Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
25-04-2024 05:42
Static task
static1
Behavioral task
behavioral1
Sample
degrado-lavacrypt-dfgs.exe
Resource
win7-20240220-en
General
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Target
degrado-lavacrypt-dfgs.exe
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Size
426KB
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MD5
7d5053287343d71bf9e3b913d4e4e551
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SHA1
822191da126f6d18cbc110e02473afb0528751bd
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SHA256
48cd145349ebdb8a3728c8c55b9e5a59df2ee7676a847afa340d7f88ae24cfd1
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SHA512
801a414806c2ff4a8db764dd4d1fa9b2ad06ac7976fd5a98079362c33583dce246f95dd76427f911d0674d07d3ebd26085773653ca52ba779e2707f202428bd3
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SSDEEP
12288:qoE0Q+9PzNEAVTH2BKlYZQ/yKrFvM/2SwJ:F1L9zLLCKlAQqEva25
Malware Config
Extracted
asyncrat
1.0.7
BSOD_New
Mika
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delay
1
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install
false
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install_file
UpdateTaskMachineUa.bat.exe
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install_folder
%AppData%
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pastebin_config
https://pastebin.com/raw/F7c4dqk3
Signatures
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Processes:
svchost.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe -
Processes:
svchost.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0" svchost.exe -
Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs
Processes:
degrado-lavacrypt-dfgs.exesvchost.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions degrado-lavacrypt-dfgs.exe Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions svchost.exe -
Looks for VMWare Tools registry key 2 TTPs 2 IoCs
Processes:
svchost.exedegrado-lavacrypt-dfgs.exedescription ioc process Key opened \REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools svchost.exe Key opened \REGISTRY\MACHINE\SOFTWARE\VMware, Inc.\VMware Tools degrado-lavacrypt-dfgs.exe -
Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
degrado-lavacrypt-dfgs.exesvchost.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion degrado-lavacrypt-dfgs.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion degrado-lavacrypt-dfgs.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion svchost.exe -
Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
degrado-lavacrypt-dfgs.exesvchost.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation degrado-lavacrypt-dfgs.exe Key value queried \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation svchost.exe -
Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 4796 svchost.exe -
Processes:
svchost.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths svchost.exe Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Roaming\svchost.exe = "0" svchost.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
degrado-lavacrypt-dfgs.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "\"C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe\"" degrado-lavacrypt-dfgs.exe -
Processes:
svchost.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA svchost.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
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Maps connected drives based on registry 3 TTPs 4 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
degrado-lavacrypt-dfgs.exesvchost.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum degrado-lavacrypt-dfgs.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 degrado-lavacrypt-dfgs.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum svchost.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0 svchost.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
svchost.exedescription pid process target process PID 4796 set thread context of 1832 4796 svchost.exe msbuild.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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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.
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Delays execution with timeout.exe 1 IoCs
Processes:
timeout.exepid process 820 timeout.exe -
Suspicious behavior: EnumeratesProcesses 26 IoCs
Processes:
degrado-lavacrypt-dfgs.exepowershell.exepid process 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 2484 degrado-lavacrypt-dfgs.exe 1860 powershell.exe 1860 powershell.exe 1860 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
degrado-lavacrypt-dfgs.exesvchost.exepowershell.exemsbuild.exedescription pid process Token: SeDebugPrivilege 2484 degrado-lavacrypt-dfgs.exe Token: SeDebugPrivilege 4796 svchost.exe Token: SeDebugPrivilege 1860 powershell.exe Token: SeDebugPrivilege 1832 msbuild.exe -
Suspicious use of WriteProcessMemory 20 IoCs
Processes:
degrado-lavacrypt-dfgs.execmd.execmd.exesvchost.exedescription pid process target process PID 2484 wrote to memory of 784 2484 degrado-lavacrypt-dfgs.exe cmd.exe PID 2484 wrote to memory of 784 2484 degrado-lavacrypt-dfgs.exe cmd.exe PID 2484 wrote to memory of 1924 2484 degrado-lavacrypt-dfgs.exe cmd.exe PID 2484 wrote to memory of 1924 2484 degrado-lavacrypt-dfgs.exe cmd.exe PID 784 wrote to memory of 2244 784 cmd.exe schtasks.exe PID 784 wrote to memory of 2244 784 cmd.exe schtasks.exe PID 1924 wrote to memory of 820 1924 cmd.exe timeout.exe PID 1924 wrote to memory of 820 1924 cmd.exe timeout.exe PID 1924 wrote to memory of 4796 1924 cmd.exe svchost.exe PID 1924 wrote to memory of 4796 1924 cmd.exe svchost.exe PID 4796 wrote to memory of 1860 4796 svchost.exe powershell.exe PID 4796 wrote to memory of 1860 4796 svchost.exe powershell.exe PID 4796 wrote to memory of 1832 4796 svchost.exe msbuild.exe PID 4796 wrote to memory of 1832 4796 svchost.exe msbuild.exe PID 4796 wrote to memory of 1832 4796 svchost.exe msbuild.exe PID 4796 wrote to memory of 1832 4796 svchost.exe msbuild.exe PID 4796 wrote to memory of 1832 4796 svchost.exe msbuild.exe PID 4796 wrote to memory of 1832 4796 svchost.exe msbuild.exe PID 4796 wrote to memory of 1832 4796 svchost.exe msbuild.exe PID 4796 wrote to memory of 1832 4796 svchost.exe msbuild.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" svchost.exe -
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\degrado-lavacrypt-dfgs.exe"C:\Users\Admin\AppData\Local\Temp\degrado-lavacrypt-dfgs.exe"1⤵
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Adds Run key to start application
- Maps connected drives based on registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2484 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit2⤵
- Suspicious use of WriteProcessMemory
PID:784 -
C:\Windows\system32\schtasks.exeschtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'3⤵
- Creates scheduled task(s)
PID:2244
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5469.tmp.bat""2⤵
- Suspicious use of WriteProcessMemory
PID:1924 -
C:\Windows\system32\timeout.exetimeout 33⤵
- Delays execution with timeout.exe
PID:820
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C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"3⤵
- UAC bypass
- Windows security bypass
- Looks for VirtualBox Guest Additions in registry
- Looks for VMWare Tools registry key
- Checks BIOS information in registry
- Checks computer location settings
- Executes dropped EXE
- Windows security modification
- Checks whether UAC is enabled
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:4796 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\svchost.exe" -Force4⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1860
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"4⤵
- Suspicious use of AdjustPrivilegeToken
PID:1832
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Network
MITRE ATT&CK Enterprise v15
Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Defense Evasion
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Impair Defenses
3Disable or Modify Tools
3Modify Registry
5Virtualization/Sandbox Evasion
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
151B
MD52af23035c3976902a75eb41fc5b92acb
SHA19ece309b08ce9b6f6670ac5b9000a4cfa0f41839
SHA256c115bb107ac4fd646822f81724014eec502f00e5ce560193a46314f5ee0efce5
SHA512961cbd2cfa6389aeeea2781ca2cdc9f76f8ade019fa88ff8c8972695efc4ce132fdc086e57096366d8576d550075c82b17d38f4601cdce2ce684784e100ec54d
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Filesize
426KB
MD57d5053287343d71bf9e3b913d4e4e551
SHA1822191da126f6d18cbc110e02473afb0528751bd
SHA25648cd145349ebdb8a3728c8c55b9e5a59df2ee7676a847afa340d7f88ae24cfd1
SHA512801a414806c2ff4a8db764dd4d1fa9b2ad06ac7976fd5a98079362c33583dce246f95dd76427f911d0674d07d3ebd26085773653ca52ba779e2707f202428bd3