Analysis
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max time kernel
194s -
max time network
182s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 10:38
Static task
static1
Behavioral task
behavioral1
Sample
a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe
Resource
win7-20221111-en
General
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Target
a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe
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Size
600KB
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MD5
79011ec1d71858487b590d9f7e8002bd
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SHA1
9cf823e735d40dcace6ab0fec9e8bf7ae13e6313
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SHA256
a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479
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SHA512
829f8c6f24c7f4d2e99ddb2de6d9c57bf26c4179810e9fc93a6d7b0a35626d3d0f1c8339c0cb4f805f7ac055d262fed9fe82b2caf699c5fdeadaff5c7faf3945
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SSDEEP
12288:RGsHeZhOtCSoMywf6wRIFJ8rz2TCdyKpsiIx2IN:RGXLSUxP9KB
Malware Config
Extracted
Protocol: smtp- Host:
smtp.yandex.ru - Port:
587 - Username:
markson.james1@yandex.ru - Password:
uchenna12345
Signatures
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NirSoft MailPassView 5 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral2/memory/2268-134-0x0000000000400000-0x0000000000484000-memory.dmp MailPassView behavioral2/memory/2300-138-0x0000000000000000-mapping.dmp MailPassView behavioral2/memory/2300-139-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/2300-141-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/2300-142-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 6 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral2/memory/2268-134-0x0000000000400000-0x0000000000484000-memory.dmp WebBrowserPassView behavioral2/memory/4864-143-0x0000000000000000-mapping.dmp WebBrowserPassView behavioral2/memory/4864-144-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/4864-146-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/4864-147-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/4864-148-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 10 IoCs
Processes:
resource yara_rule behavioral2/memory/2268-134-0x0000000000400000-0x0000000000484000-memory.dmp Nirsoft behavioral2/memory/2300-138-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/2300-139-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/2300-141-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/2300-142-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/4864-143-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/4864-144-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/4864-146-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/4864-147-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/4864-148-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Drops startup file 1 IoCs
Processes:
a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\y94gD8hIi9Fw.lnk a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe -
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-1-5-21-4246620582-653642754-1174164128-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 33 whatismyipaddress.com -
Suspicious use of SetThreadContext 3 IoCs
Processes:
a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exeRegAsm.exedescription pid process target process PID 1756 set thread context of 2268 1756 a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe RegAsm.exe PID 2268 set thread context of 2300 2268 RegAsm.exe vbc.exe PID 2268 set thread context of 4864 2268 RegAsm.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 3 IoCs
Processes:
RegAsm.exevbc.exepid process 2268 RegAsm.exe 4864 vbc.exe 4864 vbc.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
RegAsm.exedescription pid process Token: SeDebugPrivilege 2268 RegAsm.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
RegAsm.exepid process 2268 RegAsm.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exeRegAsm.exedescription pid process target process PID 1756 wrote to memory of 2268 1756 a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe RegAsm.exe PID 1756 wrote to memory of 2268 1756 a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe RegAsm.exe PID 1756 wrote to memory of 2268 1756 a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe RegAsm.exe PID 1756 wrote to memory of 2268 1756 a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe RegAsm.exe PID 1756 wrote to memory of 2268 1756 a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe RegAsm.exe PID 1756 wrote to memory of 2268 1756 a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe RegAsm.exe PID 1756 wrote to memory of 2268 1756 a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe RegAsm.exe PID 1756 wrote to memory of 2268 1756 a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe RegAsm.exe PID 2268 wrote to memory of 2300 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 2300 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 2300 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 2300 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 2300 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 2300 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 2300 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 2300 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 2300 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 4864 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 4864 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 4864 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 4864 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 4864 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 4864 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 4864 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 4864 2268 RegAsm.exe vbc.exe PID 2268 wrote to memory of 4864 2268 RegAsm.exe vbc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe"C:\Users\Admin\AppData\Local\Temp\a1eb1052f8adb9fcdeba8c950663c6eaf63eb8a7fb5d61b4377d1389b7256479.exe"1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"2⤵
- 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.exeC:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"3⤵
- Accesses Microsoft Outlook accounts
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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"3⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\holderwb.txtFilesize
3KB
MD5f94dc819ca773f1e3cb27abbc9e7fa27
SHA19a7700efadc5ea09ab288544ef1e3cd876255086
SHA256a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92
SHA51272a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196
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memory/1756-132-0x0000000074A60000-0x0000000075011000-memory.dmpFilesize
5.7MB
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memory/1756-135-0x0000000074A60000-0x0000000075011000-memory.dmpFilesize
5.7MB
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memory/2268-133-0x0000000000000000-mapping.dmp
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memory/2268-134-0x0000000000400000-0x0000000000484000-memory.dmpFilesize
528KB
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memory/2268-136-0x0000000074A60000-0x0000000075011000-memory.dmpFilesize
5.7MB
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memory/2268-137-0x0000000074A60000-0x0000000075011000-memory.dmpFilesize
5.7MB
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memory/2300-141-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/2300-139-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/2300-142-0x0000000000400000-0x000000000041B000-memory.dmpFilesize
108KB
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memory/2300-138-0x0000000000000000-mapping.dmp
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memory/4864-143-0x0000000000000000-mapping.dmp
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memory/4864-144-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/4864-146-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/4864-147-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB
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memory/4864-148-0x0000000000400000-0x0000000000458000-memory.dmpFilesize
352KB