Analysis

  • max time kernel
    162s
  • max time network
    161s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/12/2023, 05:22

General

  • Target

    70fafc1ef4d7b204de278f8c41055edd.exe

  • Size

    3.2MB

  • MD5

    70fafc1ef4d7b204de278f8c41055edd

  • SHA1

    c66a1d79a4d8c492667182a4d90f1b79922be9f3

  • SHA256

    c1c7fb6bd3b0af18477b76a9cad889995ee324cb91acf5b59d8e2c63195bc390

  • SHA512

    0f5211c111ab3a763238693e7a93599c5356e90cbfbc9b0c0437cda2d329ebe6baca5419a48a9bb026cfac8e5f24163d466bbea36eba4c953dbf44cfb5116afc

  • SSDEEP

    98304:rSg5+1FSPzyFGqvcakcj2xoAX/cakc3oQ/PQ/hxMrfcakcj2xoAX/cakcO:V+PzFGqvdlj25/dlq/hxyfdlj25/dlO

Score
7/10
upx

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Program crash 4 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Modifies system certificate store 2 TTPs 5 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of UnmapMainImage 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\70fafc1ef4d7b204de278f8c41055edd.exe
    "C:\Users\Admin\AppData\Local\Temp\70fafc1ef4d7b204de278f8c41055edd.exe"
    1⤵
    • Suspicious behavior: RenamesItself
    • Suspicious use of UnmapMainImage
    • Suspicious use of WriteProcessMemory
    PID:1484
    • C:\Users\Admin\AppData\Local\Temp\70fafc1ef4d7b204de278f8c41055edd.exe
      C:\Users\Admin\AppData\Local\Temp\70fafc1ef4d7b204de278f8c41055edd.exe
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Modifies system certificate store
      • Suspicious use of UnmapMainImage
      • Suspicious use of WriteProcessMemory
      PID:4152
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks.exe /CREATE /RL HIGHEST /SC ONLOGON /TR "C:\Users\Admin\AppData\Local\Temp\70fafc1ef4d7b204de278f8c41055edd.exe" /TN Wxpz1JCma418 /F
        3⤵
        • Creates scheduled task(s)
        PID:2888
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c schtasks.exe /Query /XML /TN Wxpz1JCma418 > C:\Users\Admin\AppData\Local\Temp\Z2vGMqls.xml
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4884
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks.exe /Query /XML /TN Wxpz1JCma418
          4⤵
            PID:2128
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 620
          3⤵
          • Program crash
          PID:2072
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 608
          3⤵
          • Program crash
          PID:3776
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 640
          3⤵
          • Program crash
          PID:1940
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 732
          3⤵
          • Program crash
          PID:2388
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 364 -p 4152 -ip 4152
      1⤵
        PID:5096
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4152 -ip 4152
        1⤵
          PID:852
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4152 -ip 4152
          1⤵
            PID:1476
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4152 -ip 4152
            1⤵
              PID:2112

            Network

                  MITRE ATT&CK Enterprise v15

                  Replay Monitor

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                  Downloads

                  • C:\Users\Admin\AppData\Local\Temp\70fafc1ef4d7b204de278f8c41055edd.exe

                    Filesize

                    1.9MB

                    MD5

                    bd8063b5cafe700f35b514766c7c68c9

                    SHA1

                    22413815970dd5fee9b762683b86ca6ccb8af37e

                    SHA256

                    28aa621ed73c8fadb433c12ad0bcfe5cbf45049ed1e6c1f35850d1aebe598f12

                    SHA512

                    a7c06dcbf1bcada503d74c773fd10a10e32565eb1c93fb41dd65cb3fd3e0f01090920e6229ea3f510f304e7677421874579940bb88676e15f85a564fccafa9ce

                  • C:\Users\Admin\AppData\Local\Temp\Z2vGMqls.xml

                    Filesize

                    1KB

                    MD5

                    781a5901dc02bad9ad79a4300a89c91b

                    SHA1

                    68c9939a909c6cecef9ff2e4b3b943f421db1b7c

                    SHA256

                    05f2cfed8a0cfa664308ca1994e70586bbe19dfaddc4756c76ebf49405436d25

                    SHA512

                    77c78f037c62037ccd65bb2569a479d275a8ae3996b07c8b25a174a9f57cb9944960e3bb797be34a53ea20438b83f2c90e6c8c924627a7943e28bd2f91997965

                  • memory/1484-0-0x0000000000400000-0x000000000065C000-memory.dmp

                    Filesize

                    2.4MB

                  • memory/1484-1-0x0000000000400000-0x000000000046B000-memory.dmp

                    Filesize

                    428KB

                  • memory/1484-4-0x0000000001720000-0x000000000179E000-memory.dmp

                    Filesize

                    504KB

                  • memory/1484-14-0x0000000000400000-0x000000000046B000-memory.dmp

                    Filesize

                    428KB

                  • memory/4152-13-0x0000000000400000-0x000000000065C000-memory.dmp

                    Filesize

                    2.4MB

                  • memory/4152-15-0x0000000001730000-0x00000000017AE000-memory.dmp

                    Filesize

                    504KB

                  • memory/4152-22-0x0000000000470000-0x00000000004DB000-memory.dmp

                    Filesize

                    428KB

                  • memory/4152-23-0x0000000000400000-0x000000000045B000-memory.dmp

                    Filesize

                    364KB

                  • memory/4152-41-0x0000000000400000-0x000000000065C000-memory.dmp

                    Filesize

                    2.4MB