Analysis
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max time kernel
139s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system -
submitted
13/12/2023, 23:18
Behavioral task
behavioral1
Sample
45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe
Resource
win10v2004-20231130-en
General
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Target
45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe
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Size
1.6MB
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MD5
1176a31766b5de387414af0a494b0a8b
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SHA1
b2385e9c44ff8f49bd705e77cfb290f7a074154c
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SHA256
45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734
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SHA512
cf2268a909edce26b54dd755ed8171675cd818554e888daedab61af21b7fa5ac822dfba0e025919e02b2434483703b9ecb01402aaeac9cc7e7ec5a8f22622881
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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 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.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-1-5-21-1791582586-1997866593-3795608343-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe Key opened \REGISTRY\USER\S-1-5-21-1791582586-1997866593-3795608343-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe Key opened \REGISTRY\USER\S-1-5-21-1791582586-1997866593-3795608343-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1791582586-1997866593-3795608343-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MaxLoonaFest131 = "C:\\Users\\Admin\\AppData\\Local\\MaxLoonaFest131\\MaxLoonaFest131.exe" 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.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 11 ipinfo.io 13 ipinfo.io -
Drops file in System32 directory 4 IoCs
description ioc Process File opened for modification C:\Windows\System32\GroupPolicy 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe File opened for modification C:\Windows\SysWOW64\GroupPolicy\gpt.ini 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe File created C:\Windows\System32\GroupPolicy\Machine\Registry.pol 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe File opened for modification C:\Windows\System32\GroupPolicy\GPT.INI 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.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 2260 4480 WerFault.exe 84 -
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 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.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 1804 schtasks.exe 1432 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4480 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe 4480 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 4480 wrote to memory of 1804 4480 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe 86 PID 4480 wrote to memory of 1804 4480 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe 86 PID 4480 wrote to memory of 1804 4480 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe 86 PID 4480 wrote to memory of 1432 4480 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe 91 PID 4480 wrote to memory of 1432 4480 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe 91 PID 4480 wrote to memory of 1432 4480 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe 91 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1791582586-1997866593-3795608343-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1791582586-1997866593-3795608343-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.exe"C:\Users\Admin\AppData\Local\Temp\45dd7bdcb82d8dd467a26f1e50f74c8421a5d19dd949c78b4484c5f954fa4734.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:4480 -
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:1804
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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:1432
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4480 -s 16682⤵
- Program crash
PID:2260
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵PID:1932
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵PID:2540
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4480 -ip 44801⤵PID:5088
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
260KB
MD59bf325b33d2d6d0e103261082dca8444
SHA1e095f470ea37c97fb40f0b7e06437d6644a6afb1
SHA256001d35b740ed73481ec16c7996e36e6ce0eccda183ff98dd19e901025d85044a
SHA51295c80766a2db3cdabec5b682182109c8f93abee2135f28e6dfdabf1dfb6eb92c62de2fa8f36c59da66c677f28638eb8e2f1509c271154b639dcde6b8a9c42b30
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Filesize
3KB
MD57a0f93dcb55cad1faeed055ee05a8750
SHA1119acc73699cc076329cde640d6ce58ebdabd19c
SHA256358f0b6b73e71202f36a9ad166566dbec2f036166a5392187c7a5f723befdb1d
SHA5128ff081c81f8262810f8ce1fcfc04287f8c6684ab82c13c7e38edfef9f34a73d6d6273289c2bb7ee61f8930e1f067713c1403e6f86751bdb31f001834f8fd6f4d
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Filesize
92KB
MD5506305b81ca2e2c270c8cc550edee2df
SHA1370f5306fde08801c87244eac61f9716c863e8f5
SHA256d14e92ff6924f3a4b2b97a83d3016d84377c0cf34c3e59a87d77cbd7ccbe12f6
SHA512a63b5a7c3f89f642978f27017c3428500e43da3f9f94447b3779c90f4b7844b10727a3795a446de8641e3753925df209eb9cab016f2d941e5863e2c8be0903e8
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Filesize
116KB
MD5f70aa3fa04f0536280f872ad17973c3d
SHA150a7b889329a92de1b272d0ecf5fce87395d3123
SHA2568d782aa65de6db3538a14da82216e96d5e0a3c60496726e3541a8165bccc65f8
SHA51230675c5c610d9aa32a4c4a4d9c3af7570823cd197f8d2a709222c78e2cd15304bbed80e233e3674ec2f6e33d1961c67fd6a46dc8ba8b1a301cd0722932c03c84