Analysis
-
max time kernel
46s -
max time network
50s -
platform
windows7_x64 -
resource
win7-20220901-en -
resource tags
arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system -
submitted
23-11-2022 10:52
Static task
static1
Behavioral task
behavioral1
Sample
b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe
Resource
win10v2004-20220812-en
General
-
Target
b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe
-
Size
445KB
-
MD5
1a95c2df88aa2780ba3ffba638af474f
-
SHA1
282abed0fc03787855df6bd47fc7f6e9e51da2bb
-
SHA256
b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba
-
SHA512
e47db44d4214585517b1438d9195080e1d8af55532865c7cde5656c9a5418c3b8b6db84dec2f2c961476076a535d9c0af09f756e2f96d51d9723def14e4b5b15
-
SSDEEP
12288:jM74ZJoy0mpWN2OMhMBheG4Dvo1z/lqZrIqe6:jM74ZJWIWN2OMhMBAG4Dk9yIql
Malware Config
Signatures
-
Drops file in Drivers directory 1 IoCs
Processes:
b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exedescription ioc process File created C:\Windows\system32\drivers\nethfdrv.sys b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe -
Executes dropped EXE 5 IoCs
Processes:
installd.exenethtsrv.exenetupdsrv.exenethtsrv.exenetupdsrv.exepid process 568 installd.exe 996 nethtsrv.exe 1156 netupdsrv.exe 952 nethtsrv.exe 1640 netupdsrv.exe -
Loads dropped DLL 13 IoCs
Processes:
b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exeinstalld.exenethtsrv.exenethtsrv.exepid process 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe 568 installd.exe 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe 996 nethtsrv.exe 996 nethtsrv.exe 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe 952 nethtsrv.exe 952 nethtsrv.exe 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
Drops file in System32 directory 5 IoCs
Processes:
b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exedescription ioc process File created C:\Windows\SysWOW64\netupdsrv.exe b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe File created C:\Windows\SysWOW64\hfnapi.dll b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe File created C:\Windows\SysWOW64\hfpapi.dll b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe File created C:\Windows\SysWOW64\installd.exe b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe File created C:\Windows\SysWOW64\nethtsrv.exe b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe -
Drops file in Program Files directory 3 IoCs
Processes:
b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exedescription ioc process File created C:\Program Files (x86)\Common Files\Config\ver.xml b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe File created C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe File created C:\Program Files (x86)\Common Files\Config\data.xml b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Runs net.exe
-
Suspicious behavior: LoadsDriver 1 IoCs
Processes:
pid process 464 -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
nethtsrv.exedescription pid process Token: SeDebugPrivilege 952 nethtsrv.exe -
Suspicious use of WriteProcessMemory 50 IoCs
Processes:
b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exenet.exenet.exenet.exenet.exedescription pid process target process PID 1444 wrote to memory of 1120 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1120 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1120 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1120 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1120 wrote to memory of 460 1120 net.exe net1.exe PID 1120 wrote to memory of 460 1120 net.exe net1.exe PID 1120 wrote to memory of 460 1120 net.exe net1.exe PID 1120 wrote to memory of 460 1120 net.exe net1.exe PID 1444 wrote to memory of 1756 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1756 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1756 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1756 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1756 wrote to memory of 2012 1756 net.exe net1.exe PID 1756 wrote to memory of 2012 1756 net.exe net1.exe PID 1756 wrote to memory of 2012 1756 net.exe net1.exe PID 1756 wrote to memory of 2012 1756 net.exe net1.exe PID 1444 wrote to memory of 568 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe installd.exe PID 1444 wrote to memory of 568 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe installd.exe PID 1444 wrote to memory of 568 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe installd.exe PID 1444 wrote to memory of 568 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe installd.exe PID 1444 wrote to memory of 568 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe installd.exe PID 1444 wrote to memory of 568 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe installd.exe PID 1444 wrote to memory of 568 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe installd.exe PID 1444 wrote to memory of 996 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe nethtsrv.exe PID 1444 wrote to memory of 996 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe nethtsrv.exe PID 1444 wrote to memory of 996 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe nethtsrv.exe PID 1444 wrote to memory of 996 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe nethtsrv.exe PID 1444 wrote to memory of 1156 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe netupdsrv.exe PID 1444 wrote to memory of 1156 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe netupdsrv.exe PID 1444 wrote to memory of 1156 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe netupdsrv.exe PID 1444 wrote to memory of 1156 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe netupdsrv.exe PID 1444 wrote to memory of 1156 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe netupdsrv.exe PID 1444 wrote to memory of 1156 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe netupdsrv.exe PID 1444 wrote to memory of 1156 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe netupdsrv.exe PID 1444 wrote to memory of 1768 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1768 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1768 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1768 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1768 wrote to memory of 1480 1768 net.exe net1.exe PID 1768 wrote to memory of 1480 1768 net.exe net1.exe PID 1768 wrote to memory of 1480 1768 net.exe net1.exe PID 1768 wrote to memory of 1480 1768 net.exe net1.exe PID 1444 wrote to memory of 1220 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1220 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1220 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1444 wrote to memory of 1220 1444 b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe net.exe PID 1220 wrote to memory of 1800 1220 net.exe net1.exe PID 1220 wrote to memory of 1800 1220 net.exe net1.exe PID 1220 wrote to memory of 1800 1220 net.exe net1.exe PID 1220 wrote to memory of 1800 1220 net.exe net1.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe"C:\Users\Admin\AppData\Local\Temp\b81cff167b4c447ef4efacc6abe649773615894acac28120d217869a14c9f5ba.exe"1⤵
- Drops file in Drivers directory
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1444 -
C:\Windows\SysWOW64\net.exenet stop nethttpservice2⤵
- Suspicious use of WriteProcessMemory
PID:1120 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop nethttpservice3⤵PID:460
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C:\Windows\SysWOW64\net.exenet stop serviceupdater2⤵
- Suspicious use of WriteProcessMemory
PID:1756 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop serviceupdater3⤵PID:2012
-
C:\Windows\SysWOW64\installd.exe"C:\Windows\system32\installd.exe" nethfdrv2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:568 -
C:\Windows\SysWOW64\nethtsrv.exe"C:\Windows\system32\nethtsrv.exe" -nfdi2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:996 -
C:\Windows\SysWOW64\netupdsrv.exe"C:\Windows\system32\netupdsrv.exe" -nfdi2⤵
- Executes dropped EXE
PID:1156 -
C:\Windows\SysWOW64\net.exenet start nethttpservice2⤵
- Suspicious use of WriteProcessMemory
PID:1768 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 start nethttpservice3⤵PID:1480
-
C:\Windows\SysWOW64\net.exenet start serviceupdater2⤵
- Suspicious use of WriteProcessMemory
PID:1220 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 start serviceupdater3⤵PID:1800
-
C:\Windows\SysWOW64\nethtsrv.exeC:\Windows\SysWOW64\nethtsrv.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:952
-
C:\Windows\SysWOW64\netupdsrv.exeC:\Windows\SysWOW64\netupdsrv.exe1⤵
- Executes dropped EXE
PID:1640
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
106KB
MD57d20fa23fe0266356282bfa8f21c7d73
SHA1fa366fe922b9091adde113204d3c672d57fcae5f
SHA256df7b63654d615d2141a96f8356a816a3b7b1cda4bd416f4733032f1da5a25d24
SHA512042ab267a513b6ecc33ea95771c2709eb36fa155d5f9d2bfbc13f2cf0ad5499494727690c15282ddfeaa25bd9080be9bdeb6b35c01d23b2e58bf88ab3c7a2517
-
Filesize
241KB
MD533940518e01a0e60867f34193f11b9f9
SHA1a58e456de9546f512cc9fbc3e8def2ffcfee4a2b
SHA256e6a0e21e0230268c03b7a4eb03860b181cbc26e20eaae30e9b32211d2716e00e
SHA512ac6f1fccf8f07db51288cb8679f6eabde1162fdb3e3c020cf7524aa37a8a44b2fcc5604d18a2a8faf196124e852fb18810d59b134d5af1b9975d1867788fa8a6
-
Filesize
108KB
MD58da0714df6f17041239f4a39f952dddf
SHA1d476f076c1601a7cbecd210dee33995a5527cece
SHA25635d7ce86e79a7d57ebc86e15afcd1a3723089f064bc0f3ef1d8ffa0dc6c983f2
SHA5126b1ff79173f8e7cab8c0651ce3c68962e13f2758c9befc038cda21be62f42fda3941d32c7503300e1c655cd0a0f5cd83ea3c566184172696e8e4aaeda2eb05b4
-
Filesize
176KB
MD51a1f8624f05752a1304bad41d59129ce
SHA1886464f57b5a90c5ec9d380b085bc54176259f74
SHA256c457c37762bcb0efb140d688a61687c17bd88084b0c00122f02c73069ce78dc4
SHA512e377c1d4be69574922ca5a1b1fe255f3d736d24ecea8a6eeaf1005dbdd229c9ab1c9c8744fd248d7305115b54676679abd4c0aa4361f35aea7df2891ba0facee
-
Filesize
176KB
MD51a1f8624f05752a1304bad41d59129ce
SHA1886464f57b5a90c5ec9d380b085bc54176259f74
SHA256c457c37762bcb0efb140d688a61687c17bd88084b0c00122f02c73069ce78dc4
SHA512e377c1d4be69574922ca5a1b1fe255f3d736d24ecea8a6eeaf1005dbdd229c9ab1c9c8744fd248d7305115b54676679abd4c0aa4361f35aea7df2891ba0facee
-
Filesize
158KB
MD5c6807f7532f66b43d8a1edb39eafbaa1
SHA1b2668208a1b986029dbbfc11b560fe3242faf9dc
SHA2566a51f1974e742284d6d5103ef883b4affaf786ed990aa19ccf0f1695265faa50
SHA51269e427ae094ddcf33dee760c5f7b0af580ddc7c9a77e7b68ae64b65974f8c971ddf2974dc48501e71ffa30c9e28fcbb7498737f06ea40e5af3fea84ac0ae1bda
-
Filesize
158KB
MD5c6807f7532f66b43d8a1edb39eafbaa1
SHA1b2668208a1b986029dbbfc11b560fe3242faf9dc
SHA2566a51f1974e742284d6d5103ef883b4affaf786ed990aa19ccf0f1695265faa50
SHA51269e427ae094ddcf33dee760c5f7b0af580ddc7c9a77e7b68ae64b65974f8c971ddf2974dc48501e71ffa30c9e28fcbb7498737f06ea40e5af3fea84ac0ae1bda
-
Filesize
11KB
MD5c17103ae9072a06da581dec998343fc1
SHA1b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d
SHA256dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f
SHA512d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f
-
Filesize
6KB
MD5acc2b699edfea5bf5aae45aba3a41e96
SHA1d2accf4d494e43ceb2cff69abe4dd17147d29cc2
SHA256168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
SHA512e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe
-
Filesize
6KB
MD5acc2b699edfea5bf5aae45aba3a41e96
SHA1d2accf4d494e43ceb2cff69abe4dd17147d29cc2
SHA256168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
SHA512e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe
-
Filesize
6KB
MD5acc2b699edfea5bf5aae45aba3a41e96
SHA1d2accf4d494e43ceb2cff69abe4dd17147d29cc2
SHA256168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
SHA512e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe
-
Filesize
6KB
MD5acc2b699edfea5bf5aae45aba3a41e96
SHA1d2accf4d494e43ceb2cff69abe4dd17147d29cc2
SHA256168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
SHA512e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe
-
Filesize
106KB
MD57d20fa23fe0266356282bfa8f21c7d73
SHA1fa366fe922b9091adde113204d3c672d57fcae5f
SHA256df7b63654d615d2141a96f8356a816a3b7b1cda4bd416f4733032f1da5a25d24
SHA512042ab267a513b6ecc33ea95771c2709eb36fa155d5f9d2bfbc13f2cf0ad5499494727690c15282ddfeaa25bd9080be9bdeb6b35c01d23b2e58bf88ab3c7a2517
-
Filesize
106KB
MD57d20fa23fe0266356282bfa8f21c7d73
SHA1fa366fe922b9091adde113204d3c672d57fcae5f
SHA256df7b63654d615d2141a96f8356a816a3b7b1cda4bd416f4733032f1da5a25d24
SHA512042ab267a513b6ecc33ea95771c2709eb36fa155d5f9d2bfbc13f2cf0ad5499494727690c15282ddfeaa25bd9080be9bdeb6b35c01d23b2e58bf88ab3c7a2517
-
Filesize
106KB
MD57d20fa23fe0266356282bfa8f21c7d73
SHA1fa366fe922b9091adde113204d3c672d57fcae5f
SHA256df7b63654d615d2141a96f8356a816a3b7b1cda4bd416f4733032f1da5a25d24
SHA512042ab267a513b6ecc33ea95771c2709eb36fa155d5f9d2bfbc13f2cf0ad5499494727690c15282ddfeaa25bd9080be9bdeb6b35c01d23b2e58bf88ab3c7a2517
-
Filesize
241KB
MD533940518e01a0e60867f34193f11b9f9
SHA1a58e456de9546f512cc9fbc3e8def2ffcfee4a2b
SHA256e6a0e21e0230268c03b7a4eb03860b181cbc26e20eaae30e9b32211d2716e00e
SHA512ac6f1fccf8f07db51288cb8679f6eabde1162fdb3e3c020cf7524aa37a8a44b2fcc5604d18a2a8faf196124e852fb18810d59b134d5af1b9975d1867788fa8a6
-
Filesize
241KB
MD533940518e01a0e60867f34193f11b9f9
SHA1a58e456de9546f512cc9fbc3e8def2ffcfee4a2b
SHA256e6a0e21e0230268c03b7a4eb03860b181cbc26e20eaae30e9b32211d2716e00e
SHA512ac6f1fccf8f07db51288cb8679f6eabde1162fdb3e3c020cf7524aa37a8a44b2fcc5604d18a2a8faf196124e852fb18810d59b134d5af1b9975d1867788fa8a6
-
Filesize
108KB
MD58da0714df6f17041239f4a39f952dddf
SHA1d476f076c1601a7cbecd210dee33995a5527cece
SHA25635d7ce86e79a7d57ebc86e15afcd1a3723089f064bc0f3ef1d8ffa0dc6c983f2
SHA5126b1ff79173f8e7cab8c0651ce3c68962e13f2758c9befc038cda21be62f42fda3941d32c7503300e1c655cd0a0f5cd83ea3c566184172696e8e4aaeda2eb05b4
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Filesize
176KB
MD51a1f8624f05752a1304bad41d59129ce
SHA1886464f57b5a90c5ec9d380b085bc54176259f74
SHA256c457c37762bcb0efb140d688a61687c17bd88084b0c00122f02c73069ce78dc4
SHA512e377c1d4be69574922ca5a1b1fe255f3d736d24ecea8a6eeaf1005dbdd229c9ab1c9c8744fd248d7305115b54676679abd4c0aa4361f35aea7df2891ba0facee
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Filesize
158KB
MD5c6807f7532f66b43d8a1edb39eafbaa1
SHA1b2668208a1b986029dbbfc11b560fe3242faf9dc
SHA2566a51f1974e742284d6d5103ef883b4affaf786ed990aa19ccf0f1695265faa50
SHA51269e427ae094ddcf33dee760c5f7b0af580ddc7c9a77e7b68ae64b65974f8c971ddf2974dc48501e71ffa30c9e28fcbb7498737f06ea40e5af3fea84ac0ae1bda