Analysis

  • max time kernel
    152s
  • max time network
    182s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    08-05-2022 06:21

General

  • Target

    bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe

  • Size

    263KB

  • MD5

    8144dd88fc6b522c1e68937c820a8ad0

  • SHA1

    3551922adcacbfc72c7fe7db3f17396a6e84c6da

  • SHA256

    bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424

  • SHA512

    bd4f910d630f9a0160262bfb929d23807737e1a1bbc2974a88edb8de6a14f05787a2cdbd40197abe223be84eede55cc348aaf9a76434e9ccd4499dfb2db00835

Score
10/10

Malware Config

Signatures

  • OnlyLogger

    A tiny loader that uses IPLogger to get its payload.

  • OnlyLogger Payload 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 8 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe
    "C:\Users\Admin\AppData\Local\Temp\bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1492
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 612
      2⤵
      • Program crash
      PID:2188
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 652
      2⤵
      • Program crash
      PID:932
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 648
      2⤵
      • Program crash
      PID:244
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 636
      2⤵
      • Program crash
      PID:400
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 744
      2⤵
      • Program crash
      PID:5016
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 1184
      2⤵
      • Program crash
      PID:2260
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 1236
      2⤵
      • Program crash
      PID:3200
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4344
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "bc71bc7f6ce5a6d4502c997d27bf5382221dc736a59cb00c65f68cd0981ad424.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:1080
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1492 -s 1260
      2⤵
      • Program crash
      PID:2664
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1492 -ip 1492
    1⤵
      PID:936
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 1492 -ip 1492
      1⤵
        PID:4860
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1492 -ip 1492
        1⤵
          PID:4580
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1492 -ip 1492
          1⤵
            PID:204
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 1492 -ip 1492
            1⤵
              PID:648
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1492 -ip 1492
              1⤵
                PID:2292
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1492 -ip 1492
                1⤵
                  PID:3568
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1492 -ip 1492
                  1⤵
                    PID:5024

                  Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  • memory/1080-134-0x0000000000000000-mapping.dmp

                  • memory/1492-130-0x0000000000B18000-0x0000000000B40000-memory.dmp

                    Filesize

                    160KB

                  • memory/1492-131-0x0000000000AA0000-0x0000000000AE6000-memory.dmp

                    Filesize

                    280KB

                  • memory/1492-132-0x0000000000400000-0x00000000007FF000-memory.dmp

                    Filesize

                    4.0MB

                  • memory/4344-133-0x0000000000000000-mapping.dmp