Analysis

  • max time kernel
    64s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    30-01-2023 01:11

General

  • Target

    ca9e6c2fd24c050a88fa6435a2352665.exe

  • Size

    2.6MB

  • MD5

    ca9e6c2fd24c050a88fa6435a2352665

  • SHA1

    d653a50565cba4820e118a8c80dcf15129623d4d

  • SHA256

    abc85c0172af7fd9f02deb9c2d39a6416820f94ab98683b815566cee52afac16

  • SHA512

    5ab9b9469371d50d6c86834a6553de9feeadb3f02e7369ed46c02f77cbf8832293639dd973ef921fc70b6be42dd49289e8bbccb83cb0364d3a7d670f3fdbe3a9

  • SSDEEP

    49152:ObA3+EwmizGbCD5mKTnkPCCR9JLQ7v4p1P05BVKNiWV053rwEJMZa:ObOwmiUoX7kPCCR/Li4p1IVKNk53rwEL

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 36 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 2 IoCs
  • 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
  • Drops file in Program Files 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 36 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ca9e6c2fd24c050a88fa6435a2352665.exe
    "C:\Users\Admin\AppData\Local\Temp\ca9e6c2fd24c050a88fa6435a2352665.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2028
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\reviewintohostDllSvc\hK5FNabO14OlK1cjw5m.vbe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1428
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\reviewintohostDllSvc\RgJcLnW865IX.bat" "
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1712
        • C:\reviewintohostDllSvc\Chaindriverdll.exe
          "C:\reviewintohostDllSvc\Chaindriverdll.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:764
          • C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\lsass.exe
            "C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\lsass.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1732
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 5 /tr "'C:\Users\Admin\Downloads\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:596
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Admin\Downloads\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:980
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 6 /tr "'C:\Users\Admin\Downloads\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:616
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\Proof.es\smss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1964
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\Proof.es\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1512
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 8 /tr "'C:\MSOCache\All Users\{90140000-002C-0409-0000-0000000FF1CE}-C\Proof.es\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1916
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "servicess" /sc MINUTE /mo 11 /tr "'C:\Users\All Users\Desktop\services.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1636
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Users\All Users\Desktop\services.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1160
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "servicess" /sc MINUTE /mo 14 /tr "'C:\Users\All Users\Desktop\services.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1260
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 12 /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\smss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:800
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1084
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 9 /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1900
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 5 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\smss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1316
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smss" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:968
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "smsss" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0011-0000-0000-0000000FF1CE}-C\smss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2020
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 9 /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:992
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1616
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2040
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 7 /tr "'C:\reviewintohostDllSvc\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:472
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\reviewintohostDllSvc\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:784
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\reviewintohostDllSvc\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:2036
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 14 /tr "'C:\Users\Default\Links\csrss.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:932
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrss" /sc ONLOGON /tr "'C:\Users\Default\Links\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:276
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "csrssc" /sc MINUTE /mo 8 /tr "'C:\Users\Default\Links\csrss.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:304
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 7 /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\lsass.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1912
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:596
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 11 /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\lsass.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1012
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 5 /tr "'C:\Program Files (x86)\Windows Photo Viewer\winlogon.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:692
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Program Files (x86)\Windows Photo Viewer\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:840
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 6 /tr "'C:\Program Files (x86)\Windows Photo Viewer\winlogon.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1356
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "servicess" /sc MINUTE /mo 6 /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\services.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:836
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "services" /sc ONLOGON /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\services.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 "servicess" /sc MINUTE /mo 11 /tr "'C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\services.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1672
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Uninstall Information\System.exe'" /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1100
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "System" /sc ONLOGON /tr "'C:\Program Files (x86)\Uninstall Information\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1172
  • C:\Windows\system32\schtasks.exe
    schtasks.exe /create /tn "SystemS" /sc MINUTE /mo 13 /tr "'C:\Program Files (x86)\Uninstall Information\System.exe'" /rl HIGHEST /f
    1⤵
    • Process spawned unexpected child process
    • Creates scheduled task(s)
    PID:1260

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

2
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\lsass.exe
    Filesize

    2.2MB

    MD5

    d6d0f424bfa5d2e7c336ea5caad9b170

    SHA1

    23d70bf4aefa973046b22c343fe9e42b9d4155a1

    SHA256

    7084a265c7a383a2e2e27c5a0d542f2aec2ea9ba1ca4bd34667996d715d37b27

    SHA512

    aa0fbd910bc326b7099a415c358aac21601deee404f2604126bb41ace1d2879220eacde34f32d337d52bf3c6707931500a70c8c26dfa95b34bf00e4d55b6ea1a

  • C:\Recovery\31001cc2-2a3d-11ed-9244-9c23e66b04e4\lsass.exe
    Filesize

    2.2MB

    MD5

    d6d0f424bfa5d2e7c336ea5caad9b170

    SHA1

    23d70bf4aefa973046b22c343fe9e42b9d4155a1

    SHA256

    7084a265c7a383a2e2e27c5a0d542f2aec2ea9ba1ca4bd34667996d715d37b27

    SHA512

    aa0fbd910bc326b7099a415c358aac21601deee404f2604126bb41ace1d2879220eacde34f32d337d52bf3c6707931500a70c8c26dfa95b34bf00e4d55b6ea1a

  • C:\reviewintohostDllSvc\Chaindriverdll.exe
    Filesize

    2.2MB

    MD5

    d6d0f424bfa5d2e7c336ea5caad9b170

    SHA1

    23d70bf4aefa973046b22c343fe9e42b9d4155a1

    SHA256

    7084a265c7a383a2e2e27c5a0d542f2aec2ea9ba1ca4bd34667996d715d37b27

    SHA512

    aa0fbd910bc326b7099a415c358aac21601deee404f2604126bb41ace1d2879220eacde34f32d337d52bf3c6707931500a70c8c26dfa95b34bf00e4d55b6ea1a

  • C:\reviewintohostDllSvc\Chaindriverdll.exe
    Filesize

    2.2MB

    MD5

    d6d0f424bfa5d2e7c336ea5caad9b170

    SHA1

    23d70bf4aefa973046b22c343fe9e42b9d4155a1

    SHA256

    7084a265c7a383a2e2e27c5a0d542f2aec2ea9ba1ca4bd34667996d715d37b27

    SHA512

    aa0fbd910bc326b7099a415c358aac21601deee404f2604126bb41ace1d2879220eacde34f32d337d52bf3c6707931500a70c8c26dfa95b34bf00e4d55b6ea1a

  • C:\reviewintohostDllSvc\RgJcLnW865IX.bat
    Filesize

    44B

    MD5

    93d7ee0683bafe1efc043cfd7bf8ca8f

    SHA1

    8e38233ffc87bea1d0b479dcee37defc788a1141

    SHA256

    1eb4ad6004d70625a5b8ddc143093b93ce7a59abb8fac01b315e4815d1dcfd1d

    SHA512

    046d3b8601772431c7aa060186e3f9bb358a479d35af4557e3b2820aab01c8429a3df032141f2feb4cd9fa87e74e8513a168fe45d0085474fcc0a93c1cd3ab71

  • C:\reviewintohostDllSvc\hK5FNabO14OlK1cjw5m.vbe
    Filesize

    209B

    MD5

    1154819bdb0f3db2baea3f24c737fb1e

    SHA1

    ee6440e6dde7bf316764066769308ce27d6b12b4

    SHA256

    83cb8703cd9dadf0d1147f1fc0b7791935c41e037c4eb30cb672901ccb0e6769

    SHA512

    402cbb74d62523179f20a12b4fcb2706c119f8054e6ff870bd83e73ce3aacca490001b0a2b2da59affe4fa09491ff72bc27c6e4d95fad43cc12721a26c913ca4

  • \reviewintohostDllSvc\Chaindriverdll.exe
    Filesize

    2.2MB

    MD5

    d6d0f424bfa5d2e7c336ea5caad9b170

    SHA1

    23d70bf4aefa973046b22c343fe9e42b9d4155a1

    SHA256

    7084a265c7a383a2e2e27c5a0d542f2aec2ea9ba1ca4bd34667996d715d37b27

    SHA512

    aa0fbd910bc326b7099a415c358aac21601deee404f2604126bb41ace1d2879220eacde34f32d337d52bf3c6707931500a70c8c26dfa95b34bf00e4d55b6ea1a

  • \reviewintohostDllSvc\Chaindriverdll.exe
    Filesize

    2.2MB

    MD5

    d6d0f424bfa5d2e7c336ea5caad9b170

    SHA1

    23d70bf4aefa973046b22c343fe9e42b9d4155a1

    SHA256

    7084a265c7a383a2e2e27c5a0d542f2aec2ea9ba1ca4bd34667996d715d37b27

    SHA512

    aa0fbd910bc326b7099a415c358aac21601deee404f2604126bb41ace1d2879220eacde34f32d337d52bf3c6707931500a70c8c26dfa95b34bf00e4d55b6ea1a

  • memory/764-67-0x00000000003E0000-0x00000000003F6000-memory.dmp
    Filesize

    88KB

  • memory/764-63-0x0000000000000000-mapping.dmp
  • memory/764-65-0x0000000000D60000-0x0000000000F98000-memory.dmp
    Filesize

    2.2MB

  • memory/764-66-0x00000000003C0000-0x00000000003DC000-memory.dmp
    Filesize

    112KB

  • memory/764-68-0x0000000000480000-0x0000000000490000-memory.dmp
    Filesize

    64KB

  • memory/764-69-0x0000000000490000-0x00000000004E6000-memory.dmp
    Filesize

    344KB

  • memory/1428-55-0x0000000000000000-mapping.dmp
  • memory/1712-59-0x0000000000000000-mapping.dmp
  • memory/1732-70-0x0000000000000000-mapping.dmp
  • memory/1732-73-0x00000000003E0000-0x0000000000618000-memory.dmp
    Filesize

    2.2MB

  • memory/2028-54-0x0000000075A11000-0x0000000075A13000-memory.dmp
    Filesize

    8KB