Analysis
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max time kernel
137s -
max time network
141s -
platform
windows10-2004_x64 -
resource
win10v2004-20220718-en -
resource tags
arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system -
submitted
18-07-2022 14:19
Static task
static1
Behavioral task
behavioral1
Sample
519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb.exe
Resource
win10v2004-20220718-en
General
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Target
519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb.exe
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Size
646KB
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MD5
13b470ab4c1dde94867a567d88fdb673
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SHA1
ffd3e2e7dc16bbe5d3e5b64ecae040a924cbcdc2
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SHA256
519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb
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SHA512
74ddc6aa93a5890762e856d2bb1b74cdf2acf1609edb27b3b790ad3efdbae00104ce5640ebc6b7edae07fe3267b5b4320a4c6bcb1400dc116a07f24b8242b568
Malware Config
Signatures
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NirSoft MailPassView 5 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/4164-143-0x00000000007B0000-0x0000000000838000-memory.dmp MailPassView behavioral2/memory/4840-147-0x0000000000000000-mapping.dmp MailPassView behavioral2/memory/4840-148-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/4840-150-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView behavioral2/memory/4840-151-0x0000000000400000-0x000000000041B000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 6 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral2/memory/4164-143-0x00000000007B0000-0x0000000000838000-memory.dmp WebBrowserPassView behavioral2/memory/2020-152-0x0000000000000000-mapping.dmp WebBrowserPassView behavioral2/memory/2020-153-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/2020-155-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/2020-156-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView behavioral2/memory/2020-158-0x0000000000400000-0x0000000000458000-memory.dmp WebBrowserPassView -
Nirsoft 10 IoCs
resource yara_rule behavioral2/memory/4164-143-0x00000000007B0000-0x0000000000838000-memory.dmp Nirsoft behavioral2/memory/4840-147-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/4840-148-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/4840-150-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/4840-151-0x0000000000400000-0x000000000041B000-memory.dmp Nirsoft behavioral2/memory/2020-152-0x0000000000000000-mapping.dmp Nirsoft behavioral2/memory/2020-153-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/2020-155-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/2020-156-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft behavioral2/memory/2020-158-0x0000000000400000-0x0000000000458000-memory.dmp Nirsoft -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2783062828-828903012-4218294845-1000\Control Panel\International\Geo\Nation 519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb.exe -
Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2783062828-828903012-4218294845-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2783062828-828903012-4218294845-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Users\\Admin\\AppData\\Roaming\\WindowsUpdate.exe" RegAsm.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.
flow ioc 11 whatismyipaddress.com 13 whatismyipaddress.com -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1160 set thread context of 4164 1160 installutil.exe 81 PID 4164 set thread context of 4840 4164 RegAsm.exe 83 PID 4164 set thread context of 2020 4164 RegAsm.exe 84 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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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 2284 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 1160 installutil.exe 1160 installutil.exe 2020 vbc.exe 2020 vbc.exe 4164 RegAsm.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1160 installutil.exe Token: SeDebugPrivilege 4164 RegAsm.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 4164 RegAsm.exe -
Suspicious use of WriteProcessMemory 32 IoCs
description pid Process procid_target PID 1120 wrote to memory of 1160 1120 519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb.exe 78 PID 1120 wrote to memory of 1160 1120 519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb.exe 78 PID 1120 wrote to memory of 1160 1120 519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb.exe 78 PID 1160 wrote to memory of 2284 1160 installutil.exe 79 PID 1160 wrote to memory of 2284 1160 installutil.exe 79 PID 1160 wrote to memory of 2284 1160 installutil.exe 79 PID 1160 wrote to memory of 4164 1160 installutil.exe 81 PID 1160 wrote to memory of 4164 1160 installutil.exe 81 PID 1160 wrote to memory of 4164 1160 installutil.exe 81 PID 1160 wrote to memory of 4164 1160 installutil.exe 81 PID 1160 wrote to memory of 4164 1160 installutil.exe 81 PID 1160 wrote to memory of 4164 1160 installutil.exe 81 PID 1160 wrote to memory of 4164 1160 installutil.exe 81 PID 1160 wrote to memory of 4164 1160 installutil.exe 81 PID 4164 wrote to memory of 4840 4164 RegAsm.exe 83 PID 4164 wrote to memory of 4840 4164 RegAsm.exe 83 PID 4164 wrote to memory of 4840 4164 RegAsm.exe 83 PID 4164 wrote to memory of 4840 4164 RegAsm.exe 83 PID 4164 wrote to memory of 4840 4164 RegAsm.exe 83 PID 4164 wrote to memory of 4840 4164 RegAsm.exe 83 PID 4164 wrote to memory of 4840 4164 RegAsm.exe 83 PID 4164 wrote to memory of 4840 4164 RegAsm.exe 83 PID 4164 wrote to memory of 4840 4164 RegAsm.exe 83 PID 4164 wrote to memory of 2020 4164 RegAsm.exe 84 PID 4164 wrote to memory of 2020 4164 RegAsm.exe 84 PID 4164 wrote to memory of 2020 4164 RegAsm.exe 84 PID 4164 wrote to memory of 2020 4164 RegAsm.exe 84 PID 4164 wrote to memory of 2020 4164 RegAsm.exe 84 PID 4164 wrote to memory of 2020 4164 RegAsm.exe 84 PID 4164 wrote to memory of 2020 4164 RegAsm.exe 84 PID 4164 wrote to memory of 2020 4164 RegAsm.exe 84 PID 4164 wrote to memory of 2020 4164 RegAsm.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb.exe"C:\Users\Admin\AppData\Local\Temp\519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1120 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe" /logtoconsole=false /logfile= /u "C:\Users\Admin\AppData\Local\Temp\519391b8556e2eb1920af3d56f40c239319188265e0bdc7585fcaf6ab2bbaecb.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1160 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\rGaqmF" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB13.tmp"3⤵
- Creates scheduled task(s)
PID:2284
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"3⤵
- 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
PID:4164 -
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"4⤵
- Accesses Microsoft Outlook accounts
PID:4840
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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"4⤵
- Suspicious behavior: EnumeratesProcesses
PID:2020
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
3KB
MD5f94dc819ca773f1e3cb27abbc9e7fa27
SHA19a7700efadc5ea09ab288544ef1e3cd876255086
SHA256a3377ade83786c2bdff5db19ff4dbfd796da4312402b5e77c4c63e38cc6eff92
SHA51272a2c10d7a53a7f9a319dab66d77ed65639e9aa885b551e0055fc7eaf6ef33bbf109205b42ae11555a0f292563914bc6edb63b310c6f9bda9564095f77ab9196
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Filesize
1KB
MD5d298d00c287e5a12d5f2b54a041b0a0d
SHA1efc63dd827a9cf2f2d56a547cf4ca0dd03740a34
SHA2568524f0549eafecb09764eadae9406abf58536f02bf5e8a1ebb7bbd17d38dfb66
SHA5121ffcb19d3ad96b4c8ef304d5161c24cabb4bd1bd87bf57cfee31cd7158c6d98a7c301d2ea5b3e0f7a2c692e140fc1f6b222f8f1c0c1eaf48c2fa5e5c36e711ea