Analysis

  • max time kernel
    105s
  • max time network
    92s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    30-09-2021 10:41

General

  • Target

    siera.xml.dll

  • Size

    463KB

  • MD5

    09a0006a40e28e19088a28f94cb97ac6

  • SHA1

    00689427c38d38c5f15e809ec32b4f694a354faf

  • SHA256

    2386996976337ff4bc0e5624822dcc7bd97d847b0e546f58068c35c1808276b0

  • SHA512

    0dcb2c1b5842a1b77a70b42aaa54900ef5d6a978658993b3f2d8b8f96a679c0c48b03b46a0cbf5b456941630aec97db04352e62cbd43918a0fc4bcec025995c4

Malware Config

Extracted

Family

qakbot

Version

402.363

Botnet

tr

Campaign

1632817399

C2

105.198.236.99:443

140.82.49.12:443

37.210.152.224:995

89.101.97.139:443

81.241.252.59:2078

27.223.92.142:995

81.250.153.227:2222

73.151.236.31:443

47.22.148.6:443

122.11.220.212:2222

120.151.47.189:443

199.27.127.129:443

216.201.162.158:443

136.232.34.70:443

76.25.142.196:443

181.118.183.94:443

120.150.218.241:995

185.250.148.74:443

95.77.223.148:443

75.66.88.33:443

Signatures

  • Qakbot/Qbot

    Qbot or Qakbot is a sophisticated worm with banking capabilities.

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\siera.xml.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4060
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\siera.xml.dll,#1
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:408
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:644
        • C:\Windows\SysWOW64\schtasks.exe
          "C:\Windows\system32\schtasks.exe" /Create /RU "NT AUTHORITY\SYSTEM" /tn uufrtvczup /tr "regsvr32.exe -s \"C:\Users\Admin\AppData\Local\Temp\siera.xml.dll\"" /SC ONCE /Z /ST 12:44 /ET 12:56
          4⤵
          • Creates scheduled task(s)
          PID:3168

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Replay Monitor

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Downloads

  • memory/408-114-0x0000000000000000-mapping.dmp
  • memory/408-116-0x0000000010000000-0x0000000010081000-memory.dmp
    Filesize

    516KB

  • memory/408-115-0x0000000010000000-0x0000000010021000-memory.dmp
    Filesize

    132KB

  • memory/408-117-0x0000000002FD0000-0x0000000002FD1000-memory.dmp
    Filesize

    4KB

  • memory/644-118-0x0000000000000000-mapping.dmp
  • memory/644-119-0x0000000002D50000-0x0000000002D71000-memory.dmp
    Filesize

    132KB

  • memory/3168-120-0x0000000000000000-mapping.dmp