000000000400000-0x0000000000442000-memory.dmp

                        Filesize

                        264KB