Analysis
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max time kernel
59s -
max time network
40s -
platform
windows7_x64 -
resource
win7 -
submitted
09-07-2020 07:42
Static task
static1
Behavioral task
behavioral1
Sample
PO-20200709.exe
Resource
win7
Behavioral task
behavioral2
Sample
PO-20200709.exe
Resource
win10
General
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Target
PO-20200709.exe
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Size
922KB
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MD5
c2a716ded7676fcc85c9f7299128e85a
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SHA1
c612356859cc4f15e251a22f009f86e0acce05d9
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SHA256
da2d328729fc82001649fea94517079e39a3579d3154778bda61072c5c3b2590
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SHA512
d8754f6fe55228e3fbde6d8a4390f396817873adc3f6f8962bc527b8d1c373752ca5e3c36cb88980b69555632005d9ba04a73aec4dc4fbb07d0c62a70c0589d0
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.dstec.mx - Port:
587 - Username:
[email protected] - Password:
.chimaobi@070
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 3 IoCs
resource yara_rule behavioral1/memory/852-3-0x0000000000400000-0x00000000004A5000-memory.dmp family_agenttesla behavioral1/memory/852-4-0x0000000000380000-0x00000000003CC000-memory.dmp family_agenttesla behavioral1/memory/852-6-0x0000000000220000-0x0000000000267000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\system32\drivers\etc\hosts PO-20200709.exe -
resource yara_rule behavioral1/memory/852-0-0x0000000000400000-0x00000000004A5000-memory.dmp upx behavioral1/memory/852-2-0x0000000000400000-0x00000000004A5000-memory.dmp upx behavioral1/memory/852-3-0x0000000000400000-0x00000000004A5000-memory.dmp upx -
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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Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1131729243-447456001-3632642222-1000\Software\Microsoft\Windows\CurrentVersion\Run\Start = "C:\\Users\\Admin\\AppData\\Roaming\\Start\\Start.exe" PO-20200709.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1012 set thread context of 852 1012 PO-20200709.exe 24 -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 1012 PO-20200709.exe 852 PO-20200709.exe 852 PO-20200709.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1012 PO-20200709.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 852 PO-20200709.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1012 wrote to memory of 852 1012 PO-20200709.exe 24 PID 1012 wrote to memory of 852 1012 PO-20200709.exe 24 PID 1012 wrote to memory of 852 1012 PO-20200709.exe 24 PID 1012 wrote to memory of 852 1012 PO-20200709.exe 24
Processes
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C:\Users\Admin\AppData\Local\Temp\PO-20200709.exe"C:\Users\Admin\AppData\Local\Temp\PO-20200709.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1012 -
C:\Users\Admin\AppData\Local\Temp\PO-20200709.exe"C:\Users\Admin\AppData\Local\Temp\PO-20200709.exe"2⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:852
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