Analysis

  • max time kernel
    127s
  • max time network
    129s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-12-2022 02:01

General

  • Target

    9239826853_awb_20221221_514_20221221.exe

  • Size

    576KB

  • MD5

    a27337fabd21bf9cd0eb1b339109c62c

  • SHA1

    8a4c92e398aacafe78987caefe5bc55f984a41ec

  • SHA256

    00b8e2f4f20cea62efb3ffaf667f36ca4afaeffd3f7ccc5762d753422503be1e

  • SHA512

    09bda15ceb928d57295407187290dbc21f26d08a64a8ab4fe564cabf306b928d42fe50bb554e9efdb59d833cec96a4fe513c588fca7737a274eb9a3b1fa5d0d1

  • SSDEEP

    12288:fglVoI8ntiqXOsZtMgBzsSJ/zaGvkRUPFSUEWqf4sLrK9:6qJMGHlza4FS/X2

Malware Config

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main payload 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9239826853_awb_20221221_514_20221221.exe
    "C:\Users\Admin\AppData\Local\Temp\9239826853_awb_20221221_514_20221221.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4888
    • C:\Users\Admin\AppData\Local\Temp\cxfogupuk.exe
      "C:\Users\Admin\AppData\Local\Temp\cxfogupuk.exe" C:\Users\Admin\AppData\Local\Temp\bamlymvxaz.po
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:3356
      • C:\Users\Admin\AppData\Local\Temp\cxfogupuk.exe
        "C:\Users\Admin\AppData\Local\Temp\cxfogupuk.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:4072
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c start /b powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\cxfogupuk.exe' & exit
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3380
          • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
            powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\cxfogupuk.exe'
            5⤵
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:2116

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\bamlymvxaz.po

    Filesize

    5KB

    MD5

    cfc7faa259afbcdd25b25faf32a6ff72

    SHA1

    2ed51569eb86f35e7ef01c6167c30f0327f90e64

    SHA256

    67bbf3441bf6dd136ebfbfb9d4436dc401058b5f573145a9ea4dcaca68b77ef8

    SHA512

    c457fbd2b624755277185b11c2824018bb9aabdaeca1cfc0420ec74e8f119a9dc73c31363340fcad2cee906d6b66bc71c203696a23f6f70d399fa96eb1a38c4d

  • C:\Users\Admin\AppData\Local\Temp\cxfogupuk.exe

    Filesize

    104KB

    MD5

    cb8090344fbb5f454e495b8c0018f126

    SHA1

    37b532bbf05c43522c5ae0669440429ffa538c02

    SHA256

    51c8ee761dffd021a6d87a89ebc7cbca5d868ce227c992ce82102fd1c0345328

    SHA512

    02fad87643ceb02bae2abd3d58073ad390cfaaaea9ed6c32b0e9723851da0b5021e09339edee54c5c7ecbaf334673bfebbe8452bb0cf30764c75824e456d719b

  • C:\Users\Admin\AppData\Local\Temp\cxfogupuk.exe

    Filesize

    104KB

    MD5

    cb8090344fbb5f454e495b8c0018f126

    SHA1

    37b532bbf05c43522c5ae0669440429ffa538c02

    SHA256

    51c8ee761dffd021a6d87a89ebc7cbca5d868ce227c992ce82102fd1c0345328

    SHA512

    02fad87643ceb02bae2abd3d58073ad390cfaaaea9ed6c32b0e9723851da0b5021e09339edee54c5c7ecbaf334673bfebbe8452bb0cf30764c75824e456d719b

  • C:\Users\Admin\AppData\Local\Temp\cxfogupuk.exe

    Filesize

    104KB

    MD5

    cb8090344fbb5f454e495b8c0018f126

    SHA1

    37b532bbf05c43522c5ae0669440429ffa538c02

    SHA256

    51c8ee761dffd021a6d87a89ebc7cbca5d868ce227c992ce82102fd1c0345328

    SHA512

    02fad87643ceb02bae2abd3d58073ad390cfaaaea9ed6c32b0e9723851da0b5021e09339edee54c5c7ecbaf334673bfebbe8452bb0cf30764c75824e456d719b

  • C:\Users\Admin\AppData\Local\Temp\faajk.m

    Filesize

    577KB

    MD5

    3f3e36ecf1d2a40322cdc6e03a91abec

    SHA1

    e2a2049f42e12bf8294f51932b7ab66d3fe758fd

    SHA256

    1b16301b40062741d9252f07d7a3c6633fec23a5d57eff6527aeafcdd56d37e1

    SHA512

    cd7ccc51dca3bb8afde51e3a457c54b98a23ba9483a37d880a7fac625a4f537c3e51230d0e61e87effa298cb2ed30a203ab3c604628972fca92776680468027b

  • memory/2116-153-0x0000000006FA0000-0x0000000007036000-memory.dmp

    Filesize

    600KB

  • memory/2116-154-0x0000000006510000-0x0000000006532000-memory.dmp

    Filesize

    136KB

  • memory/2116-149-0x00000000057F0000-0x0000000005856000-memory.dmp

    Filesize

    408KB

  • memory/2116-152-0x0000000006430000-0x000000000644A000-memory.dmp

    Filesize

    104KB

  • memory/2116-151-0x0000000007580000-0x0000000007BFA000-memory.dmp

    Filesize

    6.5MB

  • memory/2116-150-0x0000000005F40000-0x0000000005F5E000-memory.dmp

    Filesize

    120KB

  • memory/2116-145-0x0000000000000000-mapping.dmp

  • memory/2116-146-0x00000000025D0000-0x0000000002606000-memory.dmp

    Filesize

    216KB

  • memory/2116-147-0x0000000004FE0000-0x0000000005608000-memory.dmp

    Filesize

    6.2MB

  • memory/2116-148-0x0000000004EF0000-0x0000000004F12000-memory.dmp

    Filesize

    136KB

  • memory/3356-132-0x0000000000000000-mapping.dmp

  • memory/3380-143-0x0000000000000000-mapping.dmp

  • memory/4072-137-0x0000000000000000-mapping.dmp

  • memory/4072-144-0x0000000000400000-0x0000000000494000-memory.dmp

    Filesize

    592KB

  • memory/4072-142-0x0000000005CC0000-0x0000000005D26000-memory.dmp

    Filesize

    408KB

  • memory/4072-141-0x0000000006270000-0x0000000006814000-memory.dmp

    Filesize

    5.6MB

  • memory/4072-140-0x0000000005C20000-0x0000000005CB2000-memory.dmp

    Filesize

    584KB

  • memory/4072-139-0x0000000000400000-0x0000000000494000-memory.dmp

    Filesize

    592KB