Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    28-04-2024 20:01

General

  • Target

    335d1a8ce4b55544720e2f5b6e9a9f3b5e09dc442986b37f8762f90de27568d0.exe

  • Size

    1.5MB

  • MD5

    f7af8d38a00fcd947d8027ef7f0a390c

  • SHA1

    a9ab160a680710288decd7ff7c7883e2edd87c95

  • SHA256

    335d1a8ce4b55544720e2f5b6e9a9f3b5e09dc442986b37f8762f90de27568d0

  • SHA512

    85fc5791ec734632a81e090447581068796ede9e05b3dc7a5c476aaf99f78e2ea8cdb3de4dd0dbb7bb516516654abbd2f81999724a9e3015d634421baca436c3

  • SSDEEP

    24576:bH9+it8wHVOzjbbt/KQdsRRsv07zhq2O0aXpivCD7VopgVC7I7EEFcxNh:joiVHAzjbZjsR5FoXpSCD7Igcx3

Malware Config

Signatures

  • Detects executables containing possible sandbox analysis VM usernames 1 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 2 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.

  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 12 IoCs
  • Drops file in Program Files directory 18 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\335d1a8ce4b55544720e2f5b6e9a9f3b5e09dc442986b37f8762f90de27568d0.exe
    "C:\Users\Admin\AppData\Local\Temp\335d1a8ce4b55544720e2f5b6e9a9f3b5e09dc442986b37f8762f90de27568d0.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1980
    • C:\Users\Admin\AppData\Local\Temp\335d1a8ce4b55544720e2f5b6e9a9f3b5e09dc442986b37f8762f90de27568d0.exe
      "C:\Users\Admin\AppData\Local\Temp\335d1a8ce4b55544720e2f5b6e9a9f3b5e09dc442986b37f8762f90de27568d0.exe"
      2⤵
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2608
      • C:\Users\Admin\AppData\Local\Temp\335d1a8ce4b55544720e2f5b6e9a9f3b5e09dc442986b37f8762f90de27568d0.exe
        "C:\Users\Admin\AppData\Local\Temp\335d1a8ce4b55544720e2f5b6e9a9f3b5e09dc442986b37f8762f90de27568d0.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4736
    • C:\Users\Admin\AppData\Local\Temp\335d1a8ce4b55544720e2f5b6e9a9f3b5e09dc442986b37f8762f90de27568d0.exe
      "C:\Users\Admin\AppData\Local\Temp\335d1a8ce4b55544720e2f5b6e9a9f3b5e09dc442986b37f8762f90de27568d0.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:1860

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\chinese sperm sperm [bangbus] (Ashley,Sonja).mpeg.exe
    Filesize

    1.0MB

    MD5

    a3ecb8391adbf98a127eb03168fe5e52

    SHA1

    9965116ad6a5715b8282e305104a2033a3cb922a

    SHA256

    21a0c631724cd289d5856bf8d3ef1ad73673939bcf152212998557c6240babb8

    SHA512

    8ef6f02bc4b7b40a1c5984b124c76845a4b168a33e71032234361071be7095f73a758e4b2bba33cab4057ab38db0c51f3da473b73b8daaa4ef22f7cfe11e99b2

  • memory/1860-155-0x0000000000400000-0x0000000000429000-memory.dmp
    Filesize

    164KB

  • memory/1980-0-0x0000000000400000-0x0000000000429000-memory.dmp
    Filesize

    164KB

  • memory/2608-45-0x0000000000400000-0x0000000000429000-memory.dmp
    Filesize

    164KB

  • memory/4736-154-0x0000000000400000-0x0000000000429000-memory.dmp
    Filesize

    164KB