Analysis

  • max time kernel
    150s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    14-03-2023 19:19

General

  • Target

    zapitvane marko bulgaria eood.rtf

  • Size

    3KB

  • MD5

    93671555d60537ba07df133dda8592a2

  • SHA1

    396ab1b853fac12d406bc1687cf18cb0a2cc061e

  • SHA256

    833747fe3feaca3e71a38cc66ee5003a846fc43a61e8a59e093a23c5b260ef90

  • SHA512

    8d03fcc1a697a8150ce7d2325e65a329d8d870a185b66cdb9ae70c84aecd9983913c12b48902d2b3f7553378617dee533363ac759bef1c8c502903f3016d6a6f

Score
10/10

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

74.201.28.92:3569

Attributes
  • communication_password

    148b191cf4e80b549e1b1a4444f2bdf6

  • tor_process

    tor

Signatures

  • BitRAT

    BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

  • Blocklisted process makes network request 5 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 1 IoCs
  • Uses the VBS compiler for execution 1 TTPs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 7 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Windows directory 1 IoCs
  • Office loads VBA resources, possible macro or embedded object present
  • Creates scheduled task(s) 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\zapitvane marko bulgaria eood.rtf"
    1⤵
    • Drops file in Windows directory
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:316
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:544
    • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
      "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
      1⤵
      • Blocklisted process makes network request
      • Loads dropped DLL
      • Launches Equation Editor
      • Suspicious use of WriteProcessMemory
      PID:436
      • C:\Users\Admin\AppData\Roaming\hjpy.exe
        C:\Users\Admin\AppData\Roaming\hjpy.exe
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1576
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
          3⤵
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:1792
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\tewu"
          3⤵
            PID:1520
          • C:\Windows\SysWOW64\cmd.exe
            "cmd" /c copy "C:\Users\Admin\AppData\Roaming\hjpy.exe" "C:\Users\Admin\AppData\Roaming\tewu\tewu.exe"
            3⤵
              PID:2028
            • C:\Windows\SysWOW64\cmd.exe
              "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\tewu\tewu.exe'" /f
              3⤵
              • Suspicious use of WriteProcessMemory
              PID:1012
              • C:\Windows\SysWOW64\schtasks.exe
                schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\tewu\tewu.exe'" /f
                4⤵
                • Creates scheduled task(s)
                PID:620
        • C:\Windows\system32\taskeng.exe
          taskeng.exe {8D640145-7C90-4E65-9E7A-6A4DD6A0EA71} S-1-5-21-2647223082-2067913677-935928954-1000:BPOQNXYB\Admin:Interactive:[1]
          1⤵
          • Suspicious use of WriteProcessMemory
          PID:1520
          • C:\Users\Admin\AppData\Roaming\tewu\tewu.exe
            C:\Users\Admin\AppData\Roaming\tewu\tewu.exe
            2⤵
            • Executes dropped EXE
            • Suspicious use of SetThreadContext
            • Suspicious use of WriteProcessMemory
            PID:620
            • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
              "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
              3⤵
              • Suspicious use of NtSetInformationThreadHideFromDebugger
              • Suspicious use of AdjustPrivilegeToken
              PID:1156
            • C:\Windows\SysWOW64\cmd.exe
              "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\tewu"
              3⤵
                PID:744
              • C:\Windows\SysWOW64\cmd.exe
                "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\tewu\tewu.exe'" /f
                3⤵
                  PID:276
                  • C:\Windows\SysWOW64\schtasks.exe
                    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\tewu\tewu.exe'" /f
                    4⤵
                    • Creates scheduled task(s)
                    PID:1516
                • C:\Windows\SysWOW64\cmd.exe
                  "cmd" /c copy "C:\Users\Admin\AppData\Roaming\tewu\tewu.exe" "C:\Users\Admin\AppData\Roaming\tewu\tewu.exe"
                  3⤵
                    PID:1608
                • C:\Users\Admin\AppData\Roaming\tewu\tewu.exe
                  C:\Users\Admin\AppData\Roaming\tewu\tewu.exe
                  2⤵
                  • Executes dropped EXE
                  • Suspicious use of SetThreadContext
                  PID:1080
                  • C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
                    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
                    3⤵
                    • Suspicious use of NtSetInformationThreadHideFromDebugger
                    • Suspicious use of AdjustPrivilegeToken
                    PID:1088
                  • C:\Windows\SysWOW64\cmd.exe
                    "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\tewu"
                    3⤵
                      PID:1776
                    • C:\Windows\SysWOW64\cmd.exe
                      "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\tewu\tewu.exe'" /f
                      3⤵
                        PID:1704
                        • C:\Windows\SysWOW64\schtasks.exe
                          schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Roaming\tewu\tewu.exe'" /f
                          4⤵
                          • Creates scheduled task(s)
                          PID:928
                      • C:\Windows\SysWOW64\cmd.exe
                        "cmd" /c copy "C:\Users\Admin\AppData\Roaming\tewu\tewu.exe" "C:\Users\Admin\AppData\Roaming\tewu\tewu.exe"
                        3⤵
                          PID:1128

                    Network

                    MITRE ATT&CK Enterprise v6

                    Replay Monitor

                    Loading Replay Monitor...

                    Downloads

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

                      Filesize

                      61KB

                      MD5

                      e71c8443ae0bc2e282c73faead0a6dd3

                      SHA1

                      0c110c1b01e68edfacaeae64781a37b1995fa94b

                      SHA256

                      95b0a5acc5bf70d3abdfd091d0c9f9063aa4fde65bd34dbf16786082e1992e72

                      SHA512

                      b38458c7fa2825afb72794f374827403d5946b1132e136a0ce075dfd351277cf7d957c88dc8a1e4adc3bcae1fa8010dae3831e268e910d517691de24326391a6

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

                      Filesize

                      342B

                      MD5

                      af0cfb60d294005f72659aa228214fa1

                      SHA1

                      2e06c92112008f7667a9ce34e48278848b6634df

                      SHA256

                      db68a99933b59a96f5be4b1bd08a84e5c2ed31f5df35f7ef9e0cd6820e521857

                      SHA512

                      8e6228fbca315702b1295c891d3b1b9c4da320b557e953b4da3267e2f1e0a5a308642e56286eb5d718a1d57b81b6973f61b9dc9c7e9145318247f11b8b12ab25

                    • C:\Users\Admin\AppData\Local\Temp\Cab2C13.tmp

                      Filesize

                      61KB

                      MD5

                      fc4666cbca561e864e7fdf883a9e6661

                      SHA1

                      2f8d6094c7a34bf12ea0bbf0d51ee9c5bb7939a5

                      SHA256

                      10f3deb6c452d749a7451b5d065f4c0449737e5ee8a44f4d15844b503141e65b

                      SHA512

                      c71f54b571e01f247f072be4bbebdf5d8410b67eb79a61e7e0d9853fe857ab9bd12f53e6af3394b935560178107291fc4be351b27deb388eba90ba949633d57d

                    • C:\Users\Admin\AppData\Local\Temp\Tar2F54.tmp

                      Filesize

                      161KB

                      MD5

                      be2bec6e8c5653136d3e72fe53c98aa3

                      SHA1

                      a8182d6db17c14671c3d5766c72e58d87c0810de

                      SHA256

                      1919aab2a820642490169bdc4e88bd1189e22f83e7498bf8ebdfb62ec7d843fd

                      SHA512

                      0d1424ccdf0d53faf3f4e13d534e12f22388648aa4c23edbc503801e3c96b7f73c7999b760b5bef4b5e9dd923dffe21a21889b1ce836dd428420bf0f4f5327ff

                    • C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm

                      Filesize

                      20KB

                      MD5

                      d58a5ff7c5002a8f46937c2a31d98aa9

                      SHA1

                      ecca7e76a741cb0e29a550b4fe6584a10feec7b7

                      SHA256

                      7ab2120452b457cdb92b19552d2d50ab3de73e3e084912f30ad11ec610e81235

                      SHA512

                      af93ca72801c90b5fc4306ad0726e98d90d3fe12a3d06bb6fcb9618484bc6fa2876df572378e3ea97c4d75b8ee524cc9deb4bb7d25642d48ee1421da12db9fcd

                    • C:\Users\Admin\AppData\Roaming\hjpy.exe

                      Filesize

                      3.8MB

                      MD5

                      d07b7112b39c9eee7eaeba1adb099543

                      SHA1

                      1df70cc161540228240e1dde290ac2f5efcfbb0c

                      SHA256

                      1c0493090eb306714a26e5a30404947c325dc75410adf4ee4ea18ea159302b9a

                      SHA512

                      9f82564e59b49e503de3aad4b7a28a163b3de543a807522c48c5b6f3a005cb38b37e99fab6865e0e064be9c1cf6e2cbec616e7cbb2218ea9f1fbd2015ef9e135

                    • C:\Users\Admin\AppData\Roaming\hjpy.exe

                      Filesize

                      3.8MB

                      MD5

                      d07b7112b39c9eee7eaeba1adb099543

                      SHA1

                      1df70cc161540228240e1dde290ac2f5efcfbb0c

                      SHA256

                      1c0493090eb306714a26e5a30404947c325dc75410adf4ee4ea18ea159302b9a

                      SHA512

                      9f82564e59b49e503de3aad4b7a28a163b3de543a807522c48c5b6f3a005cb38b37e99fab6865e0e064be9c1cf6e2cbec616e7cbb2218ea9f1fbd2015ef9e135

                    • C:\Users\Admin\AppData\Roaming\hjpy.exe

                      Filesize

                      3.8MB

                      MD5

                      d07b7112b39c9eee7eaeba1adb099543

                      SHA1

                      1df70cc161540228240e1dde290ac2f5efcfbb0c

                      SHA256

                      1c0493090eb306714a26e5a30404947c325dc75410adf4ee4ea18ea159302b9a

                      SHA512

                      9f82564e59b49e503de3aad4b7a28a163b3de543a807522c48c5b6f3a005cb38b37e99fab6865e0e064be9c1cf6e2cbec616e7cbb2218ea9f1fbd2015ef9e135

                    • C:\Users\Admin\AppData\Roaming\tewu\tewu.exe

                      Filesize

                      3.8MB

                      MD5

                      d07b7112b39c9eee7eaeba1adb099543

                      SHA1

                      1df70cc161540228240e1dde290ac2f5efcfbb0c

                      SHA256

                      1c0493090eb306714a26e5a30404947c325dc75410adf4ee4ea18ea159302b9a

                      SHA512

                      9f82564e59b49e503de3aad4b7a28a163b3de543a807522c48c5b6f3a005cb38b37e99fab6865e0e064be9c1cf6e2cbec616e7cbb2218ea9f1fbd2015ef9e135

                    • C:\Users\Admin\AppData\Roaming\tewu\tewu.exe

                      Filesize

                      3.8MB

                      MD5

                      d07b7112b39c9eee7eaeba1adb099543

                      SHA1

                      1df70cc161540228240e1dde290ac2f5efcfbb0c

                      SHA256

                      1c0493090eb306714a26e5a30404947c325dc75410adf4ee4ea18ea159302b9a

                      SHA512

                      9f82564e59b49e503de3aad4b7a28a163b3de543a807522c48c5b6f3a005cb38b37e99fab6865e0e064be9c1cf6e2cbec616e7cbb2218ea9f1fbd2015ef9e135

                    • C:\Users\Admin\AppData\Roaming\tewu\tewu.exe

                      Filesize

                      3.8MB

                      MD5

                      d07b7112b39c9eee7eaeba1adb099543

                      SHA1

                      1df70cc161540228240e1dde290ac2f5efcfbb0c

                      SHA256

                      1c0493090eb306714a26e5a30404947c325dc75410adf4ee4ea18ea159302b9a

                      SHA512

                      9f82564e59b49e503de3aad4b7a28a163b3de543a807522c48c5b6f3a005cb38b37e99fab6865e0e064be9c1cf6e2cbec616e7cbb2218ea9f1fbd2015ef9e135

                    • \Users\Admin\AppData\Roaming\hjpy.exe

                      Filesize

                      3.8MB

                      MD5

                      d07b7112b39c9eee7eaeba1adb099543

                      SHA1

                      1df70cc161540228240e1dde290ac2f5efcfbb0c

                      SHA256

                      1c0493090eb306714a26e5a30404947c325dc75410adf4ee4ea18ea159302b9a

                      SHA512

                      9f82564e59b49e503de3aad4b7a28a163b3de543a807522c48c5b6f3a005cb38b37e99fab6865e0e064be9c1cf6e2cbec616e7cbb2218ea9f1fbd2015ef9e135

                    • memory/316-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

                      Filesize

                      64KB

                    • memory/620-215-0x0000000000CC0000-0x0000000000D00000-memory.dmp

                      Filesize

                      256KB

                    • memory/620-211-0x0000000001110000-0x00000000014E4000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1080-264-0x0000000001110000-0x00000000014E4000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1088-288-0x0000000000400000-0x00000000007CE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1088-291-0x0000000000400000-0x00000000007CE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1156-228-0x0000000000400000-0x00000000007CE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1156-224-0x0000000000400000-0x00000000007CE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1156-223-0x0000000000400000-0x00000000007CE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1576-150-0x00000000051F0000-0x0000000005230000-memory.dmp

                      Filesize

                      256KB

                    • memory/1576-149-0x0000000001290000-0x0000000001664000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-187-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-201-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-180-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-181-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-182-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-183-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-184-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-185-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-186-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-178-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-188-0x0000000000160000-0x000000000016A000-memory.dmp

                      Filesize

                      40KB

                    • memory/1792-189-0x0000000000160000-0x000000000016A000-memory.dmp

                      Filesize

                      40KB

                    • memory/1792-190-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-192-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-193-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-194-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-195-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-197-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-196-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-198-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-200-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-179-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-202-0x0000000000160000-0x000000000016A000-memory.dmp

                      Filesize

                      40KB

                    • memory/1792-203-0x0000000000160000-0x000000000016A000-memory.dmp

                      Filesize

                      40KB

                    • memory/1792-204-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-207-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-177-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-168-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-164-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-159-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-158-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

                      Filesize

                      4KB

                    • memory/1792-157-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-226-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-227-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-156-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-229-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-231-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-155-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-154-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-153-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-152-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB

                    • memory/1792-151-0x0000000000410000-0x00000000007DE000-memory.dmp

                      Filesize

                      3.8MB