Resubmissions

26-09-2021 14:45

210926-r4qb2aehcm 10

26-09-2021 14:41

210926-r2wq2afaa9 10

Analysis

  • max time kernel
    600s
  • max time network
    400s
  • platform
    windows10_x64
  • resource
    win10-de-20210920
  • submitted
    26-09-2021 14:45

General

  • Target

    c8c2f5565b13fbb60b89d11b7e71a03666c3afb2246b87e633cac8023bec0b24.exe

  • Size

    139KB

  • MD5

    3e201fc20a90e669990e2994d2114b83

  • SHA1

    24bfc9636c793e7ceb309b08e319b2d925a080bd

  • SHA256

    c8c2f5565b13fbb60b89d11b7e71a03666c3afb2246b87e633cac8023bec0b24

  • SHA512

    4dae9203c1003ca32600d153d7a9f08fa3c50d7c665ee81d4d7608d8f47354e48493d4bb39af2a3259c7882ca0ba38f4db52033b0df3ddf4321cb7118b228591

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://naghenrietti1.top/

http://kimballiett2.top/

http://xadriettany3.top/

http://jebeccallis4.top/

http://nityanneron5.top/

http://umayaniela6.top/

http://lynettaram7.top/

http://sadineyalas8.top/

http://geenaldencia9.top/

http://aradysiusep10.top/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

z0rm1onbuild

C2

45.156.21.209:56326

Extracted

Family

redline

Botnet

installszxc

C2

138.124.186.2:27999

Extracted

Family

raccoon

Botnet

f6d7183c9e82d2a9b81e6c0608450aa66cefb51f

Attributes
  • url4cnc

    https://t.me/justoprostohello

rc4.plain
rc4.plain

Extracted

Family

raccoon

Botnet

b2f2e53f9e27f901d453d8f6fbafe1b4d5266bb7

Attributes
  • url4cnc

    https://t.me/hcdrom1

rc4.plain
rc4.plain

Extracted

Family

raccoon

Botnet

5ff0ccb2bc00dc52d1ad09949e9c7663bc9ca4d4

Attributes
  • url4cnc

    https://t.me/agrybirdsgamerept

rc4.plain
rc4.plain

Signatures

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • RedLine

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

  • RedLine Payload 3 IoCs
  • Registers COM server for autorun 1 TTPs
  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • suricata: ET MALWARE Win32.Raccoon Stealer CnC Activity (dependency download)

    suricata: ET MALWARE Win32.Raccoon Stealer CnC Activity (dependency download)

  • suricata: ET MALWARE Win32.Raccoon Stealer Data Exfil Attempt

    suricata: ET MALWARE Win32.Raccoon Stealer Data Exfil Attempt

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 12 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

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

  • Deletes itself 1 IoCs
  • Loads dropped DLL 11 IoCs
  • 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.

  • Themida packer 5 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Accesses cryptocurrency files/wallets, 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.

  • Checks whether UAC is enabled 1 TTPs 2 IoCs
  • Drops file in System32 directory 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 2 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 6 IoCs

    SCSI 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.

  • Delays execution with timeout.exe 2 IoCs
  • Modifies data under HKEY_USERS 23 IoCs
  • Modifies registry class 47 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 56 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c8c2f5565b13fbb60b89d11b7e71a03666c3afb2246b87e633cac8023bec0b24.exe
    "C:\Users\Admin\AppData\Local\Temp\c8c2f5565b13fbb60b89d11b7e71a03666c3afb2246b87e633cac8023bec0b24.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3708
    • C:\Users\Admin\AppData\Local\Temp\c8c2f5565b13fbb60b89d11b7e71a03666c3afb2246b87e633cac8023bec0b24.exe
      "C:\Users\Admin\AppData\Local\Temp\c8c2f5565b13fbb60b89d11b7e71a03666c3afb2246b87e633cac8023bec0b24.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:3796
  • C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.170.0822.0002\FileSyncConfig.exe
    "C:\Users\Admin\AppData\Local\Microsoft\OneDrive\21.170.0822.0002\FileSyncConfig.exe"
    1⤵
    • Modifies registry class
    PID:1424
  • C:\Users\Admin\AppData\Local\Temp\F6DF.exe
    C:\Users\Admin\AppData\Local\Temp\F6DF.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:1296
  • C:\Users\Admin\AppData\Local\Temp\531A.exe
    C:\Users\Admin\AppData\Local\Temp\531A.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5048
    • C:\ProgramData\Stub.exe
      "C:\ProgramData\Stub.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:4548
  • C:\Users\Admin\AppData\Local\Temp\57CE.exe
    C:\Users\Admin\AppData\Local\Temp\57CE.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    PID:4996
  • C:\Users\Admin\AppData\Local\Temp\66D3.exe
    C:\Users\Admin\AppData\Local\Temp\66D3.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3668
    • C:\Users\Admin\AppData\Local\Temp\23Ny5bs1Ez.exe
      "C:\Users\Admin\AppData\Local\Temp\23Ny5bs1Ez.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3832
      • C:\Windows\SysWOW64\schtasks.exe
        /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\sihost.exe"
        3⤵
        • Creates scheduled task(s)
        PID:4336
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\66D3.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1976
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:3392
  • C:\Users\Admin\AppData\Local\Temp\9239.exe
    C:\Users\Admin\AppData\Local\Temp\9239.exe
    1⤵
    • Executes dropped EXE
    PID:3580
  • C:\Users\Admin\AppData\Local\Temp\BA82.exe
    C:\Users\Admin\AppData\Local\Temp\BA82.exe
    1⤵
    • Executes dropped EXE
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of AdjustPrivilegeToken
    PID:1372
  • C:\Users\Admin\AppData\Local\Temp\C60D.exe
    C:\Users\Admin\AppData\Local\Temp\C60D.exe
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1880
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\C60D.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4156
      • C:\Windows\SysWOW64\timeout.exe
        timeout /T 10 /NOBREAK
        3⤵
        • Delays execution with timeout.exe
        PID:2276
  • C:\Users\Admin\AppData\Roaming\Microsoft\Network\sihost.exe
    C:\Users\Admin\AppData\Roaming\Microsoft\Network\sihost.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of WriteProcessMemory
    PID:4176
    • C:\Windows\SysWOW64\schtasks.exe
      /C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\sihost.exe"
      2⤵
      • Creates scheduled task(s)
      PID:4820
  • C:\Users\Admin\AppData\Roaming\fbwbgde
    C:\Users\Admin\AppData\Roaming\fbwbgde
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4728
    • C:\Users\Admin\AppData\Roaming\fbwbgde
      C:\Users\Admin\AppData\Roaming\fbwbgde
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:1548
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeC2RClient.exe" /frequentupdate SCHEDULEDTASK displaylevel=False
    1⤵
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:4972

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1296-209-0x0000000001070000-0x0000000001071000-memory.dmp

    Filesize

    4KB

  • memory/1296-207-0x0000000077A20000-0x0000000077BAE000-memory.dmp

    Filesize

    1.6MB

  • memory/1296-216-0x0000000005390000-0x0000000005391000-memory.dmp

    Filesize

    4KB

  • memory/1372-194-0x0000000077A20000-0x0000000077BAE000-memory.dmp

    Filesize

    1.6MB

  • memory/1372-195-0x0000000000850000-0x0000000000851000-memory.dmp

    Filesize

    4KB

  • memory/1372-205-0x0000000005370000-0x0000000005371000-memory.dmp

    Filesize

    4KB

  • memory/1880-222-0x0000000000400000-0x00000000004F1000-memory.dmp

    Filesize

    964KB

  • memory/1880-221-0x00000000021F0000-0x0000000002280000-memory.dmp

    Filesize

    576KB

  • memory/2064-118-0x0000000000180000-0x0000000000196000-memory.dmp

    Filesize

    88KB

  • memory/2064-263-0x0000000000510000-0x0000000000526000-memory.dmp

    Filesize

    88KB

  • memory/3580-183-0x0000000001050000-0x00000000017E3000-memory.dmp

    Filesize

    7.6MB

  • memory/3580-180-0x00000000006C0000-0x00000000006C1000-memory.dmp

    Filesize

    4KB

  • memory/3580-171-0x0000000000560000-0x0000000000561000-memory.dmp

    Filesize

    4KB

  • memory/3580-175-0x0000000000680000-0x0000000000681000-memory.dmp

    Filesize

    4KB

  • memory/3580-181-0x00000000006D0000-0x00000000006D1000-memory.dmp

    Filesize

    4KB

  • memory/3580-178-0x00000000006A0000-0x00000000006A1000-memory.dmp

    Filesize

    4KB

  • memory/3580-179-0x00000000006B0000-0x00000000006B1000-memory.dmp

    Filesize

    4KB

  • memory/3668-154-0x0000000002170000-0x0000000002200000-memory.dmp

    Filesize

    576KB

  • memory/3668-155-0x0000000000400000-0x00000000004F1000-memory.dmp

    Filesize

    964KB

  • memory/3708-117-0x0000000000610000-0x0000000000619000-memory.dmp

    Filesize

    36KB

  • memory/3796-115-0x0000000000400000-0x0000000000409000-memory.dmp

    Filesize

    36KB

  • memory/3832-219-0x00000000004D0000-0x00000000004D4000-memory.dmp

    Filesize

    16KB

  • memory/3832-220-0x0000000000400000-0x00000000004B6000-memory.dmp

    Filesize

    728KB

  • memory/4176-256-0x00000000005B0000-0x00000000006FA000-memory.dmp

    Filesize

    1.3MB

  • memory/4176-257-0x0000000000400000-0x00000000004B6000-memory.dmp

    Filesize

    728KB

  • memory/4548-145-0x0000000004F20000-0x0000000004F21000-memory.dmp

    Filesize

    4KB

  • memory/4548-163-0x0000000007040000-0x0000000007041000-memory.dmp

    Filesize

    4KB

  • memory/4548-185-0x0000000006FB0000-0x0000000006FB1000-memory.dmp

    Filesize

    4KB

  • memory/4548-184-0x0000000006DD0000-0x0000000006DD1000-memory.dmp

    Filesize

    4KB

  • memory/4548-170-0x0000000006C20000-0x0000000006C21000-memory.dmp

    Filesize

    4KB

  • memory/4548-172-0x0000000006B90000-0x0000000006B91000-memory.dmp

    Filesize

    4KB

  • memory/4548-169-0x0000000007570000-0x0000000007571000-memory.dmp

    Filesize

    4KB

  • memory/4548-146-0x0000000004E20000-0x0000000005426000-memory.dmp

    Filesize

    6.0MB

  • memory/4548-164-0x0000000006880000-0x0000000006881000-memory.dmp

    Filesize

    4KB

  • memory/4548-147-0x0000000004F60000-0x0000000004F61000-memory.dmp

    Filesize

    4KB

  • memory/4548-162-0x0000000006940000-0x0000000006941000-memory.dmp

    Filesize

    4KB

  • memory/4548-160-0x0000000005F00000-0x0000000005F01000-memory.dmp

    Filesize

    4KB

  • memory/4548-217-0x00000000089D0000-0x00000000089D1000-memory.dmp

    Filesize

    4KB

  • memory/4548-140-0x00000000006B0000-0x00000000006B1000-memory.dmp

    Filesize

    4KB

  • memory/4548-142-0x0000000005430000-0x0000000005431000-memory.dmp

    Filesize

    4KB

  • memory/4548-143-0x0000000004EC0000-0x0000000004EC1000-memory.dmp

    Filesize

    4KB

  • memory/4548-144-0x0000000004FF0000-0x0000000004FF1000-memory.dmp

    Filesize

    4KB

  • memory/4996-151-0x00000000027F0000-0x00000000027F1000-memory.dmp

    Filesize

    4KB

  • memory/4996-134-0x000000001C710000-0x000000001C711000-memory.dmp

    Filesize

    4KB

  • memory/4996-152-0x000000001CCF0000-0x000000001CCF1000-memory.dmp

    Filesize

    4KB

  • memory/4996-153-0x000000001D3F0000-0x000000001D3F1000-memory.dmp

    Filesize

    4KB

  • memory/4996-156-0x000000001CEC0000-0x000000001CEC1000-memory.dmp

    Filesize

    4KB

  • memory/4996-157-0x000000001CB20000-0x000000001CB21000-memory.dmp

    Filesize

    4KB

  • memory/4996-158-0x0000000002890000-0x0000000002891000-memory.dmp

    Filesize

    4KB

  • memory/4996-138-0x00000000027B0000-0x00000000027B1000-memory.dmp

    Filesize

    4KB

  • memory/4996-137-0x0000000002750000-0x0000000002751000-memory.dmp

    Filesize

    4KB

  • memory/4996-188-0x000000001CBF0000-0x000000001CBF1000-memory.dmp

    Filesize

    4KB

  • memory/4996-159-0x000000001B502000-0x000000001B504000-memory.dmp

    Filesize

    8KB

  • memory/4996-165-0x000000001B504000-0x000000001B505000-memory.dmp

    Filesize

    4KB

  • memory/4996-133-0x0000000000F50000-0x0000000000F6E000-memory.dmp

    Filesize

    120KB

  • memory/4996-132-0x000000001B500000-0x000000001B502000-memory.dmp

    Filesize

    8KB

  • memory/4996-130-0x0000000000800000-0x0000000000801000-memory.dmp

    Filesize

    4KB

  • memory/5048-131-0x00000000050C0000-0x00000000050C1000-memory.dmp

    Filesize

    4KB

  • memory/5048-125-0x00000000008A0000-0x00000000008A1000-memory.dmp

    Filesize

    4KB