Analysis
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max time kernel
156s -
max time network
154s -
platform
windows7_x64 -
resource
win7-en -
submitted
06-09-2021 22:12
Static task
static1
Behavioral task
behavioral1
Sample
f8ed697e63a97f53801c85a47b5350e3.exe
Resource
win7-en
General
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Target
f8ed697e63a97f53801c85a47b5350e3.exe
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Size
646KB
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MD5
f8ed697e63a97f53801c85a47b5350e3
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SHA1
a12f21b71c116d3b9669c94e454a532283a85c19
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SHA256
f9ae91e6b312fadf8864035e4e737daf845cd41cd4b9e28e83fe9820277ea925
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SHA512
2da4243cdb031f0269e9672ced790b017458928a1bc6a37a238f4596152f9e7aa08c5023c6bf5490b7386adb4f441559d42a0a7076da8f16c3672268d18585ba
Malware Config
Extracted
njrat
0.7NC
NYAN CAT
pedrobedoya2021.duckdns.org:1980
cf13c225ff474d45b
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reg_key
cf13c225ff474d45b
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splitter
@!#&^%$
Signatures
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Looks for VirtualBox Guest Additions in registry 2 TTPs
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Looks for VMWare Tools registry key 2 TTPs
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Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
f8ed697e63a97f53801c85a47b5350e3.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion f8ed697e63a97f53801c85a47b5350e3.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion f8ed697e63a97f53801c85a47b5350e3.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
f8ed697e63a97f53801c85a47b5350e3.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum f8ed697e63a97f53801c85a47b5350e3.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 f8ed697e63a97f53801c85a47b5350e3.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
f8ed697e63a97f53801c85a47b5350e3.exedescription pid process target process PID 1676 set thread context of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
f8ed697e63a97f53801c85a47b5350e3.exepid process 1676 f8ed697e63a97f53801c85a47b5350e3.exe -
Suspicious use of AdjustPrivilegeToken 16 IoCs
Processes:
f8ed697e63a97f53801c85a47b5350e3.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 1676 f8ed697e63a97f53801c85a47b5350e3.exe Token: SeDebugPrivilege 1496 RegSvcs.exe Token: 33 1496 RegSvcs.exe Token: SeIncBasePriorityPrivilege 1496 RegSvcs.exe Token: 33 1496 RegSvcs.exe Token: SeIncBasePriorityPrivilege 1496 RegSvcs.exe Token: 33 1496 RegSvcs.exe Token: SeIncBasePriorityPrivilege 1496 RegSvcs.exe Token: 33 1496 RegSvcs.exe Token: SeIncBasePriorityPrivilege 1496 RegSvcs.exe Token: 33 1496 RegSvcs.exe Token: SeIncBasePriorityPrivilege 1496 RegSvcs.exe Token: 33 1496 RegSvcs.exe Token: SeIncBasePriorityPrivilege 1496 RegSvcs.exe Token: 33 1496 RegSvcs.exe Token: SeIncBasePriorityPrivilege 1496 RegSvcs.exe -
Suspicious use of WriteProcessMemory 16 IoCs
Processes:
f8ed697e63a97f53801c85a47b5350e3.exedescription pid process target process PID 1676 wrote to memory of 624 1676 f8ed697e63a97f53801c85a47b5350e3.exe schtasks.exe PID 1676 wrote to memory of 624 1676 f8ed697e63a97f53801c85a47b5350e3.exe schtasks.exe PID 1676 wrote to memory of 624 1676 f8ed697e63a97f53801c85a47b5350e3.exe schtasks.exe PID 1676 wrote to memory of 624 1676 f8ed697e63a97f53801c85a47b5350e3.exe schtasks.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe PID 1676 wrote to memory of 1496 1676 f8ed697e63a97f53801c85a47b5350e3.exe RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f8ed697e63a97f53801c85a47b5350e3.exe"C:\Users\Admin\AppData\Local\Temp\f8ed697e63a97f53801c85a47b5350e3.exe"1⤵
- Checks BIOS information in registry
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RbgkAODGyxjzXd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp5C82.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"2⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp5C82.tmpMD5
d2432d977e535b5f05680319eddc1e8b
SHA18058de8d8e8eb9be7d074c8dc781b05028c5a3ad
SHA25650018ba6d39ae5b7c9f742c8b0cd1efa0dabd770bf8706cd466e0e15bc0c6eec
SHA512933d36e2a4eb67fb8afa0448b1f0f190e33180e062f478c2a5678037b8649231789c04d8b0084263098f8e9e622ca696b50d69d710cf5f35842f32de846dfcf7
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memory/624-60-0x0000000000000000-mapping.dmp
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memory/1496-62-0x0000000000400000-0x000000000040C000-memory.dmpFilesize
48KB
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memory/1496-63-0x000000000040677E-mapping.dmp
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memory/1496-64-0x0000000000400000-0x000000000040C000-memory.dmpFilesize
48KB
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memory/1496-66-0x0000000004970000-0x0000000004971000-memory.dmpFilesize
4KB
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memory/1676-53-0x0000000000140000-0x0000000000141000-memory.dmpFilesize
4KB
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memory/1676-55-0x0000000004970000-0x00000000049DE000-memory.dmpFilesize
440KB
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memory/1676-56-0x0000000001FD0000-0x0000000001FD1000-memory.dmpFilesize
4KB
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memory/1676-57-0x00000000002B0000-0x00000000002C0000-memory.dmpFilesize
64KB
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memory/1676-58-0x0000000005320000-0x0000000005397000-memory.dmpFilesize
476KB
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memory/1676-59-0x0000000000890000-0x00000000008C2000-memory.dmpFilesize
200KB