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Windows
Analysis Report
hesaphareketi-01.pdf.SCR.exe
Overview
General Information
Detection
AgentTesla
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: RegAsm connects to smtp port
Yara detected AgentTesla
Yara detected AntiVM3
.NET source code references suspicious native API functions
Contains functionality to log keystrokes (.Net Source)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Loading BitLocker PowerShell Module
Machine Learning detection for sample
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Allocates memory with a write watch (potentially for evading sandboxes)
Binary contains a suspicious time stamp
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Creates files inside the system directory
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Drops PE files
Enables debug privileges
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
IP address seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
Queries disk information (often used to detect virtual machines)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
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
Uses 32bit PE files
Uses SMTP (mail sending)
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Credential Stealer
Yara signature match
Classification
- System is w10x64
- hesaphareketi-01.pdf.SCR.exe (PID: 6592 cmdline:
"C:\Users\ user\Deskt op\hesapha reketi-01. pdf.SCR.ex e" MD5: D4E8894FB5ED5F45972882FBC6EF04DC) - powershell.exe (PID: 6692 cmdline:
"Powershel l.exe" ??? ???????-?? ????????E? ?????????x ?????????? e????????? ?c???????? ??u??????? ???t?????? ????i????? ?????o???? ??????n??? ???????P?? ????????o? ?????????l ?????????? i????????? ?c???????? ??y??????? ??? ?????? ????B????? ?????y???? ??????p??? ???????a?? ????????s? ?????????s ?????????? ????????? ?-???????? ??c??????? ???o?????? ????m????? ?????m???? ??????a??? ???????n?? ????????d ?????????C ?????????o ?????????p ?????????y ?????????- ?????????I ?????????t ?????????e ?????????m 'C:\Users \user\Desk top\hesaph areketi-01 .pdf.SCR.e xe' 'C:\Us ers\user\A ppData\Roa ming\Micro soft\Windo ws\Start M enu\Progra ms\Startup \tt.exe' MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) - conhost.exe (PID: 6708 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - RegAsm.exe (PID: 416 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\Reg Asm.exe" MD5: 0D5DF43AF2916F47D00C1573797C1A13)
- svchost.exe (PID: 5796 cmdline:
C:\Windows \System32\ svchost.ex e -k netsv cs -p -s B ITS MD5: B7F884C1B74A263F746EE12A5F7C9F6A)
- cbsBVT.exe (PID: 1068 cmdline:
"C:\Users\ user\AppDa ta\Roaming \cbsBVT\cb sBVT.exe" MD5: 0D5DF43AF2916F47D00C1573797C1A13) - conhost.exe (PID: 4628 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- cbsBVT.exe (PID: 6760 cmdline:
"C:\Users\ user\AppDa ta\Roaming \cbsBVT\cb sBVT.exe" MD5: 0D5DF43AF2916F47D00C1573797C1A13) - conhost.exe (PID: 6880 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D)
- cleanup
Name | Description | Attribution | Blogpost URLs | Link |
---|---|---|---|---|
Agent Tesla, AgentTesla | A .NET based information stealer readily available to actors due to leaked builders. The malware is able to log keystrokes, can access the host's clipboard and crawls the disk for credentials or other valuable information. It has the capability to send information back to its C&C via HTTP(S), SMTP, FTP, or towards a Telegram channel. |
{"Exfil Mode": "SMTP", "Port": "587", "Host": "business29.web-hosting.com", "Username": "admin@purchase.boats", "Password": "Esupofo234@"}
Source | Rule | Description | Author | Strings |
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JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
Click to see the 8 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID | Detects executables referencing Windows vault credential objects. Observed in infostealers | ditekSHen |
| |
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_AgentTesla_1 | Yara detected AgentTesla | Joe Security | ||
Click to see the 10 entries |
Networking |
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Source: | Author: Joe Security: |
System Summary |
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Source: | Author: Victor Sergeev, Daniil Yugoslavskiy, Gleb Sukhodolskiy, Timur Zinniatullin, oscd.community, Tim Shelton, frack113 (split): |
Source: | Author: Roberto Rodriguez @Cyb3rWard0g (rule), oscd.community (improvements): |
Source: | Author: vburov: |
⊘No Snort rule has matched
Click to jump to signature section
Show All Signature Results
AV Detection |
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Source: | Avira: |
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Source: | Network traffic detected: | ||
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Source: | HTTPS traffic detected: |
Key, Mouse, Clipboard, Microphone and Screen Capturing |
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System Summary |
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Source: | Matched rule: | ||
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Source: | Static PE information: |
Source: | File created: | Jump to behavior |
Source: | Code function: | 0_2_04B7CD3C | |
Source: | Code function: | 0_2_04B7F5B8 | |
Source: | Code function: | 0_2_04B7F5A8 | |
Source: | Code function: | 3_2_02D04B10 | |
Source: | Code function: | 3_2_02D03EF8 | |
Source: | Code function: | 3_2_02D04240 | |
Source: | Code function: | 3_2_02D0CC98 | |
Source: | Code function: | 3_2_02D0CCA8 | |
Source: | Code function: | 3_2_06B04131 | |
Source: | Code function: | 3_2_06B2B6C8 | |
Source: | Code function: | 3_2_06B2CE58 | |
Source: | Code function: | 3_2_06B27440 | |
Source: | Code function: | 3_2_06B2ADD0 | |
Source: | Code function: | 3_2_06B24D58 | |
Source: | Code function: | 3_2_06B219E8 | |
Source: | Code function: | 3_2_06B2C778 | |
Source: | Code function: | 3_2_06B21A99 |
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