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Analysis
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max time kernel
132s -
max time network
142s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
23/02/2025, 17:06
Behavioral task
behavioral1
Sample
SeroXenBoost.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
SeroXenBoost.exe
Resource
win10v2004-20250217-en
General
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Target
SeroXenBoost.exe
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Size
44KB
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MD5
8005773f97e8f5c44e2f12eab0141cc5
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SHA1
c751dde5b44d985eebaeb9dc027867a9049d4d07
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SHA256
0902f1d84a1c4ae0bd2c0dbb029240487332655a0d7ea5106013b7a2590b519b
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SHA512
2e6b9cff1f281e4a3ce14c879349caf1794b465de48af9bd9e6fee28c75119546872a948b381d248ad46baae6b52a046a9df7ec865fb24df77cd05d9a2639e05
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SSDEEP
768:9V2VRlzVhpvH2VNZZKkVnnn9tF6WRUT0dT9ws+be/1B6SNSlvrz/BB+l:9VGmfHtFBGAZ9gW1omSlH/f+l
Malware Config
Extracted
silverrat
1.0.0.0
172.221.202.55:4421
SilverMutex_dQhpoXJDyX
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certificate
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decrypted_key
-|S.S.S|-
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discord
https://discord.com/api/webhooks/1343008288949669961/TCucLQwwnBXuvu4Z6dJ60IcurXSQYorW9CafoG4F4z55ALbW4u2zJa__1PNCU81Kuh4g
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key
yy6zDjAUmbB09pKvo5Hhug==
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key_x509
UnJEUnNyTmxjY1FPVFJaUlNYaVl4VWxWREpmS0xj
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payload_url
https://g.top4top.io/p_2522c7w8u1.png
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reconnect_delay
4
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server_signature
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
Signatures
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Silverrat family
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Sets file to hidden 1 TTPs 2 IoCs
Modifies file attributes to stop it showing in Explorer etc.
pid Process 2040 attrib.exe 3008 attrib.exe -
Executes dropped EXE 1 IoCs
pid Process 2568 $77xdwd.dll.exe -
Loads dropped DLL 1 IoCs
pid Process 2788 cmd.exe -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ = "\"C:\\Users\\Admin\\AppData\\Roaming\\Windows\\$77xdwd.dll.exe\"" SeroXenBoost.exe -
pid Process 2592 powershell.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
flow ioc 4 discord.com 5 discord.com -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Delays execution with timeout.exe 1 IoCs
pid Process 2664 timeout.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 2600 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2112 SeroXenBoost.exe 2112 SeroXenBoost.exe 2112 SeroXenBoost.exe 2592 powershell.exe 2568 $77xdwd.dll.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeDebugPrivilege 2112 SeroXenBoost.exe Token: SeDebugPrivilege 2568 $77xdwd.dll.exe Token: SeDebugPrivilege 2592 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2568 $77xdwd.dll.exe -
Suspicious use of WriteProcessMemory 27 IoCs
description pid Process procid_target PID 2112 wrote to memory of 2040 2112 SeroXenBoost.exe 30 PID 2112 wrote to memory of 2040 2112 SeroXenBoost.exe 30 PID 2112 wrote to memory of 2040 2112 SeroXenBoost.exe 30 PID 2112 wrote to memory of 3008 2112 SeroXenBoost.exe 32 PID 2112 wrote to memory of 3008 2112 SeroXenBoost.exe 32 PID 2112 wrote to memory of 3008 2112 SeroXenBoost.exe 32 PID 2112 wrote to memory of 2788 2112 SeroXenBoost.exe 35 PID 2112 wrote to memory of 2788 2112 SeroXenBoost.exe 35 PID 2112 wrote to memory of 2788 2112 SeroXenBoost.exe 35 PID 2788 wrote to memory of 2664 2788 cmd.exe 37 PID 2788 wrote to memory of 2664 2788 cmd.exe 37 PID 2788 wrote to memory of 2664 2788 cmd.exe 37 PID 2788 wrote to memory of 2568 2788 cmd.exe 38 PID 2788 wrote to memory of 2568 2788 cmd.exe 38 PID 2788 wrote to memory of 2568 2788 cmd.exe 38 PID 2568 wrote to memory of 2864 2568 $77xdwd.dll.exe 39 PID 2568 wrote to memory of 2864 2568 $77xdwd.dll.exe 39 PID 2568 wrote to memory of 2864 2568 $77xdwd.dll.exe 39 PID 2568 wrote to memory of 2600 2568 $77xdwd.dll.exe 41 PID 2568 wrote to memory of 2600 2568 $77xdwd.dll.exe 41 PID 2568 wrote to memory of 2600 2568 $77xdwd.dll.exe 41 PID 2568 wrote to memory of 2796 2568 $77xdwd.dll.exe 43 PID 2568 wrote to memory of 2796 2568 $77xdwd.dll.exe 43 PID 2568 wrote to memory of 2796 2568 $77xdwd.dll.exe 43 PID 2568 wrote to memory of 2592 2568 $77xdwd.dll.exe 45 PID 2568 wrote to memory of 2592 2568 $77xdwd.dll.exe 45 PID 2568 wrote to memory of 2592 2568 $77xdwd.dll.exe 45 -
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.
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Views/modifies file attributes 1 TTPs 2 IoCs
pid Process 2040 attrib.exe 3008 attrib.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe"C:\Users\Admin\AppData\Local\Temp\SeroXenBoost.exe"1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2112 -
C:\Windows\System32\attrib.exe"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Windows"2⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2040
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C:\Windows\System32\attrib.exe"C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe"2⤵
- Sets file to hidden
- Views/modifies file attributes
PID:3008
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C:\Windows\system32\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp973.tmp.bat""2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2788 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:2664
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C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe"C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe"3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2568 -
C:\Windows\system32\schtasks.exe"schtasks.exe" /query /TN $77xdwd.dll.exe4⤵PID:2864
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C:\Windows\system32\schtasks.exe"schtasks.exe" /Create /SC ONCE /TN "$77xdwd.dll.exe" /TR "C:\Users\Admin\AppData\Roaming\Windows\$77xdwd.dll.exe \"\$77xdwd.dll.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST4⤵
- Scheduled Task/Job: Scheduled Task
PID:2600
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C:\Windows\system32\schtasks.exe"schtasks.exe" /query /TN $77xdwd.dll.exe4⤵PID:2796
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionExtension exe,bat,dll,ps1;exit4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2592
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
162B
MD509a02d44bd52b2f7d3d89107c9dd4aee
SHA1528c5cb9d37c4eff066c4211024616094069770b
SHA256d3f90b420fcc111dd28bb4e2641b74d2e77ac9b07655bd67f660d23f74b2ff42
SHA512cbfeacaac4e367cb3184d7190e124c555e86ae7375717cadbd6606d50bd1c6472abe1ec98e3ad2aa012ef5ae5dd049a25d473ac9e55aeae8573593edfa9025f0
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Filesize
44KB
MD58005773f97e8f5c44e2f12eab0141cc5
SHA1c751dde5b44d985eebaeb9dc027867a9049d4d07
SHA2560902f1d84a1c4ae0bd2c0dbb029240487332655a0d7ea5106013b7a2590b519b
SHA5122e6b9cff1f281e4a3ce14c879349caf1794b465de48af9bd9e6fee28c75119546872a948b381d248ad46baae6b52a046a9df7ec865fb24df77cd05d9a2639e05