Analysis
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max time kernel
130s -
max time network
137s -
platform
windows7_x64 -
resource
win7 -
submitted
09/07/2020, 17:30
Static task
static1
Behavioral task
behavioral1
Sample
RFQ 2O8372929_PDF.exe
Resource
win7
Behavioral task
behavioral2
Sample
RFQ 2O8372929_PDF.exe
Resource
win10v200430
General
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Target
RFQ 2O8372929_PDF.exe
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Size
553KB
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MD5
4239c1115b482a8cf2d015480e6e54b0
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SHA1
9c85da548aaaef07e9a4f0f00534a869b8e60bd1
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SHA256
e0946b05635011f81ce5534b1d49bec2dd2cb184af87c7ebea2f55d91e0a07cf
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SHA512
d1db3625db842984c2aba9266590e0dcaa1b3946fb0df4173f041b4d1407e952d65d347f727cc4a0f4e5ccf9467e7142395655ba9f615d6e4b8f4e92fb6458d3
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
blessing2020
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/1644-4-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1644-5-0x000000000044690E-mapping.dmp family_agenttesla behavioral1/memory/1644-6-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1644-7-0x0000000000400000-0x000000000044C000-memory.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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Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1460 set thread context of 1644 1460 RFQ 2O8372929_PDF.exe 26 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 1012 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1644 RFQ 2O8372929_PDF.exe 1644 RFQ 2O8372929_PDF.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1644 RFQ 2O8372929_PDF.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 1460 wrote to memory of 1012 1460 RFQ 2O8372929_PDF.exe 24 PID 1460 wrote to memory of 1012 1460 RFQ 2O8372929_PDF.exe 24 PID 1460 wrote to memory of 1012 1460 RFQ 2O8372929_PDF.exe 24 PID 1460 wrote to memory of 1012 1460 RFQ 2O8372929_PDF.exe 24 PID 1460 wrote to memory of 1644 1460 RFQ 2O8372929_PDF.exe 26 PID 1460 wrote to memory of 1644 1460 RFQ 2O8372929_PDF.exe 26 PID 1460 wrote to memory of 1644 1460 RFQ 2O8372929_PDF.exe 26 PID 1460 wrote to memory of 1644 1460 RFQ 2O8372929_PDF.exe 26 PID 1460 wrote to memory of 1644 1460 RFQ 2O8372929_PDF.exe 26 PID 1460 wrote to memory of 1644 1460 RFQ 2O8372929_PDF.exe 26 PID 1460 wrote to memory of 1644 1460 RFQ 2O8372929_PDF.exe 26 PID 1460 wrote to memory of 1644 1460 RFQ 2O8372929_PDF.exe 26 PID 1460 wrote to memory of 1644 1460 RFQ 2O8372929_PDF.exe 26
Processes
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C:\Users\Admin\AppData\Local\Temp\RFQ 2O8372929_PDF.exe"C:\Users\Admin\AppData\Local\Temp\RFQ 2O8372929_PDF.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1460 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\WRBGCktxQn" /XML "C:\Users\Admin\AppData\Local\Temp\tmp956B.tmp"2⤵
- Creates scheduled task(s)
PID:1012
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C:\Users\Admin\AppData\Local\Temp\RFQ 2O8372929_PDF.exe"{path}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1644
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