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Windows
Analysis Report
ka0UKl7202.exe
Overview
General Information
Sample name: | ka0UKl7202.exerenamed because original name is a hash value |
Original sample name: | a8fd283b496ea064535eaf1df71af3df.exe |
Analysis ID: | 1421248 |
MD5: | a8fd283b496ea064535eaf1df71af3df |
SHA1: | d637cfd683c0e4b87d928f5a6bb9ae64771639b2 |
SHA256: | d6649e2e5ceba35b786f745b71b1b63dfde4e597cbbe093750065d08f0cb6e5e |
Tags: | exe |
Infos: | |
Detection
PureCrypter, PureLog Stealer
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected AntiVM3
Yara detected PureLog Stealer
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Allocates memory in foreign processes
Detected PureCrypter Trojan
Downloads files with wrong headers with respect to MIME Content-Type
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses ipconfig to lookup or modify the Windows network settings
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Allocates memory with a write watch (potentially for evading sandboxes)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Drops PE files
Enables debug privileges
Found inlined nop instructions (likely shell or obfuscated code)
HTTP GET or POST without a user agent
May sleep (evasive loops) to hinder dynamic analysis
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Sigma detected: CurrentVersion Autorun Keys Modification
Tries to load missing DLLs
Uses 32bit PE files
Uses code obfuscation techniques (call, push, ret)
Classification
- System is w10x64
- ka0UKl7202.exe (PID: 6856 cmdline:
"C:\Users\ user\Deskt op\ka0UKl7 202.exe" MD5: A8FD283B496EA064535EAF1DF71AF3DF) - cmd.exe (PID: 6256 cmdline:
"C:\Window s\System32 \cmd.exe" /c ipconfi g /release MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 7164 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - ipconfig.exe (PID: 7092 cmdline:
ipconfig / release MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB) - InstallUtil.exe (PID: 5780 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Ins tallUtil.e xe" MD5: 5D4073B2EB6D217C19F2B22F21BF8D57) - cmd.exe (PID: 7076 cmdline:
"C:\Window s\System32 \cmd.exe" /c ipconfi g /renew MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 5824 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - ipconfig.exe (PID: 1144 cmdline:
ipconfig / renew MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB)
- cvchost.exe (PID: 5980 cmdline:
"C:\Users\ user\AppDa ta\Local\c vchost.exe " MD5: A8FD283B496EA064535EAF1DF71AF3DF) - cmd.exe (PID: 6272 cmdline:
"C:\Window s\System32 \cmd.exe" /c ipconfi g /release MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 6296 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - ipconfig.exe (PID: 6720 cmdline:
ipconfig / release MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB) - InstallUtil.exe (PID: 4364 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Ins tallUtil.e xe" MD5: 5D4073B2EB6D217C19F2B22F21BF8D57) - cmd.exe (PID: 2164 cmdline:
"C:\Window s\System32 \cmd.exe" /c ipconfi g /renew MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 5196 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - ipconfig.exe (PID: 4484 cmdline:
ipconfig / renew MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB)
- cvchost.exe (PID: 6888 cmdline:
"C:\Users\ user\AppDa ta\Local\c vchost.exe " MD5: A8FD283B496EA064535EAF1DF71AF3DF) - cmd.exe (PID: 5020 cmdline:
"C:\Window s\System32 \cmd.exe" /c ipconfi g /release MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 1368 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - ipconfig.exe (PID: 2148 cmdline:
ipconfig / release MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB) - InstallUtil.exe (PID: 1312 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Ins tallUtil.e xe" MD5: 5D4073B2EB6D217C19F2B22F21BF8D57) - cmd.exe (PID: 1188 cmdline:
"C:\Window s\System32 \cmd.exe" /c ipconfi g /renew MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) - conhost.exe (PID: 5816 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - ipconfig.exe (PID: 5676 cmdline:
ipconfig / renew MD5: 3A3B9A5E00EF6A3F83BF300E2B6B67BB)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
PureCrypter | According to zscaler, PureCrypter is a fully-featured loader being sold since at least March 2021The malware has been observed distributing a variety of remote access trojans and information stealersThe loader is a .NET executable obfuscated with SmartAssembly and makes use of compression, encryption and obfuscation to evade antivirus software productsPureCrypter features provide persistence, injection and defense mechanisms that are configurable in Googles Protocol Buffer message format | No Attribution |
⊘No configs have been found
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
Click to see the 20 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
JoeSecurity_CosturaAssemblyLoader | Yara detected Costura Assembly Loader | Joe Security | ||
JoeSecurity_PureLogStealer | Yara detected PureLog Stealer | Joe Security | ||
Click to see the 9 entries |
System Summary |
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Source: | Author: Jonathan Cheong, oscd.community: |
Source: | Author: Jonathan Cheong, oscd.community: |
Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split): |
⊘No Snort rule has matched
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira: |
Source: | Avira: |
Source: | ReversingLabs: | |||
Source: | Virustotal: | Perma Link |
Source: | ReversingLabs: | |||
Source: | Virustotal: | Perma Link |
Source: | Joe Sandbox ML: |
Source: | Joe Sandbox ML: |
Source: | Static PE information: |
Source: | File created: |
Source: | Static PE information: |
Source: | Binary string: | ||
Source: | Binary string: | ||
Source: | Binary string: | ||
Source: | Binary string: |
Source: | Code function: | 0_2_05F506A8 | |
Source: | Code function: | 0_2_05F5069C | |
Source: | Code function: | 0_2_0617F2E5 | |
Source: | Code function: | 0_2_0617F110 | |
Source: | Code function: | 0_2_0617F100 | |
Source: | Code function: | 0_2_061958F0 | |
Source: | Code function: | 0_2_06195608 | |
Source: | Code function: | 0_2_06195600 | |
Source: | Code function: | 0_2_061958E0 | |
Source: | Code function: | 0_2_061959E4 | |
Source: | Code function: | 11_2_0600069C | |
Source: | Code function: | 11_2_060006A8 | |
Source: | Code function: | 11_2_0622F2F9 | |
Source: | Code function: | 11_2_0622F100 | |
Source: | Code function: | 11_2_0622F110 | |
Source: | Code function: | 11_2_062458F0 | |
Source: | Code function: | 11_2_06245600 | |
Source: | Code function: | 11_2_06245608 | |
Source: | Code function: | 11_2_062458E0 | |
Source: | Code function: | 11_2_062459E4 | |
Source: | Code function: | 15_2_063106A8 | |
Source: | Code function: | 15_2_0631069C | |
Source: | Code function: | 15_2_0655F110 | |
Source: | Code function: | 15_2_0655F100 | |
Source: | Code function: | 15_2_065A58F0 | |
Source: | Code function: | 15_2_065A5608 | |
Source: | Code function: | 15_2_065A5600 | |
Source: | Code function: | 15_2_065A58E0 | |
Source: | Code function: | 15_2_065A59E4 |
Networking |
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Source: | Bad PDF prefix: |