Analysis

  • max time kernel
    36s
  • max time network
    89s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    24-02-2021 23:17

General

  • Target

    7f54263ee3f5afa94723199f2cca754e818ee1c4a42a6efcd50bca1a27580112.dll

  • Size

    188KB

  • MD5

    00c96d4aaffc02d630b1df8ff1db61b7

  • SHA1

    93df16255fc1c8a0d3169fd0a1bbd2643f932563

  • SHA256

    7f54263ee3f5afa94723199f2cca754e818ee1c4a42a6efcd50bca1a27580112

  • SHA512

    1ce09c7364a5f8700b4e4df1447a837968878f523075234a497c7494d2bf29d9aa901901077659febfcf1c19891abb2e0a4b3b826e30f8067f2f04c86f039326

Malware Config

Extracted

Family

dridex

Botnet

111

C2

209.151.236.42:443

91.121.94.86:8172

5.189.144.136:6516

rc4.plain
rc4.plain

Signatures

  • Dridex

    Dridex(known as Bugat/Cridex) is a form of malware that specializes in stealing bank credentials.

  • Dridex Loader 2 IoCs

    Detects Dridex both x86 and x64 loader in memory.

  • Blocklisted process makes network request 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\7f54263ee3f5afa94723199f2cca754e818ee1c4a42a6efcd50bca1a27580112.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2044
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\7f54263ee3f5afa94723199f2cca754e818ee1c4a42a6efcd50bca1a27580112.dll,#1
      2⤵
      • Blocklisted process makes network request
      • Checks whether UAC is enabled
      PID:1624

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1624-2-0x0000000000000000-mapping.dmp
  • memory/1624-3-0x0000000075251000-0x0000000075253000-memory.dmp
    Filesize

    8KB

  • memory/1624-4-0x0000000074B80000-0x0000000074D23000-memory.dmp
    Filesize

    1.6MB

  • memory/1624-5-0x0000000074EF0000-0x0000000074F21000-memory.dmp
    Filesize

    196KB

  • memory/1624-6-0x0000000000170000-0x0000000000176000-memory.dmp
    Filesize

    24KB

  • memory/1624-7-0x0000000074EF0000-0x0000000074F0F000-memory.dmp
    Filesize

    124KB

  • memory/1656-8-0x000007FEF77C0000-0x000007FEF7A3A000-memory.dmp
    Filesize

    2.5MB