Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows7_x64
  • resource
    win7-en-20211104
  • submitted
    26-11-2021 12:30

General

  • Target

    remittance advice_001001098.exe

  • Size

    331KB

  • MD5

    7877a7074c688baf439f7ec1ab150682

  • SHA1

    6c2539fb927b57388866f1c072cdf681b585fb2a

  • SHA256

    08ade6bd3efcd20c80defdde936ef1329713af42d28889ffb69ba26b321a297f

  • SHA512

    6e5dff775fe478634fc3553b0bed3e9e9fda7a956cc17743f2b1b27e06256008ba7bc229d55a409cb710f078c97b70bb709c764b9fc144c0700d77dab6f83402

Malware Config

Extracted

Family

xloader

Version

2.5

Campaign

e8ia

C2

http://www.helpfromjames.com/e8ia/

Decoy

le-hameau-enchanteur.com

quantumsystem-au.club

engravedeeply.com

yesrecompensas.lat

cavallitowerofficials.com

800seaspray.com

skifun-jetski.com

thouartafoot.com

nft2dollar.com

petrestore.online

cjcutthecord2.com

tippimccullough.com

gadget198.xyz

djmiriam.com

bitbasepay.com

cukierniawz.com

mcclureic.xyz

inthekitchenshakinandbakin.com

busy-clicks.com

melaniemorris.online

Signatures

  • Xloader

    Xloader is a rebranded version of Formbook malware.

  • suricata: ET MALWARE FormBook CnC Checkin (GET)

    suricata: ET MALWARE FormBook CnC Checkin (GET)

  • Xloader Payload 3 IoCs
  • Blocklisted process makes network request 1 IoCs
  • Deletes itself 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Suspicious use of SetThreadContext 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:1380
    • C:\Users\Admin\AppData\Local\Temp\remittance advice_001001098.exe
      "C:\Users\Admin\AppData\Local\Temp\remittance advice_001001098.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:592
      • C:\Users\Admin\AppData\Local\Temp\remittance advice_001001098.exe
        "C:\Users\Admin\AppData\Local\Temp\remittance advice_001001098.exe"
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of AdjustPrivilegeToken
        PID:568
    • C:\Windows\SysWOW64\wscript.exe
      "C:\Windows\SysWOW64\wscript.exe"
      2⤵
      • Blocklisted process makes network request
      • Suspicious use of SetThreadContext
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:552
      • C:\Windows\SysWOW64\cmd.exe
        /c del "C:\Users\Admin\AppData\Local\Temp\remittance advice_001001098.exe"
        3⤵
        • Deletes itself
        PID:700

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

System Information Discovery

1
T1082

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\nsnAA92.tmp\tngylslz.dll
    MD5

    5dce4ab196ebed51421a281746048281

    SHA1

    372e20701622727ca50c39feeccb53d5c26102ff

    SHA256

    ccc17ccc0b0f0f45309c8dbff3671f9a1d178e5cf22e47174f8da054f71e1edd

    SHA512

    a03f9bbb52c755ef73fd2ed425454f1d47432d3e59937324761f3817be21d719c7a8b947d315fccbf7e197c081beb9cafe727952606634ba31ee1c07c59ae30e

  • memory/552-63-0x0000000000000000-mapping.dmp
  • memory/552-68-0x00000000004D0000-0x0000000000560000-memory.dmp
    Filesize

    576KB

  • memory/552-67-0x0000000002170000-0x0000000002473000-memory.dmp
    Filesize

    3.0MB

  • memory/552-65-0x0000000000070000-0x0000000000099000-memory.dmp
    Filesize

    164KB

  • memory/552-64-0x0000000000890000-0x00000000008B6000-memory.dmp
    Filesize

    152KB

  • memory/568-58-0x000000000041D4D0-mapping.dmp
  • memory/568-61-0x00000000002D0000-0x00000000002E1000-memory.dmp
    Filesize

    68KB

  • memory/568-59-0x0000000000930000-0x0000000000C33000-memory.dmp
    Filesize

    3.0MB

  • memory/568-57-0x0000000000400000-0x0000000000429000-memory.dmp
    Filesize

    164KB

  • memory/592-55-0x0000000075981000-0x0000000075983000-memory.dmp
    Filesize

    8KB

  • memory/700-66-0x0000000000000000-mapping.dmp
  • memory/1380-62-0x0000000007010000-0x00000000071B5000-memory.dmp
    Filesize

    1.6MB

  • memory/1380-69-0x0000000006E20000-0x0000000006F62000-memory.dmp
    Filesize

    1.3MB