Analysis

  • max time kernel
    158s
  • max time network
    165s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    17-03-2022 18:05

General

  • Target

    f29a84321fabdce9f9d614c88f497b8b88e8adf2c2062367942c80c004c5e267.dll

  • Size

    222KB

  • MD5

    7c95b94cff9fa1a65e66d690b47c8163

  • SHA1

    377eac66ec5b855659f8fe12c2fe8ba884c79a70

  • SHA256

    f29a84321fabdce9f9d614c88f497b8b88e8adf2c2062367942c80c004c5e267

  • SHA512

    025bc7166a83a4fdf08f5243a9a942eaf5638cba7b806f7e34c89b6ab3a45726fe2448e10844286ba44b8550316ada2039b7f39b72015fead820970140781c19

Malware Config

Extracted

Family

emotet

Botnet

Epoch2

C2

197.87.160.216:80

78.188.225.105:80

50.116.111.59:8080

173.249.20.233:443

188.165.214.98:8080

188.219.31.12:80

157.245.99.39:8080

172.125.40.123:80

62.30.7.67:443

120.150.60.189:80

109.74.5.95:8080

67.10.155.92:80

67.170.250.203:443

2.58.16.89:8080

186.74.215.34:80

202.141.243.254:443

118.83.154.64:443

172.86.188.251:8080

37.187.72.193:8080

87.106.139.101:8080

rsa_pubkey.plain

Signatures

  • Emotet

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

  • Emotet3 2 IoCs
  • Blocklisted process makes network request 4 IoCs
  • Loads dropped DLL 1 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 10 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\f29a84321fabdce9f9d614c88f497b8b88e8adf2c2062367942c80c004c5e267.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3152
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\f29a84321fabdce9f9d614c88f497b8b88e8adf2c2062367942c80c004c5e267.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:2832
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Tjxa\nsbi.ots",RunDLL
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        PID:3536

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\SysWOW64\Tjxa\nsbi.ots

    MD5

    7c95b94cff9fa1a65e66d690b47c8163

    SHA1

    377eac66ec5b855659f8fe12c2fe8ba884c79a70

    SHA256

    f29a84321fabdce9f9d614c88f497b8b88e8adf2c2062367942c80c004c5e267

    SHA512

    025bc7166a83a4fdf08f5243a9a942eaf5638cba7b806f7e34c89b6ab3a45726fe2448e10844286ba44b8550316ada2039b7f39b72015fead820970140781c19

  • memory/2832-134-0x0000000002BE0000-0x0000000002BFF000-memory.dmp

    Filesize

    124KB

  • memory/3536-138-0x0000000000C60000-0x0000000000C7F000-memory.dmp

    Filesize

    124KB