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Analysis
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max time kernel
148s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
27/10/2024, 22:31
Static task
static1
Behavioral task
behavioral1
Sample
RemittanceReceipt.exe
Resource
win7-20241010-en
General
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Target
RemittanceReceipt.exe
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Size
698KB
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MD5
db9a323fde82eac0d972eec0acde0209
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SHA1
88ead16576193df0d647c722d70b79f50300e852
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SHA256
e93171125e897ba3a556f1b0171629d2a9aaa3298510f97b5d7cda44b9c3c313
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SHA512
d22a3073ea9d5c6111e61200521fa9453fc5c5814a4cd64595d5d297c6c5f9d2b5d186d10700728d19087a72c8c392a87797ffe5a48440a42165b095f12204ad
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SSDEEP
12288:KCfiaaMHHsczu6ko6E52x82u6/DsXsW7mbXt8V8XME+L:KYi5MH1z9J2du6LsXGtm8Ra
Malware Config
Extracted
Protocol: smtp- Host:
smtp.privateemail.com - Port:
587 - Username:
[email protected] - Password:
payment1759
Extracted
agenttesla
Protocol: smtp- Host:
smtp.privateemail.com - Port:
587 - Username:
[email protected] - Password:
payment1759 - 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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Agenttesla family
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Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 1376 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation RemittanceReceipt.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 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 25 api.ipify.org 26 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 716 set thread context of 4976 716 RemittanceReceipt.exe 101 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 3 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RemittanceReceipt.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RemittanceReceipt.exe -
Suspicious behavior: EnumeratesProcesses 7 IoCs
pid Process 716 RemittanceReceipt.exe 716 RemittanceReceipt.exe 716 RemittanceReceipt.exe 4976 RemittanceReceipt.exe 4976 RemittanceReceipt.exe 1376 powershell.exe 1376 powershell.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 716 RemittanceReceipt.exe Token: SeDebugPrivilege 4976 RemittanceReceipt.exe Token: SeDebugPrivilege 1376 powershell.exe -
Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 716 wrote to memory of 1376 716 RemittanceReceipt.exe 99 PID 716 wrote to memory of 1376 716 RemittanceReceipt.exe 99 PID 716 wrote to memory of 1376 716 RemittanceReceipt.exe 99 PID 716 wrote to memory of 4976 716 RemittanceReceipt.exe 101 PID 716 wrote to memory of 4976 716 RemittanceReceipt.exe 101 PID 716 wrote to memory of 4976 716 RemittanceReceipt.exe 101 PID 716 wrote to memory of 4976 716 RemittanceReceipt.exe 101 PID 716 wrote to memory of 4976 716 RemittanceReceipt.exe 101 PID 716 wrote to memory of 4976 716 RemittanceReceipt.exe 101 PID 716 wrote to memory of 4976 716 RemittanceReceipt.exe 101 PID 716 wrote to memory of 4976 716 RemittanceReceipt.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\RemittanceReceipt.exe"C:\Users\Admin\AppData\Local\Temp\RemittanceReceipt.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:716 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\RemittanceReceipt.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1376
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C:\Users\Admin\AppData\Local\Temp\RemittanceReceipt.exe"C:\Users\Admin\AppData\Local\Temp\RemittanceReceipt.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4976
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Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82