Analysis
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max time kernel
28s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
25-11-2022 13:24
Static task
static1
Behavioral task
behavioral1
Sample
f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe
Resource
win10v2004-20221111-en
General
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Target
f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe
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Size
561KB
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MD5
f5a47eb94b22ec8aac30498c99fa8589
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SHA1
50f44b40da9fac80f7a2e7b60cd65e747e8408bd
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SHA256
f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5
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SHA512
aac8ef8532532c4896ce79a47671a0c647761c0453b3912a57cdb7cd025aed2c8daaa186325e9349f38868065d8cc850a061398d46f1a3a1bad130cb3cab381d
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SSDEEP
12288:kPRYzObf4iD7YnRI0V9ubZyuNv+nJJi8W5QgN4LrO+prz+50Ed9:VzCfBD7ERI0V9yyuknviTN4POWz+50Ev
Malware Config
Signatures
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Drops file in Drivers directory 1 IoCs
description ioc Process File created C:\Windows\system32\drivers\nethfdrv.sys f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe -
Executes dropped EXE 5 IoCs
pid Process 960 installd.exe 1012 nethtsrv.exe 328 netupdsrv.exe 524 nethtsrv.exe 676 netupdsrv.exe -
Loads dropped DLL 13 IoCs
pid Process 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 960 installd.exe 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 1012 nethtsrv.exe 1012 nethtsrv.exe 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 524 nethtsrv.exe 524 nethtsrv.exe 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe -
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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Drops file in System32 directory 5 IoCs
description ioc Process File created C:\Windows\SysWOW64\netupdsrv.exe f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe File created C:\Windows\SysWOW64\hfnapi.dll f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe File created C:\Windows\SysWOW64\hfpapi.dll f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe File created C:\Windows\SysWOW64\installd.exe f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe File created C:\Windows\SysWOW64\nethtsrv.exe f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe File created C:\Program Files (x86)\Common Files\Config\data.xml f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe File created C:\Program Files (x86)\Common Files\Config\ver.xml f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Runs net.exe
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Suspicious behavior: LoadsDriver 1 IoCs
pid Process 464 Process not Found -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 524 nethtsrv.exe -
Suspicious use of WriteProcessMemory 50 IoCs
description pid Process procid_target PID 1388 wrote to memory of 1328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 27 PID 1388 wrote to memory of 1328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 27 PID 1388 wrote to memory of 1328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 27 PID 1388 wrote to memory of 1328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 27 PID 1328 wrote to memory of 1316 1328 net.exe 29 PID 1328 wrote to memory of 1316 1328 net.exe 29 PID 1328 wrote to memory of 1316 1328 net.exe 29 PID 1328 wrote to memory of 1316 1328 net.exe 29 PID 1388 wrote to memory of 860 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 30 PID 1388 wrote to memory of 860 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 30 PID 1388 wrote to memory of 860 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 30 PID 1388 wrote to memory of 860 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 30 PID 860 wrote to memory of 1744 860 net.exe 32 PID 860 wrote to memory of 1744 860 net.exe 32 PID 860 wrote to memory of 1744 860 net.exe 32 PID 860 wrote to memory of 1744 860 net.exe 32 PID 1388 wrote to memory of 960 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 33 PID 1388 wrote to memory of 960 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 33 PID 1388 wrote to memory of 960 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 33 PID 1388 wrote to memory of 960 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 33 PID 1388 wrote to memory of 960 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 33 PID 1388 wrote to memory of 960 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 33 PID 1388 wrote to memory of 960 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 33 PID 1388 wrote to memory of 1012 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 35 PID 1388 wrote to memory of 1012 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 35 PID 1388 wrote to memory of 1012 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 35 PID 1388 wrote to memory of 1012 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 35 PID 1388 wrote to memory of 328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 37 PID 1388 wrote to memory of 328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 37 PID 1388 wrote to memory of 328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 37 PID 1388 wrote to memory of 328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 37 PID 1388 wrote to memory of 328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 37 PID 1388 wrote to memory of 328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 37 PID 1388 wrote to memory of 328 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 37 PID 1388 wrote to memory of 1964 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 39 PID 1388 wrote to memory of 1964 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 39 PID 1388 wrote to memory of 1964 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 39 PID 1388 wrote to memory of 1964 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 39 PID 1964 wrote to memory of 1828 1964 net.exe 41 PID 1964 wrote to memory of 1828 1964 net.exe 41 PID 1964 wrote to memory of 1828 1964 net.exe 41 PID 1964 wrote to memory of 1828 1964 net.exe 41 PID 1388 wrote to memory of 1692 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 43 PID 1388 wrote to memory of 1692 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 43 PID 1388 wrote to memory of 1692 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 43 PID 1388 wrote to memory of 1692 1388 f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe 43 PID 1692 wrote to memory of 436 1692 net.exe 45 PID 1692 wrote to memory of 436 1692 net.exe 45 PID 1692 wrote to memory of 436 1692 net.exe 45 PID 1692 wrote to memory of 436 1692 net.exe 45
Processes
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C:\Users\Admin\AppData\Local\Temp\f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.exe"C:\Users\Admin\AppData\Local\Temp\f3c05b66df5cedab90be62300ff6479e6bcb71825f8b313aad2ccb43613056a5.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:1388 -
C:\Windows\SysWOW64\net.exenet stop nethttpservice2⤵
- Suspicious use of WriteProcessMemory
PID:1328 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop nethttpservice3⤵PID:1316
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C:\Windows\SysWOW64\net.exenet stop serviceupdater2⤵
- Suspicious use of WriteProcessMemory
PID:860 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop serviceupdater3⤵PID:1744
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C:\Windows\SysWOW64\installd.exe"C:\Windows\system32\installd.exe" nethfdrv2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:960
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C:\Windows\SysWOW64\nethtsrv.exe"C:\Windows\system32\nethtsrv.exe" -nfdi2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1012
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C:\Windows\SysWOW64\netupdsrv.exe"C:\Windows\system32\netupdsrv.exe" -nfdi2⤵
- Executes dropped EXE
PID:328
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C:\Windows\SysWOW64\net.exenet start nethttpservice2⤵
- Suspicious use of WriteProcessMemory
PID:1964 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 start nethttpservice3⤵PID:1828
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C:\Windows\SysWOW64\net.exenet start serviceupdater2⤵
- Suspicious use of WriteProcessMemory
PID:1692 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 start serviceupdater3⤵PID:436
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C:\Windows\SysWOW64\nethtsrv.exeC:\Windows\SysWOW64\nethtsrv.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
PID:524
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C:\Windows\SysWOW64\netupdsrv.exeC:\Windows\SysWOW64\netupdsrv.exe1⤵
- Executes dropped EXE
PID:676
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
106KB
MD533381638aac9ace0b6dc339d5247a9a6
SHA11ae6c37a64cb9bbc80a9b8b4adf3f7291c2974c5
SHA256bc2308bd2481de6564afdb8a68b376ee6662d144b12620fd3333b7aac5f214d2
SHA512443d4e51494375eb511ef2f46fb1d94790b6be6c8d378a9217c561ea35e083d66b21b5c8cb6c78e04903146329b71fe594646fff41ad9a8ad27eece2dd046c60
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Filesize
244KB
MD5350c39c3d10efcb356682a8c59493c9c
SHA1cb677b9d1cf27afa9402d65e09cc3a6a2dab8a2a
SHA256eb18e8322f5e3a7f1a8e8d4ad0ddeff22613c9344337d55c0fb01fa00bf83fef
SHA512c2e33ad3b8190937cbdae2862d0e0b328ae5aab906d15e20043724988a84b451eb1191ab61c4248be8b8ebd1e5f92555b9a67c9e9718143b022b13b5aa2227f3
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Filesize
108KB
MD5e507a0c7323c660fc63b6e66f699dd60
SHA1837e32a56e3b159654773fc4b8ed2b3833626a1a
SHA2560bcb6495b1fc2e25a8136b8a9a9f59a9b12a3f6781b04e7583624250630a172a
SHA512a6e7875c45182de68e63c8f3e142d52d5ecb9ee71fd9655131d861efd60b7e42fa8f651712f7cd217e87c3e6e130fefda65deb724d41d770cbebfff0c6b1e3f8
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Filesize
176KB
MD51a085a1b2f815bd3ac60114a15237b08
SHA14f7cf5f89f181e494ddb19fc68c9aca6b93fbfa4
SHA256810c65452fe7dfe41bf78cb84e6f1de1d14bd08a6f9d583b7732f37a423aba49
SHA51281a6fe657f5de34df63c821cace77e19856a6ce27566bf546819b8313e2e87984440789908da2e3f182b0b72bb50ad9e884cdd8bd2537422eefa5ddd06af3714
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Filesize
176KB
MD51a085a1b2f815bd3ac60114a15237b08
SHA14f7cf5f89f181e494ddb19fc68c9aca6b93fbfa4
SHA256810c65452fe7dfe41bf78cb84e6f1de1d14bd08a6f9d583b7732f37a423aba49
SHA51281a6fe657f5de34df63c821cace77e19856a6ce27566bf546819b8313e2e87984440789908da2e3f182b0b72bb50ad9e884cdd8bd2537422eefa5ddd06af3714
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Filesize
158KB
MD5c04ebd983773765d48f51379c22f0b06
SHA1dd0c43d3c7538b1ae274fbb4631272a6584d34d8
SHA2561d6f96647bfa6053ef0926fd89df40d98388ba6976b624f4f0677efe6d2d0b48
SHA5125502873ddae1146d98da0adad26ca04929763c33a1352edbbb9187c13867524ec59a002e1288ce72170cc830b3efa7f9cdcc92adc62f8e4af8235f97d727fdd0
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Filesize
158KB
MD5c04ebd983773765d48f51379c22f0b06
SHA1dd0c43d3c7538b1ae274fbb4631272a6584d34d8
SHA2561d6f96647bfa6053ef0926fd89df40d98388ba6976b624f4f0677efe6d2d0b48
SHA5125502873ddae1146d98da0adad26ca04929763c33a1352edbbb9187c13867524ec59a002e1288ce72170cc830b3efa7f9cdcc92adc62f8e4af8235f97d727fdd0
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Filesize
11KB
MD5c17103ae9072a06da581dec998343fc1
SHA1b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d
SHA256dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f
SHA512d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f
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Filesize
6KB
MD5acc2b699edfea5bf5aae45aba3a41e96
SHA1d2accf4d494e43ceb2cff69abe4dd17147d29cc2
SHA256168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
SHA512e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe
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Filesize
6KB
MD5acc2b699edfea5bf5aae45aba3a41e96
SHA1d2accf4d494e43ceb2cff69abe4dd17147d29cc2
SHA256168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
SHA512e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe
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Filesize
6KB
MD5acc2b699edfea5bf5aae45aba3a41e96
SHA1d2accf4d494e43ceb2cff69abe4dd17147d29cc2
SHA256168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
SHA512e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe
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Filesize
6KB
MD5acc2b699edfea5bf5aae45aba3a41e96
SHA1d2accf4d494e43ceb2cff69abe4dd17147d29cc2
SHA256168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e
SHA512e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe
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Filesize
106KB
MD533381638aac9ace0b6dc339d5247a9a6
SHA11ae6c37a64cb9bbc80a9b8b4adf3f7291c2974c5
SHA256bc2308bd2481de6564afdb8a68b376ee6662d144b12620fd3333b7aac5f214d2
SHA512443d4e51494375eb511ef2f46fb1d94790b6be6c8d378a9217c561ea35e083d66b21b5c8cb6c78e04903146329b71fe594646fff41ad9a8ad27eece2dd046c60
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Filesize
106KB
MD533381638aac9ace0b6dc339d5247a9a6
SHA11ae6c37a64cb9bbc80a9b8b4adf3f7291c2974c5
SHA256bc2308bd2481de6564afdb8a68b376ee6662d144b12620fd3333b7aac5f214d2
SHA512443d4e51494375eb511ef2f46fb1d94790b6be6c8d378a9217c561ea35e083d66b21b5c8cb6c78e04903146329b71fe594646fff41ad9a8ad27eece2dd046c60
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Filesize
106KB
MD533381638aac9ace0b6dc339d5247a9a6
SHA11ae6c37a64cb9bbc80a9b8b4adf3f7291c2974c5
SHA256bc2308bd2481de6564afdb8a68b376ee6662d144b12620fd3333b7aac5f214d2
SHA512443d4e51494375eb511ef2f46fb1d94790b6be6c8d378a9217c561ea35e083d66b21b5c8cb6c78e04903146329b71fe594646fff41ad9a8ad27eece2dd046c60
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Filesize
244KB
MD5350c39c3d10efcb356682a8c59493c9c
SHA1cb677b9d1cf27afa9402d65e09cc3a6a2dab8a2a
SHA256eb18e8322f5e3a7f1a8e8d4ad0ddeff22613c9344337d55c0fb01fa00bf83fef
SHA512c2e33ad3b8190937cbdae2862d0e0b328ae5aab906d15e20043724988a84b451eb1191ab61c4248be8b8ebd1e5f92555b9a67c9e9718143b022b13b5aa2227f3
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Filesize
244KB
MD5350c39c3d10efcb356682a8c59493c9c
SHA1cb677b9d1cf27afa9402d65e09cc3a6a2dab8a2a
SHA256eb18e8322f5e3a7f1a8e8d4ad0ddeff22613c9344337d55c0fb01fa00bf83fef
SHA512c2e33ad3b8190937cbdae2862d0e0b328ae5aab906d15e20043724988a84b451eb1191ab61c4248be8b8ebd1e5f92555b9a67c9e9718143b022b13b5aa2227f3
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Filesize
108KB
MD5e507a0c7323c660fc63b6e66f699dd60
SHA1837e32a56e3b159654773fc4b8ed2b3833626a1a
SHA2560bcb6495b1fc2e25a8136b8a9a9f59a9b12a3f6781b04e7583624250630a172a
SHA512a6e7875c45182de68e63c8f3e142d52d5ecb9ee71fd9655131d861efd60b7e42fa8f651712f7cd217e87c3e6e130fefda65deb724d41d770cbebfff0c6b1e3f8
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Filesize
176KB
MD51a085a1b2f815bd3ac60114a15237b08
SHA14f7cf5f89f181e494ddb19fc68c9aca6b93fbfa4
SHA256810c65452fe7dfe41bf78cb84e6f1de1d14bd08a6f9d583b7732f37a423aba49
SHA51281a6fe657f5de34df63c821cace77e19856a6ce27566bf546819b8313e2e87984440789908da2e3f182b0b72bb50ad9e884cdd8bd2537422eefa5ddd06af3714
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Filesize
158KB
MD5c04ebd983773765d48f51379c22f0b06
SHA1dd0c43d3c7538b1ae274fbb4631272a6584d34d8
SHA2561d6f96647bfa6053ef0926fd89df40d98388ba6976b624f4f0677efe6d2d0b48
SHA5125502873ddae1146d98da0adad26ca04929763c33a1352edbbb9187c13867524ec59a002e1288ce72170cc830b3efa7f9cdcc92adc62f8e4af8235f97d727fdd0