Analysis

  • max time kernel
    574s
  • max time network
    586s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    24-01-2021 19:01

General

  • Target

    E3-20210122_102153.dll

  • Size

    330KB

  • MD5

    1513d704c7ac8b9fac87b48e8ff7df42

  • SHA1

    b1e87ec3c5c5e94d4dcab79eee1bc934a219c96a

  • SHA256

    8851470f7775abc97093e764fd32641c4e55e1f510a0ae697b168107c04d9d40

  • SHA512

    c19fbbdec405743e04cfe3b399cf2b87c8bef8f3c133368d4d0b404be7525e54c165f4c4dfda3ba262326237e19ebbae9331b70085b8fb87d143634ccdfadaf3

Malware Config

Extracted

Family

emotet

Botnet

Epoch3

C2

190.55.186.229:80

203.157.152.9:7080

157.245.145.87:443

109.99.146.210:8080

116.202.10.123:8080

172.96.190.154:8080

163.53.204.180:443

190.107.118.125:80

91.93.3.85:8080

185.142.236.163:443

115.79.195.246:80

120.51.34.254:80

192.210.217.94:8080

198.20.228.9:8080

91.75.75.46:80

54.38.143.245:8080

161.49.84.2:80

162.144.145.58:8080

178.33.167.120:8080

201.193.160.196:80

rsa_pubkey.plain

Signatures

  • Emotet

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

  • Blocklisted process makes network request 10 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.

  • Suspicious behavior: EnumeratesProcesses 22 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\E3-20210122_102153.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4768
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\E3-20210122_102153.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:4844
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Whalrsaykzyflf\hkjlskjqirfws.evy",RyGfyb
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1932
        • C:\Windows\SysWOW64\rundll32.exe
          C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Whalrsaykzyflf\hkjlskjqirfws.evy",#1
          4⤵
          • Blocklisted process makes network request
          • Suspicious behavior: EnumeratesProcesses
          PID:4352

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1932-3-0x0000000000000000-mapping.dmp

  • memory/4352-6-0x0000000000000000-mapping.dmp

  • memory/4844-2-0x0000000000000000-mapping.dmp

  • memory/4844-4-0x0000000003460000-0x000000000347F000-memory.dmp

    Filesize

    124KB

  • memory/4844-5-0x0000000010000000-0x0000000010023000-memory.dmp

    Filesize

    140KB