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Analysis
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max time kernel
133s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
08/01/2024, 05:34
Static task
static1
Behavioral task
behavioral1
Sample
4a9211a0d444f60e0d9ad26dce8c270b.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
4a9211a0d444f60e0d9ad26dce8c270b.exe
Resource
win10v2004-20231222-en
General
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Target
4a9211a0d444f60e0d9ad26dce8c270b.exe
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Size
1.1MB
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MD5
4a9211a0d444f60e0d9ad26dce8c270b
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SHA1
b90ae0e6b1a0303e41ab52544ba5a7f484a659ea
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SHA256
3bd8e05a0c93d1a5b6b0fb855904f2b1c1ac52e8f78727a0b6045823a5bfd5c9
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SHA512
733491734c8c0ab7254f2813dcd5d38046336a1999fa256db49a8ab4c1cffe2fa525d222ef0bc34896f9e10b9e085b6cef98f330308c139c227b271e61915e14
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SSDEEP
24576:C5NjLCxr/d3FK64JARnhRsb+gMCduSGfieQr:CD+1K64JQRsbCCduSGHQr
Malware Config
Extracted
agenttesla
https://api.telegram.org/bot1573682282:AAEqJZjS75KdrM3hW3WnSL2zr2o3a3lESbk/sendDocument
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla payload 6 IoCs
resource yara_rule behavioral1/memory/2612-27-0x00000000005A0000-0x00000000005E0000-memory.dmp family_agenttesla behavioral1/memory/2612-24-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/2612-22-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/2612-20-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/2612-17-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla behavioral1/memory/2612-16-0x0000000000400000-0x000000000043C000-memory.dmp family_agenttesla -
CustAttr .NET packer 1 IoCs
Detects CustAttr .NET packer in memory.
resource yara_rule behavioral1/memory/824-3-0x00000000005B0000-0x00000000005C2000-memory.dmp CustAttr -
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-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4a9211a0d444f60e0d9ad26dce8c270b.exe Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4a9211a0d444f60e0d9ad26dce8c270b.exe Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4a9211a0d444f60e0d9ad26dce8c270b.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 824 set thread context of 2612 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 31 -
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 2292 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2612 4a9211a0d444f60e0d9ad26dce8c270b.exe 2612 4a9211a0d444f60e0d9ad26dce8c270b.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 2612 4a9211a0d444f60e0d9ad26dce8c270b.exe -
Suspicious use of WriteProcessMemory 13 IoCs
description pid Process procid_target PID 824 wrote to memory of 2292 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 32 PID 824 wrote to memory of 2292 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 32 PID 824 wrote to memory of 2292 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 32 PID 824 wrote to memory of 2292 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 32 PID 824 wrote to memory of 2612 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 31 PID 824 wrote to memory of 2612 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 31 PID 824 wrote to memory of 2612 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 31 PID 824 wrote to memory of 2612 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 31 PID 824 wrote to memory of 2612 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 31 PID 824 wrote to memory of 2612 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 31 PID 824 wrote to memory of 2612 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 31 PID 824 wrote to memory of 2612 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 31 PID 824 wrote to memory of 2612 824 4a9211a0d444f60e0d9ad26dce8c270b.exe 31 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4a9211a0d444f60e0d9ad26dce8c270b.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 4a9211a0d444f60e0d9ad26dce8c270b.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4a9211a0d444f60e0d9ad26dce8c270b.exe"C:\Users\Admin\AppData\Local\Temp\4a9211a0d444f60e0d9ad26dce8c270b.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:824 -
C:\Users\Admin\AppData\Local\Temp\4a9211a0d444f60e0d9ad26dce8c270b.exe"C:\Users\Admin\AppData\Local\Temp\4a9211a0d444f60e0d9ad26dce8c270b.exe"2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2612
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mVdnYsF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC716.tmp"2⤵
- Creates scheduled task(s)
PID:2292
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