Analysis

  • max time kernel
    153s
  • max time network
    197s
  • platform
    windows7_x64
  • resource
    win7v20210408
  • submitted
    16-08-2021 09:02

General

  • Target

    d86d71d53b351a9d3c585b7e8b24d525.exe

  • Size

    180KB

  • MD5

    d86d71d53b351a9d3c585b7e8b24d525

  • SHA1

    590a404f7a297f97a8bf78f072a152c7ebdea277

  • SHA256

    eaa52f460d64093ebcf267e2fa4ebe342b31ee442127afe065892b790409eb33

  • SHA512

    d52dad0397efd9c9973b754d63e710ce04916672acfb4e25f492d597aed944c287744804eec4b267665aea023ac4cd3f9e928a1800fed9db1af9f5681d971a97

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.

  • RedLine Payload 2 IoCs
  • 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 3 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
  • Themida packer 3 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 3 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 25 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d86d71d53b351a9d3c585b7e8b24d525.exe
    "C:\Users\Admin\AppData\Local\Temp\d86d71d53b351a9d3c585b7e8b24d525.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1248
    • C:\Users\Admin\AppData\Local\Temp\d86d71d53b351a9d3c585b7e8b24d525.exe
      "C:\Users\Admin\AppData\Local\Temp\d86d71d53b351a9d3c585b7e8b24d525.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1728
  • C:\Users\Admin\AppData\Local\Temp\3D7D.exe
    C:\Users\Admin\AppData\Local\Temp\3D7D.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetWindowsHookEx
    PID:1800
  • C:\Users\Admin\AppData\Local\Temp\4700.exe
    C:\Users\Admin\AppData\Local\Temp\4700.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:1676
  • C:\Users\Admin\AppData\Local\Temp\4E9F.exe
    C:\Users\Admin\AppData\Local\Temp\4E9F.exe
    1⤵
    • Executes dropped EXE
    PID:1008

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:\Users\Admin\AppData\Local\Temp\3D7D.exe
    MD5

    a69e12607d01237460808fa1709e5e86

    SHA1

    4a12f82aee1c90e70cdf6be863ce1a749c8ae411

    SHA256

    188e05efb42c1f7fdb5c910a6614f710a87ae642b23ac9ffe3f75246744865bc

    SHA512

    7533e6da6bac0405fc8b608da8020b54b6ee02592e6fd40ea342e130a8a876ae5ef4a1fd636d95e76339dbf8be45cecbd22ca2d0a4635b055ffafec3d7e15284

  • C:\Users\Admin\AppData\Local\Temp\4700.exe
    MD5

    1e0e17859c0a32b53ae0bafc4e55563b

    SHA1

    590ef228cac03f6da4bdbc1b7e40557d61a3a043

    SHA256

    76d03b8781c66aa25d74ec788dc9c1370ee01000926882c8be7f89f5dcb01d31

    SHA512

    4494ad485fb73538b3e6f5e8e94a073bdddaf6ac50877051078646828c80b71a1e50a09d0ce84f65b021cc1bb0b4d22f317c2eef0dc29513ee927a9c8e7cdf72

  • C:\Users\Admin\AppData\Local\Temp\4E9F.exe
    MD5

    59c690680f9f34cb23d2c3353f8205ea

    SHA1

    1bc6a815d43eec601454dfb720c80ca046e9a125

    SHA256

    d6d47982016b513dfa7da883e9be374f0663fef49a7858195e88a4fa14e4086c

    SHA512

    aa4c0be25b1a49c34acddb23a4421aad3a963abf3b4bfe825aa8c8db90d952e675609f6b16392b8b482eac13c1dbe1e2c9ae16d4eef4d35fcf97e882291f12e3

  • memory/1008-74-0x0000000000000000-mapping.dmp
  • memory/1192-64-0x0000000002B50000-0x0000000002B66000-memory.dmp
    Filesize

    88KB

  • memory/1248-63-0x00000000001C0000-0x00000000001CA000-memory.dmp
    Filesize

    40KB

  • memory/1676-69-0x0000000000000000-mapping.dmp
  • memory/1676-72-0x00000000013D0000-0x00000000013D1000-memory.dmp
    Filesize

    4KB

  • memory/1728-62-0x00000000769B1000-0x00000000769B3000-memory.dmp
    Filesize

    8KB

  • memory/1728-61-0x0000000000402E1A-mapping.dmp
  • memory/1728-60-0x0000000000400000-0x0000000000409000-memory.dmp
    Filesize

    36KB

  • memory/1800-65-0x0000000000000000-mapping.dmp