Analysis

  • max time kernel
    144s
  • max time network
    158s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    17-03-2022 17:57

General

  • Target

    223dba4dce9481a83a8b0b4f47eac1fda7b83bbd510344158150dc74aebb95dd.dll

  • Size

    223KB

  • MD5

    09ce430ebb63e4f6b1a0899343c5ee6b

  • SHA1

    44ca2c1b2b7f423f3445225534d2ff8c5a0e5bf1

  • SHA256

    223dba4dce9481a83a8b0b4f47eac1fda7b83bbd510344158150dc74aebb95dd

  • SHA512

    5f31826743ddd9bc75be6d3304a86534ec4926e52507e51f6385f88cff4082f57486a7a1959b4d73fc5d48038de76bb99acaf11a17d890fb60779c09b5442776

Malware Config

Extracted

Family

emotet

Botnet

Epoch2

C2

97.120.3.198:80

70.180.33.202:80

50.116.111.59:8080

173.249.20.233:443

188.165.214.98:8080

172.104.97.173:8080

41.185.28.84:8080

120.150.218.241:443

217.20.166.178:7080

67.10.155.92:80

188.219.31.12:80

120.150.60.189:80

108.21.72.56:443

186.74.215.34:80

144.217.7.207:7080

152.170.205.73:80

49.205.182.134:80

187.161.206.24:80

95.213.236.64:8080

74.40.205.197:443

rsa_pubkey.plain

Signatures

  • Emotet

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

  • Emotet3 2 IoCs
  • Blocklisted process makes network request 3 IoCs
  • Loads dropped DLL 1 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.

  • 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 2 IoCs
  • Modifies data under HKEY_USERS 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 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\223dba4dce9481a83a8b0b4f47eac1fda7b83bbd510344158150dc74aebb95dd.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1076
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\223dba4dce9481a83a8b0b4f47eac1fda7b83bbd510344158150dc74aebb95dd.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:3660
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Dpij\srbh.cni",RunDLL
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        PID:3952
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k netsvcs -p
    1⤵
    • Drops file in System32 directory
    • Checks processor information in registry
    • Enumerates system info in registry
    PID:3608
  • C:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k LocalService -p -s LicenseManager
    1⤵
    • Modifies data under HKEY_USERS
    PID:4376

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Windows\SysWOW64\Dpij\srbh.cni

    MD5

    09ce430ebb63e4f6b1a0899343c5ee6b

    SHA1

    44ca2c1b2b7f423f3445225534d2ff8c5a0e5bf1

    SHA256

    223dba4dce9481a83a8b0b4f47eac1fda7b83bbd510344158150dc74aebb95dd

    SHA512

    5f31826743ddd9bc75be6d3304a86534ec4926e52507e51f6385f88cff4082f57486a7a1959b4d73fc5d48038de76bb99acaf11a17d890fb60779c09b5442776

  • memory/3660-134-0x0000000000C00000-0x0000000000C1F000-memory.dmp

    Filesize

    124KB

  • memory/3952-138-0x00000000007D0000-0x00000000007EF000-memory.dmp

    Filesize

    124KB