Analysis

  • max time kernel
    113s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    08-05-2022 06:21

General

  • Target

    405cb81ef326299cf3eee91f8b83c4e1fda30ce5da409857a31b04f7ddbc2b9d.exe

  • Size

    453KB

  • MD5

    ba6dccfafbb7e0be71a5de633c7c54e9

  • SHA1

    7328162ced93a894b65411d02c126698a70cf28d

  • SHA256

    405cb81ef326299cf3eee91f8b83c4e1fda30ce5da409857a31b04f7ddbc2b9d

  • SHA512

    50a8e9bc3ecf707d6ebc55c4383c7c94c7c3ad56e7fca3bcd0833d7aec9ade5869ddbcb2e436843494eb840076056cf7c781dbb5f7ba8dee1724743ae8ed7df3

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\405cb81ef326299cf3eee91f8b83c4e1fda30ce5da409857a31b04f7ddbc2b9d.exe
    "C:\Users\Admin\AppData\Local\Temp\405cb81ef326299cf3eee91f8b83c4e1fda30ce5da409857a31b04f7ddbc2b9d.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4624
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 612
      2⤵
      • Program crash
      PID:4416
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 648
      2⤵
      • Program crash
      PID:960
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 736
      2⤵
      • Program crash
      PID:4964
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 736
      2⤵
      • Program crash
      PID:4628
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 840
      2⤵
      • Program crash
      PID:540
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 1184
      2⤵
      • Program crash
      PID:2196
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 1244
      2⤵
      • Program crash
      PID:5076
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "405cb81ef326299cf3eee91f8b83c4e1fda30ce5da409857a31b04f7ddbc2b9d.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\405cb81ef326299cf3eee91f8b83c4e1fda30ce5da409857a31b04f7ddbc2b9d.exe" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2484
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im "405cb81ef326299cf3eee91f8b83c4e1fda30ce5da409857a31b04f7ddbc2b9d.exe" /f
        3⤵
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:508
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4624 -s 1076
      2⤵
      • Program crash
      PID:3140
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4624 -ip 4624
    1⤵
      PID:1924
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 4624 -ip 4624
      1⤵
        PID:1500
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4624 -ip 4624
        1⤵
          PID:2660
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4624 -ip 4624
          1⤵
            PID:2456
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4624 -ip 4624
            1⤵
              PID:764
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4624 -ip 4624
              1⤵
                PID:1288
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 4624 -ip 4624
                1⤵
                  PID:2388
                • C:\Windows\SysWOW64\WerFault.exe
                  C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 4624 -ip 4624
                  1⤵
                    PID:4228

                  Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  • memory/508-134-0x0000000000000000-mapping.dmp

                  • memory/2484-133-0x0000000000000000-mapping.dmp

                  • memory/4624-130-0x0000000000E0D000-0x0000000000E35000-memory.dmp

                    Filesize

                    160KB

                  • memory/4624-131-0x00000000011F0000-0x0000000001236000-memory.dmp

                    Filesize

                    280KB

                  • memory/4624-132-0x0000000000400000-0x0000000000C4D000-memory.dmp

                    Filesize

                    8.3MB