Analysis

  • max time kernel
    134s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220310-en
  • submitted
    17-03-2022 18:12

General

  • Target

    64aeb7b2dd3a6e812eb3e19f2db39abe8b11e4c891b35a379a849653eda5a3ba.dll

  • Size

    217KB

  • MD5

    c1a0c3a9d0ada4a304f9482b9e6ac443

  • SHA1

    c153b804ecae4d27029c0cb8d60a33b338a89fbd

  • SHA256

    64aeb7b2dd3a6e812eb3e19f2db39abe8b11e4c891b35a379a849653eda5a3ba

  • SHA512

    097a9b14acfbb77dc46130f220ba5a438016b8b0c587ddddd2122e029e4f3f4ec08310ef945e1651a0953929350ccf5f9c6a8e232066fc829b931af8754eb5f5

Malware Config

Extracted

Family

emotet

Botnet

Epoch2

C2

173.70.61.180:80

59.21.235.119:80

50.116.111.59:8080

173.249.20.233:443

188.165.214.98:8080

72.188.173.74:80

74.40.205.197:443

64.207.182.168:8080

97.120.3.198:80

190.29.166.0:80

123.176.25.234:80

155.186.9.160:80

138.68.87.218:443

139.99.158.11:443

78.24.219.147:8080

58.1.242.115:80

108.21.72.56:443

188.219.31.12:80

70.180.33.202:80

181.171.209.241:443

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 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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\64aeb7b2dd3a6e812eb3e19f2db39abe8b11e4c891b35a379a849653eda5a3ba.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3428
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\64aeb7b2dd3a6e812eb3e19f2db39abe8b11e4c891b35a379a849653eda5a3ba.dll,#1
      2⤵
      • Drops file in System32 directory
      • Suspicious behavior: RenamesItself
      • Suspicious use of WriteProcessMemory
      PID:532
      • C:\Windows\SysWOW64\rundll32.exe
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Bjcn\tdtdc.ysf",RunDLL
        3⤵
        • Blocklisted process makes network request
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        PID:2448

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Windows\SysWOW64\Bjcn\tdtdc.ysf

    MD5

    c1a0c3a9d0ada4a304f9482b9e6ac443

    SHA1

    c153b804ecae4d27029c0cb8d60a33b338a89fbd

    SHA256

    64aeb7b2dd3a6e812eb3e19f2db39abe8b11e4c891b35a379a849653eda5a3ba

    SHA512

    097a9b14acfbb77dc46130f220ba5a438016b8b0c587ddddd2122e029e4f3f4ec08310ef945e1651a0953929350ccf5f9c6a8e232066fc829b931af8754eb5f5

  • memory/532-134-0x0000000002B60000-0x0000000002B7F000-memory.dmp

    Filesize

    124KB

  • memory/2448-138-0x0000000002A40000-0x0000000002A5F000-memory.dmp

    Filesize

    124KB