Overview

overview

10

Static

static

10

b923f25375...fd.exe

windows7-x64

10

b923f25375...fd.exe

windows10-2004-x64

10

Sharing

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General

  • Target
    b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd
  • Size 539KB
  • Sample240527-ceernscc5z
  • SHA256 b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
controlhostquasar

Malware Config

Extracted

Family

  • quasar

Version

  • 1.3.0.0

Botnet

  • Controlhost

C2

  • 121.43.158.106:4782

  • yc01h.11ychos.xyz:4782

Mutex

  • QSR_MUTEX_GFWuzMTNQOijYUKopR

Attributes
  • encryption_key

    Xym3BhtshKCyrit7obQT8XbWGz4i7Yw4

  • install_name

    Controlhost.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    Controlhost

  • subdirectory

    Controlhost

Signatures

  • Detects Windows executables referencing non-Windows User-Agents 1 IoCs
  • Detects executables containing common artifacts observed in infostealers 1 IoCs
  • Quasar family
    quasar
  • Quasar payload 1 IoCs

File Explorer

  • b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd
    .exe 539KB

b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd

  • IMPHASH f34d5f2d4577ed6d9ceec516c1f5a744
  • SHA256 b923f253757397be0e1b86c92a0854d0eef612fcc3c99fd5be8f96e309d8d5fd
  • MD5 SHA1 SHA512 SSDEEP
windows:4windowsx86arch:x86

  • Detects Windows executables referencing non-Windows User-Agents

  • Detects executables containing common artifacts observed in infostealers

  • Quasar payload

PE Signature issue

Digest
56:b3:9b:da:1a:7c:07:fe:8d:9d:ed:a3:0b:64:4d:a8:bd:6a:e2:bc
Digest Algorithm
sha1
PE Digests Matches
Trusted
Not trusted
Signing Certificate
CN=Microsoft Corporation
Chains

Dec 5, 2019

Minor OS version
0
Major OS version
4
Entry point
551438
Magic Number
267
Subsystem
IMAGE_SUBSYSTEM_WINDOWS_GUI
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_NO_SEH IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_32BIT_MACHINE
PDB paths