Analysis
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max time kernel
139s -
max time network
142s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
24-01-2023 16:16
Static task
static1
Behavioral task
behavioral1
Sample
4DA4E24086338BD0451BEC5230D9CA86.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
4DA4E24086338BD0451BEC5230D9CA86.exe
Resource
win10v2004-20221111-en
General
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Target
4DA4E24086338BD0451BEC5230D9CA86.exe
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Size
1.0MB
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MD5
4da4e24086338bd0451bec5230d9ca86
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SHA1
7fc81b5f70e3d7af4a9d55cdc38afb0cfdec8158
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SHA256
c76f6e44390f63e0a43bddef270f959c31899c65b93f139a0efbd2f2e625b1a8
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SHA512
628077dd26bd8a6bfdb1333095063796079a85aff8c90caac70be770f662fa7fa436bbae19610b8f25caaddc34024eb98f051e269bfbc5d85e8bf840a5790e79
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SSDEEP
24576:gRZVFDDpos7pkagvZTuGY8IyS0CaLF7Od+PGstTIVtfO:KZVJ6s9kagz9IySH+e2TIVtfO
Malware Config
Extracted
Protocol: smtp- Host:
smtp.gmail.com - Port:
587 - Username:
mrssussydominic@gmail.com - Password:
nnaemeka12
Signatures
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Executes dropped EXE 1 IoCs
Processes:
Windows Update.exepid process 1760 Windows Update.exe -
Deletes itself 1 IoCs
Processes:
Windows Update.exepid process 1760 Windows Update.exe -
Loads dropped DLL 1 IoCs
Processes:
4DA4E24086338BD0451BEC5230D9CA86.exepid process 968 4DA4E24086338BD0451BEC5230D9CA86.exe -
Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
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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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Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
Processes:
vbc.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
Windows Update.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" Windows Update.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 3 whatismyipaddress.com 5 whatismyipaddress.com 6 whatismyipaddress.com -
Suspicious use of SetThreadContext 2 IoCs
Processes:
Windows Update.exedescription pid process target process PID 1760 set thread context of 1916 1760 Windows Update.exe vbc.exe PID 1760 set thread context of 1332 1760 Windows Update.exe vbc.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 2 IoCs
Processes:
rundll32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_Classes\Local Settings rundll32.exe Key created \REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache rundll32.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
Windows Update.exepid process 1760 Windows Update.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
Windows Update.exevbc.exevbc.exedescription pid process Token: SeDebugPrivilege 1760 Windows Update.exe Token: SeDebugPrivilege 1916 vbc.exe Token: SeDebugPrivilege 1332 vbc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
Windows Update.exepid process 1760 Windows Update.exe -
Suspicious use of WriteProcessMemory 27 IoCs
Processes:
4DA4E24086338BD0451BEC5230D9CA86.exeWindows Update.exedescription pid process target process PID 968 wrote to memory of 1760 968 4DA4E24086338BD0451BEC5230D9CA86.exe Windows Update.exe PID 968 wrote to memory of 1760 968 4DA4E24086338BD0451BEC5230D9CA86.exe Windows Update.exe PID 968 wrote to memory of 1760 968 4DA4E24086338BD0451BEC5230D9CA86.exe Windows Update.exe PID 968 wrote to memory of 1760 968 4DA4E24086338BD0451BEC5230D9CA86.exe Windows Update.exe PID 968 wrote to memory of 1760 968 4DA4E24086338BD0451BEC5230D9CA86.exe Windows Update.exe PID 968 wrote to memory of 1760 968 4DA4E24086338BD0451BEC5230D9CA86.exe Windows Update.exe PID 968 wrote to memory of 1760 968 4DA4E24086338BD0451BEC5230D9CA86.exe Windows Update.exe PID 1760 wrote to memory of 1916 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1916 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1916 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1916 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1916 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1916 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1916 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1916 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1916 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1916 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1332 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1332 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1332 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1332 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1332 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1332 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1332 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1332 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1332 1760 Windows Update.exe vbc.exe PID 1760 wrote to memory of 1332 1760 Windows Update.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\4DA4E24086338BD0451BEC5230D9CA86.exe"C:\Users\Admin\AppData\Local\Temp\4DA4E24086338BD0451BEC5230D9CA86.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"2⤵
- Executes dropped EXE
- Deletes itself
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" -f "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"3⤵
- Accesses Microsoft Outlook accounts
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" -f "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\TraceMount.vssm1⤵
- Modifies registry class
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\SysInfo.txtFilesize
70B
MD59deb9b917bca025e0714a67ddfc6824e
SHA1cef7c28db706da3722c8a4dc6b787ad987dfb078
SHA256d2fbd62330d86708e882d296dcbe9b1eafcc838ac3be3b2568c14f41e3eaf4e3
SHA512c8cad384a29a8c67a59ea336a17399369ca9aaecb1f37d713a1d11915dbfe616d25ed2d776727b0d5af3b147bfcbeb7cb395bcfc2e00e5378c3a0012ef22bc2b
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C:\Users\Admin\AppData\Local\Temp\holdermail.txtFilesize
327B
MD51265c5140a2f68b05b92aa1a25a2abb6
SHA1627a660e9d2a41c8c4a662ca44fdb68a1356bc82
SHA256694bae0c1ebf6f8eeb8d902b1bfad57ed9a42dea6d3e327a0137a1c9f4f0c6b9
SHA512ad6a1dd57ec84459f28926d07e25f2c4f49dc67ff95b8400e85c3bcb8eccc471dbac5e2b1a2758fb563866ecacc2fae4657dfb85197fb4cd2547eef334b8a216
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C:\Users\Admin\AppData\Local\Temp\holdermail.txtFilesize
329B
MD5f8ddf0fe04f214d64c3e5094ed622858
SHA1245a91a1c968c45820fbbb319c1bcfc98b01b04e
SHA256f73d76c930aa76b78390a50ee72b9169c7064b9e1256de76ab9ffb43bca8f5d3
SHA512e6385a3d47f8969f2079ae28a4e2753c2da60e37601ebd15049e21f1490e7a1ec760a3cc6c8b75a8049aa8a08735a9f24187d7ad13c6ac8d4a5510dc88718900
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C:\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
1.0MB
MD54da4e24086338bd0451bec5230d9ca86
SHA17fc81b5f70e3d7af4a9d55cdc38afb0cfdec8158
SHA256c76f6e44390f63e0a43bddef270f959c31899c65b93f139a0efbd2f2e625b1a8
SHA512628077dd26bd8a6bfdb1333095063796079a85aff8c90caac70be770f662fa7fa436bbae19610b8f25caaddc34024eb98f051e269bfbc5d85e8bf840a5790e79
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C:\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
1.0MB
MD54da4e24086338bd0451bec5230d9ca86
SHA17fc81b5f70e3d7af4a9d55cdc38afb0cfdec8158
SHA256c76f6e44390f63e0a43bddef270f959c31899c65b93f139a0efbd2f2e625b1a8
SHA512628077dd26bd8a6bfdb1333095063796079a85aff8c90caac70be770f662fa7fa436bbae19610b8f25caaddc34024eb98f051e269bfbc5d85e8bf840a5790e79
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\Users\Admin\AppData\Roaming\Windows Update.exeFilesize
1.0MB
MD54da4e24086338bd0451bec5230d9ca86
SHA17fc81b5f70e3d7af4a9d55cdc38afb0cfdec8158
SHA256c76f6e44390f63e0a43bddef270f959c31899c65b93f139a0efbd2f2e625b1a8
SHA512628077dd26bd8a6bfdb1333095063796079a85aff8c90caac70be770f662fa7fa436bbae19610b8f25caaddc34024eb98f051e269bfbc5d85e8bf840a5790e79
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memory/968-55-0x0000000074840000-0x0000000074DEB000-memory.dmpFilesize
5.7MB
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memory/968-61-0x0000000074840000-0x0000000074DEB000-memory.dmpFilesize
5.7MB
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memory/968-54-0x0000000075501000-0x0000000075503000-memory.dmpFilesize
8KB
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memory/1332-85-0x0000000000400000-0x000000000048B000-memory.dmpFilesize
556KB
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memory/1332-91-0x0000000000460E2D-mapping.dmp
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memory/1332-96-0x0000000000400000-0x000000000048B000-memory.dmpFilesize
556KB
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memory/1332-94-0x0000000000400000-0x000000000048B000-memory.dmpFilesize
556KB
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memory/1332-90-0x0000000000400000-0x000000000048B000-memory.dmpFilesize
556KB
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memory/1332-89-0x0000000000400000-0x000000000048B000-memory.dmpFilesize
556KB
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memory/1332-87-0x0000000000400000-0x000000000048B000-memory.dmpFilesize
556KB
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memory/1332-83-0x0000000000400000-0x000000000048B000-memory.dmpFilesize
556KB
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memory/1332-82-0x0000000000400000-0x000000000048B000-memory.dmpFilesize
556KB
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memory/1760-57-0x0000000000000000-mapping.dmp
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memory/1760-62-0x0000000074840000-0x0000000074DEB000-memory.dmpFilesize
5.7MB
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memory/1760-97-0x0000000000316000-0x0000000000327000-memory.dmpFilesize
68KB
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memory/1760-79-0x0000000074840000-0x0000000074DEB000-memory.dmpFilesize
5.7MB
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memory/1760-71-0x0000000000316000-0x0000000000327000-memory.dmpFilesize
68KB
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memory/1916-73-0x0000000000400000-0x000000000048E000-memory.dmpFilesize
568KB
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memory/1916-81-0x0000000000400000-0x000000000048E000-memory.dmpFilesize
568KB
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memory/1916-74-0x0000000000462B6D-mapping.dmp
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memory/1916-77-0x0000000000400000-0x000000000048E000-memory.dmpFilesize
568KB
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memory/1916-72-0x0000000000400000-0x000000000048E000-memory.dmpFilesize
568KB
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memory/1916-65-0x0000000000400000-0x000000000048E000-memory.dmpFilesize
568KB
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memory/1916-69-0x0000000000400000-0x000000000048E000-memory.dmpFilesize
568KB
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memory/1916-78-0x0000000000400000-0x000000000048E000-memory.dmpFilesize
568KB
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memory/1916-67-0x0000000000400000-0x000000000048E000-memory.dmpFilesize
568KB
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memory/1916-64-0x0000000000400000-0x000000000048E000-memory.dmpFilesize
568KB
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memory/2044-98-0x000007FEFBD21000-0x000007FEFBD23000-memory.dmpFilesize
8KB