Overview

overview

10

Static

static

3

stubdownloader.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    298s
  • max time network
    301s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-05-2023 21:19

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General

  • Target

    stubdownloader.exe

  • Size

    230KB

  • MD5

    9f78ddf0b80e9d3b735f34c82df45df8

  • SHA1

    35412bcc3b08c31baffdaba2aa96a7efea288fa4

  • SHA256

    9655ba431831bd59240b44ce2958a0aa20404078da93486cea0b9ce53753a38d

  • SHA512

    ae4f08c42c768e7022ea23fbc82abac5412a0dba047f2906c57a8cce8e666ccf6e65007ff1e923a8022e0af3d0070989130b5708ab05d83cae39f72994aa3d5d

  • SSDEEP

    3072:KUcvuJEXStOjA7BpQC2mCLsTRozN4rMtH02BhAAH7TNd3XxfyEAg0FujouL1Vwso:omjtOEKKo0MtUEjwEAO3wHes

Score
10/10
bitratpersistencetrojan

Malware Config

Extracted

Family

bitrat

Version

1.38

C2

soon-lp.at.ply.gg:17209

Attributes
  • communication_password

    81dc9bdb52d04dc20036dbd8313ed055

  • install_dir

    C:\ProgramData

  • install_file

    Bit

  • tor_process

    tor

Signatures

  • BitRAT

    BitRAT is a remote access tool written in C++ and uses leaked source code from other families.

    trojanbitrat
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\stubdownloader.exe
    "C:\Users\Admin\AppData\Local\Temp\stubdownloader.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3820
    • C:\Users\Admin\AppData\Local\Temp\JOW3eA2v36fRrIZ9.exe
      "C:\Users\Admin\AppData\Local\Temp\JOW3eA2v36fRrIZ9.exe"
      2⤵
      • Executes dropped EXE
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2996

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\JOW3eA2v36fRrIZ9.exe
    Filesize

    3.8MB

    MD5

    8ee8f36cfddbb4aeb1388191cfca4e90

    SHA1

    742516898c7ba788f889c2a3438a37a354524577

    SHA256

    a1d460867b08cc04ecf499c53f72acd1ac2ae4a0d28ea72bdc2b7a8a0a99b704

    SHA512

    d84fdac4f0afb9e3e2eb13a14f4753e992ebadc00f1ad87bcf44a7fb41e38b282db7280d8fa9d9c829ce3a314688ca013566d57c3d3ec51c4a3f068e7e65c5b6

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\JOW3eA2v36fRrIZ9.exe
    Filesize

    3.8MB

    MD5

    8ee8f36cfddbb4aeb1388191cfca4e90

    SHA1

    742516898c7ba788f889c2a3438a37a354524577

    SHA256

    a1d460867b08cc04ecf499c53f72acd1ac2ae4a0d28ea72bdc2b7a8a0a99b704

    SHA512

    d84fdac4f0afb9e3e2eb13a14f4753e992ebadc00f1ad87bcf44a7fb41e38b282db7280d8fa9d9c829ce3a314688ca013566d57c3d3ec51c4a3f068e7e65c5b6

    Download Submit
  • C:\Users\Admin\AppData\Local\Temp\JOW3eA2v36fRrIZ9.exe
    Filesize

    3.8MB

    MD5

    8ee8f36cfddbb4aeb1388191cfca4e90

    SHA1

    742516898c7ba788f889c2a3438a37a354524577

    SHA256

    a1d460867b08cc04ecf499c53f72acd1ac2ae4a0d28ea72bdc2b7a8a0a99b704

    SHA512

    d84fdac4f0afb9e3e2eb13a14f4753e992ebadc00f1ad87bcf44a7fb41e38b282db7280d8fa9d9c829ce3a314688ca013566d57c3d3ec51c4a3f068e7e65c5b6

    Download Submit
  • memory/2996-152-0x0000000000400000-0x00000000007CE000-memory.dmp
    Filesize

    3.8MB

    Download
  • memory/2996-153-0x0000000074240000-0x0000000074279000-memory.dmp
    Filesize

    228KB

    Download
  • memory/2996-154-0x0000000073F00000-0x0000000073F39000-memory.dmp
    Filesize

    228KB

    Download
  • memory/2996-155-0x0000000074240000-0x0000000074279000-memory.dmp
    Filesize

    228KB

    Download
  • memory/2996-156-0x0000000073F00000-0x0000000073F39000-memory.dmp
    Filesize

    228KB

    Download
  • memory/2996-157-0x0000000072E20000-0x0000000072E59000-memory.dmp
    Filesize

    228KB

    Download
  • memory/2996-158-0x0000000072E20000-0x0000000072E59000-memory.dmp
    Filesize

    228KB

    Download
  • memory/2996-159-0x0000000072E20000-0x0000000072E59000-memory.dmp
    Filesize

    228KB

    Download