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Analysis

  • max time kernel
    167s
  • max time network
    175s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231023-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
  • submitted
    01/11/2023, 01:47

General

  • Target

    bf4fa4deac71c6c50cc93e2088424079ec5bec1188710beedde515f9b741f3bf.exe

  • Size

    575KB

  • MD5

    856dc1ff81894c021e052abf46190e57

  • SHA1

    9c526901e1c6e50b069fbaa463a746512dc7548a

  • SHA256

    bf4fa4deac71c6c50cc93e2088424079ec5bec1188710beedde515f9b741f3bf

  • SHA512

    830bd4afc9b29fb0d5a385377bfc243a69f11619e07ebfc8c890dbefda606809cde2934efff8ede365b0bc10b8c8422de85b60c9b9da3dd81a4e08c1d028ca11

  • SSDEEP

    12288:MS4vdwKTNWuuRYqrggHp/bLf7daLBIlXSY4j+6qj9:aF7M0UJf7gtIlqjyj9

Malware Config

Signatures

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 5 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bf4fa4deac71c6c50cc93e2088424079ec5bec1188710beedde515f9b741f3bf.exe
    "C:\Users\Admin\AppData\Local\Temp\bf4fa4deac71c6c50cc93e2088424079ec5bec1188710beedde515f9b741f3bf.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3932
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3932 -s 1260
      2⤵
      • Program crash
      PID:1028
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3932 -s 2096
      2⤵
      • Program crash
      PID:3000
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3932 -s 2124
      2⤵
      • Program crash
      PID:4472
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\bf4fa4deac71c6c50cc93e2088424079ec5bec1188710beedde515f9b741f3bf.exe" & del "C:\ProgramData\*.dll"" & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1848
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 5
        3⤵
        • Delays execution with timeout.exe
        PID:212
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3932 -s 140
      2⤵
      • Program crash
      PID:404
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3932 -s 152
      2⤵
      • Program crash
      PID:2028
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3932 -ip 3932
    1⤵
      PID:412
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3932 -ip 3932
      1⤵
        PID:4420
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3932 -ip 3932
        1⤵
          PID:3172
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 516 -p 3932 -ip 3932
          1⤵
            PID:3040
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3932 -ip 3932
            1⤵
              PID:4640
            • C:\Windows\system32\rundll32.exe
              "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
              1⤵
                PID:2080
              • C:\Windows\System32\svchost.exe
                C:\Windows\System32\svchost.exe -k UnistackSvcGroup
                1⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:4008

              Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              • C:\ProgramData\mozglue.dll

                Filesize

                593KB

                MD5

                c8fd9be83bc728cc04beffafc2907fe9

                SHA1

                95ab9f701e0024cedfbd312bcfe4e726744c4f2e

                SHA256

                ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

                SHA512

                fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

              • C:\ProgramData\mozglue.dll

                Filesize

                593KB

                MD5

                c8fd9be83bc728cc04beffafc2907fe9

                SHA1

                95ab9f701e0024cedfbd312bcfe4e726744c4f2e

                SHA256

                ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

                SHA512

                fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

              • C:\ProgramData\nss3.dll

                Filesize

                2.0MB

                MD5

                1cc453cdf74f31e4d913ff9c10acdde2

                SHA1

                6e85eae544d6e965f15fa5c39700fa7202f3aafe

                SHA256

                ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

                SHA512

                dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

              • memory/3932-5-0x0000000010000000-0x0000000010095000-memory.dmp

                Filesize

                596KB

              • memory/3932-76-0x0000000010000000-0x0000000010095000-memory.dmp

                Filesize

                596KB

              • memory/3932-0-0x0000000002190000-0x0000000002191000-memory.dmp

                Filesize

                4KB

              • memory/3932-6-0x0000000010000000-0x000000001022D000-memory.dmp

                Filesize

                2.2MB

              • memory/3932-7-0x0000000061E00000-0x0000000061EF3000-memory.dmp

                Filesize

                972KB

              • memory/3932-45-0x0000000010000000-0x0000000010095000-memory.dmp

                Filesize

                596KB

              • memory/3932-3-0x0000000010000000-0x000000001022D000-memory.dmp

                Filesize

                2.2MB

              • memory/3932-2-0x0000000002210000-0x000000000222C000-memory.dmp

                Filesize

                112KB

              • memory/3932-1-0x0000000010000000-0x0000000010095000-memory.dmp

                Filesize

                596KB

              • memory/3932-4-0x0000000002190000-0x0000000002191000-memory.dmp

                Filesize

                4KB

              • memory/3932-77-0x0000000010000000-0x000000001022D000-memory.dmp

                Filesize

                2.2MB

              • memory/4008-79-0x0000015E58A80000-0x0000015E58A90000-memory.dmp

                Filesize

                64KB

              • memory/4008-95-0x0000015E58B80000-0x0000015E58B90000-memory.dmp

                Filesize

                64KB

              • memory/4008-111-0x0000015E60EF0000-0x0000015E60EF1000-memory.dmp

                Filesize

                4KB

              • memory/4008-113-0x0000015E60F40000-0x0000015E60F41000-memory.dmp

                Filesize

                4KB

              • memory/4008-114-0x0000015E60F20000-0x0000015E60F21000-memory.dmp

                Filesize

                4KB

              • memory/4008-115-0x0000015E61030000-0x0000015E61031000-memory.dmp

                Filesize

                4KB