Analysis
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max time kernel
141s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 02:44
Static task
static1
Behavioral task
behavioral1
Sample
TT- Swift Copy.pdf.exe
Resource
win7-20220414-en
General
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Target
TT- Swift Copy.pdf.exe
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Size
411KB
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MD5
cff3e5019bd36f4a7596fe229c9e6a2f
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SHA1
b7d7e42f24cb3c3ef10497a64398a888790dcbb0
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SHA256
9950693e7a2ed5a37008ea3a7c2a185132af4f3fedfbbba41fb03939dadb8044
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SHA512
67e13ab5417c8751b956fd429b13fe11291d0263699c4e8f253b7ab4e266b4b2afb1411ed0907b69d84c549d03c7f5398ff885d864899d743d200f7a222b5031
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.hotel71.com.bd - Port:
587 - Username:
[email protected] - Password:
9+^va&phP1v9
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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CoreEntity .NET Packer 1 IoCs
A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.
Processes:
resource yara_rule behavioral1/memory/1844-56-0x00000000003F0000-0x00000000003F8000-memory.dmp coreentity -
AgentTesla Payload 6 IoCs
Processes:
resource yara_rule behavioral1/memory/1504-62-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla behavioral1/memory/1504-61-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla behavioral1/memory/1504-63-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla behavioral1/memory/1504-64-0x000000000044A9CE-mapping.dmp family_agenttesla behavioral1/memory/1504-66-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla behavioral1/memory/1504-68-0x0000000000400000-0x0000000000450000-memory.dmp family_agenttesla -
ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
Processes:
resource yara_rule behavioral1/memory/1844-57-0x0000000000B80000-0x0000000000BD6000-memory.dmp rezer0 -
Disables Task Manager via registry modification
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Drops file in Drivers directory 1 IoCs
Processes:
RegSvcs.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
TT- Swift Copy.pdf.exedescription pid process target process PID 1844 set thread context of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe -
Modifies registry key 1 TTPs 1 IoCs
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Suspicious behavior: EnumeratesProcesses 3 IoCs
Processes:
TT- Swift Copy.pdf.exeRegSvcs.exepid process 1844 TT- Swift Copy.pdf.exe 1504 RegSvcs.exe 1504 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
TT- Swift Copy.pdf.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 1844 TT- Swift Copy.pdf.exe Token: SeDebugPrivilege 1504 RegSvcs.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
TT- Swift Copy.pdf.exeRegSvcs.exedescription pid process target process PID 1844 wrote to memory of 1508 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1508 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1508 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1508 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1508 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1508 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1508 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1844 wrote to memory of 1504 1844 TT- Swift Copy.pdf.exe RegSvcs.exe PID 1504 wrote to memory of 1264 1504 RegSvcs.exe REG.exe PID 1504 wrote to memory of 1264 1504 RegSvcs.exe REG.exe PID 1504 wrote to memory of 1264 1504 RegSvcs.exe REG.exe PID 1504 wrote to memory of 1264 1504 RegSvcs.exe REG.exe PID 1504 wrote to memory of 1080 1504 RegSvcs.exe netsh.exe PID 1504 wrote to memory of 1080 1504 RegSvcs.exe netsh.exe PID 1504 wrote to memory of 1080 1504 RegSvcs.exe netsh.exe PID 1504 wrote to memory of 1080 1504 RegSvcs.exe netsh.exe -
outlook_office_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
outlook_win_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\TT- Swift Copy.pdf.exe"C:\Users\Admin\AppData\Local\Temp\TT- Swift Copy.pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
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C:\Windows\SysWOW64\REG.exeREG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f3⤵
- Modifies registry key
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C:\Windows\SysWOW64\netsh.exe"netsh" wlan show profile3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/1080-71-0x0000000000000000-mapping.dmp
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memory/1264-70-0x0000000000000000-mapping.dmp
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memory/1504-64-0x000000000044A9CE-mapping.dmp
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memory/1504-58-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1504-59-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1504-62-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1504-61-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1504-63-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1504-66-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1504-68-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/1844-57-0x0000000000B80000-0x0000000000BD6000-memory.dmpFilesize
344KB
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memory/1844-54-0x0000000001300000-0x000000000136E000-memory.dmpFilesize
440KB
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memory/1844-56-0x00000000003F0000-0x00000000003F8000-memory.dmpFilesize
32KB
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memory/1844-55-0x0000000075261000-0x0000000075263000-memory.dmpFilesize
8KB