Analysis
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max time kernel
153s -
max time network
157s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
09-11-2020 19:37
Behavioral task
behavioral1
Sample
Salary.receipt.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
Salary.receipt.exe
Resource
win10v20201028
General
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Target
Salary.receipt.exe
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Size
507KB
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MD5
2ed6761b5c7c9bb55e0d800c64398192
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SHA1
28832ad3b22e7a6bce3d16e11aa87654f34acef5
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SHA256
94b82f0655f1a9554b3cea8e31ac76ffd4cbcb32ebee539fb7706d4ced615fa7
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SHA512
71a56a17e0a45f7a57a4bba731e0f9b764e74d3cd76ad0ffea82d5f77987446146b2c07380c86d65a9281ef2beb706f81346dd09daf080eb962e0cffcbdd4a7c
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.emjayes.com - Port:
587 - Username:
alert@emjayes.com - Password:
covid2019$
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
Processes:
resource yara_rule behavioral1/memory/1980-4-0x00000000006F0000-0x00000000006F3000-memory.dmp coreentity -
AgentTesla Payload 4 IoCs
Processes:
resource yara_rule behavioral1/memory/1752-6-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1752-7-0x000000000044C85E-mapping.dmp family_agenttesla behavioral1/memory/1752-8-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla behavioral1/memory/1752-9-0x0000000000400000-0x0000000000452000-memory.dmp family_agenttesla -
Processes:
resource yara_rule behavioral1/memory/1980-5-0x0000000007410000-0x0000000007463000-memory.dmp rezer0 -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Salary.receipt.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\NYjJTsx = "C:\\Users\\Admin\\AppData\\Roaming\\NYjJTsx\\NYjJTsx.exe" Salary.receipt.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Salary.receipt.exedescription pid process target process PID 1980 set thread context of 1752 1980 Salary.receipt.exe Salary.receipt.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
Salary.receipt.exeSalary.receipt.exepid process 1980 Salary.receipt.exe 1752 Salary.receipt.exe 1752 Salary.receipt.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Salary.receipt.exeSalary.receipt.exedescription pid process Token: SeDebugPrivilege 1980 Salary.receipt.exe Token: SeDebugPrivilege 1752 Salary.receipt.exe -
Suspicious use of SetWindowsHookEx 3 IoCs
Processes:
Salary.receipt.exeSalary.receipt.exepid process 1980 Salary.receipt.exe 1980 Salary.receipt.exe 1752 Salary.receipt.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
Salary.receipt.exeSalary.receipt.exedescription pid process target process PID 1980 wrote to memory of 1740 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1740 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1740 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1740 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1752 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1752 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1752 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1752 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1752 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1752 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1752 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1752 1980 Salary.receipt.exe Salary.receipt.exe PID 1980 wrote to memory of 1752 1980 Salary.receipt.exe Salary.receipt.exe PID 1752 wrote to memory of 560 1752 Salary.receipt.exe netsh.exe PID 1752 wrote to memory of 560 1752 Salary.receipt.exe netsh.exe PID 1752 wrote to memory of 560 1752 Salary.receipt.exe netsh.exe PID 1752 wrote to memory of 560 1752 Salary.receipt.exe netsh.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Salary.receipt.exe"C:\Users\Admin\AppData\Local\Temp\Salary.receipt.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Salary.receipt.exe"{path}"2⤵
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C:\Users\Admin\AppData\Local\Temp\Salary.receipt.exe"{path}"2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/560-13-0x0000000000000000-mapping.dmp
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memory/1560-3-0x000007FEF7810000-0x000007FEF7A8A000-memory.dmpFilesize
2.5MB
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memory/1752-6-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1752-7-0x000000000044C85E-mapping.dmp
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memory/1752-8-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1752-9-0x0000000000400000-0x0000000000452000-memory.dmpFilesize
328KB
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memory/1752-10-0x0000000074350000-0x0000000074A3E000-memory.dmpFilesize
6.9MB
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memory/1980-0-0x00000000743D0000-0x0000000074ABE000-memory.dmpFilesize
6.9MB
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memory/1980-1-0x0000000000CB0000-0x0000000000CB1000-memory.dmpFilesize
4KB
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memory/1980-4-0x00000000006F0000-0x00000000006F3000-memory.dmpFilesize
12KB
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memory/1980-5-0x0000000007410000-0x0000000007463000-memory.dmpFilesize
332KB