Analysis

  • max time kernel
    159s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-11-2022 08:03

General

  • Target

    acd5a88aa43ce33d08853a5886d331b4e36ff1d648687e99d1821ad12a09f07c.exe

  • Size

    461KB

  • MD5

    e8a7b348b9f51d443b78c154b08f5aa7

  • SHA1

    62c07682de518a773a7d10f083c90012a3e3a2fa

  • SHA256

    acd5a88aa43ce33d08853a5886d331b4e36ff1d648687e99d1821ad12a09f07c

  • SHA512

    f56b8382fa95b7be3af8799b019c9fec8370ee3640f2437d9567dce01dde6033a15385f1eb26b9586e5d447bd1d09429cf9e60b3013f68059f787f3888065701

  • SSDEEP

    12288:GzFy3iABA9kWmfgvOYaMeMMz8H1YcTndt:683iABDIOYkvo1YOz

Malware Config

Signatures

  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
  • UAC bypass 3 TTPs 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Adds Run key to start application 2 TTPs 5 IoCs
  • Drops file in System32 directory 5 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\acd5a88aa43ce33d08853a5886d331b4e36ff1d648687e99d1821ad12a09f07c.exe
    "C:\Users\Admin\AppData\Local\Temp\acd5a88aa43ce33d08853a5886d331b4e36ff1d648687e99d1821ad12a09f07c.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1168
    • C:\Users\Admin\ksoIgcEg\LaEcUQgM.exe
      "C:\Users\Admin\ksoIgcEg\LaEcUQgM.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Adds Run key to start application
      • Drops file in System32 directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of FindShellTrayWindow
      PID:4620
    • C:\ProgramData\wiUYsIsk\nKIAAQwo.exe
      "C:\ProgramData\wiUYsIsk\nKIAAQwo.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      PID:4856
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\Bginfo.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4236
      • C:\Users\Admin\AppData\Local\Temp\Bginfo.exe
        C:\Users\Admin\AppData\Local\Temp\Bginfo.exe
        3⤵
        • Executes dropped EXE
        PID:4244
    • C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v HideFileExt /t REG_DWORD /d 1
      2⤵
      • Modifies visibility of file extensions in Explorer
      • Modifies registry key
      PID:3276
    • C:\Windows\SysWOW64\reg.exe
      reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v Hidden /t REG_DWORD /d 2
      2⤵
      • Modifies registry key
      PID:4304
    • C:\Windows\SysWOW64\reg.exe
      reg add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /d 0 /t REG_DWORD /f
      2⤵
      • UAC bypass
      • Modifies registry key
      PID:1584
  • C:\ProgramData\LaYgwgEY\SiIwUEUs.exe
    C:\ProgramData\LaYgwgEY\SiIwUEUs.exe
    1⤵
    • Executes dropped EXE
    • Adds Run key to start application
    • Drops file in System32 directory
    PID:1212

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Hidden Files and Directories

1
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Hidden Files and Directories

1
T1158

Modify Registry

4
T1112

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\LaYgwgEY\SiIwUEUs.exe
    Filesize

    430KB

    MD5

    4fd4bfa512163551bb5042357564d16e

    SHA1

    1c5d7d99d4ed2a4f3a071c47f0b40880e3005675

    SHA256

    ca8e23981790e2bab1283cc0919a42b30875d71b71c9c16387ddd8e74f061866

    SHA512

    921161f5a30d5b92b93aca7deef261ff913bfbb1c3b6a19565e8fdfe9bbcd23b15ddf079cb0aa4f0221631efd3c7adf91af3ffb92edc18824de1d84cf1cda1d8

  • C:\ProgramData\LaYgwgEY\SiIwUEUs.exe
    Filesize

    430KB

    MD5

    4fd4bfa512163551bb5042357564d16e

    SHA1

    1c5d7d99d4ed2a4f3a071c47f0b40880e3005675

    SHA256

    ca8e23981790e2bab1283cc0919a42b30875d71b71c9c16387ddd8e74f061866

    SHA512

    921161f5a30d5b92b93aca7deef261ff913bfbb1c3b6a19565e8fdfe9bbcd23b15ddf079cb0aa4f0221631efd3c7adf91af3ffb92edc18824de1d84cf1cda1d8

  • C:\ProgramData\wiUYsIsk\nKIAAQwo.exe
    Filesize

    435KB

    MD5

    4ad430e97681c1d35d47350dd188398e

    SHA1

    6e97e6c978899a9fb4384d0edca7a19f8a08aa23

    SHA256

    fa107a04cb5b864ff5d1f060289013dd38122a61dd778ba70dcf666b10654102

    SHA512

    8d886e7ce4a914cafb90fbedc5c727c1bc68bc3078d2016ab28c98d84edae786aa41559c35a244c1e0a021459749670de938df5acf670b26e5e9579654631e1b

  • C:\ProgramData\wiUYsIsk\nKIAAQwo.exe
    Filesize

    435KB

    MD5

    4ad430e97681c1d35d47350dd188398e

    SHA1

    6e97e6c978899a9fb4384d0edca7a19f8a08aa23

    SHA256

    fa107a04cb5b864ff5d1f060289013dd38122a61dd778ba70dcf666b10654102

    SHA512

    8d886e7ce4a914cafb90fbedc5c727c1bc68bc3078d2016ab28c98d84edae786aa41559c35a244c1e0a021459749670de938df5acf670b26e5e9579654631e1b

  • C:\Users\Admin\AppData\Local\Temp\Bginfo.exe
    Filesize

    24KB

    MD5

    3a27fd258bb0e1818d7e3fce30e44e3e

    SHA1

    e95ea3176bbae09447a2ecc153b1b0bb0fd45a29

    SHA256

    7aa24d2941eccdc947aad16abf37a70178be453e059799347dae9366cbddda83

    SHA512

    4ade674030d0dad9d8b3effc73b168322733a159e3e559790b1ab80a8afcd146d94cb298c7aaa67b2bdfa92a1bad4ae46d9da178ab93fc0af94102e1265b5463

  • C:\Users\Admin\AppData\Local\Temp\Bginfo.exe
    Filesize

    24KB

    MD5

    3a27fd258bb0e1818d7e3fce30e44e3e

    SHA1

    e95ea3176bbae09447a2ecc153b1b0bb0fd45a29

    SHA256

    7aa24d2941eccdc947aad16abf37a70178be453e059799347dae9366cbddda83

    SHA512

    4ade674030d0dad9d8b3effc73b168322733a159e3e559790b1ab80a8afcd146d94cb298c7aaa67b2bdfa92a1bad4ae46d9da178ab93fc0af94102e1265b5463

  • C:\Users\Admin\ksoIgcEg\LaEcUQgM.exe
    Filesize

    431KB

    MD5

    99016928a798bff5bb7863389a6024f4

    SHA1

    6c47f19416170ea2561ddbedd656338ee6fbf586

    SHA256

    e8a4dec18351680cd5474f458db08773a7b8670d3ad8346b813ad0348640c900

    SHA512

    3ec09b368be1aaf2aaa07be75f1b061da62c092c65d9285b1ed0dfcf78b60815921756c78bbc753a82a966d3f0658d4f9b9da9bd6463fd1efc6082cffc863c2a

  • C:\Users\Admin\ksoIgcEg\LaEcUQgM.exe
    Filesize

    431KB

    MD5

    99016928a798bff5bb7863389a6024f4

    SHA1

    6c47f19416170ea2561ddbedd656338ee6fbf586

    SHA256

    e8a4dec18351680cd5474f458db08773a7b8670d3ad8346b813ad0348640c900

    SHA512

    3ec09b368be1aaf2aaa07be75f1b061da62c092c65d9285b1ed0dfcf78b60815921756c78bbc753a82a966d3f0658d4f9b9da9bd6463fd1efc6082cffc863c2a

  • memory/1168-132-0x0000000000400000-0x0000000000477000-memory.dmp
    Filesize

    476KB

  • memory/1168-157-0x0000000000400000-0x0000000000477000-memory.dmp
    Filesize

    476KB

  • memory/1168-153-0x0000000000400000-0x0000000000477000-memory.dmp
    Filesize

    476KB

  • memory/1212-143-0x0000000000400000-0x000000000046E000-memory.dmp
    Filesize

    440KB

  • memory/1584-147-0x0000000000000000-mapping.dmp
  • memory/3276-145-0x0000000000000000-mapping.dmp
  • memory/4236-144-0x0000000000000000-mapping.dmp
  • memory/4244-152-0x00007FFBC8BD0000-0x00007FFBC9691000-memory.dmp
    Filesize

    10.8MB

  • memory/4244-148-0x0000000000000000-mapping.dmp
  • memory/4244-156-0x00007FFBC8BD0000-0x00007FFBC9691000-memory.dmp
    Filesize

    10.8MB

  • memory/4244-151-0x0000000000110000-0x000000000011C000-memory.dmp
    Filesize

    48KB

  • memory/4304-146-0x0000000000000000-mapping.dmp
  • memory/4620-136-0x0000000000400000-0x000000000046F000-memory.dmp
    Filesize

    444KB

  • memory/4620-154-0x0000000000400000-0x000000000046F000-memory.dmp
    Filesize

    444KB

  • memory/4620-133-0x0000000000000000-mapping.dmp
  • memory/4856-140-0x0000000000400000-0x0000000000470000-memory.dmp
    Filesize

    448KB

  • memory/4856-155-0x0000000000400000-0x0000000000470000-memory.dmp
    Filesize

    448KB

  • memory/4856-137-0x0000000000000000-mapping.dmp