Analysis

  • max time kernel
    151s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27-09-2021 09:42

General

  • Target

    273f7d0c1817f1375bc7795c595d4455b069393eab6dc77d87bd9517859a7113.exe

  • Size

    135KB

  • MD5

    f488c2fc7f0a051a5e3eb0b72832c43a

  • SHA1

    d7c01c5dbaf8420a088bcadab28ce5b756791a51

  • SHA256

    273f7d0c1817f1375bc7795c595d4455b069393eab6dc77d87bd9517859a7113

  • SHA512

    fa7d67699ed034c85184aa71dee6094b31e7a7376f9afe2e246d98bd510b406cf0ddfbb89755f4d37993b7c4add6fee5b1289e99db084cd351b0cda1bd4cf6de

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://naghenrietti1.top/

http://kimballiett2.top/

http://xadriettany3.top/

http://jebeccallis4.top/

http://nityanneron5.top/

http://umayaniela6.top/

http://lynettaram7.top/

http://sadineyalas8.top/

http://geenaldencia9.top/

http://aradysiusep10.top/

rc4.i32
rc4.i32

Extracted

Family

raccoon

Botnet

c524886d28411e80660e573d1de51f17556d70f6

Attributes
  • url4cnc

    https://t.me/hobabastrepsils

rc4.plain
rc4.plain

Extracted

Family

raccoon

Botnet

5ff0ccb2bc00dc52d1ad09949e9c7663bc9ca4d4

Attributes
  • url4cnc

    https://t.me/agrybirdsgamerept

rc4.plain
rc4.plain

Extracted

Family

redline

Botnet

karma

C2

94.103.9.133:39323

Extracted

Family

redline

Botnet

Bliss

C2

185.237.98.178:62607

Signatures

  • Arkei

    Arkei is an infostealer written in C++.

  • Generic Chinese Botnet

    A botnet originating from China which is currently unnamed publicly.

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 4 IoCs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Tofsee

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

  • Windows security bypass 2 TTPs
  • xmrig

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

  • Arkei Stealer Payload 1 IoCs
  • Chinese Botnet Payload 1 IoCs
  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • XMRig Miner Payload 3 IoCs
  • Creates new service(s) 1 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 11 IoCs
  • Modifies Windows Firewall 1 TTPs
  • Sets service image path in registry 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 9 IoCs
  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Launches sc.exe

    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.

  • Program crash 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 12 IoCs
  • Modifies registry class 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 8 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\273f7d0c1817f1375bc7795c595d4455b069393eab6dc77d87bd9517859a7113.exe
    "C:\Users\Admin\AppData\Local\Temp\273f7d0c1817f1375bc7795c595d4455b069393eab6dc77d87bd9517859a7113.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:632
    • C:\Users\Admin\AppData\Local\Temp\273f7d0c1817f1375bc7795c595d4455b069393eab6dc77d87bd9517859a7113.exe
      "C:\Users\Admin\AppData\Local\Temp\273f7d0c1817f1375bc7795c595d4455b069393eab6dc77d87bd9517859a7113.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:904
  • C:\Users\Admin\AppData\Local\Temp\E980.exe
    C:\Users\Admin\AppData\Local\Temp\E980.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:2396
  • C:\Users\Admin\AppData\Local\Temp\ECBD.exe
    C:\Users\Admin\AppData\Local\Temp\ECBD.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    PID:2736
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2736 -s 1284
      2⤵
      • Program crash
      • Suspicious use of AdjustPrivilegeToken
      PID:3924
  • C:\Users\Admin\AppData\Local\Temp\EFCB.exe
    C:\Users\Admin\AppData\Local\Temp\EFCB.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:3100
    • C:\Users\Admin\AppData\Local\Temp\SindonsWelfare_2021-09-26_15-02.exe
      "C:\Users\Admin\AppData\Local\Temp\SindonsWelfare_2021-09-26_15-02.exe"
      2⤵
      • Executes dropped EXE
      PID:2464
    • C:\Users\Admin\AppData\Local\Temp\SolanumsYoghurt_2021-09-26_14-52.exe
      "C:\Users\Admin\AppData\Local\Temp\SolanumsYoghurt_2021-09-26_14-52.exe"
      2⤵
      • Executes dropped EXE
      PID:3480
    • C:\Users\Admin\AppData\Local\Temp\fbf.exe
      "C:\Users\Admin\AppData\Local\Temp\fbf.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Enumerates connected drives
      • Checks processor information in registry
      • Suspicious use of SetWindowsHookEx
      PID:1020
  • C:\Users\Admin\AppData\Local\Temp\F441.exe
    C:\Users\Admin\AppData\Local\Temp\F441.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:684
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zmccbsnm\
      2⤵
        PID:3880
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vplrcmek.exe" C:\Windows\SysWOW64\zmccbsnm\
        2⤵
          PID:2236
        • C:\Windows\SysWOW64\sc.exe
          "C:\Windows\System32\sc.exe" create zmccbsnm binPath= "C:\Windows\SysWOW64\zmccbsnm\vplrcmek.exe /d\"C:\Users\Admin\AppData\Local\Temp\F441.exe\"" type= own start= auto DisplayName= "wifi support"
          2⤵
            PID:3916
          • C:\Windows\SysWOW64\sc.exe
            "C:\Windows\System32\sc.exe" description zmccbsnm "wifi internet conection"
            2⤵
              PID:852
            • C:\Windows\SysWOW64\sc.exe
              "C:\Windows\System32\sc.exe" start zmccbsnm
              2⤵
                PID:3584
              • 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⤵
                  PID:1012
              • C:\Users\Admin\AppData\Local\Temp\F8C6.exe
                C:\Users\Admin\AppData\Local\Temp\F8C6.exe
                1⤵
                • Executes dropped EXE
                PID:3556
              • C:\Users\Admin\AppData\Local\Temp\B.exe
                C:\Users\Admin\AppData\Local\Temp\B.exe
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:3200
                • C:\Users\Admin\AppData\Local\Temp\B.exe
                  "C:\Users\Admin\AppData\Local\Temp\B.exe"
                  2⤵
                  • Executes dropped EXE
                  • Loads dropped DLL
                  PID:856
              • C:\Windows\SysWOW64\zmccbsnm\vplrcmek.exe
                C:\Windows\SysWOW64\zmccbsnm\vplrcmek.exe /d"C:\Users\Admin\AppData\Local\Temp\F441.exe"
                1⤵
                • Executes dropped EXE
                • Suspicious use of SetThreadContext
                • Suspicious use of WriteProcessMemory
                PID:4016
                • C:\Windows\SysWOW64\svchost.exe
                  svchost.exe
                  2⤵
                  • Drops file in System32 directory
                  • Suspicious use of SetThreadContext
                  • Modifies data under HKEY_USERS
                  PID:1156
                  • C:\Windows\SysWOW64\svchost.exe
                    svchost.exe -o fastpool.xyz:10060 -u 9rLbTvsApFs3i3ojk5hDKicMNRQbxxFGwJA2hNC6NoZZDQN5tTFbhviFm4W3koxSrPg87Lnif7qxFYh9xpTJz1cT6B17Ph4.50000 -p x -k -a cn/half
                    3⤵
                      PID:912

                Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                • memory/632-116-0x0000000000500000-0x0000000000509000-memory.dmp

                  Filesize

                  36KB

                • memory/684-154-0x0000000000400000-0x00000000004AD000-memory.dmp

                  Filesize

                  692KB

                • memory/684-153-0x00000000004B0000-0x00000000005FA000-memory.dmp

                  Filesize

                  1.3MB

                • memory/856-167-0x0000000000400000-0x0000000000493000-memory.dmp

                  Filesize

                  588KB

                • memory/856-160-0x0000000000400000-0x0000000000493000-memory.dmp

                  Filesize

                  588KB

                • memory/904-114-0x0000000000400000-0x0000000000409000-memory.dmp

                  Filesize

                  36KB

                • memory/912-234-0x0000000002F00000-0x0000000002FF1000-memory.dmp

                  Filesize

                  964KB

                • memory/912-239-0x0000000002F00000-0x0000000002FF1000-memory.dmp

                  Filesize

                  964KB

                • memory/1020-206-0x0000000000400000-0x00000000004C4000-memory.dmp

                  Filesize

                  784KB

                • memory/1020-240-0x0000000010000000-0x0000000010018000-memory.dmp

                  Filesize

                  96KB

                • memory/1020-204-0x0000000002170000-0x000000000222C000-memory.dmp

                  Filesize

                  752KB

                • memory/1156-174-0x0000000000760000-0x0000000000775000-memory.dmp

                  Filesize

                  84KB

                • memory/2396-142-0x0000000005F90000-0x0000000005F91000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-139-0x0000000005EA0000-0x0000000005EA1000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-145-0x0000000005F00000-0x0000000005F01000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-123-0x00000000779F0000-0x0000000077B7E000-memory.dmp

                  Filesize

                  1.6MB

                • memory/2396-140-0x00000000060B0000-0x00000000060B1000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-232-0x0000000009070000-0x0000000009071000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-185-0x0000000007540000-0x0000000007541000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-137-0x00000000065B0000-0x00000000065B1000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-130-0x0000000000B60000-0x0000000000B61000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-191-0x0000000007880000-0x0000000007881000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-189-0x0000000007930000-0x0000000007931000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-188-0x0000000007710000-0x0000000007711000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-186-0x0000000007C40000-0x0000000007C41000-memory.dmp

                  Filesize

                  4KB

                • memory/2396-148-0x0000000005F40000-0x0000000005F41000-memory.dmp

                  Filesize

                  4KB

                • memory/2428-117-0x0000000000410000-0x0000000000426000-memory.dmp

                  Filesize

                  88KB

                • memory/2464-230-0x0000000004AF4000-0x0000000004AF6000-memory.dmp

                  Filesize

                  8KB

                • memory/2464-202-0x0000000000720000-0x000000000073F000-memory.dmp

                  Filesize

                  124KB

                • memory/2464-207-0x0000000004A00000-0x0000000004A1E000-memory.dmp

                  Filesize

                  120KB

                • memory/2464-210-0x0000000000400000-0x00000000004C5000-memory.dmp

                  Filesize

                  788KB

                • memory/2464-209-0x00000000004D0000-0x000000000061A000-memory.dmp

                  Filesize

                  1.3MB

                • memory/2464-214-0x0000000004AF0000-0x0000000004AF1000-memory.dmp

                  Filesize

                  4KB

                • memory/2464-227-0x0000000004AF2000-0x0000000004AF3000-memory.dmp

                  Filesize

                  4KB

                • memory/2464-231-0x0000000004AF3000-0x0000000004AF4000-memory.dmp

                  Filesize

                  4KB

                • memory/2736-132-0x00000000021D0000-0x00000000021FD000-memory.dmp

                  Filesize

                  180KB

                • memory/2736-133-0x0000000000400000-0x000000000044D000-memory.dmp

                  Filesize

                  308KB

                • memory/3100-128-0x00000000009F0000-0x00000000009F1000-memory.dmp

                  Filesize

                  4KB

                • memory/3200-157-0x0000000005700000-0x0000000005701000-memory.dmp

                  Filesize

                  4KB

                • memory/3200-159-0x0000000005670000-0x000000000568D000-memory.dmp

                  Filesize

                  116KB

                • memory/3200-152-0x0000000000D10000-0x0000000000D11000-memory.dmp

                  Filesize

                  4KB

                • memory/3200-156-0x0000000005800000-0x0000000005801000-memory.dmp

                  Filesize

                  4KB

                • memory/3200-155-0x0000000005D10000-0x0000000005D11000-memory.dmp

                  Filesize

                  4KB

                • memory/3480-220-0x0000000002513000-0x0000000002514000-memory.dmp

                  Filesize

                  4KB

                • memory/3480-218-0x0000000002512000-0x0000000002513000-memory.dmp

                  Filesize

                  4KB

                • memory/3480-201-0x0000000002430000-0x0000000002453000-memory.dmp

                  Filesize

                  140KB

                • memory/3480-208-0x0000000002460000-0x0000000002482000-memory.dmp

                  Filesize

                  136KB

                • memory/3480-216-0x0000000002510000-0x0000000002511000-memory.dmp

                  Filesize

                  4KB

                • memory/3480-212-0x0000000000400000-0x00000000004CB000-memory.dmp

                  Filesize

                  812KB

                • memory/3480-224-0x0000000002514000-0x0000000002516000-memory.dmp

                  Filesize

                  8KB

                • memory/3480-211-0x0000000000550000-0x000000000069A000-memory.dmp

                  Filesize

                  1.3MB

                • memory/3556-168-0x0000000000400000-0x00000000004F0000-memory.dmp

                  Filesize

                  960KB

                • memory/3556-166-0x0000000002010000-0x00000000020A0000-memory.dmp

                  Filesize

                  576KB

                • memory/4016-179-0x0000000000400000-0x00000000004AD000-memory.dmp

                  Filesize

                  692KB

                • memory/4016-177-0x00000000004B0000-0x000000000055E000-memory.dmp

                  Filesize

                  696KB