Analysis
- max time kernel
141s - max time network
125s - platform
windows10_x64 - resource
win10 - submitted
15/09/2020, 05:43
Static task
static1
Behavioral task
behavioral1
Sample
3fefcba2ae713f4b6f46e457ca28f4c2.exe
Resource
win7
Behavioral task
behavioral2
Sample
3fefcba2ae713f4b6f46e457ca28f4c2.exe
Resource
win10
General
- Target 3fefcba2ae713f4b6f46e457ca28f4c2.exe
- Size 453KB
- Sample200915-7b89vs5gje
- SHA256 cc4bdca8feec2bd7736eb6edb0b17769815bb174d1dcb11cb652952a760f1a67
- MD5 3fefcba2ae713f4b6f46e457ca28f4c2
- SHA1 261346b1439437ac74b00239d67bb2f84a1b6d27
- SHA512 f7650380583a70ee5fe3ab2ffc0e0c883f45ef9dbb0dba7f805ee44e411e57732845243c3d135129ec341ebd28bc717bff08af5816b653ab48a90a58d178a676
- MD5 SHA1 SHA512
Malware Config
Extracted
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agenttesla
-
Protocol
smtp
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Host
mail.gautengelectrical.co.za
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Port
587
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Username
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Password
*2wo)L6EXH7%
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 2 IoCs
resource yara_rule behavioral2/memory/2260-2-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/2260-3-0x000000000043741E-mapping.dmp family_agenttesla - Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 3932 set thread context of 2260 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 78 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1940 schtasks.exe - Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 2260 3fefcba2ae713f4b6f46e457ca28f4c2.exe 2260 3fefcba2ae713f4b6f46e457ca28f4c2.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe Token: SeDebugPrivilege 2260 3fefcba2ae713f4b6f46e457ca28f4c2.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2260 3fefcba2ae713f4b6f46e457ca28f4c2.exe - Suspicious use of WriteProcessMemory 11 IoCs
description pid Process procid_target PID 3932 wrote to memory of 1940 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 76 PID 3932 wrote to memory of 1940 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 76 PID 3932 wrote to memory of 1940 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 76 PID 3932 wrote to memory of 2260 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 78 PID 3932 wrote to memory of 2260 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 78 PID 3932 wrote to memory of 2260 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 78 PID 3932 wrote to memory of 2260 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 78 PID 3932 wrote to memory of 2260 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 78 PID 3932 wrote to memory of 2260 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 78 PID 3932 wrote to memory of 2260 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 78 PID 3932 wrote to memory of 2260 3932 3fefcba2ae713f4b6f46e457ca28f4c2.exe 78
Processes
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C:\Users\Admin\AppData\Local\Temp\3fefcba2ae713f4b6f46e457ca28f4c2.exe"C:\Users\Admin\AppData\Local\Temp\3fefcba2ae713f4b6f46e457ca28f4c2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3932 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CJaGszzoPEk" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB878.tmp"2⤵
- Creates scheduled task(s)
PID:1940
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C:\Users\Admin\AppData\Local\Temp\3fefcba2ae713f4b6f46e457ca28f4c2.exe"C:\Users\Admin\AppData\Local\Temp\3fefcba2ae713f4b6f46e457ca28f4c2.exe"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2260
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