Analysis

  • max time kernel
    142s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-06-2022 05:25

General

  • Target

    32bccc3fff74705522284e13e8c382cb8b337ca6d5aa22e36e1183a498be603f.exe

  • Size

    4.3MB

  • MD5

    65ff785b3c3fd7b28efd2e4f6e4bddfb

  • SHA1

    e529676f41a9e87a40c59102e58e35be45e28fcc

  • SHA256

    32bccc3fff74705522284e13e8c382cb8b337ca6d5aa22e36e1183a498be603f

  • SHA512

    79fead17f47de53fa0e8d23e1ed9461563e5f45fe30c483eadbd774913c200e75e7b0eff6a5340315afbe53f57a5c3147da8a90937553094a6605519d89d1431

Malware Config

Extracted

Family

vidar

Version

10.1

Botnet

231

C2

http://tribecaflatstore.com/

Attributes
  • profile_id

    231

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

    suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern

  • Vidar Stealer 2 IoCs
  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 10 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • 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.

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Looks up external IP address via web service 1 IoCs

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

  • AutoIT Executable 4 IoCs

    AutoIT scripts compiled to PE executables.

  • Drops file in Program Files directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Creates scheduled task(s) 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\32bccc3fff74705522284e13e8c382cb8b337ca6d5aa22e36e1183a498be603f.exe
    "C:\Users\Admin\AppData\Local\Temp\32bccc3fff74705522284e13e8c382cb8b337ca6d5aa22e36e1183a498be603f.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:1728
    • C:\Program Files (x86)\LetsSee!\busshost.exe
      "C:\Program Files (x86)\LetsSee!\busshost.exe"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:932
    • C:\Program Files (x86)\LetsSee!\YTLoader.exe
      "C:\Program Files (x86)\LetsSee!\YTLoader.exe"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Enumerates system info in registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:936
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 936 -s 1180
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:1088
    • C:\Program Files (x86)\LetsSee!\conf.exe
      "C:\Program Files (x86)\LetsSee!\conf.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1632
      • C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\attachmentphoto.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\attachmentphoto.exe
        3⤵
        • Executes dropped EXE
        • Suspicious use of WriteProcessMemory
        PID:1864
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c SchTasks /create /SC MINUTE /TN 7ZipUnis /TR C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\volumfix.exe
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1428
          • C:\Windows\SysWOW64\schtasks.exe
            SchTasks /create /SC MINUTE /TN 7ZipUnis /TR C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\volumfix.exe
            5⤵
            • Creates scheduled task(s)
            PID:340
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c SchTasks /create /SC HOURLY /TN FlashServis /TR C:\ProgramData\FlashSys\CurlMSI.exe
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1084
          • C:\Windows\SysWOW64\schtasks.exe
            SchTasks /create /SC HOURLY /TN FlashServis /TR C:\ProgramData\FlashSys\CurlMSI.exe
            5⤵
            • Creates scheduled task(s)
            PID:268
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /k ping -n 2 localhost < nul & del /F /Q "C:\Program Files (x86)\LetsSee!\conf.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1432
        • C:\Windows\SysWOW64\PING.EXE
          ping -n 2 localhost
          4⤵
          • Runs ping.exe
          PID:1568
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {E08C4CA6-B7D5-4897-9C1F-4D2D4959DBCB} S-1-5-21-790309383-526510583-3802439154-1000:TVHJCWMH\Admin:Interactive:[1]
    1⤵
      PID:1084

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Execution

    Scheduled Task

    1
    T1053

    Persistence

    Scheduled Task

    1
    T1053

    Privilege Escalation

    Scheduled Task

    1
    T1053

    Credential Access

    Credentials in Files

    4
    T1081

    Discovery

    Query Registry

    3
    T1012

    System Information Discovery

    3
    T1082

    Remote System Discovery

    1
    T1018

    Collection

    Data from Local System

    4
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files (x86)\LetsSee!\YTLoader.exe
      Filesize

      3.0MB

      MD5

      adc9db2753fa3daa6a8156254ba2a5f1

      SHA1

      50ff27e2e1c4acc35768b93b73c03f7630027f04

      SHA256

      f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

      SHA512

      5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

    • C:\Program Files (x86)\LetsSee!\YTLoader.exe
      Filesize

      3.0MB

      MD5

      adc9db2753fa3daa6a8156254ba2a5f1

      SHA1

      50ff27e2e1c4acc35768b93b73c03f7630027f04

      SHA256

      f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

      SHA512

      5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

    • C:\Program Files (x86)\LetsSee!\busshost.exe
      Filesize

      728KB

      MD5

      35a1aab90a4c06bec878a095f5a45379

      SHA1

      20709a1631774fd21f93dd710e1c398df5e7b5ed

      SHA256

      c8717078951bcfebf8d180765f26e2a994fd5545fd7f71ad9353dbf24f90d915

      SHA512

      d94445dc92c524a56732bb0ea54fa5d09998293b8e1be4f28183659e7839af27c88a700a753e043253eb627436339dddcf1f5560911e225e4bceb1baed5d0f21

    • C:\Program Files (x86)\LetsSee!\conf.exe
      Filesize

      1.0MB

      MD5

      8670880cc194c53fb33adcfec30b1af5

      SHA1

      23a8227a18d2227e760266ba5d8610c8b07e023c

      SHA256

      c28fe399970b309437febd959a7f8346899faa5a7d1d157b38169ef7e4091aa5

      SHA512

      2774c525ecfbfea709d3c4193d250dc2263bf6926a0acaeae012fa97b4b5be0f8ffce037367b4a43323b27c8d0cd966b17b795ab2dff2f59a650ce412259138c

    • C:\Program Files (x86)\LetsSee!\conf.exe
      Filesize

      1.0MB

      MD5

      8670880cc194c53fb33adcfec30b1af5

      SHA1

      23a8227a18d2227e760266ba5d8610c8b07e023c

      SHA256

      c28fe399970b309437febd959a7f8346899faa5a7d1d157b38169ef7e4091aa5

      SHA512

      2774c525ecfbfea709d3c4193d250dc2263bf6926a0acaeae012fa97b4b5be0f8ffce037367b4a43323b27c8d0cd966b17b795ab2dff2f59a650ce412259138c

    • C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\attachmentphoto.exe
      Filesize

      1.0MB

      MD5

      8670880cc194c53fb33adcfec30b1af5

      SHA1

      23a8227a18d2227e760266ba5d8610c8b07e023c

      SHA256

      c28fe399970b309437febd959a7f8346899faa5a7d1d157b38169ef7e4091aa5

      SHA512

      2774c525ecfbfea709d3c4193d250dc2263bf6926a0acaeae012fa97b4b5be0f8ffce037367b4a43323b27c8d0cd966b17b795ab2dff2f59a650ce412259138c

    • C:\Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\attachmentphoto.exe
      Filesize

      1.0MB

      MD5

      8670880cc194c53fb33adcfec30b1af5

      SHA1

      23a8227a18d2227e760266ba5d8610c8b07e023c

      SHA256

      c28fe399970b309437febd959a7f8346899faa5a7d1d157b38169ef7e4091aa5

      SHA512

      2774c525ecfbfea709d3c4193d250dc2263bf6926a0acaeae012fa97b4b5be0f8ffce037367b4a43323b27c8d0cd966b17b795ab2dff2f59a650ce412259138c

    • \Program Files (x86)\LetsSee!\YTLoader.exe
      Filesize

      3.0MB

      MD5

      adc9db2753fa3daa6a8156254ba2a5f1

      SHA1

      50ff27e2e1c4acc35768b93b73c03f7630027f04

      SHA256

      f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

      SHA512

      5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

    • \Program Files (x86)\LetsSee!\YTLoader.exe
      Filesize

      3.0MB

      MD5

      adc9db2753fa3daa6a8156254ba2a5f1

      SHA1

      50ff27e2e1c4acc35768b93b73c03f7630027f04

      SHA256

      f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

      SHA512

      5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

    • \Program Files (x86)\LetsSee!\YTLoader.exe
      Filesize

      3.0MB

      MD5

      adc9db2753fa3daa6a8156254ba2a5f1

      SHA1

      50ff27e2e1c4acc35768b93b73c03f7630027f04

      SHA256

      f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

      SHA512

      5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

    • \Program Files (x86)\LetsSee!\YTLoader.exe
      Filesize

      3.0MB

      MD5

      adc9db2753fa3daa6a8156254ba2a5f1

      SHA1

      50ff27e2e1c4acc35768b93b73c03f7630027f04

      SHA256

      f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

      SHA512

      5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

    • \Program Files (x86)\LetsSee!\YTLoader.exe
      Filesize

      3.0MB

      MD5

      adc9db2753fa3daa6a8156254ba2a5f1

      SHA1

      50ff27e2e1c4acc35768b93b73c03f7630027f04

      SHA256

      f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

      SHA512

      5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

    • \Program Files (x86)\LetsSee!\YTLoader.exe
      Filesize

      3.0MB

      MD5

      adc9db2753fa3daa6a8156254ba2a5f1

      SHA1

      50ff27e2e1c4acc35768b93b73c03f7630027f04

      SHA256

      f8cc40321301d39f03eaa48d42cbbb2e953b694dc13ccf9d986032c621223fde

      SHA512

      5f7fca8da622035f3a83e562d727ccdd842d623ec376f93c75c3218bddd970c34a9efc66a33cfd6e52a398fa2ed090b890d05aecef53f65a22917d50d31a1195

    • \Program Files (x86)\LetsSee!\busshost.exe
      Filesize

      728KB

      MD5

      35a1aab90a4c06bec878a095f5a45379

      SHA1

      20709a1631774fd21f93dd710e1c398df5e7b5ed

      SHA256

      c8717078951bcfebf8d180765f26e2a994fd5545fd7f71ad9353dbf24f90d915

      SHA512

      d94445dc92c524a56732bb0ea54fa5d09998293b8e1be4f28183659e7839af27c88a700a753e043253eb627436339dddcf1f5560911e225e4bceb1baed5d0f21

    • \Program Files (x86)\LetsSee!\busshost.exe
      Filesize

      728KB

      MD5

      35a1aab90a4c06bec878a095f5a45379

      SHA1

      20709a1631774fd21f93dd710e1c398df5e7b5ed

      SHA256

      c8717078951bcfebf8d180765f26e2a994fd5545fd7f71ad9353dbf24f90d915

      SHA512

      d94445dc92c524a56732bb0ea54fa5d09998293b8e1be4f28183659e7839af27c88a700a753e043253eb627436339dddcf1f5560911e225e4bceb1baed5d0f21

    • \Program Files (x86)\LetsSee!\conf.exe
      Filesize

      1.0MB

      MD5

      8670880cc194c53fb33adcfec30b1af5

      SHA1

      23a8227a18d2227e760266ba5d8610c8b07e023c

      SHA256

      c28fe399970b309437febd959a7f8346899faa5a7d1d157b38169ef7e4091aa5

      SHA512

      2774c525ecfbfea709d3c4193d250dc2263bf6926a0acaeae012fa97b4b5be0f8ffce037367b4a43323b27c8d0cd966b17b795ab2dff2f59a650ce412259138c

    • \Users\Admin\AppData\Roaming\Microsoft\SystemCertificates\My\CTLs\7ZipArchiver\attachmentphoto.exe
      Filesize

      1.0MB

      MD5

      8670880cc194c53fb33adcfec30b1af5

      SHA1

      23a8227a18d2227e760266ba5d8610c8b07e023c

      SHA256

      c28fe399970b309437febd959a7f8346899faa5a7d1d157b38169ef7e4091aa5

      SHA512

      2774c525ecfbfea709d3c4193d250dc2263bf6926a0acaeae012fa97b4b5be0f8ffce037367b4a43323b27c8d0cd966b17b795ab2dff2f59a650ce412259138c

    • memory/268-84-0x0000000000000000-mapping.dmp
    • memory/340-85-0x0000000000000000-mapping.dmp
    • memory/932-112-0x0000000000400000-0x00000000004D7000-memory.dmp
      Filesize

      860KB

    • memory/932-74-0x0000000000400000-0x00000000004D7000-memory.dmp
      Filesize

      860KB

    • memory/932-57-0x0000000000000000-mapping.dmp
    • memory/932-72-0x0000000001CD0000-0x0000000001DD0000-memory.dmp
      Filesize

      1024KB

    • memory/932-109-0x0000000001CD0000-0x0000000001DD0000-memory.dmp
      Filesize

      1024KB

    • memory/936-101-0x0000000000A30000-0x0000000000A38000-memory.dmp
      Filesize

      32KB

    • memory/936-105-0x00000000022D0000-0x00000000022D8000-memory.dmp
      Filesize

      32KB

    • memory/936-60-0x0000000000000000-mapping.dmp
    • memory/936-71-0x0000000000BC0000-0x0000000000EC8000-memory.dmp
      Filesize

      3.0MB

    • memory/936-104-0x0000000000BB0000-0x0000000000BB8000-memory.dmp
      Filesize

      32KB

    • memory/936-103-0x0000000000A50000-0x0000000000A58000-memory.dmp
      Filesize

      32KB

    • memory/936-102-0x0000000000A40000-0x0000000000A48000-memory.dmp
      Filesize

      32KB

    • memory/936-100-0x0000000000A20000-0x0000000000A28000-memory.dmp
      Filesize

      32KB

    • memory/936-99-0x00000000009D0000-0x00000000009DE000-memory.dmp
      Filesize

      56KB

    • memory/936-91-0x0000000000470000-0x000000000047A000-memory.dmp
      Filesize

      40KB

    • memory/936-93-0x00000000051F0000-0x000000000564A000-memory.dmp
      Filesize

      4.4MB

    • memory/936-94-0x0000000000560000-0x0000000000570000-memory.dmp
      Filesize

      64KB

    • memory/936-95-0x0000000000570000-0x000000000057A000-memory.dmp
      Filesize

      40KB

    • memory/936-96-0x0000000000580000-0x000000000058A000-memory.dmp
      Filesize

      40KB

    • memory/936-97-0x00000000005A0000-0x00000000005AA000-memory.dmp
      Filesize

      40KB

    • memory/936-98-0x0000000000980000-0x0000000000988000-memory.dmp
      Filesize

      32KB

    • memory/1084-83-0x0000000000000000-mapping.dmp
    • memory/1088-106-0x0000000000000000-mapping.dmp
    • memory/1428-82-0x0000000000000000-mapping.dmp
    • memory/1432-86-0x0000000000000000-mapping.dmp
    • memory/1568-90-0x0000000000000000-mapping.dmp
    • memory/1632-68-0x0000000001D30000-0x0000000001DF8000-memory.dmp
      Filesize

      800KB

    • memory/1632-89-0x0000000000400000-0x0000000000526000-memory.dmp
      Filesize

      1.1MB

    • memory/1632-75-0x0000000000400000-0x0000000000526000-memory.dmp
      Filesize

      1.1MB

    • memory/1632-73-0x0000000001D30000-0x0000000001DC6000-memory.dmp
      Filesize

      600KB

    • memory/1632-64-0x0000000000000000-mapping.dmp
    • memory/1728-54-0x0000000075381000-0x0000000075383000-memory.dmp
      Filesize

      8KB

    • memory/1864-88-0x0000000000400000-0x0000000000526000-memory.dmp
      Filesize

      1.1MB

    • memory/1864-77-0x0000000000000000-mapping.dmp
    • memory/1864-79-0x0000000000530000-0x00000000005F8000-memory.dmp
      Filesize

      800KB

    • memory/1864-87-0x0000000000530000-0x00000000005C6000-memory.dmp
      Filesize

      600KB

    • memory/1864-114-0x0000000000400000-0x0000000000526000-memory.dmp
      Filesize

      1.1MB