Analysis
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max time kernel
151s -
max time network
157s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
01-12-2023 09:25
Static task
static1
Behavioral task
behavioral1
Sample
B.exe
Resource
win7-20231020-en
Behavioral task
behavioral2
Sample
B.exe
Resource
win10v2004-20231127-en
General
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Target
B.exe
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Size
716KB
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MD5
8c366167246b6e371d4be611105206e3
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SHA1
5689b19440aaa57b8893f7fabaff725963b92483
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SHA256
bee896925d62192aff4e13abda9cc0cff1cd063778b2dadb45035edd5d274c8a
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SHA512
9b5089b2656c24ac82b3c01e1d22e6bea3a1e1906104e5080a07404162b4cf595624ccd989c49341852fc22a939a3d84064fe54deb95b37ebc5b944146ebde7a
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SSDEEP
12288:rFdIfzChVnn1eJmllQAxyvyHhCR55JyRM/zZ0QEVJK:JszChV9wYtHhCR5/zqQeI
Malware Config
Extracted
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
EwQnrCo8
Extracted
agenttesla
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
[email protected] - Password:
EwQnrCo8 - 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:
B.exedescription pid process target process PID 3812 set thread context of 1156 3812 B.exe B.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
B.exepid process 1156 B.exe 1156 B.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
B.exedescription pid process Token: SeDebugPrivilege 1156 B.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
B.exedescription pid process target process PID 3812 wrote to memory of 1156 3812 B.exe B.exe PID 3812 wrote to memory of 1156 3812 B.exe B.exe PID 3812 wrote to memory of 1156 3812 B.exe B.exe PID 3812 wrote to memory of 1156 3812 B.exe B.exe PID 3812 wrote to memory of 1156 3812 B.exe B.exe PID 3812 wrote to memory of 1156 3812 B.exe B.exe PID 3812 wrote to memory of 1156 3812 B.exe B.exe PID 3812 wrote to memory of 1156 3812 B.exe B.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\B.exe"C:\Users\Admin\AppData\Local\Temp\B.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3812 -
C:\Users\Admin\AppData\Local\Temp\B.exe"C:\Users\Admin\AppData\Local\Temp\B.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1156
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD58ec831f3e3a3f77e4a7b9cd32b48384c
SHA1d83f09fd87c5bd86e045873c231c14836e76a05c
SHA2567667e538030e3f8ce2886e47a01af24cb0ea70528b1e821c5d8832c5076cb982
SHA51226bffa2406b66368bd412bf25869a792631455645992cdcade2dbc13a2e56fb546414a6a9223b94c96c38d89187add6678d4779a88b38b0c9e36be8527b213c3