Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    02-04-2023 07:48

General

  • Target

    cc4f80bbbd81cf14599c74e9f8e970ac.exe

  • Size

    150KB

  • MD5

    cc4f80bbbd81cf14599c74e9f8e970ac

  • SHA1

    c73b8e764bd16cc885143dee674a18ac98a1199c

  • SHA256

    1dc9a3c5d28e2e20b5bbbfd229a356ec88364280fa19ecdf0882a9533e7de3b3

  • SHA512

    74beb8e33636186fec989c47e7a91f6d1a33acf450557bf1188b4160b841ededed890fb0ccbb04ffc80d4aecc463da4ac70e224b2b4e762eaa5520003f7cfd5a

  • SSDEEP

    3072:v/0zSzwIPgTY2nTnIKAlrym0jzGtnOfLn6bdVsPH6:HJXPPAIKPmIgOzn6bkf6

Score
10/10

Malware Config

Extracted

Family

systembc

C2

89.203.249.203:4035

gamelom20.com:4035

Signatures

  • SystemBC

    SystemBC is a proxy and remote administration tool first seen in 2019.

  • Executes dropped EXE 1 IoCs
  • Looks up external IP address via web service 4 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Uses Tor communications 1 TTPs

    Malware can proxy its traffic through Tor for more anonymity.

  • Drops file in Windows directory 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cc4f80bbbd81cf14599c74e9f8e970ac.exe
    "C:\Users\Admin\AppData\Local\Temp\cc4f80bbbd81cf14599c74e9f8e970ac.exe"
    1⤵
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    PID:1676
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {DEE23502-ADA1-4D62-8FAC-EE2E0806EDB9} S-1-5-18:NT AUTHORITY\System:Service:
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1196
    • C:\ProgramData\raawsd\egwokjj.exe
      C:\ProgramData\raawsd\egwokjj.exe start
      2⤵
      • Executes dropped EXE
      PID:1728

Network

MITRE ATT&CK Matrix ATT&CK v6

Command and Control

Connection Proxy

1
T1090

Replay Monitor

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Downloads

  • C:\ProgramData\raawsd\egwokjj.exe
    Filesize

    150KB

    MD5

    cc4f80bbbd81cf14599c74e9f8e970ac

    SHA1

    c73b8e764bd16cc885143dee674a18ac98a1199c

    SHA256

    1dc9a3c5d28e2e20b5bbbfd229a356ec88364280fa19ecdf0882a9533e7de3b3

    SHA512

    74beb8e33636186fec989c47e7a91f6d1a33acf450557bf1188b4160b841ededed890fb0ccbb04ffc80d4aecc463da4ac70e224b2b4e762eaa5520003f7cfd5a

  • C:\ProgramData\raawsd\egwokjj.exe
    Filesize

    150KB

    MD5

    cc4f80bbbd81cf14599c74e9f8e970ac

    SHA1

    c73b8e764bd16cc885143dee674a18ac98a1199c

    SHA256

    1dc9a3c5d28e2e20b5bbbfd229a356ec88364280fa19ecdf0882a9533e7de3b3

    SHA512

    74beb8e33636186fec989c47e7a91f6d1a33acf450557bf1188b4160b841ededed890fb0ccbb04ffc80d4aecc463da4ac70e224b2b4e762eaa5520003f7cfd5a

  • memory/1676-55-0x0000000000020000-0x0000000000029000-memory.dmp
    Filesize

    36KB

  • memory/1676-56-0x0000000000400000-0x0000000003314000-memory.dmp
    Filesize

    47.1MB

  • memory/1728-70-0x0000000000400000-0x0000000003314000-memory.dmp
    Filesize

    47.1MB