Analysis
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max time kernel
127s -
max time network
124s -
platform
windows10_x64 -
resource
win10-en-20211014 -
submitted
23-10-2021 08:18
Static task
static1
Behavioral task
behavioral1
Sample
ad83f4a4.exe
Resource
win7-en-20210920
Behavioral task
behavioral2
Sample
ad83f4a4.exe
Resource
win10-en-20211014
General
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Target
ad83f4a4.exe
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Size
1.1MB
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MD5
c91f24fcf484e59d3ab03e707144459a
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SHA1
9b21351158fc241ecc52a51beca027c1162694d6
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SHA256
ad83f4a4563b94420182654f956f45c6555d88c4fb0392dbe73df0eeafbdfc17
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SHA512
14cae63fa00235b8300e3fbf9dd71ba45692e5de692e2ab418f647a43de81de6272491b31ad7af5d4e5ad9236749c800e3eb83971d77491047eda428b0a000b7
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
us2.smtp.mailhostbox.com - Port:
587 - Username:
sales@xxltrucck.com - Password:
zxcvbnm12345
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 2 IoCs
Processes:
resource yara_rule behavioral2/memory/2424-124-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/2424-125-0x000000000043759E-mapping.dmp family_agenttesla -
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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
ad83f4a4.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 ad83f4a4.exe Key opened \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 ad83f4a4.exe Key opened \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 ad83f4a4.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
ad83f4a4.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\nwlrFL = "C:\\Users\\Admin\\AppData\\Roaming\\nwlrFL\\nwlrFL.exe" ad83f4a4.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
ad83f4a4.exedescription pid process target process PID 1324 set thread context of 2424 1324 ad83f4a4.exe ad83f4a4.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
ad83f4a4.exead83f4a4.exepid process 1324 ad83f4a4.exe 1324 ad83f4a4.exe 2424 ad83f4a4.exe 2424 ad83f4a4.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
ad83f4a4.exead83f4a4.exedescription pid process Token: SeDebugPrivilege 1324 ad83f4a4.exe Token: SeDebugPrivilege 2424 ad83f4a4.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
ad83f4a4.exedescription pid process target process PID 1324 wrote to memory of 3952 1324 ad83f4a4.exe ad83f4a4.exe PID 1324 wrote to memory of 3952 1324 ad83f4a4.exe ad83f4a4.exe PID 1324 wrote to memory of 3952 1324 ad83f4a4.exe ad83f4a4.exe PID 1324 wrote to memory of 2424 1324 ad83f4a4.exe ad83f4a4.exe PID 1324 wrote to memory of 2424 1324 ad83f4a4.exe ad83f4a4.exe PID 1324 wrote to memory of 2424 1324 ad83f4a4.exe ad83f4a4.exe PID 1324 wrote to memory of 2424 1324 ad83f4a4.exe ad83f4a4.exe PID 1324 wrote to memory of 2424 1324 ad83f4a4.exe ad83f4a4.exe PID 1324 wrote to memory of 2424 1324 ad83f4a4.exe ad83f4a4.exe PID 1324 wrote to memory of 2424 1324 ad83f4a4.exe ad83f4a4.exe PID 1324 wrote to memory of 2424 1324 ad83f4a4.exe ad83f4a4.exe -
outlook_office_path 1 IoCs
Processes:
ad83f4a4.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 ad83f4a4.exe -
outlook_win_path 1 IoCs
Processes:
ad83f4a4.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 ad83f4a4.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\ad83f4a4.exe"C:\Users\Admin\AppData\Local\Temp\ad83f4a4.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ad83f4a4.exe"C:\Users\Admin\AppData\Local\Temp\ad83f4a4.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\ad83f4a4.exe"C:\Users\Admin\AppData\Local\Temp\ad83f4a4.exe"2⤵
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\ad83f4a4.exe.logMD5
0c2899d7c6746f42d5bbe088c777f94c
SHA1622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1
SHA2565b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458
SHA512ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078
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memory/1324-122-0x00000000075A0000-0x00000000075A5000-memory.dmpFilesize
20KB
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memory/1324-117-0x00000000056C0000-0x00000000056C1000-memory.dmpFilesize
4KB
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memory/1324-119-0x00000000051C0000-0x00000000056BE000-memory.dmpFilesize
5.0MB
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memory/1324-120-0x0000000005180000-0x0000000005181000-memory.dmpFilesize
4KB
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memory/1324-121-0x0000000007640000-0x0000000007641000-memory.dmpFilesize
4KB
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memory/1324-115-0x0000000000840000-0x0000000000841000-memory.dmpFilesize
4KB
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memory/1324-123-0x0000000007AA0000-0x0000000007B7B000-memory.dmpFilesize
876KB
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memory/1324-118-0x00000000051C0000-0x00000000051C1000-memory.dmpFilesize
4KB
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memory/2424-124-0x0000000000400000-0x000000000043C000-memory.dmpFilesize
240KB
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memory/2424-125-0x000000000043759E-mapping.dmp
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memory/2424-131-0x00000000055A0000-0x00000000055A1000-memory.dmpFilesize
4KB
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memory/2424-132-0x0000000005B40000-0x0000000005B41000-memory.dmpFilesize
4KB
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memory/2424-133-0x0000000006320000-0x0000000006321000-memory.dmpFilesize
4KB
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memory/2424-136-0x00000000055A1000-0x00000000055A2000-memory.dmpFilesize
4KB