Analysis

  • max time kernel
    85s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/01/2024, 10:02

General

  • Target
    48ad5d8112df0d5b74f71fd25ccd4e18.exe
  • Size 3.9MB
  • Sample240107-l26cksbgf3
  • SHA256 82e531dd4163ca5716a8b2f3feb188fc7fdbf8cac0270aa76664925fdd5124e2
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • nullmixer

C2
  • http://watira.xyz/

Extracted

Family
  • vidar

Version
  • 39.9

Botnet
  • 706

C2
  • https://prophefliloc.tumblr.com/

Attributes
  • profile_id

    706

Extracted

Family
  • smokeloader

Botnet
  • pub5

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://aucmoney.com/upload/

  • http://thegymmum.com/upload/

  • http://atvcampingtrips.com/upload/

  • http://kuapakualaman.com/upload/

  • http://renatazarazua.com/upload/

  • http://nasufmutlu.com/upload/

rc4.i32
rc4.i32

Signatures

  • NullMixer

    NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.

  • PrivateLoader

    PrivateLoader is a downloader sold as a pay-per-install malware distribution service.

  • RisePro

    RisePro stealer is an infostealer distributed by PrivateLoader.

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 2 IoCs
  • ASPack v2.12-2.42 3 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 16 IoCs
  • Loads dropped DLL 7 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 2 IoCs

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

  • Drops file in Windows directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

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

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

  • Modifies data under HKEY_USERS 11 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 28 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\48ad5d8112df0d5b74f71fd25ccd4e18.exe
    "C:\Users\Admin\AppData\Local\Temp\48ad5d8112df0d5b74f71fd25ccd4e18.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:4452
    • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\setup_install.exe
      "C:\Users\Admin\AppData\Local\Temp\7zS4618E977\setup_install.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:2024
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c 0035b9e6fdaf9.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1588
        • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\0035b9e6fdaf9.exe
          0035b9e6fdaf9.exe
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious use of WriteProcessMemory
          PID:3876
          • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\BUILD1~1.EXE
            C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\BUILD1~1.EXE
            5⤵
            • Executes dropped EXE
            PID:4688
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2024 -s 576
        3⤵
        • Program crash
        PID:4480
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c 81edfb0db828.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3712
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c cb3f07883441a5d6.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4592
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c 731da7284717.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1436
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c 0b0f89497d35095.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1576
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c 27e380c23ad33.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3068
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c 7da174d16d4.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1192
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c 53d58f3832.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2896
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c 95714f41791.exe
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2360
  • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\53d58f3832.exe
    53d58f3832.exe
    1⤵
    • Executes dropped EXE
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4140
  • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\731da7284717.exe
    "C:\Users\Admin\AppData\Local\Temp\7zS4618E977\731da7284717.exe" -a
    1⤵
    • Executes dropped EXE
    PID:4968
  • C:\Users\Admin\AppData\Local\Temp\chrome2.exe
    "C:\Users\Admin\AppData\Local\Temp\chrome2.exe"
    1⤵
    • Executes dropped EXE
    PID:4972
  • C:\Users\Admin\AppData\Local\Temp\setup.exe
    "C:\Users\Admin\AppData\Local\Temp\setup.exe"
    1⤵
    • Executes dropped EXE
    • Drops file in Windows directory
    PID:3660
    • C:\Windows\winnetdriv.exe
      "C:\Users\Admin\AppData\Local\Temp\setup.exe" 1704621818 0
      2⤵
      • Executes dropped EXE
      PID:1448
  • C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1cr.exe
    C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\1cr.exe
    1⤵
    • Executes dropped EXE
    PID:756
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 2024 -ip 2024
    1⤵
      PID:468
    • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\27e380c23ad33.exe
      27e380c23ad33.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:1068
    • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\cb3f07883441a5d6.exe
      cb3f07883441a5d6.exe
      1⤵
      • Executes dropped EXE
      PID:2296
    • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\7da174d16d4.exe
      7da174d16d4.exe
      1⤵
      • Executes dropped EXE
      PID:2516
    • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\81edfb0db828.exe
      81edfb0db828.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4820
    • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\731da7284717.exe
      731da7284717.exe
      1⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:2472
    • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\0b0f89497d35095.exe
      0b0f89497d35095.exe
      1⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1288
    • C:\Users\Admin\AppData\Local\Temp\7zS4618E977\95714f41791.exe
      95714f41791.exe
      1⤵
      • Executes dropped EXE
      PID:5096
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 2516 -ip 2516
      1⤵
        PID:396
      • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
        "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
        1⤵
        • Modifies data under HKEY_USERS
        PID:452

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            Install.cmd

            • Path C:\Users\Admin\AppData\Local\Temp\7zS396A.tmp\Install.cmd
            • Size 51B
            • SHA256 9a9e87561a30b24ad4ad95c763ec931a7cfcc0f4a5c23d12336807a61b089d7d
            • MD5 SHA1 SHA512

            0b0f89497d35095.exe

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\0b0f89497d35095.exe
            • Size 83KB
            • SHA256 a1da52dabeaff4e9712949548cce00c8786b59fb1187d9823b94d2e7ca75e75f
            • MD5 SHA1 SHA512 SSDEEP

            731da7284717.exe

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\731da7284717.exe
            • Size 56KB
            • SHA256 78958d664b1c140f2b45e56c4706108eeb5f14756977e2efd3409f8a788d3c98
            • MD5 SHA1 SHA512 SSDEEP

            95714f41791.exe

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\95714f41791.exe
            • Size 131KB
            • SHA256 bad9ea3883bad46c6b1be8094cd9cfe28db41a981eb0ce5f4aa1c76193e6a1bf
            • MD5 SHA1 SHA512 SSDEEP

            libcurl.dll

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\libcurl.dll
            • Size 218KB
            • SHA256 0de53e7be51789adaec5294346220b20f793e7f8d153a3c110a92d658760697e
            • MD5 SHA1 SHA512 SSDEEP

            libcurlpp.dll

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\libcurlpp.dll
            • Size 54KB
            • SHA256 43e86d650a68f1f91fa2f4375aff2720e934aa78fa3d33e06363122bf5a9535f
            • MD5 SHA1 SHA512 SSDEEP

            libgcc_s_dw2-1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\libgcc_s_dw2-1.dll
            • Size 113KB
            • SHA256 59a466f77584438fc3abc0f43edc0fc99d41851726827a008841f05cfe12da7e
            • MD5 SHA1 SHA512 SSDEEP

            libstdc++-6.dll

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\libstdc++-6.dll
            • Size 647KB
            • SHA256 97de47068327bb822b33c7106f9cbb489480901a6749513ef5c31d229dcaca87
            • MD5 SHA1 SHA512 SSDEEP

            libwinpthread-1.dll

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\libwinpthread-1.dll
            • Size 69KB
            • SHA256 509cb1d1443b623a02562ac760bced540e327c65157ffa938a22f75e38155723
            • MD5 SHA1 SHA512 SSDEEP

            setup_install.exe

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\setup_install.exe
            • Size 124KB
            • SHA256 8d87a4093c7c0e39ba64bd47acd82719307037e086fa907ed530d505ea8b3540
            • MD5 SHA1 SHA512 SSDEEP

            setup_install.exe

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\setup_install.exe
            • Size 79KB
            • SHA256 ad665a1dd391bfaae019bb51ba72b0791c17e892acc3efd69aa7e14849ba9a16
            • MD5 SHA1 SHA512 SSDEEP

            setup_install.exe

            • Path C:\Users\Admin\AppData\Local\Temp\7zS4618E977\setup_install.exe
            • Size 1.4MB
            • SHA256 6684153e0baae31eddfc744ca7a28a6897df073e467ebf138f2df5604c726c0d
            • MD5 SHA1 SHA512 SSDEEP

            BUILD1~1.EXE

            • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\BUILD1~1.EXE
            • Size 117KB
            • SHA256 e2bb9ee3616cd827cc3ee297cbe24cfbd2ded4d9efe894e68453f6cfbf18e4c5
            • MD5 SHA1 SHA512 SSDEEP

            BUILD1~1.EXE

            • Path C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\BUILD1~1.EXE
            • Size 73KB
            • SHA256 305dd91a561dfe917bd077f43d9290567cf0c58291bca6e503d3d7ad39d02197
            • MD5 SHA1 SHA512 SSDEEP

            memory/756-134-0x0000000005690000-0x000000000569A000-memory.dmp

            memory/756-111-0x0000000005C10000-0x00000000061B4000-memory.dmp

            memory/756-137-0x00000000059D0000-0x0000000005A6C000-memory.dmp

            memory/756-187-0x0000000005640000-0x0000000005650000-memory.dmp

            memory/756-182-0x0000000002FA0000-0x0000000002FB2000-memory.dmp

            memory/756-106-0x0000000000C70000-0x0000000000DB2000-memory.dmp

            memory/756-113-0x0000000005700000-0x0000000005792000-memory.dmp

            memory/756-143-0x00000000734D0000-0x0000000073C80000-memory.dmp

            memory/1068-108-0x0000000001780000-0x00000000017A0000-memory.dmp

            memory/1068-112-0x00000000017A0000-0x00000000017A6000-memory.dmp

            memory/1068-96-0x0000000000FA0000-0x0000000000FCC000-memory.dmp

            memory/1068-102-0x0000000001770000-0x0000000001776000-memory.dmp

            memory/1068-142-0x00007FFCBDC40000-0x00007FFCBE701000-memory.dmp

            memory/1068-138-0x000000001BEE0000-0x000000001BEF0000-memory.dmp

            memory/1288-103-0x00000000734D0000-0x0000000073C80000-memory.dmp

            memory/1288-139-0x00000000734D0000-0x0000000073C80000-memory.dmp

            memory/1288-91-0x00000000003F0000-0x00000000004DE000-memory.dmp

            memory/1448-157-0x0000000000B30000-0x0000000000C14000-memory.dmp

            memory/2024-163-0x0000000064940000-0x0000000064959000-memory.dmp

            memory/2024-44-0x000000006B280000-0x000000006B2A6000-memory.dmp

            memory/2024-32-0x0000000000C60000-0x0000000000CEF000-memory.dmp

            memory/2024-161-0x0000000000400000-0x00000000009DB000-memory.dmp

            memory/2024-166-0x000000006B440000-0x000000006B4CF000-memory.dmp

            memory/2024-167-0x000000006EB40000-0x000000006EB63000-memory.dmp

            memory/2024-168-0x000000006FE40000-0x000000006FFC6000-memory.dmp

            memory/2024-165-0x000000006B280000-0x000000006B2A6000-memory.dmp

            memory/2024-41-0x000000006FE40000-0x000000006FFC6000-memory.dmp

            memory/2024-36-0x000000006B440000-0x000000006B4CF000-memory.dmp

            memory/2024-28-0x000000006B280000-0x000000006B2A6000-memory.dmp

            memory/2024-34-0x000000006B440000-0x000000006B4CF000-memory.dmp

            memory/2024-33-0x000000006B440000-0x000000006B4CF000-memory.dmp

            memory/2024-38-0x000000006FE40000-0x000000006FFC6000-memory.dmp

            memory/2024-43-0x000000006B280000-0x000000006B2A6000-memory.dmp

            memory/2024-42-0x000000006FE40000-0x000000006FFC6000-memory.dmp

            memory/2024-40-0x000000006FE40000-0x000000006FFC6000-memory.dmp

            memory/2024-39-0x000000006FE40000-0x000000006FFC6000-memory.dmp

            memory/2024-37-0x000000006B440000-0x000000006B4CF000-memory.dmp

            memory/2024-35-0x0000000064940000-0x0000000064959000-memory.dmp

            memory/2296-144-0x0000000002D50000-0x0000000002E50000-memory.dmp

            memory/2296-140-0x0000000000400000-0x0000000002CCE000-memory.dmp

            memory/2296-136-0x0000000004840000-0x00000000048DD000-memory.dmp

            memory/2296-188-0x0000000002D50000-0x0000000002E50000-memory.dmp

            memory/3328-169-0x0000000000ED0000-0x0000000000EE6000-memory.dmp

            memory/3660-145-0x0000000000400000-0x00000000004E4000-memory.dmp

            memory/4140-170-0x0000000000400000-0x0000000002C72000-memory.dmp

            memory/4140-107-0x0000000002E90000-0x0000000002F90000-memory.dmp

            memory/4140-109-0x0000000004780000-0x0000000004789000-memory.dmp

            memory/4140-128-0x0000000000400000-0x0000000002C72000-memory.dmp

            memory/4820-97-0x00007FFCBDC40000-0x00007FFCBE701000-memory.dmp

            memory/4820-186-0x000000001ACC0000-0x000000001ACD0000-memory.dmp

            memory/4820-105-0x000000001ACC0000-0x000000001ACD0000-memory.dmp

            memory/4820-81-0x00000000000D0000-0x00000000000D8000-memory.dmp

            memory/4972-126-0x0000000000990000-0x00000000009A0000-memory.dmp

            memory/4972-190-0x000000001CD30000-0x000000001CD32000-memory.dmp

            memory/4972-189-0x0000000002F00000-0x0000000002F0E000-memory.dmp

            memory/4972-141-0x00007FFCBDC40000-0x00007FFCBE701000-memory.dmp