Analysis
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max time kernel
125s -
max time network
54s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system -
submitted
05-12-2023 17:51
Static task
static1
Behavioral task
behavioral1
Sample
INVOICE.exe
Resource
win7-20231129-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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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
INVOICE.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-433534792-1200107535-3148087551-1000\Control Panel\International\Geo\Nation INVOICE.exe -
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 4728 set thread context of 3588 4728 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 4 IoCs
Processes:
powershell.exeINVOICE.exepid process 2692 powershell.exe 3588 INVOICE.exe 3588 INVOICE.exe 2692 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exeINVOICE.exedescription pid process Token: SeDebugPrivilege 2692 powershell.exe Token: SeDebugPrivilege 3588 INVOICE.exe -
Suspicious use of WriteProcessMemory 14 IoCs
Processes:
INVOICE.exedescription pid process target process PID 4728 wrote to memory of 2692 4728 INVOICE.exe powershell.exe PID 4728 wrote to memory of 2692 4728 INVOICE.exe powershell.exe PID 4728 wrote to memory of 2692 4728 INVOICE.exe powershell.exe PID 4728 wrote to memory of 2164 4728 INVOICE.exe schtasks.exe PID 4728 wrote to memory of 2164 4728 INVOICE.exe schtasks.exe PID 4728 wrote to memory of 2164 4728 INVOICE.exe schtasks.exe PID 4728 wrote to memory of 3588 4728 INVOICE.exe INVOICE.exe PID 4728 wrote to memory of 3588 4728 INVOICE.exe INVOICE.exe PID 4728 wrote to memory of 3588 4728 INVOICE.exe INVOICE.exe PID 4728 wrote to memory of 3588 4728 INVOICE.exe INVOICE.exe PID 4728 wrote to memory of 3588 4728 INVOICE.exe INVOICE.exe PID 4728 wrote to memory of 3588 4728 INVOICE.exe INVOICE.exe PID 4728 wrote to memory of 3588 4728 INVOICE.exe INVOICE.exe PID 4728 wrote to memory of 3588 4728 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⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4728 -
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:2692 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\eTjKPkz" /XML "C:\Users\Admin\AppData\Local\Temp\tmp76B6.tmp"2⤵
- Creates scheduled task(s)
PID:2164 -
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:3588
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD5b2a07d7be8874b75fb5acb84ea9686b2
SHA16288f18aacbf752f681c589b431525973905bd0e
SHA25619376aa9698b9e4f2880d5e0cd7a81cd81fccce8c8ce75ed5383e49108d22864
SHA512f21a6722883957b2cd9092657df6c2ea49295813098dbaaec7bbcb3790ce1ec91dce7579ba8c78cb025c795801648c4a7d1d7eefd34801435cc8a8769a6e0664