Analysis

  • max time kernel
    168s
  • max time network
    196s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    01-01-2024 19:54

General

  • Target

    3dbc477725b5a88f511f1b4e3bcc38fc.exe

  • Size

    1.0MB

  • MD5

    3dbc477725b5a88f511f1b4e3bcc38fc

  • SHA1

    a81ed8a5aed97fb6efa956e5c485f2aad8467e9f

  • SHA256

    8742189aa8e9303ed7ce67da39348d2bb6628a6c5243c6e9a968499098f42178

  • SHA512

    60de5350d98658ab152bd361e5a7fe6c5c3f294ced8067a8ea1a3e98004759723457a9e9e36a6cc01c5a35474ab4db06695111a0143972ffb0fdfe55c97da517

  • SSDEEP

    12288:CGj/sthsNaJ31H2FTQi66ulHOG8BmRSdss/K0Iwxz0GAoSKv4wvx0mwTiEH8vPNG:9othaFMiA78BTQRGLgw0XTiEHwm

Malware Config

Extracted

Family

blustealer

Credentials

  • Protocol:
    smtp
  • Host:
    mail.yekamuhendislik.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    MuhasebE123*

Signatures

  • A310logger

    A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.

  • BluStealer

    A Modular information stealer written in Visual Basic.

  • A310logger Executable 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3dbc477725b5a88f511f1b4e3bcc38fc.exe
    "C:\Users\Admin\AppData\Local\Temp\3dbc477725b5a88f511f1b4e3bcc38fc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2940
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\VqTEFYQXsiQibk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6C89.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1992
    • C:\Users\Admin\AppData\Local\Temp\3dbc477725b5a88f511f1b4e3bcc38fc.exe
      "C:\Users\Admin\AppData\Local\Temp\3dbc477725b5a88f511f1b4e3bcc38fc.exe"
      2⤵
      • Loads dropped DLL
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1260
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
        C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe
        3⤵
        • Executes dropped EXE
        • Accesses Microsoft Outlook profiles
        • outlook_office_path
        • outlook_win_path
        PID:2296

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmp6C89.tmp

    Filesize

    1KB

    MD5

    0933d1632c9aac5fa564ded3531c0a44

    SHA1

    c524ab38393d0fb301221ca614ed8c39bb4787c7

    SHA256

    ac3172cd001a2b4454bec49897e03780b4435830f24bf70181fbc64f66294b0f

    SHA512

    739cc907ad5ea3da8607c5d6972a2cc3120b819a8a95b098868aa6e6c5262bfdfbb5576e9ea19085197d0cc332473094f318e2c7386584fadd48084439c76cad

  • C:\Users\Admin\AppData\Roaming\MICROS~1\Windows\TEMPLA~1\M1NQFH~1.ZIP

    Filesize

    285KB

    MD5

    40a9752d59f2883e40d928f85a749008

    SHA1

    c60fb58eff64a7969b46f3934766f991352eeb47

    SHA256

    ef95540ec8dae3d255439fb847d26397c265b5cccda5ed0d6b9ed3dda14a2820

    SHA512

    ce33985f91103315accb1039635488d7e144df264bab8e164c1f9844ce6923e1c9c76349f14542901887ffcbbbca40b92cf474126f0b94893e8af1f608464b3c

  • \Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe

    Filesize

    689KB

    MD5

    91b41651e6e9ab352805c6d35a297d08

    SHA1

    11b8eaa7b7941461bc952b11ec3f07d25dcd1c2e

    SHA256

    0872abe29cc9231cdded3a44e02a7ea17f09cf2ac2bdbd7077065858829c3723

    SHA512

    b0b0d73f6ac7b6e9b39db0fa58931873143f6559c3b8d3db2d82d453045f75da94f3236b6c6c5200b52af6cacc038565eb2e9c6a834608dac0b0e8bb45b1e892

  • memory/1260-21-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/1260-60-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/1260-14-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/1260-13-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/1260-15-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/1260-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/1260-19-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/2296-55-0x0000000000AB0000-0x0000000000B62000-memory.dmp

    Filesize

    712KB

  • memory/2296-59-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

    Filesize

    9.9MB

  • memory/2296-57-0x000000001B210000-0x000000001B290000-memory.dmp

    Filesize

    512KB

  • memory/2296-56-0x000007FEF5620000-0x000007FEF600C000-memory.dmp

    Filesize

    9.9MB

  • memory/2940-3-0x0000000000440000-0x0000000000458000-memory.dmp

    Filesize

    96KB

  • memory/2940-1-0x00000000744D0000-0x0000000074BBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2940-2-0x0000000005000000-0x0000000005040000-memory.dmp

    Filesize

    256KB

  • memory/2940-0-0x0000000001150000-0x000000000125E000-memory.dmp

    Filesize

    1.1MB

  • memory/2940-22-0x00000000744D0000-0x0000000074BBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2940-4-0x00000000744D0000-0x0000000074BBE000-memory.dmp

    Filesize

    6.9MB

  • memory/2940-7-0x0000000005390000-0x00000000053F6000-memory.dmp

    Filesize

    408KB

  • memory/2940-6-0x00000000058E0000-0x00000000059B4000-memory.dmp

    Filesize

    848KB

  • memory/2940-5-0x0000000005000000-0x0000000005040000-memory.dmp

    Filesize

    256KB