Overview

overview

10

Static

static

3

337f603c8b...18.exe

windows7-x64

10

337f603c8b...18.exe

windows10-2004-x64

10

$PLUGINSDI...nu.dll

windows7-x64

3

$PLUGINSDI...nu.dll

windows10-2004-x64

3

$TEMP/setup.exe

windows7-x64

10

$TEMP/setup.exe

windows10-2004-x64

10

$TEMP/sys.exe

windows7-x64

7

$TEMP/sys.exe

windows10-2004-x64

7

$PLUGINSDIR/Math.dll

windows7-x64

3

$PLUGINSDIR/Math.dll

windows10-2004-x64

3

$PLUGINSDI...es.dll

windows7-x64

3

$PLUGINSDI...es.dll

windows10-2004-x64

3

$PLUGINSDI...em.dll

windows7-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

$PLUGINSDIR/UAC.dll

windows7-x64

3

$PLUGINSDIR/UAC.dll

windows10-2004-x64

3

$R1.dll

windows7-x64

6

$R1.dll

windows10-2004-x64

6

$TEMP/tcpsrvc.exe

windows7-x64

7

$TEMP/tcpsrvc.exe

windows10-2004-x64

7

$PLUGINSDI...em.dll

windows7-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

$SYSDIR/$S...1_.exe

windows7-x64

7

$SYSDIR/$S...1_.exe

windows10-2004-x64

7

$PLUGINSDI...ns.dll

windows7-x64

3

$PLUGINSDI...ns.dll

windows10-2004-x64

3

$PLUGINSDI...em.dll

windows7-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

$SYSDIR/$_5_.dll

windows7-x64

6

$SYSDIR/$_5_.dll

windows10-2004-x64

6

Analysis

  • max time kernel
    132s
  • max time network
    134s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-10-2024 05:43

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General

  • Target

    $TEMP/tcpsrvc.exe

  • Size

    372KB

  • MD5

    8c706a763e7622b72fe3222ec053d326

  • SHA1

    2ee23255a22f1d42eefbc1fe88f4d82736e6c1b7

  • SHA256

    79b06d3d76b61edfc0d3f48d0189e37ab2245ab169a06cf0aeb815576cdc7819

  • SHA512

    21c36d1c470d71374e4da34cb9b589cb0f6105145509bb4d30187be4e219f34e0f96ed0cd6d1a25cc3e366474e918d5b99a9f5e2c25d610b8f1cf7dc4ba5cbc8

  • SSDEEP

    6144:UzfXbLb6FgXVLFRHCt9sZ+2yrq4jKChDCD3C4wOmwIAhd2GBEfQhItk+/D0kNVTC:eHeFq/HCA4h1FWCFDA/2GcOYN5WZYgKc

Score
7/10
adwarediscoverypersistencestealer

Malware Config

Signatures

  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Checks installed software on the system 1 TTPs

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

    discovery
  • Installs/modifies Browser Helper Object 2 TTPs 4 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

    stealeradware
  • Maps connected drives based on registry 3 TTPs 6 IoCs

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

  • Drops file in System32 directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Modifies Internet Explorer Protected Mode 1 TTPs 1 IoCs
  • Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 36 IoCs
    adwarespyware
  • Modifies registry class 10 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\$TEMP\tcpsrvc.exe
    "C:\Users\Admin\AppData\Local\Temp\$TEMP\tcpsrvc.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Installs/modifies Browser Helper Object
    • Maps connected drives based on registry
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies Internet Explorer Protected Mode
    • Modifies Internet Explorer Protected Mode Banner
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2036
    • C:\Windows\SysWOW64\regsvr32.exe
      "C:\Windows\system32\regsvr32.exe" /s "C:\Windows\system32\bqhymwvhyl.dll"
      2⤵
      • Loads dropped DLL
      • Adds Run key to start application
      • Installs/modifies Browser Helper Object
      • Maps connected drives based on registry
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      PID:2088
  • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
    "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} -Embedding
    1⤵
    • System Location Discovery: System Language Discovery
    PID:5032
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    1⤵
    • Modifies Internet Explorer settings
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4448
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:4448 CREDAT:17410 /prefetch:2
      2⤵
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Suspicious use of SetWindowsHookEx
      PID:2668

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\IE\84KCLP1T\suggestions[1].en-US
    Filesize

    17KB

    MD5

    5a34cb996293fde2cb7a4ac89587393a

    SHA1

    3c96c993500690d1a77873cd62bc639b3a10653f

    SHA256

    c6a5377cbc07eece33790cfc70572e12c7a48ad8296be25c0cc805a1f384dbad

    SHA512

    e1b7d0107733f81937415104e70f68b1be6fd0ca65dccf4ff72637943d44278d3a77f704aedff59d2dbc0d56a609b2590c8ec0dd6bc48ab30f1dad0c07a0a3ee

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\nscBFF7.tmp.dll
    Filesize

    604KB

    MD5

    b8b303dbcda489ce392dd78b9c3088ae

    SHA1

    5fbb5dc212a26c8d995d9fc70aaed84972c81378

    SHA256

    6fc9b661c0be1f1c29943c41125ed6e883576f2714bc9c4738a1098850f5bbde

    SHA512

    551745e3bdf647fcf0c8e0b9d92cb691c0d011382c9867c0d575221cec5c669277d79467d751b37269c5e61d31a9485d9a21c5015db0663b4c9a3639ced96b03

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\nspB77B.tmp\System.dll
    Filesize

    11KB

    MD5

    c17103ae9072a06da581dec998343fc1

    SHA1

    b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

    SHA256

    dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

    SHA512

    d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

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  • memory/2036-25-0x0000000028DE0000-0x0000000028E7E000-memory.dmp

    Filesize

    632KB

    Download