Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-06-2023 01:14

General

  • Target

    2f476997ecdb5116621e72532460d7149299a6b058bee5b58501484da80d523b.exe

  • Size

    1.6MB

  • MD5

    2baa6f19fa7f4ef5941e92335aa2c06d

  • SHA1

    68c4872eba868d9e8b640e0e76cb1a4a00331d8e

  • SHA256

    2f476997ecdb5116621e72532460d7149299a6b058bee5b58501484da80d523b

  • SHA512

    ee875b4c223bba5864aa1d5ca165d798625442a8ef0a35ec16dc4283ad404d7656bfeeb262ef2ebdc8d3fe954416c019a210c59e2caba6507ae89f13d12d2d27

  • SSDEEP

    24576:e2G/nvxW3WXeGxRoXGkxVsAjtxWCu2RdBaYwqf36eYmMyXxRlRYSZF083SFN:ebA3V6aXGkzFaPmUzyXnlqSZE

Score
10/10

Malware Config

Signatures

  • DcRat

    DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

  • Process spawned unexpected child process 33 IoCs

    This typically indicates the parent process was compromised via an exploit or macro.

  • DCRat payload 6 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in Program Files directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 33 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\2f476997ecdb5116621e72532460d7149299a6b058bee5b58501484da80d523b.exe
    "C:\Users\Admin\AppData\Local\Temp\2f476997ecdb5116621e72532460d7149299a6b058bee5b58501484da80d523b.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4320
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\providercomponentbrowsersessionnet\RMsUvdXKMQWO2B.vbe"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:3280
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\providercomponentbrowsersessionnet\VeZgJ.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3544
        • C:\providercomponentbrowsersessionnet\providerDriver.exe
          "C:\providercomponentbrowsersessionnet\providerDriver.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:824
          • C:\odt\spoolsv.exe
            "C:\odt\spoolsv.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: GetForegroundWindowSpam
            • Suspicious use of AdjustPrivilegeToken
            PID:4864
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Multimedia Platform\dllhost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1788
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhost" /sc ONLOGON /tr "'C:\Program Files\Windows Multimedia Platform\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3376
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "dllhostd" /sc MINUTE /mo 12 /tr "'C:\Program Files\Windows Multimedia Platform\dllhost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2676
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 7 /tr "'C:\Users\Admin\Searches\taskhostw.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4008
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostw" /sc ONLOGON /tr "'C:\Users\Admin\Searches\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:848
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "taskhostwt" /sc MINUTE /mo 11 /tr "'C:\Users\Admin\Searches\taskhostw.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:244
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Defender\fr-FR\backgroundTaskHost.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:100
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHost" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Defender\fr-FR\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3952
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "backgroundTaskHostb" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Windows Defender\fr-FR\backgroundTaskHost.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1240
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 5 /tr "'C:\Users\All Users\cmd.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4676
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\Users\All Users\cmd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1576
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 9 /tr "'C:\Users\All Users\cmd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:628
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 8 /tr "'C:\providercomponentbrowsersessionnet\cmd.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3348
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmd" /sc ONLOGON /tr "'C:\providercomponentbrowsersessionnet\cmd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1000
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "cmdc" /sc MINUTE /mo 10 /tr "'C:\providercomponentbrowsersessionnet\cmd.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3912
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 14 /tr "'C:\Recovery\WindowsRE\OfficeClickToRun.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1988
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "OfficeClickToRun" /sc ONLOGON /tr "'C:\Recovery\WindowsRE\OfficeClickToRun.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3512
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "OfficeClickToRunO" /sc MINUTE /mo 12 /tr "'C:\Recovery\WindowsRE\OfficeClickToRun.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3916
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 8 /tr "'C:\Users\Default\SppExtComObj.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1372
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObj" /sc ONLOGON /tr "'C:\Users\Default\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3876
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SppExtComObjS" /sc MINUTE /mo 8 /tr "'C:\Users\Default\SppExtComObj.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:5104
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 13 /tr "'C:\Program Files\Uninstall Information\wininit.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2264
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininit" /sc ONLOGON /tr "'C:\Program Files\Uninstall Information\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:768
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "wininitw" /sc MINUTE /mo 12 /tr "'C:\Program Files\Uninstall Information\wininit.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4344
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\odt\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4340
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\odt\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4524
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 10 /tr "'C:\odt\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1548
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 5 /tr "'C:\providercomponentbrowsersessionnet\sysmon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3216
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\providercomponentbrowsersessionnet\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4212
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 8 /tr "'C:\providercomponentbrowsersessionnet\sysmon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:3548
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 11 /tr "'C:\odt\spoolsv.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4924
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsv" /sc ONLOGON /tr "'C:\odt\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:4664
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "spoolsvs" /sc MINUTE /mo 10 /tr "'C:\odt\spoolsv.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2608

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\Searches\taskhostw.exe
    Filesize

    1.3MB

    MD5

    859a819f981ca77301ff688f574fdcb1

    SHA1

    a071e3d67c5e92caf3d417005bd5311e9012fae7

    SHA256

    406c06dd07479d167bd2cc4d482811c4497b5b766eb185b6d7987af1048fee0a

    SHA512

    29dfd1101a3798efea8d2d5ebf16b089e3cbe19f81c830dbf924b3e61b63062f1eed183c40bee8fea5d63d8ee6b634215c568129999182b341bfbd3e73437179

  • C:\odt\spoolsv.exe
    Filesize

    1.3MB

    MD5

    859a819f981ca77301ff688f574fdcb1

    SHA1

    a071e3d67c5e92caf3d417005bd5311e9012fae7

    SHA256

    406c06dd07479d167bd2cc4d482811c4497b5b766eb185b6d7987af1048fee0a

    SHA512

    29dfd1101a3798efea8d2d5ebf16b089e3cbe19f81c830dbf924b3e61b63062f1eed183c40bee8fea5d63d8ee6b634215c568129999182b341bfbd3e73437179

  • C:\odt\spoolsv.exe
    Filesize

    1.3MB

    MD5

    859a819f981ca77301ff688f574fdcb1

    SHA1

    a071e3d67c5e92caf3d417005bd5311e9012fae7

    SHA256

    406c06dd07479d167bd2cc4d482811c4497b5b766eb185b6d7987af1048fee0a

    SHA512

    29dfd1101a3798efea8d2d5ebf16b089e3cbe19f81c830dbf924b3e61b63062f1eed183c40bee8fea5d63d8ee6b634215c568129999182b341bfbd3e73437179

  • C:\providercomponentbrowsersessionnet\RMsUvdXKMQWO2B.vbe
    Filesize

    216B

    MD5

    5def842da05330520251c8387fad9324

    SHA1

    280555ffb06b6140968c4e283ccf626600bd76d5

    SHA256

    8c848ba2be36eac17d91fde15420454ba880b08fabc0d5f6a8b5a1a7490d9bcb

    SHA512

    aca06163bf5d80c5a7f7d1be66da2553dc438303143e3813b334dbe528278893e20722d30668b4be639a9a799acb546c2cd481d086b963357b903f65b6eb83ca

  • C:\providercomponentbrowsersessionnet\VeZgJ.bat
    Filesize

    58B

    MD5

    936487934c40b7b6efbede5d4665bfe5

    SHA1

    f5119e4128c38bf607c07a100f670be4b033c4ea

    SHA256

    7734b8c67c13c61d236a9f437875a85ae13450720be7e4ce398a4e197136395d

    SHA512

    1bda0aaab8f4988924525c264e6e05a2b16aae2834cd3863474dd31f2581ddb16458bb6fea1cc8edfaec97901af2926be7e28f28f46dc96d039d59176761d2d3

  • C:\providercomponentbrowsersessionnet\providerDriver.exe
    Filesize

    1.3MB

    MD5

    859a819f981ca77301ff688f574fdcb1

    SHA1

    a071e3d67c5e92caf3d417005bd5311e9012fae7

    SHA256

    406c06dd07479d167bd2cc4d482811c4497b5b766eb185b6d7987af1048fee0a

    SHA512

    29dfd1101a3798efea8d2d5ebf16b089e3cbe19f81c830dbf924b3e61b63062f1eed183c40bee8fea5d63d8ee6b634215c568129999182b341bfbd3e73437179

  • C:\providercomponentbrowsersessionnet\providerDriver.exe
    Filesize

    1.3MB

    MD5

    859a819f981ca77301ff688f574fdcb1

    SHA1

    a071e3d67c5e92caf3d417005bd5311e9012fae7

    SHA256

    406c06dd07479d167bd2cc4d482811c4497b5b766eb185b6d7987af1048fee0a

    SHA512

    29dfd1101a3798efea8d2d5ebf16b089e3cbe19f81c830dbf924b3e61b63062f1eed183c40bee8fea5d63d8ee6b634215c568129999182b341bfbd3e73437179

  • memory/824-147-0x000000001AEB0000-0x000000001AEC0000-memory.dmp
    Filesize

    64KB

  • memory/824-148-0x000000001BB10000-0x000000001C038000-memory.dmp
    Filesize

    5.2MB

  • memory/824-146-0x000000001B410000-0x000000001B460000-memory.dmp
    Filesize

    320KB

  • memory/824-145-0x0000000000130000-0x000000000028E000-memory.dmp
    Filesize

    1.4MB

  • memory/4864-182-0x0000000001830000-0x0000000001840000-memory.dmp
    Filesize

    64KB

  • memory/4864-183-0x000000001D6C0000-0x000000001D882000-memory.dmp
    Filesize

    1.8MB