Analysis Overview
SHA256
7d253821d0e9186d3852d6dfbdf0c10f577925210a23fa0162eb8547505a49cf
Threat Level: Known bad
The file a76146ce596e7583f86d1d13701db46b was found to be: Known bad.
Malicious Activity Summary
Modifies WinLogon for persistence
Darkcomet
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
Drops file in System32 directory
Unsigned PE
Enumerates physical storage devices
Suspicious use of SetWindowsHookEx
Modifies registry class
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-02-26 21:20
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-02-26 21:20
Reported
2024-02-26 21:23
Platform
win7-20240221-en
Max time kernel
150s
Max time network
124s
Command Line
Signatures
Darkcomet
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\MSDCSC\msdcsc.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\newfile\projekt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\newfile\projekt.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" | C:\Windows\SysWOW64\MSDCSC\msdcsc.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\MSDCSC\msdcsc.exe | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\MSDCSC\msdcsc.exe | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\MSDCSC\ | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\MSDCSC\msdcsc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\newfile\projekt.exe
"C:\Users\Admin\AppData\Local\Temp\newfile\projekt.exe"
C:\Users\Admin\AppData\Local\Temp\infection.exe
"C:\Users\Admin\AppData\Local\Temp\infection.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\patch.bat" "
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\MSDCSC\msdcsc.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
Files
memory/1612-0-0x00000000010A0000-0x00000000010AC000-memory.dmp
memory/1612-1-0x0000000073EC0000-0x00000000745AE000-memory.dmp
memory/1612-2-0x0000000004D10000-0x0000000004D50000-memory.dmp
\Users\Admin\AppData\Local\Temp\infection.exe
| MD5 | 125f4059f1674df7ea224a0c8f629e28 |
| SHA1 | 027ab465dedc2bfd1b1b9c08a5d0b084004952c6 |
| SHA256 | edd998b66a23f93056ce7ec3ebfd22f2c858be634c03611f50e64be97d749a33 |
| SHA512 | 8426e97e7d39cf35a6ef06875b99ab593f42de6b2f1d42338e297e425a136552d05b30c26836e6e76e096807659c858c642ca46d6399f2f558590a68fba9fbb5 |
C:\Users\Admin\AppData\Local\Temp\patch.bat
| MD5 | d70fbe28c0321dbf79f5792bf210f36c |
| SHA1 | 41e5e9ac251f53840c39e084f2b9710f413c6c23 |
| SHA256 | 3f97ea84c493b5f639e122d0bbf82790074735a7461797a40405c282c32033fd |
| SHA512 | 8d2662608a1d62801890808d43c7d3f8dea8555a4825ac90034a124bf9198cdef21826797ab6fede89d49bed6507550b93ad70da570edf70065f9ae370ddc4c2 |
memory/1612-20-0x0000000073EC0000-0x00000000745AE000-memory.dmp
memory/2088-22-0x0000000000240000-0x0000000000241000-memory.dmp
memory/2548-35-0x00000000001D0000-0x00000000001D1000-memory.dmp
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
| MD5 | f335e6e2fb3b825d1af5cc57493847c2 |
| SHA1 | f216cd43da60ee1c82d50b4920ac7a20e10143bb |
| SHA256 | 024a581336414f27776d034d1446dcfb638dfe576505989b31fb3ef359454013 |
| SHA512 | 6e96816027a58a902130a69a41fa81fa7643ebfe547f3e0b55440b32c35e57c6e8bcc82c9020c022f4a6aab1debab28d1b33986edc0c0807c1ed172939c2c1c0 |
memory/2088-37-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-38-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-39-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-40-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-41-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-42-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-43-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-44-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-45-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-46-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-47-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-48-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-49-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-50-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/2548-51-0x0000000000400000-0x00000000004B2000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-02-26 21:20
Reported
2024-02-26 21:23
Platform
win10v2004-20240226-en
Max time kernel
150s
Max time network
149s
Command Line
Signatures
Darkcomet
Modifies WinLogon for persistence
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\newfile\projekt.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\MSDCSC\msdcsc.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe" | C:\Windows\SysWOW64\MSDCSC\msdcsc.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\MSDCSC\msdcsc.exe | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\MSDCSC\msdcsc.exe | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\MSDCSC\ | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ | C:\Users\Admin\AppData\Local\Temp\infection.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\MSDCSC\msdcsc.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\newfile\projekt.exe
"C:\Users\Admin\AppData\Local\Temp\newfile\projekt.exe"
C:\Users\Admin\AppData\Local\Temp\infection.exe
"C:\Users\Admin\AppData\Local\Temp\infection.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\patch.bat" "
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\MSDCSC\msdcsc.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 20.231.121.79:80 | tcp | |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | 209.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | 22.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
| US | 8.8.8.8:53 | tester-server.zapto.org | udp |
Files
memory/2128-0-0x00000000000F0000-0x00000000000FC000-memory.dmp
memory/2128-1-0x0000000004A80000-0x0000000004B1C000-memory.dmp
memory/2128-2-0x0000000074FE0000-0x0000000075790000-memory.dmp
memory/2128-3-0x00000000050D0000-0x0000000005674000-memory.dmp
memory/2128-4-0x0000000004BC0000-0x0000000004C52000-memory.dmp
memory/2128-5-0x0000000004B40000-0x0000000004B50000-memory.dmp
memory/2128-6-0x0000000004BA0000-0x0000000004BAA000-memory.dmp
memory/2128-7-0x0000000004E00000-0x0000000004E56000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\infection.exe
| MD5 | 125f4059f1674df7ea224a0c8f629e28 |
| SHA1 | 027ab465dedc2bfd1b1b9c08a5d0b084004952c6 |
| SHA256 | edd998b66a23f93056ce7ec3ebfd22f2c858be634c03611f50e64be97d749a33 |
| SHA512 | 8426e97e7d39cf35a6ef06875b99ab593f42de6b2f1d42338e297e425a136552d05b30c26836e6e76e096807659c858c642ca46d6399f2f558590a68fba9fbb5 |
memory/3480-23-0x00000000022C0000-0x00000000022C1000-memory.dmp
memory/2128-22-0x0000000074FE0000-0x0000000075790000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\patch.bat
| MD5 | d70fbe28c0321dbf79f5792bf210f36c |
| SHA1 | 41e5e9ac251f53840c39e084f2b9710f413c6c23 |
| SHA256 | 3f97ea84c493b5f639e122d0bbf82790074735a7461797a40405c282c32033fd |
| SHA512 | 8d2662608a1d62801890808d43c7d3f8dea8555a4825ac90034a124bf9198cdef21826797ab6fede89d49bed6507550b93ad70da570edf70065f9ae370ddc4c2 |
memory/1796-86-0x0000000002160000-0x0000000002161000-memory.dmp
memory/3480-87-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-88-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-89-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-90-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-91-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-92-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-93-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-94-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-95-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-96-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-97-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-98-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-99-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-100-0x0000000000400000-0x00000000004B2000-memory.dmp
memory/1796-101-0x0000000000400000-0x00000000004B2000-memory.dmp