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Cobaltstrike_shellcode.exe Trojan Agent Analysis

Updated 2 days ago
Checked by Malaware Check
cobaltstrike_shellcode.exe

Technical Analysis

File Name cobaltstrike_shellcode.exe
File Type
PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows
Scanner Version 1.0.217.174
Database Version 2025-05-30 01:00:17 UTC
⚠

Trojan.Win32.Agent.vb!s1

Malware family: Agent

Trojan Agent malware disguises itself as legitimate software while performing unauthorized activities including data theft and providing remote system access to threat actors.
N/A
Detection Rate
224,768
File Size (bytes)
2025-05-30
Analysis Date

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File Identification

Hash Type Value Action
MD5
8e4d8b8796d2188324a0cfd6fdc8de92
SHA1
9e7a053d34eb00e732e470bc28cc1fa4aa030b8f
SHA256
1ae532cc0fa2e16cac4f23e289741e256cf517afbbb536aeeb0d7cd601bc05a1
SHA512
db4ced8b71b63a7bd48a5bf96270e99c7380865ec31e875b9e0862535298828f4bbae3a4feeb52ef507a8ba461b744c1ce338e3ed191e90cb7079f209ecdbcf3
ImpHash
829da329ce140d873b4a8bde2cbfaa7e

PE Analysis

Basic Information

▼
Image Base 0x00400000
Entry Point 0x00409000
Compilation Time 2018-03-22 20:35:00
Checksum 0x0004007d (Actual: 0x000401c5)
OS Version 4.0
PEiD Signatures PE32 executable (GUI) Intel 80386 (stripped to external PDB), for MS Windows
Digital Signature No valid SignedData structure was found.
Imports 2 libraries
KERNEL32, msvcrt
Exports 0 functions
Resources 0 Resources
Sections 8 Sections

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 6,852 bytes 7,168 bytes 5.83 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ|IMAGE_SCN_ALIGN_16BYTES 0BC7C2F2DB333E5778E909890D9E8894
.data 0x00003000 1,572 bytes 2,048 bytes 2.56 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE|IMAGE_SCN_ALIGN_32BYTES 9D60A3432AA5F4951049C77A5DC197BB
.rdata 0x00004000 720 bytes 1,024 bytes 4.23 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_ALIGN_4BYTES 77EB2142360EFDB76CCAE3251D953FBA
.bss 0x00005000 1,052 bytes 0 bytes 0.00 (Normal) IMAGE_SCN_CNT_UNINITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE|IMAGE_SCN_ALIGN_32BYTES D41D8CD98F00B204E9800998ECF8427E
.idata 0x00006000 1,584 bytes 2,048 bytes 4.13 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE|IMAGE_SCN_ALIGN_4BYTES E08C6B10DA2DBA27DBECB9AEEC418FDA
.CRT 0x00007000 52 bytes 512 bytes 0.27 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE|IMAGE_SCN_ALIGN_4BYTES 0C2AC70A2303EA6EDE115718B8ACA665
.tls 0x00008000 32 bytes 512 bytes 0.22 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE|IMAGE_SCN_ALIGN_4BYTES FBB2F655A2D41A7ED1460A18DF87B605
.xdyr 0x00009000 210,160 bytes 210,432 bytes 7.97 (Packed/Encrypted) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 53D67C42A8C3F06D42B6AF7C01AC0F9C
Entropy Analysis Alert

1 section(s) with high entropy (≥7.5) detected - possible packing/encryption

Certificate Chain Analysis

▼
No Digital Signatures

This file is not digitally signed.

Security Implications:
  • Cannot verify the publisher's identity
  • Increased security risk when running this file
  • May trigger security warnings on some systems

⚠ This file either lacks a digital signature or the certificate chain could not be verified
Exercise caution when executing unsigned files from unknown sources

Certificate Verification Status

No valid SignedData structure was found.

Recommendation: Verify the file source and ensure it comes from a trusted publisher.

Trojan.Win32.Agent.vb!s1 Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win32.Agent.vb!s1 without requiring further user intervention.

Download Anti-Malware

Removal Instructions

Follow these steps to completely remove the threat from your system

  1. Start by downloading Gridinsoft Anti-Malware to your computer.
  2. Double-click on the gsam-en-install.exe file and follow the on-screen instructions to install the program.
  3. Once the installation of Gridinsoft Anti-Malware is complete, the program will open on the Scan screen.
  4. Click on the "Standard Scan" button to begin scanning your computer for threats.
  5. After the scanning process is finished, click on "Clean Now" to remove any detected threats.
  6. If prompted, restart your system to complete the removal process and ensure all threats are eliminated.
Important: Before You Start
Disconnect from the internet to prevent the malware from spreading or downloading additional threats. Run the scan in Safe Mode for better detection and removal of persistent threats.

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