Analysis Overview
SHA256
a35da8eb1eb76de2b0b18db628e2ea3aab84848dacb7efa5b50c1252c8673691
Threat Level: Known bad
The file nurik.exe was found to be: Known bad.
Malicious Activity Summary
Dcrat family
Process spawned unexpected child process
DcRat
DCRat payload
DCRat payload
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Drops file in Program Files directory
Drops file in Windows directory
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SendNotifyMessage
Enumerates system info in registry
Uses Task Scheduler COM API
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Creates scheduled task(s)
Modifies registry class
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-03 15:44
Signatures
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Dcrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-03 15:44
Reported
2024-06-03 15:47
Platform
win7-20240215-en
Max time kernel
132s
Max time network
153s
Command Line
Signatures
DcRat
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe |
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| N/A | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File created | C:\Program Files (x86)\Mozilla Maintenance Service\logs\lsass.exe | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| File created | C:\Program Files (x86)\Mozilla Maintenance Service\logs\6203df4a6bafc7 | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\DigitalLocker\it-IT\sppsvc.exe | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| File created | C:\Windows\DigitalLocker\it-IT\0a1fd5f707cd16 | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| File created | C:\Windows\Cursors\winlogon.exe | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| File created | C:\Windows\Cursors\cc11b995f2a76d | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| N/A | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
| N/A | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
| N/A | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
| N/A | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
| N/A | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
| N/A | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
| N/A | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
| N/A | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
| N/A | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeShutdownPrivilege | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Program Files\Google\Chrome\Application\chrome.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Cursors\winlogon.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\VideoLAN\VLC\vlc.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\nurik.exe
"C:\Users\Admin\AppData\Local\Temp\nurik.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\ChainsurrogateservercrtSvc\saDcLDNtMACWbPSal7f79VzsdFIoT.vbe"
C:\Program Files\VideoLAN\VLC\vlc.exe
"C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\FormatReceive.mpeg"
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe"
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=106.0.5249.119 --initial-client-data=0xc0,0xc4,0xc8,0x94,0xcc,0x7fef2ef9758,0x7fef2ef9768,0x7fef2ef9778
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=1176 --field-trial-handle=1380,i,5145741206557508989,13025664193349413784,131072 /prefetch:2
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=1508 --field-trial-handle=1380,i,5145741206557508989,13025664193349413784,131072 /prefetch:8
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=1620 --field-trial-handle=1380,i,5145741206557508989,13025664193349413784,131072 /prefetch:8
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --first-renderer-process --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --mojo-platform-channel-handle=2304 --field-trial-handle=1380,i,5145741206557508989,13025664193349413784,131072 /prefetch:1
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --mojo-platform-channel-handle=2312 --field-trial-handle=1380,i,5145741206557508989,13025664193349413784,131072 /prefetch:1
C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe
"C:\Program Files\Google\Chrome\Application\106.0.5249.119\elevation_service.exe"
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --gpu-preferences=UAAAAAAAAADgAAAYAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAEgAAAAAAAAASAAAAAAAAAAYAAAAAgAAABAAAAAAAAAAGAAAAAAAAAAQAAAAAAAAAAAAAAAOAAAAEAAAAAAAAAABAAAADgAAAAgAAAAAAAAACAAAAAAAAAA= --use-gl=angle --use-angle=swiftshader-webgl --mojo-platform-channel-handle=2872 --field-trial-handle=1380,i,5145741206557508989,13025664193349413784,131072 /prefetch:2
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --display-capture-permissions-policy-allowed --disable-gpu-compositing --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --mojo-platform-channel-handle=3224 --field-trial-handle=1380,i,5145741206557508989,13025664193349413784,131072 /prefetch:1
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3484 --field-trial-handle=1380,i,5145741206557508989,13025664193349413784,131072 /prefetch:8
C:\Program Files\Google\Chrome\Application\chrome.exe
"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=3492 --field-trial-handle=1380,i,5145741206557508989,13025664193349413784,131072 /prefetch:8
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\ChainsurrogateservercrtSvc\7ctkTGeYTGsX.bat" "
C:\ChainsurrogateservercrtSvc\comcomponent.exe
"C:\ChainsurrogateservercrtSvc\comcomponent.exe"
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 9 /tr "'C:\Users\Default\Local Settings\dwm.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\Users\Default\Local Settings\dwm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\Users\Default\Local Settings\dwm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 6 /tr "'C:\MSOCache\All Users\{90140000-00A1-0409-0000-0000000FF1CE}-C\sppsvc.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 10 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\lsass.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsass" /sc ONLOGON /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\lsass.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "lsassl" /sc MINUTE /mo 9 /tr "'C:\Program Files (x86)\Mozilla Maintenance Service\logs\lsass.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\ChainsurrogateservercrtSvc\WmiPrvSE.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\ChainsurrogateservercrtSvc\WmiPrvSE.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "WmiPrvSEW" /sc MINUTE /mo 5 /tr "'C:\ChainsurrogateservercrtSvc\WmiPrvSE.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 11 /tr "'C:\Windows\DigitalLocker\it-IT\sppsvc.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvc" /sc ONLOGON /tr "'C:\Windows\DigitalLocker\it-IT\sppsvc.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sppsvcs" /sc MINUTE /mo 7 /tr "'C:\Windows\DigitalLocker\it-IT\sppsvc.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 12 /tr "'C:\Windows\Cursors\winlogon.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogon" /sc ONLOGON /tr "'C:\Windows\Cursors\winlogon.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "winlogonw" /sc MINUTE /mo 14 /tr "'C:\Windows\Cursors\winlogon.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 13 /tr "'C:\ChainsurrogateservercrtSvc\dwm.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwm" /sc ONLOGON /tr "'C:\ChainsurrogateservercrtSvc\dwm.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "dwmd" /sc MINUTE /mo 11 /tr "'C:\ChainsurrogateservercrtSvc\dwm.exe'" /rl HIGHEST /f
C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\Sn09nq7wcc.bat"
C:\Windows\system32\w32tm.exe
w32tm /stripchart /computer:localhost /period:5 /dataonly /samples:2
C:\Windows\Cursors\winlogon.exe
"C:\Windows\Cursors\winlogon.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | www.google.com | udp |
| GB | 142.250.187.196:443 | www.google.com | tcp |
| US | 8.8.8.8:53 | apis.google.com | udp |
| GB | 142.250.200.14:443 | apis.google.com | tcp |
| US | 8.8.8.8:53 | play.google.com | udp |
| US | 8.8.8.8:53 | a0990904.xsph.ru | udp |
| RU | 141.8.195.33:80 | a0990904.xsph.ru | tcp |
| RU | 141.8.195.33:80 | a0990904.xsph.ru | tcp |
| RU | 141.8.195.33:80 | a0990904.xsph.ru | tcp |
| RU | 141.8.195.33:80 | a0990904.xsph.ru | tcp |
Files
C:\ChainsurrogateservercrtSvc\saDcLDNtMACWbPSal7f79VzsdFIoT.vbe
| MD5 | 68fc7d806b2e4d5bb18840ff3b7335fa |
| SHA1 | 50135f8674652413966f71ecfa560d0f1b56af41 |
| SHA256 | c82308e827b761f053843620962e885b2507094d13318a507d234227d19b4daf |
| SHA512 | b23b0785214b41787def03e3333abf1414d3389b760a719c52cac4ba71209fe38eb22fa457199229c74ff54b6f60e710f41cd24fdb9084bacf5dbb915d86b90a |
\??\pipe\crashpad_2588_FEHHXLKOELYVTFXN
| MD5 | d41d8cd98f00b204e9800998ecf8427e |
| SHA1 | da39a3ee5e6b4b0d3255bfef95601890afd80709 |
| SHA256 | e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 |
| SHA512 | cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\000007.dbtmp
| MD5 | 18e723571b00fb1694a3bad6c78e4054 |
| SHA1 | afcc0ef32d46fe59e0483f9a3c891d3034d12f32 |
| SHA256 | 8af72f43857550b01eab1019335772b367a17a9884a7a759fdf4fe6f272b90aa |
| SHA512 | 43bb0af7d3984012d2d67ca6b71f0201e5b948e6fe26a899641c4c6f066c59906d468ddf7f1df5ea5fa33c2bc5ea8219c0f2c82e0a5c365ad7581b898a8859e2 |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\GPUCache\data_1
| MD5 | f50f89a0a91564d0b8a211f8921aa7de |
| SHA1 | 112403a17dd69d5b9018b8cede023cb3b54eab7d |
| SHA256 | b1e963d702392fb7224786e7d56d43973e9b9efd1b89c17814d7c558ffc0cdec |
| SHA512 | bf8cda48cf1ec4e73f0dd1d4fa5562af1836120214edb74957430cd3e4a2783e801fa3f4ed2afb375257caeed4abe958265237d6e0aacf35a9ede7a2e8898d58 |
C:\ChainsurrogateservercrtSvc\7ctkTGeYTGsX.bat
| MD5 | 00d8627c777530fad58ffd565435ecce |
| SHA1 | 0c78d64961aa210eec2fa7912fd158b32bfdd49c |
| SHA256 | e1574b801185dd8af878ec4bd90f096cd51a547363c01a0c30f596fa9ff1525d |
| SHA512 | f8d9cc7cfa05c99a819e2df389056fb6d9e46f6f12e4aff32dc2317223515da5adf83227116c8271af265b2810fe5c5a9f2be011ba2b444658257f3f05814af0 |
\ChainsurrogateservercrtSvc\comcomponent.exe
| MD5 | dcf4d176ad6a4f528f5d214e58c9c907 |
| SHA1 | a2f1b127c21b0c2f6091ceff330e8db81de92222 |
| SHA256 | 113ec0f1d5a26be980cc65adc21d717a04c12db5af3b3361caf8a84495faaba4 |
| SHA512 | 9442ea2416cc63d491a39c2ffb20d0073a54015884303f2b05a4811fcf8eaaf47fa440ae89e52f0359c686143aca8142d0988cf8bb0d928c47f6eb874d80d77c |
C:\Users\Admin\AppData\Local\Google\Chrome\User Data\b6b96a04-3e78-4fbb-8bd9-870eaf7274c4.tmp
| MD5 | 95cb1af1625b80fc3757e457dac04bd0 |
| SHA1 | 1b46d32ea5b48d833fce1664a19ad89b06c7d5ea |
| SHA256 | 2d126e8efe53435cbcddbeb8e09bc1bfb2a2650112e0840a16edb26fb2d66bf1 |
| SHA512 | 7c66c2c11b677316d85c443f3e14a18b241e032149f268e19061a5acf98b8b077e9d701819f5649ba9512351c222f72872f05ff91b4b3e7e26c85f3027c29589 |
memory/2300-160-0x0000000001100000-0x00000000011FC000-memory.dmp
memory/2300-161-0x00000000001C0000-0x00000000001D2000-memory.dmp
memory/2300-162-0x00000000004F0000-0x00000000004FC000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Sn09nq7wcc.bat
| MD5 | 3031acf56323a1146d824964e12924ce |
| SHA1 | c157c09deb79c0e57c186d1643d9184090676db5 |
| SHA256 | 0c63f2164d3bbc60418a932cd5a2ef663ee2083b3fcbfd4dddd038c5a0936496 |
| SHA512 | 33411e6ae1e5c3123bd51b5b8f5eca60fea2d35c8355fc2dd81e676fc466050fcbdd63c0e2c85a800a06aba90a18b3d2e3f1d3b909df9afb3f9b7f5b77b194d6 |
memory/2720-190-0x000007FEF6750000-0x000007FEF6784000-memory.dmp
memory/2720-189-0x000000013F9E0000-0x000000013FAD8000-memory.dmp
memory/2720-191-0x000007FEF5570000-0x000007FEF5824000-memory.dmp
memory/2720-192-0x000007FEF4060000-0x000007FEF510B000-memory.dmp
memory/2464-195-0x0000000000FB0000-0x00000000010AC000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-03 15:44
Reported
2024-06-03 15:47
Platform
win10v2004-20240508-en
Max time kernel
148s
Max time network
150s
Command Line
Signatures
DcRat
Process spawned unexpected child process
| Description | Indicator | Process | Target |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe | |
| Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process | N/A | C:\Windows\system32\schtasks.exe |
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\nurik.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\bcastdvr\RuntimeBroker.exe | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| File created | C:\Windows\bcastdvr\9e8d7a4ca61bd9 | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
Enumerates physical storage devices
Creates scheduled task(s)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
| N/A | N/A | C:\Windows\system32\schtasks.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\nurik.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\ChainsurrogateservercrtSvc\comcomponent.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\ChainsurrogateservercrtSvc\sysmon.exe | N/A |
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Processes
C:\Users\Admin\AppData\Local\Temp\nurik.exe
"C:\Users\Admin\AppData\Local\Temp\nurik.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\ChainsurrogateservercrtSvc\saDcLDNtMACWbPSal7f79VzsdFIoT.vbe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\ChainsurrogateservercrtSvc\7ctkTGeYTGsX.bat" "
C:\ChainsurrogateservercrtSvc\comcomponent.exe
"C:\ChainsurrogateservercrtSvc\comcomponent.exe"
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 12 /tr "'C:\ChainsurrogateservercrtSvc\sysmon.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmon" /sc ONLOGON /tr "'C:\ChainsurrogateservercrtSvc\sysmon.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "sysmons" /sc MINUTE /mo 12 /tr "'C:\ChainsurrogateservercrtSvc\sysmon.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 10 /tr "'C:\Windows\bcastdvr\RuntimeBroker.exe'" /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBroker" /sc ONLOGON /tr "'C:\Windows\bcastdvr\RuntimeBroker.exe'" /rl HIGHEST /f
C:\Windows\system32\schtasks.exe
schtasks.exe /create /tn "RuntimeBrokerR" /sc MINUTE /mo 14 /tr "'C:\Windows\bcastdvr\RuntimeBroker.exe'" /rl HIGHEST /f
C:\ChainsurrogateservercrtSvc\sysmon.exe
"C:\ChainsurrogateservercrtSvc\sysmon.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 22.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | a0990904.xsph.ru | udp |
| RU | 141.8.195.33:80 | a0990904.xsph.ru | tcp |
| RU | 141.8.195.33:80 | a0990904.xsph.ru | tcp |
| US | 8.8.8.8:53 | 33.195.8.141.in-addr.arpa | udp |
| RU | 141.8.195.33:80 | a0990904.xsph.ru | tcp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 105.83.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| RU | 141.8.195.33:80 | a0990904.xsph.ru | tcp |
| US | 8.8.8.8:53 | 31.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| RU | 141.8.195.33:80 | a0990904.xsph.ru | tcp |
| US | 8.8.8.8:53 | 26.173.189.20.in-addr.arpa | udp |
Files
C:\ChainsurrogateservercrtSvc\saDcLDNtMACWbPSal7f79VzsdFIoT.vbe
| MD5 | 68fc7d806b2e4d5bb18840ff3b7335fa |
| SHA1 | 50135f8674652413966f71ecfa560d0f1b56af41 |
| SHA256 | c82308e827b761f053843620962e885b2507094d13318a507d234227d19b4daf |
| SHA512 | b23b0785214b41787def03e3333abf1414d3389b760a719c52cac4ba71209fe38eb22fa457199229c74ff54b6f60e710f41cd24fdb9084bacf5dbb915d86b90a |
C:\ChainsurrogateservercrtSvc\7ctkTGeYTGsX.bat
| MD5 | 00d8627c777530fad58ffd565435ecce |
| SHA1 | 0c78d64961aa210eec2fa7912fd158b32bfdd49c |
| SHA256 | e1574b801185dd8af878ec4bd90f096cd51a547363c01a0c30f596fa9ff1525d |
| SHA512 | f8d9cc7cfa05c99a819e2df389056fb6d9e46f6f12e4aff32dc2317223515da5adf83227116c8271af265b2810fe5c5a9f2be011ba2b444658257f3f05814af0 |
C:\ChainsurrogateservercrtSvc\comcomponent.exe
| MD5 | dcf4d176ad6a4f528f5d214e58c9c907 |
| SHA1 | a2f1b127c21b0c2f6091ceff330e8db81de92222 |
| SHA256 | 113ec0f1d5a26be980cc65adc21d717a04c12db5af3b3361caf8a84495faaba4 |
| SHA512 | 9442ea2416cc63d491a39c2ffb20d0073a54015884303f2b05a4811fcf8eaaf47fa440ae89e52f0359c686143aca8142d0988cf8bb0d928c47f6eb874d80d77c |
memory/1256-12-0x00007FF8D6433000-0x00007FF8D6435000-memory.dmp
memory/1256-13-0x0000000000DA0000-0x0000000000E9C000-memory.dmp
memory/1256-14-0x00000000017B0000-0x00000000017C2000-memory.dmp
memory/1256-15-0x000000001C640000-0x000000001CB68000-memory.dmp
memory/1256-16-0x0000000001810000-0x000000000181C000-memory.dmp
memory/3144-32-0x0000000000EA0000-0x0000000000EB2000-memory.dmp