Analysis

  • max time kernel
    114s
  • max time network
    116s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    29-03-2021 15:38

General

  • Target

    8fe3fde9e0a98332e4a8b7b65eadd1745c8e1c29b1bfd5974bd018d255e139e9.dll

  • Size

    609KB

  • MD5

    015c80d341a3aebc2b30d6ed28a663b5

  • SHA1

    26b8e9a1ad9b66bc0944f01ace690046f829ad32

  • SHA256

    8fe3fde9e0a98332e4a8b7b65eadd1745c8e1c29b1bfd5974bd018d255e139e9

  • SHA512

    43ba89dc4b7392474b814536ae604040568f2bd15fb1cbf3de29c2aad489f835a2ab7d21ef7975cf036ba997d5de8eeda1540b078e59ca6de4ddb1a0e4798b78

Malware Config

Extracted

Family

emotet

Botnet

Epoch3

C2

190.55.186.229:80

203.157.152.9:7080

157.245.145.87:443

132.248.38.158:80

110.172.180.180:8080

70.32.89.105:8080

161.49.84.2:80

37.46.129.215:8080

50.116.78.109:8080

115.79.195.246:80

178.62.254.156:8080

175.103.38.146:80

188.226.165.170:8080

91.93.3.85:8080

162.144.145.58:8080

117.2.139.117:443

190.85.46.52:7080

201.193.160.196:80

152.32.75.74:443

195.201.56.70:8080

rsa_pubkey.plain

Extracted

Family

emotet

Botnet

LEA

C2

80.158.3.161:443

80.158.51.209:8080

80.158.35.51:80

80.158.63.78:443

80.158.53.167:80

80.158.62.194:443

80.158.59.174:8080

80.158.43.136:80

rsa_pubkey.plain

Signatures

  • Emotet

    Emotet is a trojan that is primarily spread through spam emails.

  • Blocklisted process makes network request 5 IoCs
  • Loads dropped DLL 4 IoCs
  • Drops file in System32 directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious behavior: RenamesItself 2 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\8fe3fde9e0a98332e4a8b7b65eadd1745c8e1c29b1bfd5974bd018d255e139e9.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:384
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\8fe3fde9e0a98332e4a8b7b65eadd1745c8e1c29b1bfd5974bd018d255e139e9.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:1940
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Amdssmyyyh\gkqolattg.rgt",nVQSTVVKuPiiU
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:820
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Amdssmyyyh\gkqolattg.rgt",#1
          4⤵
          • Blocklisted process makes network request
          • Drops file in System32 directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:1552
          • C:\Windows\SysWOW64\rundll32.exe
            C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Amdssmyyyh\almxiktjybihdbe.dll",#1 kAIAADIAAABBAG0AZABzAHMAbQB5AHkAeQBoAFwAZwBrAHEAbwBsAGEAdAB0AGcALgByAGcAdAAAAA==
            5⤵
            • Loads dropped DLL
            • Drops file in System32 directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: RenamesItself
            PID:808

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/684-14-0x000007FEF7300000-0x000007FEF757A000-memory.dmp

    Filesize

    2.5MB

  • memory/808-22-0x0000000000A00000-0x0000000000A11000-memory.dmp

    Filesize

    68KB

  • memory/808-23-0x00000000001D0000-0x00000000001ED000-memory.dmp

    Filesize

    116KB

  • memory/808-24-0x00000000001F0000-0x0000000000210000-memory.dmp

    Filesize

    128KB

  • memory/820-11-0x0000000000241000-0x00000000002A4000-memory.dmp

    Filesize

    396KB

  • memory/1552-13-0x0000000000781000-0x00000000007E4000-memory.dmp

    Filesize

    396KB

  • memory/1940-7-0x0000000000261000-0x00000000002C4000-memory.dmp

    Filesize

    396KB

  • memory/1940-6-0x0000000000190000-0x00000000001B5000-memory.dmp

    Filesize

    148KB

  • memory/1940-3-0x0000000076241000-0x0000000076243000-memory.dmp

    Filesize

    8KB