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Coolmuster Android Assistant.exe Trojan Downloader Analysis

Updated 1 year ago
Checked by Malware Check
Coolmuster Android Assistant.exe

Technical Analysis

File Name Coolmuster Android Assistant.exe
File Type
PE32 executable (GUI) Intel 80386, for MS Windows
Scanner Version 1.0.168.174
Database Version 2024-03-10 09:00:42 UTC
⚠

Trojan.Win32.Downloader.sa

Malware family: Downloader

Downloader Trojans specialize in retrieving and installing additional malware payloads. Unlike comprehensive malware, they focus specifically on payload delivery rather than direct system damage.
N/A
Detection Rate
53,870,592
File Size (bytes)
2024-03-10
Analysis Date

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File Identification

Hash Type Value Action
MD5
c5fd2e20ec202679e8fb857ccb066b17
SHA1
21941466100670c1aefcb78e25e649c10f82b8e5
SHA256
0ece888ea3dd94c29d1c9a0388d0bb666768fa14694cb1c7097b45db4c4a13ba
SHA512
74d1616e3f5926ae752e6729c16a0f08285e53d6b95ad12d3977da6b9b1737a59908b098c57dc855631dcc84927ecccfb319d537e45b92e1e2f23133d93c4775
ImpHash
9158747dc6240279afce84ac4d726c82

PE Analysis

Basic Information

▼
Icon
Hash: 2714d64bc44f63cf9ad786ca96f40bf7
Fuzzy: 13da93c88c8077342ad2a8216a59dedd
dHash: a24cb222728c8c90
Image Base 0x66200000
Entry Point 0x66201448
Compilation Time 2022-05-13 11:03:40
Checksum 0x00000000 (Actual: 0x03366951)
OS Version 5.1
PEiD Signatures PE32 executable (GUI) Intel 80386, for MS Windows
PDB Path d:\build\ob\bora-18970417\vos3\thinstall\modules\boot_loader.pdb
Digital Signature The PE file does not contain a certificate table.
Imports 3 libraries
KERNEL32, USER32, ntdll
Exports 0 functions
Resources 8 Resources
Sections 4 Sections

Version Information

▼
FileDescription ProductRecommendPlatform Module
FileVersion 1.0.2.1
InternalName ProductRecommendPlatform
LegalCopyright Copyright 2018
OriginalFilename ProductRecommendPlatform.exe
ProductName ProductRecommendPlatform Module
ProductVersion 1.0.2.1
ThinAppBuildDateTime 20220516 021903
ThinAppLicense DrZero
ThinAppVersion 2111.0.0-18970417
Translation 0x0409 0x04b0

PE Sections

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Name Virtual Address Virtual Size Raw Size Entropy Characteristics MD5
.text 0x00001000 109,792 bytes 110,080 bytes 6.61 (Compressed) IMAGE_SCN_CNT_CODE|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ C48CC77875789E1B52CA719EEF1A28FD
.rdata 0x0001c000 36,164 bytes 36,352 bytes 4.88 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 8F98ADF933E3E94D0002619D85226138
.data 0x00025000 164,796 bytes 156,672 bytes 1.28 (Normal) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ|IMAGE_SCN_MEM_WRITE 179445F92D5584A3238BC036D33BA547
.rsrc 0x0004e000 183,024 bytes 183,296 bytes 6.51 (Compressed) IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_READ 6B1C9FF34C749C331E0BFC3BAB4F6D69
Entropy Analysis Alert

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

Resource Analysis

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Total Resources: 8 (182,416 bytes)
Resource Type Count Total Size Percentage
RT_ICON 6 181,350 bytes
99.4%
RT_GROUP_ICON 1 90 bytes
0%
RT_VERSION 1 976 bytes
0.5%

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.

Trojan.Win32.Downloader.sa Removal

Gridinsoft has the capability to identify and eliminate Trojan.Win32.Downloader.sa 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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