Analysis

  • max time kernel
    149s
  • max time network
    117s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    11-03-2021 04:43

General

  • Target

    SecuriteInfo.com.W32.AIDetect.malware1.8119.17745.exe

  • Size

    301KB

  • MD5

    4945a14049174b18fc91e04b65dc0dd5

  • SHA1

    28086f5cc0b9f97014575dac95b9de5065977a83

  • SHA256

    ea8588de894d9657daa047958ca98c5e9549ca25bc09e9df2a9c8ae044daef42

  • SHA512

    10e478b6f5d6eb81713f92d8c25a4ee517bd5d37e5962bc16d7b9be652770d844ce537777ec0d023e83069f2de43195cfd08ca1992853d1f7bc6bb35ece3656f

Malware Config

Extracted

Family

smokeloader

Version

2019

C2

http://10022020newfolder1002002131-service1002.space/

http://10022020newfolder1002002231-service1002.space/

http://10022020newfolder3100231-service1002.space/

http://10022020newfolder1002002431-service1002.space/

http://10022020newfolder1002002531-service1002.space/

http://10022020newfolder33417-01242510022020.space/

http://10022020test125831-service1002012510022020.space/

http://10022020test136831-service1002012510022020.space/

http://10022020test147831-service1002012510022020.space/

http://10022020test146831-service1002012510022020.space/

http://10022020test134831-service1002012510022020.space/

http://10022020est213531-service100201242510022020.ru/

http://10022020yes1t3481-service1002012510022020.ru/

http://10022020test13561-service1002012510022020.su/

http://10022020test14781-service1002012510022020.info/

http://10022020test13461-service1002012510022020.net/

http://10022020test15671-service1002012510022020.tech/

http://10022020test12671-service1002012510022020.online/

http://10022020utest1341-service1002012510022020.ru/

http://10022020uest71-service100201dom2510022020.ru/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Modifies Installed Components in the registry 2 TTPs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 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.

  • Modifies registry class 5 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of FindShellTrayWindow 29 IoCs
  • Suspicious use of SendNotifyMessage 30 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetect.malware1.8119.17745.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetect.malware1.8119.17745.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1752
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetect.malware1.8119.17745.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetect.malware1.8119.17745.exe"
      2⤵
      • Loads dropped DLL
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1812
  • C:\Windows\explorer.exe
    explorer.exe
    1⤵
    • Modifies registry class
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    PID:1572

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\4DD3.tmp
    MD5

    d124f55b9393c976963407dff51ffa79

    SHA1

    2c7bbedd79791bfb866898c85b504186db610b5d

    SHA256

    ea1e16247c848c8c171c4cd1fa17bc5a018a1fcb0c0dac25009066b6667b8eef

    SHA512

    278fe3a4b1fbbe700e4f4483b610133e975e36e101455661d5197bd892a68839b9d555499040d200c92aefa9e3819380e395c0cd85d5fc845c6364d128a8cf06

  • memory/1200-9-0x0000000003AC0000-0x0000000003AD7000-memory.dmp
    Filesize

    92KB

  • memory/1572-10-0x000007FEFB8E1000-0x000007FEFB8E3000-memory.dmp
    Filesize

    8KB

  • memory/1572-11-0x0000000003FC0000-0x0000000003FC1000-memory.dmp
    Filesize

    4KB

  • memory/1752-2-0x0000000002C90000-0x0000000002CA1000-memory.dmp
    Filesize

    68KB

  • memory/1752-6-0x0000000000020000-0x000000000002D000-memory.dmp
    Filesize

    52KB

  • memory/1812-4-0x0000000000402A38-mapping.dmp
  • memory/1812-3-0x0000000000400000-0x000000000040C000-memory.dmp
    Filesize

    48KB

  • memory/1812-5-0x0000000075EB1000-0x0000000075EB3000-memory.dmp
    Filesize

    8KB