Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7-20220718-en
  • resource tags

    arch:x64arch:x86image:win7-20220718-enlocale:en-usos:windows7-x64system
  • submitted
    27-07-2022 14:19

General

  • Target

    August PO#17526NR2600.exe

  • Size

    463KB

  • MD5

    a59cd30ab95f36253b463cd3ee7b9bbc

  • SHA1

    3db7af3754a358220e1f9d83a97f3846f57e6ace

  • SHA256

    9afa8ea8064c15e349caad45d31c18c41349080c4ed1d35fdd3472659736a19b

  • SHA512

    fa649e81dd7dca0e1937b0c22ffe1a881c3b95160fbe3e272bc89ebabf75632c9d6e2597b9b71db3b7f2fff4a71ea080992aa25c4d80164ed7771a464609a0f7

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

103.153.79.240:1234

Attributes
  • communication_password

    e10adc3949ba59abbe56e057f20f883e

  • tor_process

    tor

Signatures

  • BitRAT

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

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 5 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\August PO#17526NR2600.exe
    "C:\Users\Admin\AppData\Local\Temp\August PO#17526NR2600.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1800
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:896
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      2⤵
        PID:1984
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
        2⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1520
        • C:\Users\Admin\AppData\Local\Temp\nm70Nh3yKFl7QC0r.exe
          "C:\Users\Admin\AppData\Local\Temp\nm70Nh3yKFl7QC0r.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:704

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\nm70Nh3yKFl7QC0r.exe

      Filesize

      3.8MB

      MD5

      086686330159cbeae2d5c94b25967fa9

      SHA1

      19f3571b45823fcf1b1c05cdd25f1c98c45c712a

      SHA256

      f93e5dfa75e3edfabc8bd414b9beaa735ccd8a91b12f9c57bb923aa5c3232e9d

      SHA512

      9ff98a9211162972fcbb277ce1d5cffea39303a25e7209b8a8a3d7ed0e135630b3dee122323c725022a078c462634b34c82ace4baf3680cedc1865f9c27dbba5

    • C:\Users\Admin\AppData\Local\Temp\nm70Nh3yKFl7QC0r.exe

      Filesize

      3.8MB

      MD5

      086686330159cbeae2d5c94b25967fa9

      SHA1

      19f3571b45823fcf1b1c05cdd25f1c98c45c712a

      SHA256

      f93e5dfa75e3edfabc8bd414b9beaa735ccd8a91b12f9c57bb923aa5c3232e9d

      SHA512

      9ff98a9211162972fcbb277ce1d5cffea39303a25e7209b8a8a3d7ed0e135630b3dee122323c725022a078c462634b34c82ace4baf3680cedc1865f9c27dbba5

    • \Users\Admin\AppData\Local\Temp\nm70Nh3yKFl7QC0r.exe

      Filesize

      3.8MB

      MD5

      086686330159cbeae2d5c94b25967fa9

      SHA1

      19f3571b45823fcf1b1c05cdd25f1c98c45c712a

      SHA256

      f93e5dfa75e3edfabc8bd414b9beaa735ccd8a91b12f9c57bb923aa5c3232e9d

      SHA512

      9ff98a9211162972fcbb277ce1d5cffea39303a25e7209b8a8a3d7ed0e135630b3dee122323c725022a078c462634b34c82ace4baf3680cedc1865f9c27dbba5

    • \Users\Admin\AppData\Local\Temp\nm70Nh3yKFl7QC0r.exe

      Filesize

      3.8MB

      MD5

      086686330159cbeae2d5c94b25967fa9

      SHA1

      19f3571b45823fcf1b1c05cdd25f1c98c45c712a

      SHA256

      f93e5dfa75e3edfabc8bd414b9beaa735ccd8a91b12f9c57bb923aa5c3232e9d

      SHA512

      9ff98a9211162972fcbb277ce1d5cffea39303a25e7209b8a8a3d7ed0e135630b3dee122323c725022a078c462634b34c82ace4baf3680cedc1865f9c27dbba5

    • \Users\Admin\AppData\Local\Temp\nm70Nh3yKFl7QC0r.exe

      Filesize

      3.8MB

      MD5

      086686330159cbeae2d5c94b25967fa9

      SHA1

      19f3571b45823fcf1b1c05cdd25f1c98c45c712a

      SHA256

      f93e5dfa75e3edfabc8bd414b9beaa735ccd8a91b12f9c57bb923aa5c3232e9d

      SHA512

      9ff98a9211162972fcbb277ce1d5cffea39303a25e7209b8a8a3d7ed0e135630b3dee122323c725022a078c462634b34c82ace4baf3680cedc1865f9c27dbba5

    • \Users\Admin\AppData\Local\Temp\nm70Nh3yKFl7QC0r.exe

      Filesize

      3.8MB

      MD5

      086686330159cbeae2d5c94b25967fa9

      SHA1

      19f3571b45823fcf1b1c05cdd25f1c98c45c712a

      SHA256

      f93e5dfa75e3edfabc8bd414b9beaa735ccd8a91b12f9c57bb923aa5c3232e9d

      SHA512

      9ff98a9211162972fcbb277ce1d5cffea39303a25e7209b8a8a3d7ed0e135630b3dee122323c725022a078c462634b34c82ace4baf3680cedc1865f9c27dbba5

    • memory/704-91-0x00000000003F0000-0x00000000003FA000-memory.dmp

      Filesize

      40KB

    • memory/704-90-0x00000000003F0000-0x00000000003FA000-memory.dmp

      Filesize

      40KB

    • memory/704-89-0x00000000003F0000-0x00000000003FA000-memory.dmp

      Filesize

      40KB

    • memory/704-88-0x00000000003F0000-0x00000000003FA000-memory.dmp

      Filesize

      40KB

    • memory/704-83-0x0000000000000000-mapping.dmp

    • memory/896-62-0x000000006EB60000-0x000000006F10B000-memory.dmp

      Filesize

      5.7MB

    • memory/896-61-0x000000006EB60000-0x000000006F10B000-memory.dmp

      Filesize

      5.7MB

    • memory/896-58-0x0000000000000000-mapping.dmp

    • memory/896-60-0x000000006EB60000-0x000000006F10B000-memory.dmp

      Filesize

      5.7MB

    • memory/1520-66-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1520-63-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1520-77-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1520-78-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1520-68-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1520-69-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1520-64-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1520-73-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1520-71-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1520-85-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1520-74-0x000000000040AE9E-mapping.dmp

    • memory/1520-70-0x0000000000400000-0x000000000043F000-memory.dmp

      Filesize

      252KB

    • memory/1800-54-0x00000000003C0000-0x000000000043A000-memory.dmp

      Filesize

      488KB

    • memory/1800-57-0x0000000076291000-0x0000000076293000-memory.dmp

      Filesize

      8KB

    • memory/1800-56-0x0000000002160000-0x00000000021F2000-memory.dmp

      Filesize

      584KB

    • memory/1800-55-0x0000000001F40000-0x0000000001FB4000-memory.dmp

      Filesize

      464KB