Analysis
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max time kernel
151s -
max time network
37s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
18-05-2021 10:21
Static task
static1
Behavioral task
behavioral1
Sample
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe
Resource
win10v20210408
General
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Target
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe
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Size
1.0MB
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MD5
c2d79486de6ec827acfc03a6fbf84617
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SHA1
6b22d9cf2f219ad0a3dea4412196ba036e02e2de
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SHA256
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a
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SHA512
245c932215a4ee42585c6baa4ad0f8bd420e16b16313dfd01067a403c472a63f8bfe2189f5c6c2f3798a66bdb36b80723a589dec8600a6f24a37156d9b930078
Malware Config
Signatures
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Modifies WinLogon for persistence 2 TTPs 2 IoCs
Processes:
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe" 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe," 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe -
Drops file in Drivers directory 2 IoCs
Processes:
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exedescription ioc process File created C:\Windows\SysWOW64\drivers\spools.exe 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened for modification C:\Windows\SysWOW64\drivers\spools.exe 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe -
Sets service image path in registry 2 TTPs
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Adds Run key to start application 2 TTPs 4 IoCs
Processes:
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ntuser = "C:\\Windows\\system32\\drivers\\spools.exe" 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\autoload = "C:\\Users\\Admin\\cftmon.exe" 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe -
Enumerates connected drives 3 TTPs 20 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exedescription ioc process File opened (read-only) \??\R: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\S: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\N: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\K: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\L: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\P: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\H: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\J: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\M: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\Q: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\T: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\U: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\V: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\X: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\E: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\G: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\I: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\O: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\W: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe File opened (read-only) \??\F: 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe -
Installs/modifies Browser Helper Object 2 TTPs
BHOs are DLL modules which act as plugins for Internet Explorer.
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Modifies WinLogon 2 TTPs 1 IoCs
Processes:
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\UIHost = "logonui.exe" 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe -
Modifies registry class 1 IoCs
Processes:
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\SysWow64\\drivers\\spools.exe \"%1\" %*" 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exedescription pid process target process PID 740 wrote to memory of 2796 740 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe reg.exe PID 740 wrote to memory of 2796 740 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe reg.exe PID 740 wrote to memory of 2796 740 1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe reg.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe"C:\Users\Admin\AppData\Local\Temp\1bcd5347777ae3bc76a4654bfa355b6872b8349cd492e9320933a4d23a5b7a3a.exe"1⤵
- Modifies WinLogon for persistence
- Modifies system executable filetype association
- Drops file in Drivers directory
- Adds Run key to start application
- Enumerates connected drives
- Modifies WinLogon
- Modifies registry class
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\reg.exereg delete "HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects" /f2⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/2796-114-0x0000000000000000-mapping.dmp