Analysis
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max time kernel
117s -
max time network
118s -
platform
windows7_x64 -
resource
win7-20231130-en -
resource tags
arch:x64arch:x86image:win7-20231130-enlocale:en-usos:windows7-x64system -
submitted
05-12-2023 14:15
Static task
static1
Behavioral task
behavioral1
Sample
Nghgisxtb.exe
Resource
win7-20231130-en
Behavioral task
behavioral2
Sample
Nghgisxtb.exe
Resource
win10v2004-20231130-en
General
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Target
Nghgisxtb.exe
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Size
407KB
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MD5
913aa7a8d382f9195e8057f5592e47a9
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SHA1
538ea79a057fb8c0bd4f02c697fbefcffef87947
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SHA256
8879bff7f26b389b8d375928fc6095a3847f8602e00822e3f2f67705e2d85cc0
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SHA512
ef731541817fac134955e1e5bd632d78e5ac6b3aa9b148b4a5fb6f1acbda91c397a6f21665d91313a9d41ad2973ac0bd26f6784885f061d30d5e139503eb0ba6
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SSDEEP
12288:vTz+p0qIUakJE3iQ6ZeJfTSK7An9/dhiWSI:vTz+p0qIUakJKixZeZ8/dlS
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.asiaparadisehotel.com - Port:
587 - Username:
[email protected] - Password:
^b2ycDldex$@ - 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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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
Nghgisxtb.exeNghgisxtb.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2185821622-4133679102-1697169727-1000\Software\Microsoft\Windows\CurrentVersion\Run\Fbaoy = "C:\\Users\\Admin\\AppData\\Roaming\\Fbaoy.exe" Nghgisxtb.exe Set value (str) \REGISTRY\USER\S-1-5-21-2185821622-4133679102-1697169727-1000\Software\Microsoft\Windows\CurrentVersion\Run\TlKsFB = "C:\\Users\\Admin\\AppData\\Roaming\\TlKsFB\\TlKsFB.exe" Nghgisxtb.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 2 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
Processes:
Nghgisxtb.exedescription pid process target process PID 2164 set thread context of 2320 2164 Nghgisxtb.exe Nghgisxtb.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
Nghgisxtb.exeNghgisxtb.exepid process 2164 Nghgisxtb.exe 2164 Nghgisxtb.exe 2320 Nghgisxtb.exe 2320 Nghgisxtb.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
Nghgisxtb.exeNghgisxtb.exedescription pid process Token: SeDebugPrivilege 2164 Nghgisxtb.exe Token: SeDebugPrivilege 2320 Nghgisxtb.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
Nghgisxtb.exedescription pid process target process PID 2164 wrote to memory of 1652 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 1652 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 1652 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 1652 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 2320 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 2320 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 2320 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 2320 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 2320 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 2320 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 2320 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 2320 2164 Nghgisxtb.exe Nghgisxtb.exe PID 2164 wrote to memory of 2320 2164 Nghgisxtb.exe Nghgisxtb.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exe"C:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exe"1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2164 -
C:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exeC:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exe2⤵PID:1652
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C:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exeC:\Users\Admin\AppData\Local\Temp\Nghgisxtb.exe2⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2320