Analysis
- max time kernel
148s - max time network
121s - platform
windows10_x64 - resource
win10v20210408 - submitted
12/10/2021, 16:28
Static task
static1
Behavioral task
behavioral1
Sample
21ITQXL080104122T7.exe
Resource
win7-en-20210920
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
21ITQXL080104122T7.exe
Resource
win10v20210408
0 signatures
0 seconds
General
- Target 21ITQXL080104122T7.exe
- Size 583KB
- Sample211012-tynblacgd6
- SHA256 66ee4b53abb08b5133bc88f5fa911e091420bd47744384ec9d0d56a408bebea7
- MD5 c6f96119575eca1f86d2013ed7b66e95
- SHA1 35894722c984f00821a53dfb728bf808f22f0f05
- SHA512 4a434bb510bceb815de7ea84431c0454a38e6f3b9daba69cf406450ccdec41c24afd409d8090321c95db894d38a3fb670ca1e702b26798431857e8a9f6e22945
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
-
agenttesla
C2
-
https://api.telegram.org/bot1335107831:AAGZPoo67JukV78LJI16BeQqy3whx-zI59g/sendDocument
Signatures
- AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
- AgentTesla Payload 3 IoCs
resource yara_rule behavioral2/memory/2256-123-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral2/memory/2256-124-0x000000000043782E-mapping.dmp family_agenttesla behavioral2/memory/2256-129-0x0000000005010000-0x000000000550E000-memory.dmp family_agenttesla - Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe - Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\yeJHa = "C:\\Users\\Admin\\AppData\\Roaming\\yeJHa\\yeJHa.exe" RegSvcs.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 664 set thread context of 2256 664 21ITQXL080104122T7.exe 76 - Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 664 21ITQXL080104122T7.exe 664 21ITQXL080104122T7.exe 2256 RegSvcs.exe 2256 RegSvcs.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 664 21ITQXL080104122T7.exe Token: SeDebugPrivilege 2256 RegSvcs.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 664 wrote to memory of 2256 664 21ITQXL080104122T7.exe 76 PID 664 wrote to memory of 2256 664 21ITQXL080104122T7.exe 76 PID 664 wrote to memory of 2256 664 21ITQXL080104122T7.exe 76 PID 664 wrote to memory of 2256 664 21ITQXL080104122T7.exe 76 PID 664 wrote to memory of 2256 664 21ITQXL080104122T7.exe 76 PID 664 wrote to memory of 2256 664 21ITQXL080104122T7.exe 76 PID 664 wrote to memory of 2256 664 21ITQXL080104122T7.exe 76 PID 664 wrote to memory of 2256 664 21ITQXL080104122T7.exe 76 - outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe - outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\21ITQXL080104122T7.exe"C:\Users\Admin\AppData\Local\Temp\21ITQXL080104122T7.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:664 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2256
-