Analysis
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max time kernel
147s -
max time network
131s -
platform
windows10-2004_x64 -
resource
win10v2004-20220901-en -
resource tags
arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system -
submitted
22-11-2022 19:38
Static task
static1
Behavioral task
behavioral1
Sample
231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe
Resource
win7-20221111-en
General
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Target
231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe
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Size
440KB
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MD5
c1fda49e1bd80bd2a0578b70612d20b6
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SHA1
4d8aabdd3e077fac524e47d4d51d6a355dcc643e
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SHA256
231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1
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SHA512
d9428687eb60d86f9fb902581528ffed0f37f87ebd44396def4b1e69af4730d07409509472dec2df0de186eecf98cd741e7e5293f5168513d5e333110d3bb85e
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SSDEEP
12288:ZqCPKZMtxP0olMB3aC53GvNuovRF9w46:ZbPiaN0oSlT53GFbRF
Malware Config
Signatures
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NirSoft MailPassView 5 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral2/memory/4532-135-0x0000000000400000-0x0000000000484000-memory.dmp MailPassView behavioral2/memory/3912-152-0x0000000000000000-mapping.dmp MailPassView behavioral2/memory/3912-153-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/3912-155-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/3912-156-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 6 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral2/memory/4532-135-0x0000000000400000-0x0000000000484000-memory.dmp WebBrowserPassView behavioral2/memory/3996-159-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3996-158-0x0000000000000000-mapping.dmp WebBrowserPassView behavioral2/memory/3996-161-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3996-162-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/3996-164-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 10 IoCs
Processes:
resource yara_rule behavioral2/memory/4532-135-0x0000000000400000-0x0000000000484000-memory.dmp Nirsoft behavioral2/memory/3912-152-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/3912-153-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3912-155-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3912-156-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/3996-159-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3996-158-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/3996-161-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3996-162-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/3996-164-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Executes dropped EXE 2 IoCs
Processes:
Windows Update.exeWindows Update.exepid process 5016 Windows Update.exe 312 Windows Update.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe -
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-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.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.
Processes:
flow ioc 23 whatismyipaddress.com 25 whatismyipaddress.com -
Suspicious use of SetThreadContext 4 IoCs
Processes:
231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exeWindows Update.exeWindows Update.exedescription pid process target process PID 3544 set thread context of 4532 3544 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe PID 5016 set thread context of 312 5016 Windows Update.exe Windows Update.exe PID 312 set thread context of 3912 312 Windows Update.exe vbc.exe PID 312 set thread context of 3996 312 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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Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
vbc.exepid process 3996 vbc.exe 3996 vbc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
Windows Update.exedescription pid process Token: SeDebugPrivilege 312 Windows Update.exe -
Suspicious use of WriteProcessMemory 37 IoCs
Processes:
231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exeWindows Update.exeWindows Update.exedescription pid process target process PID 3544 wrote to memory of 4532 3544 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe PID 3544 wrote to memory of 4532 3544 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe PID 3544 wrote to memory of 4532 3544 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe PID 3544 wrote to memory of 4532 3544 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe PID 3544 wrote to memory of 4532 3544 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe PID 3544 wrote to memory of 4532 3544 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe PID 3544 wrote to memory of 4532 3544 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe PID 3544 wrote to memory of 4532 3544 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe PID 4532 wrote to memory of 5016 4532 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe Windows Update.exe PID 4532 wrote to memory of 5016 4532 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe Windows Update.exe PID 4532 wrote to memory of 5016 4532 231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe Windows Update.exe PID 5016 wrote to memory of 312 5016 Windows Update.exe Windows Update.exe PID 5016 wrote to memory of 312 5016 Windows Update.exe Windows Update.exe PID 5016 wrote to memory of 312 5016 Windows Update.exe Windows Update.exe PID 5016 wrote to memory of 312 5016 Windows Update.exe Windows Update.exe PID 5016 wrote to memory of 312 5016 Windows Update.exe Windows Update.exe PID 5016 wrote to memory of 312 5016 Windows Update.exe Windows Update.exe PID 5016 wrote to memory of 312 5016 Windows Update.exe Windows Update.exe PID 5016 wrote to memory of 312 5016 Windows Update.exe Windows Update.exe PID 312 wrote to memory of 3912 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3912 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3912 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3912 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3912 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3912 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3912 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3912 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3912 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3996 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3996 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3996 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3996 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3996 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3996 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3996 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3996 312 Windows Update.exe vbc.exe PID 312 wrote to memory of 3996 312 Windows Update.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe"C:\Users\Admin\AppData\Local\Temp\231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3544 -
C:\Users\Admin\AppData\Local\Temp\231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe"C:\Users\Admin\AppData\Local\Temp\231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe"2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4532 -
C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5016 -
C:\Users\Admin\AppData\Roaming\Windows Update.exe"C:\Users\Admin\AppData\Roaming\Windows Update.exe"4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:312 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"5⤵
- Accesses Microsoft Outlook accounts
PID:3912 -
C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"5⤵
- Suspicious behavior: EnumeratesProcesses
PID:3996
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1.exe.log
Filesize594B
MD5fdb26b3b547022b45cfaeee57eafd566
SHA111c6798b8a59233f404014c5e79b3363cd564b37
SHA2562707fc7f074413881b7bafca05079327b188db6005709951e7f69d39a2af97c0
SHA51244d9bb8c0f0b341690d00eda86e15a50f7f29ce9595925c1a2a7e19ad26202d10049a7a97bea278ecb7d429ad555de8edceeffff664d4b06309a9410a09bb700
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Filesize
774B
MD5fc93eb9acb036dc0adcb7e9203deae84
SHA1f6180e425e36b03252e18d9edb38c853a0546226
SHA2568da330d49f43e46c3c34a7283f168ab399a37280b490503d7e7ca8ff34eaddae
SHA5128ed8c6f1199da12f71819be099b2f129eced45e27e7bd7e1efbb07b09c7102bd31aaa9c39de85c9a583963b9331248d53d76eec0eb2b8ba7173ab0fdef25a620
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Filesize
102B
MD56fb44d97a1b79ad1c15df4891995b0e5
SHA192ef769e24a846a116d6dbffb74a23ffb30a7a1a
SHA2560744fafb27858c73155642cc01681f15cdda4bb9456ac727ec426f99e3227465
SHA512aecaf00dc70bf871307cac9abbff4c0b187ae5d2ae74444d1b5baf0761f7458c138cc2d3b06db0ce45ded3db9ff65fddfe3cfc231564f6f9e02f5de476fc903b
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Filesize
3KB
MD5f94dc819ca773f1e3cb27abbc9e7fa27
SHA19a7700efadc5ea09ab288544ef1e3cd876255086
SHA256a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92
SHA51272a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196
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Filesize
440KB
MD5c1fda49e1bd80bd2a0578b70612d20b6
SHA14d8aabdd3e077fac524e47d4d51d6a355dcc643e
SHA256231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1
SHA512d9428687eb60d86f9fb902581528ffed0f37f87ebd44396def4b1e69af4730d07409509472dec2df0de186eecf98cd741e7e5293f5168513d5e333110d3bb85e
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Filesize
440KB
MD5c1fda49e1bd80bd2a0578b70612d20b6
SHA14d8aabdd3e077fac524e47d4d51d6a355dcc643e
SHA256231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1
SHA512d9428687eb60d86f9fb902581528ffed0f37f87ebd44396def4b1e69af4730d07409509472dec2df0de186eecf98cd741e7e5293f5168513d5e333110d3bb85e
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Filesize
440KB
MD5c1fda49e1bd80bd2a0578b70612d20b6
SHA14d8aabdd3e077fac524e47d4d51d6a355dcc643e
SHA256231f5a17a817ee3ae8bbd40f380a2acaf858da5cb829702d21c152146da8c9d1
SHA512d9428687eb60d86f9fb902581528ffed0f37f87ebd44396def4b1e69af4730d07409509472dec2df0de186eecf98cd741e7e5293f5168513d5e333110d3bb85e