Analysis
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max time kernel
120s -
max time network
120s -
platform
windows7_x64 -
resource
win7-20231130-en -
resource tags
arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system -
submitted
05-12-2023 07:25
Static task
static1
Behavioral task
behavioral1
Sample
INVOICE.exe
Resource
win7-20231130-en
Behavioral task
behavioral2
Sample
INVOICE.exe
Resource
win10v2004-20231130-en
General
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Target
INVOICE.exe
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Size
697KB
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MD5
ba367cc4cfb9f9b18f2a776ffa4fc4aa
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SHA1
204d17e23d81391809aab7e857b7a918f790fa98
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SHA256
9fdc30c0a41d836508108bd98ce5176a6739f8ef4c0395bb81e8d85fe670d86f
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SHA512
ab376384d3289fa54cfe4543b998abbe280d68e74b2e110827df239208c21a1ad0820df28471248590f83167c438be5c3d2db7fa0e6c3e6deaf62b310b559345
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SSDEEP
12288:Ubl5nF8teO9wP7uZ15vvFIY1Z+1OBhDe4CTrTVMK9XC+iinnjhZj4dqrlbJ:4l+eOq+r3Fl141OBle4C5hfnzHhbJ
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.tecnosilos.com.py - Port:
587 - Username:
[email protected] - Password:
dX,@;SPvm;h{ - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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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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Suspicious use of SetThreadContext 1 IoCs
Processes:
INVOICE.exedescription pid process target process PID 2220 set thread context of 2716 2220 INVOICE.exe INVOICE.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
powershell.exeINVOICE.exepid process 2252 powershell.exe 2716 INVOICE.exe 2716 INVOICE.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exeINVOICE.exedescription pid process Token: SeDebugPrivilege 2252 powershell.exe Token: SeDebugPrivilege 2716 INVOICE.exe -
Suspicious use of WriteProcessMemory 17 IoCs
Processes:
INVOICE.exedescription pid process target process PID 2220 wrote to memory of 2252 2220 INVOICE.exe powershell.exe PID 2220 wrote to memory of 2252 2220 INVOICE.exe powershell.exe PID 2220 wrote to memory of 2252 2220 INVOICE.exe powershell.exe PID 2220 wrote to memory of 2252 2220 INVOICE.exe powershell.exe PID 2220 wrote to memory of 3068 2220 INVOICE.exe schtasks.exe PID 2220 wrote to memory of 3068 2220 INVOICE.exe schtasks.exe PID 2220 wrote to memory of 3068 2220 INVOICE.exe schtasks.exe PID 2220 wrote to memory of 3068 2220 INVOICE.exe schtasks.exe PID 2220 wrote to memory of 2716 2220 INVOICE.exe INVOICE.exe PID 2220 wrote to memory of 2716 2220 INVOICE.exe INVOICE.exe PID 2220 wrote to memory of 2716 2220 INVOICE.exe INVOICE.exe PID 2220 wrote to memory of 2716 2220 INVOICE.exe INVOICE.exe PID 2220 wrote to memory of 2716 2220 INVOICE.exe INVOICE.exe PID 2220 wrote to memory of 2716 2220 INVOICE.exe INVOICE.exe PID 2220 wrote to memory of 2716 2220 INVOICE.exe INVOICE.exe PID 2220 wrote to memory of 2716 2220 INVOICE.exe INVOICE.exe PID 2220 wrote to memory of 2716 2220 INVOICE.exe INVOICE.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\INVOICE.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2220 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\eTjKPkz.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2252 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eTjKPkz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5A31.tmp"2⤵
- Creates scheduled task(s)
PID:3068 -
C:\Users\Admin\AppData\Local\Temp\INVOICE.exe"C:\Users\Admin\AppData\Local\Temp\INVOICE.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2716
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD50454bf9ff157cc4a9c431ed0d1cdf0cd
SHA1dd10366cbf4f8d532beabb9a420b89aed61f1259
SHA2564d618cd0cf5f51e202e978a5f651e814113b34eb797bef1450fd1204c0064308
SHA512aa115f1470a8c25ceff9b89da85d4815931bee8a25160c316ed346711aecf0cf5d83b54a35b0427b36238481f9b7cfed697441b2db72258be654bc574d01b80a