Analysis
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max time kernel
141s -
max time network
146s -
platform
windows10-1703_x64 -
resource
win10-20231129-en -
resource tags
arch:x64arch:x86image:win10-20231129-enlocale:en-usos:windows10-1703-x64system -
submitted
13/12/2023, 23:56
Behavioral task
behavioral1
Sample
c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe
Resource
win10-20231129-en
General
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Target
c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe
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Size
1.6MB
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MD5
cb1c58f0af677df803f261536bf42b46
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SHA1
91208ece05adefc2389f9f791030af2e5cef9ee3
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SHA256
c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9
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SHA512
5a023e273993f35087b837f84c015909ed07a1705d7127fa37a3433da9fd2cefae417e94a75c41c0cb93c7bd2e3221ed66f1df8be732f9d98544077d2b585610
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SSDEEP
49152:80ceOGgUYYEmluRKYoFh4kGWusbQnIyDi1E1uonTKi/OjCCNG:1XOGgUYC4RKXFhrusbaDkE1u
Malware Config
Signatures
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Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\FANBooster131.lnk c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe -
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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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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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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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 4 ipinfo.io 3 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 4560 4492 WerFault.exe 18 -
Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe -
Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 4620 schtasks.exe 4124 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4492 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe 4492 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4492 wrote to memory of 4124 4492 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe 35 PID 4492 wrote to memory of 4124 4492 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe 35 PID 4492 wrote to memory of 4124 4492 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe 35 PID 4492 wrote to memory of 4620 4492 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe 53 PID 4492 wrote to memory of 4620 4492 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe 53 PID 4492 wrote to memory of 4620 4492 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe 53 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-3171942101-2809460380-3727589934-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe"C:\Users\Admin\AppData\Local\Temp\c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9.exe"1⤵
- Drops startup file
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Drops file in System32 directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:4492 -
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 HR" /sc HOURLY /rl HIGHEST2⤵
- Creates scheduled task(s)
PID:4124
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 LG" /sc ONLOGON /rl HIGHEST2⤵
- Creates scheduled task(s)
PID:4620
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4492 -s 17322⤵
- Program crash
PID:4560
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\??\c:\windows\system32\svchost.exec:\windows\system32\svchost.exe -k localsystemnetworkrestricted -s fhsvc1⤵PID:4428
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:4624
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1.6MB
MD5cb1c58f0af677df803f261536bf42b46
SHA191208ece05adefc2389f9f791030af2e5cef9ee3
SHA256c976ef86799e581aee13ff4621b07ff9016011e5a530ceadc64d2679c247d5a9
SHA5125a023e273993f35087b837f84c015909ed07a1705d7127fa37a3433da9fd2cefae417e94a75c41c0cb93c7bd2e3221ed66f1df8be732f9d98544077d2b585610
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Filesize
3KB
MD5bcb1af94a3fa641c14ae6ec79dca3fdc
SHA1d18c622e61b7466d06ad728d2c8a61d9a0d6afc0
SHA256dda3eb0b347c6322a04ed36757c95db05dae572e516d23f3051ff07711b44dc5
SHA512c9aa0ef81cc23f6d0d81d2cdb5696370d5c2b7b0a2e1b94fd787a821b843e1a2d8cd8feab67602a962b8fcae93b58d2cb5288eb1cb6820d957c4206dc0b23e91
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Filesize
92KB
MD5d540e45d4e0edb6aab5ed14cc52f1fa5
SHA10c9279b204416dfa86ee22993bd3325b5bc762b1
SHA256ddd7cbb13ec9dca8859d1a0f54d3f326c0097a8d2809636d96d2e4d9cfa86153
SHA5123dc3b50b4948f522f4746a0ef63cdc40995dad3a3ac901b277a37296a33eee2977121f7aa529d9ef7f0cb878c6e15fac6c5570f1e5f73e73b5379633bd0caf9f