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 10:49
Static task
static1
Behavioral task
behavioral1
Sample
f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe
Resource
win10v2004-20220812-en
General
-
Target
f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe
-
Size
447KB
-
MD5
3102cf05fd14e432719f8fe240ba8e41
-
SHA1
93d85cd263fa122cad27a2c126da63072a9422e6
-
SHA256
f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1
-
SHA512
a5587a3aab89559efde084b715d9f7050cf111a3d51bde0319517386ac39b9f98ae0c3519b0294f56fd9bfda31920e96629f8b25ad7c09cd2c6e8fd30e9dd9ef
-
SSDEEP
12288:VKyDSUAySxbmZVBjLt6LNAHoWd6o6dEAbhB3p:V3DqEBjsButAEohT
Malware Config
Signatures
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Drops file in Drivers directory 1 IoCs
Processes:
f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exedescription ioc process File created C:\Windows\system32\drivers\nethfdrv.sys f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe -
Executes dropped EXE 5 IoCs
Processes:
installd.exenethtsrv.exenetupdsrv.exenethtsrv.exenetupdsrv.exepid process 1676 installd.exe 1556 nethtsrv.exe 840 netupdsrv.exe 812 nethtsrv.exe 1652 netupdsrv.exe -
Loads dropped DLL 13 IoCs
Processes:
f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exeinstalld.exenethtsrv.exenethtsrv.exepid process 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe 1676 installd.exe 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe 1556 nethtsrv.exe 1556 nethtsrv.exe 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe 812 nethtsrv.exe 812 nethtsrv.exe 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.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:
f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exedescription ioc process File created C:\Windows\SysWOW64\hfpapi.dll f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe File created C:\Windows\SysWOW64\installd.exe f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe File created C:\Windows\SysWOW64\nethtsrv.exe f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe File created C:\Windows\SysWOW64\netupdsrv.exe f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe File created C:\Windows\SysWOW64\hfnapi.dll f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe -
Drops file in Program Files directory 3 IoCs
Processes:
f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exedescription ioc process File created C:\Program Files (x86)\Common Files\Config\data.xml f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe File created C:\Program Files (x86)\Common Files\Config\ver.xml f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe File created C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.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 812 nethtsrv.exe -
Suspicious use of WriteProcessMemory 50 IoCs
Processes:
f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exenet.exenet.exenet.exenet.exedescription pid process target process PID 1500 wrote to memory of 1716 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 1716 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 1716 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 1716 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1716 wrote to memory of 556 1716 net.exe net1.exe PID 1716 wrote to memory of 556 1716 net.exe net1.exe PID 1716 wrote to memory of 556 1716 net.exe net1.exe PID 1716 wrote to memory of 556 1716 net.exe net1.exe PID 1500 wrote to memory of 1292 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 1292 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 1292 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 1292 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1292 wrote to memory of 584 1292 net.exe net1.exe PID 1292 wrote to memory of 584 1292 net.exe net1.exe PID 1292 wrote to memory of 584 1292 net.exe net1.exe PID 1292 wrote to memory of 584 1292 net.exe net1.exe PID 1500 wrote to memory of 1676 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe installd.exe PID 1500 wrote to memory of 1676 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe installd.exe PID 1500 wrote to memory of 1676 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe installd.exe PID 1500 wrote to memory of 1676 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe installd.exe PID 1500 wrote to memory of 1676 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe installd.exe PID 1500 wrote to memory of 1676 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe installd.exe PID 1500 wrote to memory of 1676 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe installd.exe PID 1500 wrote to memory of 1556 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe nethtsrv.exe PID 1500 wrote to memory of 1556 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe nethtsrv.exe PID 1500 wrote to memory of 1556 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe nethtsrv.exe PID 1500 wrote to memory of 1556 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe nethtsrv.exe PID 1500 wrote to memory of 840 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe netupdsrv.exe PID 1500 wrote to memory of 840 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe netupdsrv.exe PID 1500 wrote to memory of 840 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe netupdsrv.exe PID 1500 wrote to memory of 840 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe netupdsrv.exe PID 1500 wrote to memory of 840 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe netupdsrv.exe PID 1500 wrote to memory of 840 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe netupdsrv.exe PID 1500 wrote to memory of 840 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe netupdsrv.exe PID 1500 wrote to memory of 1644 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 1644 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 1644 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 1644 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1644 wrote to memory of 1336 1644 net.exe net1.exe PID 1644 wrote to memory of 1336 1644 net.exe net1.exe PID 1644 wrote to memory of 1336 1644 net.exe net1.exe PID 1644 wrote to memory of 1336 1644 net.exe net1.exe PID 1500 wrote to memory of 268 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 268 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 268 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 1500 wrote to memory of 268 1500 f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe net.exe PID 268 wrote to memory of 1648 268 net.exe net1.exe PID 268 wrote to memory of 1648 268 net.exe net1.exe PID 268 wrote to memory of 1648 268 net.exe net1.exe PID 268 wrote to memory of 1648 268 net.exe net1.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.exe"C:\Users\Admin\AppData\Local\Temp\f85f331e892cb038244007e8f5597bc1a047a8166b457107e7062281c48e22d1.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:1500 -
C:\Windows\SysWOW64\net.exenet stop nethttpservice2⤵
- Suspicious use of WriteProcessMemory
PID:1716 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop nethttpservice3⤵PID:556
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C:\Windows\SysWOW64\net.exenet stop serviceupdater2⤵
- Suspicious use of WriteProcessMemory
PID:1292 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop serviceupdater3⤵PID:584
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C:\Windows\SysWOW64\installd.exe"C:\Windows\system32\installd.exe" nethfdrv2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1676 -
C:\Windows\SysWOW64\nethtsrv.exe"C:\Windows\system32\nethtsrv.exe" -nfdi2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1556 -
C:\Windows\SysWOW64\netupdsrv.exe"C:\Windows\system32\netupdsrv.exe" -nfdi2⤵
- Executes dropped EXE
PID:840 -
C:\Windows\SysWOW64\net.exenet start nethttpservice2⤵
- Suspicious use of WriteProcessMemory
PID:1644 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 start nethttpservice3⤵PID:1336
-
C:\Windows\SysWOW64\net.exenet start serviceupdater2⤵
- Suspicious use of WriteProcessMemory
PID:268 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 start serviceupdater3⤵PID:1648
-
C:\Windows\SysWOW64\nethtsrv.exeC:\Windows\SysWOW64\nethtsrv.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:812
-
C:\Windows\SysWOW64\netupdsrv.exeC:\Windows\SysWOW64\netupdsrv.exe1⤵
- Executes dropped EXE
PID:1652
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
106KB
MD5a64a469f862eff1d120094ee3bb14078
SHA1cbd37cb89ce58ef7d25719fdd3f30831d393a545
SHA2564d44ea66f17f4d924c54c305b5cf915e6950532705cea2bb4f8157b60f2cb3fe
SHA512d95b1f2cf9a42fb9830dfefd17ed9890272a35fd936353c937b0622ff923f1790e565ba131c640ac8224c3b916fb607817c0151647818af7c9cc03fd23d67e01
-
Filesize
244KB
MD5de784ba59cf5c3a087c59db32839c3a4
SHA14b0cfb500d9eae9b467a6c3185671bfe73221df4
SHA256c1a24742d38ea000220d5121990008133538978443146220d96769463038e931
SHA512c661b2f19800fc0aaf1bf6eaeee687662044d6cd254736b8e4c7ce9ff6d15befd050d81d0e18ddb40722bb37b85c1073715c9376dc3a74ad686be800d1ebba1d
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Filesize
108KB
MD5efd1cf1d709490dbae67b5eb9e26eeed
SHA16bb6972fb35b7e42af6cbee60d2abc1f855ca422
SHA2565e1afa1eda4a6d541854591691eb6bbeb3fea3bd735baf9d238cbfe934eadba8
SHA5121ea351d88b20c29ad0e742db13e890017462dfa3842b3e5d2882b11e85ae6d08283315bb461537c260d79febc955745adbdc618160ccb18f7897c417e1c7d7b9
-
Filesize
176KB
MD5562cef5f0926cb7679eb921875a63cd3
SHA190a6bfc90fd80db76bb2a80a3d4cb0c9ad485368
SHA256fcee6989e0c72f938b59d30b55c7f88fd786368907251f821bb76588ebee1ee5
SHA51286d8705f799177622d544857e68d3e15d0657f860c8da2956113b21834dec45740cc17c72afcd100b5d9fc67bfd4e3f94c418d175d832717d30f2474bbe979a1
-
Filesize
176KB
MD5562cef5f0926cb7679eb921875a63cd3
SHA190a6bfc90fd80db76bb2a80a3d4cb0c9ad485368
SHA256fcee6989e0c72f938b59d30b55c7f88fd786368907251f821bb76588ebee1ee5
SHA51286d8705f799177622d544857e68d3e15d0657f860c8da2956113b21834dec45740cc17c72afcd100b5d9fc67bfd4e3f94c418d175d832717d30f2474bbe979a1
-
Filesize
158KB
MD55b9713bc6caba9cc624402660832d676
SHA1b4b336cd59cac20fe4265d55a2c8da033dc4ac6d
SHA256215d4886e84426be5989e1bdcce54c57f9facdae643edead85c3ab21a48b867a
SHA512219361b7d132aacae58a5de58977c86ba10a029c3cd7ce24845dae6b5091c339a4d28677d8043cdeec38f4900accaebd8f844f4c31a42a9a305108497ffd70ce
-
Filesize
158KB
MD55b9713bc6caba9cc624402660832d676
SHA1b4b336cd59cac20fe4265d55a2c8da033dc4ac6d
SHA256215d4886e84426be5989e1bdcce54c57f9facdae643edead85c3ab21a48b867a
SHA512219361b7d132aacae58a5de58977c86ba10a029c3cd7ce24845dae6b5091c339a4d28677d8043cdeec38f4900accaebd8f844f4c31a42a9a305108497ffd70ce
-
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
MD5a64a469f862eff1d120094ee3bb14078
SHA1cbd37cb89ce58ef7d25719fdd3f30831d393a545
SHA2564d44ea66f17f4d924c54c305b5cf915e6950532705cea2bb4f8157b60f2cb3fe
SHA512d95b1f2cf9a42fb9830dfefd17ed9890272a35fd936353c937b0622ff923f1790e565ba131c640ac8224c3b916fb607817c0151647818af7c9cc03fd23d67e01
-
Filesize
106KB
MD5a64a469f862eff1d120094ee3bb14078
SHA1cbd37cb89ce58ef7d25719fdd3f30831d393a545
SHA2564d44ea66f17f4d924c54c305b5cf915e6950532705cea2bb4f8157b60f2cb3fe
SHA512d95b1f2cf9a42fb9830dfefd17ed9890272a35fd936353c937b0622ff923f1790e565ba131c640ac8224c3b916fb607817c0151647818af7c9cc03fd23d67e01
-
Filesize
106KB
MD5a64a469f862eff1d120094ee3bb14078
SHA1cbd37cb89ce58ef7d25719fdd3f30831d393a545
SHA2564d44ea66f17f4d924c54c305b5cf915e6950532705cea2bb4f8157b60f2cb3fe
SHA512d95b1f2cf9a42fb9830dfefd17ed9890272a35fd936353c937b0622ff923f1790e565ba131c640ac8224c3b916fb607817c0151647818af7c9cc03fd23d67e01
-
Filesize
244KB
MD5de784ba59cf5c3a087c59db32839c3a4
SHA14b0cfb500d9eae9b467a6c3185671bfe73221df4
SHA256c1a24742d38ea000220d5121990008133538978443146220d96769463038e931
SHA512c661b2f19800fc0aaf1bf6eaeee687662044d6cd254736b8e4c7ce9ff6d15befd050d81d0e18ddb40722bb37b85c1073715c9376dc3a74ad686be800d1ebba1d
-
Filesize
244KB
MD5de784ba59cf5c3a087c59db32839c3a4
SHA14b0cfb500d9eae9b467a6c3185671bfe73221df4
SHA256c1a24742d38ea000220d5121990008133538978443146220d96769463038e931
SHA512c661b2f19800fc0aaf1bf6eaeee687662044d6cd254736b8e4c7ce9ff6d15befd050d81d0e18ddb40722bb37b85c1073715c9376dc3a74ad686be800d1ebba1d
-
Filesize
108KB
MD5efd1cf1d709490dbae67b5eb9e26eeed
SHA16bb6972fb35b7e42af6cbee60d2abc1f855ca422
SHA2565e1afa1eda4a6d541854591691eb6bbeb3fea3bd735baf9d238cbfe934eadba8
SHA5121ea351d88b20c29ad0e742db13e890017462dfa3842b3e5d2882b11e85ae6d08283315bb461537c260d79febc955745adbdc618160ccb18f7897c417e1c7d7b9
-
Filesize
176KB
MD5562cef5f0926cb7679eb921875a63cd3
SHA190a6bfc90fd80db76bb2a80a3d4cb0c9ad485368
SHA256fcee6989e0c72f938b59d30b55c7f88fd786368907251f821bb76588ebee1ee5
SHA51286d8705f799177622d544857e68d3e15d0657f860c8da2956113b21834dec45740cc17c72afcd100b5d9fc67bfd4e3f94c418d175d832717d30f2474bbe979a1
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Filesize
158KB
MD55b9713bc6caba9cc624402660832d676
SHA1b4b336cd59cac20fe4265d55a2c8da033dc4ac6d
SHA256215d4886e84426be5989e1bdcce54c57f9facdae643edead85c3ab21a48b867a
SHA512219361b7d132aacae58a5de58977c86ba10a029c3cd7ce24845dae6b5091c339a4d28677d8043cdeec38f4900accaebd8f844f4c31a42a9a305108497ffd70ce