Analysis
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max time kernel
121s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20230831-en -
resource tags
arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system -
submitted
05/10/2023, 09:25
Static task
static1
Behavioral task
behavioral1
Sample
HTML.exe
Resource
win7-20230831-en
Behavioral task
behavioral2
Sample
HTML.exe
Resource
win10v2004-20230915-en
General
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Target
HTML.exe
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Size
581KB
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MD5
0c86e968796f80b0e5c091b3270ce88b
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SHA1
4b8cac21c67d776a6f1e834191b6091236248e73
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SHA256
cef638c80808c085c6ad3382a2c0d1f664a0cba324a178fa2acdd572a193eac5
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SHA512
fe13ad7fd9ffec5fead6a5e4b75208f9ed2bf9edf70efbc324d34711f1b60e9feabd34a3f74f00a9b6b4f160e524eff9f4f3e795f9ab5b867d908216ee3e31d4
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SSDEEP
12288:8awpemS7q1GV1ysvF5kJEqD1DqbQpkMwuINF9ypvrab3ZTsGD/si:8awpemS7qM6sd6JdpPpHvlabJTe
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
bengalleather.com - Port:
587 - Username:
[email protected] - Password:
kz@m@n04 - 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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 HTML.exe Key opened \REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 HTML.exe Key opened \REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 HTML.exe -
Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 4 api.ipify.org 5 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2068 set thread context of 2944 2068 HTML.exe 32 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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 2988 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 3 IoCs
pid Process 2068 HTML.exe 2944 HTML.exe 2944 HTML.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2068 HTML.exe Token: SeDebugPrivilege 2944 HTML.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 2068 wrote to memory of 2988 2068 HTML.exe 30 PID 2068 wrote to memory of 2988 2068 HTML.exe 30 PID 2068 wrote to memory of 2988 2068 HTML.exe 30 PID 2068 wrote to memory of 2988 2068 HTML.exe 30 PID 2068 wrote to memory of 2944 2068 HTML.exe 32 PID 2068 wrote to memory of 2944 2068 HTML.exe 32 PID 2068 wrote to memory of 2944 2068 HTML.exe 32 PID 2068 wrote to memory of 2944 2068 HTML.exe 32 PID 2068 wrote to memory of 2944 2068 HTML.exe 32 PID 2068 wrote to memory of 2944 2068 HTML.exe 32 PID 2068 wrote to memory of 2944 2068 HTML.exe 32 PID 2068 wrote to memory of 2944 2068 HTML.exe 32 PID 2068 wrote to memory of 2944 2068 HTML.exe 32 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 HTML.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3185155662-718608226-894467740-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 HTML.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\HTML.exe"C:\Users\Admin\AppData\Local\Temp\HTML.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2068 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PaJmBrIB" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3D8D.tmp"2⤵
- Creates scheduled task(s)
PID:2988
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C:\Users\Admin\AppData\Local\Temp\HTML.exe"{path}"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2944
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1KB
MD5a3472aad8a5fbf93ea1fb78eba120d28
SHA1a2fe34dd8a1970680d2d94867fa240faeb49d4c1
SHA256bcf12ffd0aad6ac97d2bbacdd1e356d799db31b16f04f555fb249fc9f11df285
SHA51223098b0f1c365710a8a1027297e037dbdb912c7c60fccfe1ecc7468eda330244b9ca903ec0032a94629598b043eeff5dbdda9080f1c630b83acb62ca8ccae134