Analysis
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max time kernel
115s -
max time network
120s -
platform
windows7_x64 -
resource
win7 -
submitted
16/07/2020, 13:43
Static task
static1
Behavioral task
behavioral1
Sample
FAX RECEIPT_SO 151-154.exe
Resource
win7
Behavioral task
behavioral2
Sample
FAX RECEIPT_SO 151-154.exe
Resource
win10v200430
General
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Target
FAX RECEIPT_SO 151-154.exe
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Size
734KB
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MD5
6f9ce67a343b9f8bed90957132be043c
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SHA1
c9dc45ecdc2fb58e14be58e18b2bb864703d8be3
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SHA256
4f22002fa8e6ac42be9455b9e786da31fd301db9392fb387a0948f6e212e02a0
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SHA512
93224fe206a7f82df6881258600c1f6895e822d87a92fc54dc12d596bfdb523c8a201b26596d3c4b2adbda7d4abfebccf674c534f6602186b9e8c7b2325e7d24
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.gci-nit.com - Port:
587 - Username:
[email protected] - Password:
oDBYDVK2
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 4 IoCs
resource yara_rule behavioral1/memory/732-4-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/732-5-0x000000000044761E-mapping.dmp family_agenttesla behavioral1/memory/732-7-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/732-8-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
Executes dropped EXE 1 IoCs
pid Process 732 InstallUtil.exe -
Loads dropped DLL 1 IoCs
pid Process 608 FAX RECEIPT_SO 151-154.exe -
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
description pid Process procid_target PID 608 set thread context of 732 608 FAX RECEIPT_SO 151-154.exe 24 -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 608 FAX RECEIPT_SO 151-154.exe 608 FAX RECEIPT_SO 151-154.exe 608 FAX RECEIPT_SO 151-154.exe 732 InstallUtil.exe 732 InstallUtil.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 608 FAX RECEIPT_SO 151-154.exe Token: SeDebugPrivilege 732 InstallUtil.exe -
Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24 PID 608 wrote to memory of 732 608 FAX RECEIPT_SO 151-154.exe 24
Processes
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C:\Users\Admin\AppData\Local\Temp\FAX RECEIPT_SO 151-154.exe"C:\Users\Admin\AppData\Local\Temp\FAX RECEIPT_SO 151-154.exe"1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:608 -
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:732
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