Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20230703-en -
resource tags
arch:x64arch:x86image:win7-20230703-enlocale:en-usos:windows7-x64system -
submitted
10-07-2023 13:28
Behavioral task
behavioral1
Sample
FirefoxInstallerexe.exe
Resource
win7-20230703-en
Behavioral task
behavioral2
Sample
FirefoxInstallerexe.exe
Resource
win10v2004-20230703-en
General
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Target
FirefoxInstallerexe.exe
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Size
188KB
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MD5
43797b66dbc85e52db3f9ccbbab6a811
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SHA1
47cb18b091310ad396684f0619261332f1164f8d
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SHA256
6e977411cea076427e903cba32827b2d78202021f62c6b045c1e4a65042e8d15
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SHA512
c50e4c1855c7f44c7d83f650e18cbb05686b85ac993eb828cb8181106dfcf5b4fe732a97839430e44e7ef198dde0e5459a52845ff487597e039e63f4d7561fd5
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SSDEEP
3072:LJZKnPE2YyJzELtyThyYeY8lNgoiJ+sX8HFvytb3NuIMAAcoQntK+C7VieM3SFZK:LJZKBI0hyYeY4eoiJ+sCFvCU/TQwX3Mp
Malware Config
Signatures
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VanillaRat
VanillaRat is an advanced remote administration tool coded in C#.
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Vanilla Rat payload 17 IoCs
Processes:
resource yara_rule behavioral1/memory/2280-54-0x0000000001170000-0x00000000011A6000-memory.dmp vanillarat C:\Users\Admin\svchost.exe vanillarat C:\Users\Admin\svchost.exe vanillarat \Users\Admin\svchost.exe vanillarat C:\Users\Admin\svchost.exe vanillarat behavioral1/memory/2100-63-0x00000000002F0000-0x0000000000312000-memory.dmp vanillarat \Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exe vanillarat \Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exe vanillarat \Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exe vanillarat \Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exe vanillarat \Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exe vanillarat \Users\Admin\AppData\Roaming\svchost.exe vanillarat C:\Users\Admin\AppData\Roaming\svchost.exe vanillarat C:\Users\Admin\AppData\Roaming\svchost.exe vanillarat behavioral1/memory/392-76-0x0000000000C20000-0x0000000000C42000-memory.dmp vanillarat behavioral1/memory/392-77-0x00000000008E0000-0x0000000000920000-memory.dmp vanillarat behavioral1/memory/392-78-0x00000000008E0000-0x0000000000920000-memory.dmp vanillarat -
Executes dropped EXE 2 IoCs
Processes:
svchost.exesvchost.exepid process 2100 svchost.exe 392 svchost.exe -
Loads dropped DLL 7 IoCs
Processes:
FirefoxInstallerexe.exeWerFault.exesvchost.exepid process 2280 FirefoxInstallerexe.exe 2916 WerFault.exe 2916 WerFault.exe 2916 WerFault.exe 2916 WerFault.exe 2916 WerFault.exe 2100 svchost.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
svchost.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-719110999-4061093145-1944564496-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe" svchost.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 2916 2280 WerFault.exe FirefoxInstallerexe.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
FirefoxInstallerexe.exesvchost.exedescription pid process Token: SeDebugPrivilege 2280 FirefoxInstallerexe.exe Token: SeDebugPrivilege 2100 svchost.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
FirefoxInstallerexe.exesvchost.exedescription pid process target process PID 2280 wrote to memory of 2100 2280 FirefoxInstallerexe.exe svchost.exe PID 2280 wrote to memory of 2100 2280 FirefoxInstallerexe.exe svchost.exe PID 2280 wrote to memory of 2100 2280 FirefoxInstallerexe.exe svchost.exe PID 2280 wrote to memory of 2100 2280 FirefoxInstallerexe.exe svchost.exe PID 2280 wrote to memory of 2916 2280 FirefoxInstallerexe.exe WerFault.exe PID 2280 wrote to memory of 2916 2280 FirefoxInstallerexe.exe WerFault.exe PID 2280 wrote to memory of 2916 2280 FirefoxInstallerexe.exe WerFault.exe PID 2280 wrote to memory of 2916 2280 FirefoxInstallerexe.exe WerFault.exe PID 2100 wrote to memory of 392 2100 svchost.exe svchost.exe PID 2100 wrote to memory of 392 2100 svchost.exe svchost.exe PID 2100 wrote to memory of 392 2100 svchost.exe svchost.exe PID 2100 wrote to memory of 392 2100 svchost.exe svchost.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exe"C:\Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exe"1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\svchost.exe"C:\Users\Admin\svchost.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\svchost.exe"C:\Users\Admin\AppData\Roaming\svchost.exe"3⤵
- Executes dropped EXE
- Adds Run key to start application
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2280 -s 8922⤵
- Loads dropped DLL
- Program crash
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\svchost.exeFilesize
115KB
MD5afd5d29bfcddb00b11a869fd2016282d
SHA10de3328c8a0dce66d17765665b29662de75e5d15
SHA25638194b42cc180ab72aed1256447bec9b8b65910241e5a2b97ac29b0c12d95748
SHA512ce3aaf59162768087bbb34de0767c74ee05e8f13a19559c49896f5249d36900ee14270ade74964c8cd3d8b6bcf684002cf3bddc8d14856907d2b2b2d0026f133
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C:\Users\Admin\AppData\Roaming\svchost.exeFilesize
115KB
MD5afd5d29bfcddb00b11a869fd2016282d
SHA10de3328c8a0dce66d17765665b29662de75e5d15
SHA25638194b42cc180ab72aed1256447bec9b8b65910241e5a2b97ac29b0c12d95748
SHA512ce3aaf59162768087bbb34de0767c74ee05e8f13a19559c49896f5249d36900ee14270ade74964c8cd3d8b6bcf684002cf3bddc8d14856907d2b2b2d0026f133
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C:\Users\Admin\svchost.exeFilesize
115KB
MD5afd5d29bfcddb00b11a869fd2016282d
SHA10de3328c8a0dce66d17765665b29662de75e5d15
SHA25638194b42cc180ab72aed1256447bec9b8b65910241e5a2b97ac29b0c12d95748
SHA512ce3aaf59162768087bbb34de0767c74ee05e8f13a19559c49896f5249d36900ee14270ade74964c8cd3d8b6bcf684002cf3bddc8d14856907d2b2b2d0026f133
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C:\Users\Admin\svchost.exeFilesize
115KB
MD5afd5d29bfcddb00b11a869fd2016282d
SHA10de3328c8a0dce66d17765665b29662de75e5d15
SHA25638194b42cc180ab72aed1256447bec9b8b65910241e5a2b97ac29b0c12d95748
SHA512ce3aaf59162768087bbb34de0767c74ee05e8f13a19559c49896f5249d36900ee14270ade74964c8cd3d8b6bcf684002cf3bddc8d14856907d2b2b2d0026f133
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C:\Users\Admin\svchost.exeFilesize
115KB
MD5afd5d29bfcddb00b11a869fd2016282d
SHA10de3328c8a0dce66d17765665b29662de75e5d15
SHA25638194b42cc180ab72aed1256447bec9b8b65910241e5a2b97ac29b0c12d95748
SHA512ce3aaf59162768087bbb34de0767c74ee05e8f13a19559c49896f5249d36900ee14270ade74964c8cd3d8b6bcf684002cf3bddc8d14856907d2b2b2d0026f133
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\Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exeFilesize
188KB
MD543797b66dbc85e52db3f9ccbbab6a811
SHA147cb18b091310ad396684f0619261332f1164f8d
SHA2566e977411cea076427e903cba32827b2d78202021f62c6b045c1e4a65042e8d15
SHA512c50e4c1855c7f44c7d83f650e18cbb05686b85ac993eb828cb8181106dfcf5b4fe732a97839430e44e7ef198dde0e5459a52845ff487597e039e63f4d7561fd5
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\Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exeFilesize
188KB
MD543797b66dbc85e52db3f9ccbbab6a811
SHA147cb18b091310ad396684f0619261332f1164f8d
SHA2566e977411cea076427e903cba32827b2d78202021f62c6b045c1e4a65042e8d15
SHA512c50e4c1855c7f44c7d83f650e18cbb05686b85ac993eb828cb8181106dfcf5b4fe732a97839430e44e7ef198dde0e5459a52845ff487597e039e63f4d7561fd5
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\Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exeFilesize
188KB
MD543797b66dbc85e52db3f9ccbbab6a811
SHA147cb18b091310ad396684f0619261332f1164f8d
SHA2566e977411cea076427e903cba32827b2d78202021f62c6b045c1e4a65042e8d15
SHA512c50e4c1855c7f44c7d83f650e18cbb05686b85ac993eb828cb8181106dfcf5b4fe732a97839430e44e7ef198dde0e5459a52845ff487597e039e63f4d7561fd5
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\Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exeFilesize
188KB
MD543797b66dbc85e52db3f9ccbbab6a811
SHA147cb18b091310ad396684f0619261332f1164f8d
SHA2566e977411cea076427e903cba32827b2d78202021f62c6b045c1e4a65042e8d15
SHA512c50e4c1855c7f44c7d83f650e18cbb05686b85ac993eb828cb8181106dfcf5b4fe732a97839430e44e7ef198dde0e5459a52845ff487597e039e63f4d7561fd5
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\Users\Admin\AppData\Local\Temp\FirefoxInstallerexe.exeFilesize
188KB
MD543797b66dbc85e52db3f9ccbbab6a811
SHA147cb18b091310ad396684f0619261332f1164f8d
SHA2566e977411cea076427e903cba32827b2d78202021f62c6b045c1e4a65042e8d15
SHA512c50e4c1855c7f44c7d83f650e18cbb05686b85ac993eb828cb8181106dfcf5b4fe732a97839430e44e7ef198dde0e5459a52845ff487597e039e63f4d7561fd5
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\Users\Admin\AppData\Roaming\svchost.exeFilesize
115KB
MD5afd5d29bfcddb00b11a869fd2016282d
SHA10de3328c8a0dce66d17765665b29662de75e5d15
SHA25638194b42cc180ab72aed1256447bec9b8b65910241e5a2b97ac29b0c12d95748
SHA512ce3aaf59162768087bbb34de0767c74ee05e8f13a19559c49896f5249d36900ee14270ade74964c8cd3d8b6bcf684002cf3bddc8d14856907d2b2b2d0026f133
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\Users\Admin\svchost.exeFilesize
115KB
MD5afd5d29bfcddb00b11a869fd2016282d
SHA10de3328c8a0dce66d17765665b29662de75e5d15
SHA25638194b42cc180ab72aed1256447bec9b8b65910241e5a2b97ac29b0c12d95748
SHA512ce3aaf59162768087bbb34de0767c74ee05e8f13a19559c49896f5249d36900ee14270ade74964c8cd3d8b6bcf684002cf3bddc8d14856907d2b2b2d0026f133
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memory/392-76-0x0000000000C20000-0x0000000000C42000-memory.dmpFilesize
136KB
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memory/392-77-0x00000000008E0000-0x0000000000920000-memory.dmpFilesize
256KB
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memory/392-78-0x00000000008E0000-0x0000000000920000-memory.dmpFilesize
256KB
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memory/2100-63-0x00000000002F0000-0x0000000000312000-memory.dmpFilesize
136KB
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memory/2280-54-0x0000000001170000-0x00000000011A6000-memory.dmpFilesize
216KB