Overview

overview

10

Static

static

10

2026-07-31...at.exe

windows10-2004-x64

10

2026-07-31...at.exe

windows11-ltsc_2024-x64

10

Sharing

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General

  • Target
    2026-07-31_3e282fe3d09d1c0a178b8acaab2b78b7_cobalt-strike_icedid_luca-stealer_njrat
  • Size 240KB
  • Sample260731-jfqnwsysd1
  • SHA256 57266f65546488b2233417bc290cc5ecca553237f293beb68c87abc2864e10a4
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
upxbackdoorvalleyrat_s2

Malware Config

Extracted

Family

  • valleyrat_s2

Version

  • 1.0

C2

  • 285419033aa.e1.luyouxia.net:9999

  • 127.0.0.1:80

Attributes
  • campaign_date

    2026. 7.25

Signatures

  • Family: ValleyRat

    ValleyRat stage2 is a backdoor written in C++.

    backdoorvalleyrat_s2
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 1 IoCs
  • UPX dump on OEP (original entry point) 1 IoCs
  • UPX packed file 1 IoCs

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

    upx
  • Unsigned PE 1 IoCs

    Checks for missing Authenticode signature.

File Explorer

  • 2026-07-31_3e282fe3d09d1c0a178b8acaab2b78b7_cobalt-strike_icedid_luca-stealer_njrat
    .exe 240KB

2026-07-31_3e282fe3d09d1c0a178b8acaab2b78b7_cobalt-strike_icedid_luca-stealer_njrat

  • SHA256 57266f65546488b2233417bc290cc5ecca553237f293beb68c87abc2864e10a4
  • MD5 SHA1 SHA512 SSDEEP TLSH
windows:6windowsx64arch:x64

  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion

  • UPX dump on OEP (original entry point)

  • UPX packed file

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

    upx

  • Unsigned PE

    Checks for missing Authenticode signature.

Minor OS version
0
Major OS version
6
Entry point
41292
Magic Number
523
Subsystem
IMAGE_SUBSYSTEM_WINDOWS_GUI
DLL Characteristics
IMAGE_DLLCHARACTERISTICS_HIGH_ENTROPY_VA IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE IMAGE_DLLCHARACTERISTICS_NX_COMPAT IMAGE_DLLCHARACTERISTICS_TERMINAL_SERVER_AWARE
File Characteristics
IMAGE_FILE_EXECUTABLE_IMAGE IMAGE_FILE_LARGE_ADDRESS_AWARE IMAGE_FILE_DEBUG_STRIPPED
PDB paths