Analysis

  • max time kernel
    100s
  • max time network
    104s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    24-03-2023 05:31

General

  • Target

    168DD964CEDAB347B56461282AB409B5FB19DE28F50F6.exe

  • Size

    1.1MB

  • MD5

    7b2cc7bd31191fc112de760c996e56a1

  • SHA1

    8c87bbdd79eda5b6f6612a9d828d10924071e959

  • SHA256

    168dd964cedab347b56461282ab409b5fb19de28f50f635d7071dfce39c04ed5

  • SHA512

    9c7b924020c2c7c8d485100429449f4d0221e73ddf4f00ea197efa539a29d9cd74528928371a9640c05f8cf27f2b37348bec7b3d3a9c1006bcc304ebc85fbd7a

  • SSDEEP

    24576:JpyruWBdka5dL1NELih7LqxLBwceZEY2Onj3JniDq0A5BfJXA6:Jpm9nkIdL1WCnwmDZJ2Q3ZB5BfJXA6

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 24 IoCs

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

  • DCRat payload 8 IoCs

    Detects payload of DCRat, commonly dropped by NSIS installers.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Drops file in Program Files directory 12 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 24 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 7 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\168DD964CEDAB347B56461282AB409B5FB19DE28F50F6.exe
    "C:\Users\Admin\AppData\Local\Temp\168DD964CEDAB347B56461282AB409B5FB19DE28F50F6.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1048
    • C:\MSOCache\All Users\sppsvc.exe
      "C:\MSOCache\All Users\sppsvc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:648
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\sppsvc.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:360
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\MSOCache\All Users\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1668
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\sppsvc.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1372
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Windows\SoftwareDistribution\Download\d881ecfb1357f383d18f1e4fd0554eb0\cbshandler\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:316
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Windows\SoftwareDistribution\Download\d881ecfb1357f383d18f1e4fd0554eb0\cbshandler\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1524
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Windows\SoftwareDistribution\Download\d881ecfb1357f383d18f1e4fd0554eb0\cbshandler\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:660
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 11 /tr "'C:\Program Files\Windows NT\TableTextService\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1968
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Program Files\Windows NT\TableTextService\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1044
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Program Files\Windows NT\TableTextService\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1704
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Common Files\Services\lsass.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:808
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\Common Files\Services\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1104
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Common Files\Services\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1300
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Colors\Idle.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:768
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "Idle" /sc ONLOGON /tr "'C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Colors\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1768
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "IdleI" /sc MINUTE /mo 14 /tr "'C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Colors\Idle.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1232
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\Program Files\Windows Sidebar\Shared Gadgets\smss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:932
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Program Files\Windows Sidebar\Shared Gadgets\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1608
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 10 /tr "'C:\Program Files\Windows Sidebar\Shared Gadgets\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1600
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Internet Explorer\explorer.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1572
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorer" /sc ONLOGON /tr "'C:\Program Files (x86)\Internet Explorer\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2016
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "explorere" /sc MINUTE /mo 11 /tr "'C:\Program Files (x86)\Internet Explorer\explorer.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1128
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAPW" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Windows Media Player\Media Renderer\WMIADAP.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2020
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAP" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Media Player\Media Renderer\WMIADAP.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1152
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "WMIADAPW" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Windows Media Player\Media Renderer\WMIADAP.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1196

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

System Information Discovery

1
T1082

Query Registry

1
T1012

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\MSOCache\All Users\sppsvc.exe
    Filesize

    1.1MB

    MD5

    7b2cc7bd31191fc112de760c996e56a1

    SHA1

    8c87bbdd79eda5b6f6612a9d828d10924071e959

    SHA256

    168dd964cedab347b56461282ab409b5fb19de28f50f635d7071dfce39c04ed5

    SHA512

    9c7b924020c2c7c8d485100429449f4d0221e73ddf4f00ea197efa539a29d9cd74528928371a9640c05f8cf27f2b37348bec7b3d3a9c1006bcc304ebc85fbd7a

  • C:\MSOCache\All Users\sppsvc.exe
    Filesize

    1.1MB

    MD5

    7b2cc7bd31191fc112de760c996e56a1

    SHA1

    8c87bbdd79eda5b6f6612a9d828d10924071e959

    SHA256

    168dd964cedab347b56461282ab409b5fb19de28f50f635d7071dfce39c04ed5

    SHA512

    9c7b924020c2c7c8d485100429449f4d0221e73ddf4f00ea197efa539a29d9cd74528928371a9640c05f8cf27f2b37348bec7b3d3a9c1006bcc304ebc85fbd7a

  • C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Colors\Idle.exe
    Filesize

    1.1MB

    MD5

    7b2cc7bd31191fc112de760c996e56a1

    SHA1

    8c87bbdd79eda5b6f6612a9d828d10924071e959

    SHA256

    168dd964cedab347b56461282ab409b5fb19de28f50f635d7071dfce39c04ed5

    SHA512

    9c7b924020c2c7c8d485100429449f4d0221e73ddf4f00ea197efa539a29d9cd74528928371a9640c05f8cf27f2b37348bec7b3d3a9c1006bcc304ebc85fbd7a

  • \MSOCache\All Users\sppsvc.exe
    Filesize

    1.1MB

    MD5

    7b2cc7bd31191fc112de760c996e56a1

    SHA1

    8c87bbdd79eda5b6f6612a9d828d10924071e959

    SHA256

    168dd964cedab347b56461282ab409b5fb19de28f50f635d7071dfce39c04ed5

    SHA512

    9c7b924020c2c7c8d485100429449f4d0221e73ddf4f00ea197efa539a29d9cd74528928371a9640c05f8cf27f2b37348bec7b3d3a9c1006bcc304ebc85fbd7a

  • \MSOCache\All Users\sppsvc.exe
    Filesize

    1.1MB

    MD5

    7b2cc7bd31191fc112de760c996e56a1

    SHA1

    8c87bbdd79eda5b6f6612a9d828d10924071e959

    SHA256

    168dd964cedab347b56461282ab409b5fb19de28f50f635d7071dfce39c04ed5

    SHA512

    9c7b924020c2c7c8d485100429449f4d0221e73ddf4f00ea197efa539a29d9cd74528928371a9640c05f8cf27f2b37348bec7b3d3a9c1006bcc304ebc85fbd7a

  • memory/648-109-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/648-112-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/648-108-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/648-107-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/648-106-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/648-104-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/648-103-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/648-114-0x0000000004510000-0x0000000004550000-memory.dmp
    Filesize

    256KB

  • memory/648-113-0x0000000004510000-0x0000000004550000-memory.dmp
    Filesize

    256KB

  • memory/648-117-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/1048-67-0x00000000046E0000-0x0000000004720000-memory.dmp
    Filesize

    256KB

  • memory/1048-102-0x0000000006120000-0x0000000006321000-memory.dmp
    Filesize

    2.0MB

  • memory/1048-73-0x0000000004F30000-0x0000000004F3C000-memory.dmp
    Filesize

    48KB

  • memory/1048-74-0x0000000004F40000-0x0000000004F4A000-memory.dmp
    Filesize

    40KB

  • memory/1048-75-0x0000000004F50000-0x0000000004F5C000-memory.dmp
    Filesize

    48KB

  • memory/1048-71-0x0000000004ED0000-0x0000000004ED8000-memory.dmp
    Filesize

    32KB

  • memory/1048-70-0x00000000046C0000-0x00000000046D6000-memory.dmp
    Filesize

    88KB

  • memory/1048-69-0x0000000001FC0000-0x0000000001FDC000-memory.dmp
    Filesize

    112KB

  • memory/1048-68-0x0000000001E20000-0x0000000001E28000-memory.dmp
    Filesize

    32KB

  • memory/1048-100-0x0000000006120000-0x0000000006321000-memory.dmp
    Filesize

    2.0MB

  • memory/1048-65-0x00000000046E0000-0x0000000004720000-memory.dmp
    Filesize

    256KB

  • memory/1048-72-0x0000000004EE0000-0x0000000004EF2000-memory.dmp
    Filesize

    72KB

  • memory/1048-66-0x00000000046E0000-0x0000000004720000-memory.dmp
    Filesize

    256KB

  • memory/1048-105-0x0000000006120000-0x0000000006321000-memory.dmp
    Filesize

    2.0MB

  • memory/1048-54-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/1048-64-0x00000000046E0000-0x0000000004720000-memory.dmp
    Filesize

    256KB

  • memory/1048-63-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/1048-62-0x0000000004720000-0x0000000004802000-memory.dmp
    Filesize

    904KB

  • memory/1048-59-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/1048-58-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/1048-57-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/1048-56-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB

  • memory/1048-55-0x0000000000400000-0x0000000000601000-memory.dmp
    Filesize

    2.0MB