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授業deえっち？_chs.exe Ransomware STOP/Djvu Analysis

Updated 1 year ago
Checked by Malware Check
授業deえっち？_chs.exe

Technical Analysis

File Name 授業deえっち？_chs.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.165.174
Database Version 2024-02-17 12:00:15 UTC
⚠

Ransom.Win32.STOP.dg!se51856

Malware family: STOP/Djvu

STOP/Djvu ransomware encrypts files on victim systems and demands ransom payments for decryption keys. This ransomware family has maintained consistent activity over several years, affecting both individual users and organizational networks through various distribution methods.
N/A
Detection Rate
6,094,848
File Size (bytes)
2024-02-17
Analysis Date

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File Identification

Hash Type Value Action
MD5
c02fb5958ee0f83d5d4e03285dcbfb4c
SHA1
9504fc0a48505573efe6727f972551739780695b
SHA256
4bd534e4e7aa468cda99bc33a82a58d7f36af31dba86db564f7f31925c36e6e0
SHA512
b7f19545538aecbc9e12c3b6000b0321ab7fca268c1dbb7034e5b16a4551fc713f26b80f81d7ff15f276b7bd533b4108a88364c7e1a363d4862fe092c2cc02c9
ImpHash
2f727a975c44a2925ace416e4a5ad2d8

PE Analysis

Basic Information

▼
Icon
Hash: 843c789cffd4754ba8e00062d3092cb2
Fuzzy: 829bcb0afdb95882b0ccb82856de13cd
dHash: fe5a9a929a9a8ec0
Image Base 0x00400000
Entry Point 0x00464c9a
Compilation Time 2011-07-15 12:47:38
Checksum 0x000d9703 (Actual: 0x005d73ef)
OS Version 4.0
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows
Digital Signature The PE file does not contain a certificate table.
Imports 8 libraries
kernel32, user32, advapi32, oleaut32, ole32, ntdll, SHFolder, shlwapi
Exports 0 functions
Resources 40 Resources
Sections 6 Sections

PE Sections

▼
Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 644,266 bytes 647,168 bytes 6.73 (Compressed) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ 0FAC66CC26DD8A708DFA1A65912C180D
.rdata 0x0009f000 29,218 bytes 32,768 bytes 6.30 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ C98A4BEEAC7B84A3CAADC7E553A36372
.data 0x000a7000 1,114,936 bytes 114,688 bytes 6.03 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE F0DB64E1F22887EC54D642A453020E97
.rsrc 0x001b8000 31,476 bytes 32,768 bytes 5.19 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 9C372FCE5DB3F57953B024D3238EA398
.enigma1 0x001c0000 4,096 bytes 4,972,544 bytes 6.82 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 4DDD0E7D8D5AB326D899B2F8CA8FFA2C
.enigma2 0x001c1000 290,816 bytes 290,816 bytes 5.86 (Normal) IMAGE_SCN_CNT_CODE|IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_CNT_UNINITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE FC7440D07BCE52CC856FF210C4BA8AD3
Entropy Analysis Alert

2 section(s) with elevated entropy (≥6.5) - possible compression

Resource Analysis

▼
Total Resources: 40 (28,276 bytes)
Resource Type Count Total Size Percentage
RT_CURSOR 1 308 bytes
1.1%
RT_ICON 3 7,352 bytes
26%
RT_MENU 9 7,250 bytes
25.6%
RT_DIALOG 23 12,724 bytes
45%
RT_STRING 1 104 bytes
0.4%
RT_GROUP_CURSOR 1 20 bytes
0.1%
RT_GROUP_ICON 1 48 bytes
0.2%
RT_MANIFEST 1 470 bytes
1.7%

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

The PE file does not contain a certificate table.

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

Ransom.Win32.STOP.dg!se51856 Removal

Gridinsoft has the capability to identify and eliminate Ransom.Win32.STOP.dg!se51856 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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