Analysis
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max time kernel
168s -
max time network
195s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
22-11-2022 00:07
Static task
static1
Behavioral task
behavioral1
Sample
1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe
Resource
win7-20220901-en
Behavioral task
behavioral2
Sample
1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe
Resource
win10v2004-20221111-en
General
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Target
1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe
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Size
602KB
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MD5
469e82590b6468c8905d9d5828bcb99c
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SHA1
08e9663cea14a94c266c85d98856a6a5ee5fba6e
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SHA256
1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391
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SHA512
a1b757c29cfb84c7b3957d6509a9515acdd31555484713dde6f81382114f389485179f973eb3399c3b1b38a2cf37d90d81cdb6bfdaff84363ec237c798316d4b
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SSDEEP
12288:3Iny5DYT26dRG9lzooP3mnMwoH6b02n3PbHpBVkoKfyQYe1CoGXfefmJ:fUT2b9l8nZYG02n/bH/V5KfygGPefm
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 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe -
Executes dropped EXE 5 IoCs
pid Process 4848 installd.exe 4476 nethtsrv.exe 2728 netupdsrv.exe 1772 nethtsrv.exe 3516 netupdsrv.exe -
Loads dropped DLL 14 IoCs
pid Process 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 4848 installd.exe 4476 nethtsrv.exe 4476 nethtsrv.exe 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 1772 nethtsrv.exe 1772 nethtsrv.exe 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.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\hfpapi.dll 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe File created C:\Windows\SysWOW64\installd.exe 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe File created C:\Windows\SysWOW64\nethtsrv.exe 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe File created C:\Windows\SysWOW64\netupdsrv.exe 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe File created C:\Windows\SysWOW64\hfnapi.dll 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe -
Drops file in Program Files directory 3 IoCs
description ioc Process File created C:\Program Files (x86)\Common Files\Config\data.xml 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe File created C:\Program Files (x86)\Common Files\Config\ver.xml 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe File created C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies data under HKEY_USERS 1 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Connections nethtsrv.exe -
Runs net.exe
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Suspicious behavior: LoadsDriver 1 IoCs
pid Process 648 Process not Found -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1772 nethtsrv.exe -
Suspicious use of WriteProcessMemory 33 IoCs
description pid Process procid_target PID 3660 wrote to memory of 4804 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 84 PID 3660 wrote to memory of 4804 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 84 PID 3660 wrote to memory of 4804 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 84 PID 4804 wrote to memory of 3056 4804 net.exe 86 PID 4804 wrote to memory of 3056 4804 net.exe 86 PID 4804 wrote to memory of 3056 4804 net.exe 86 PID 3660 wrote to memory of 4916 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 91 PID 3660 wrote to memory of 4916 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 91 PID 3660 wrote to memory of 4916 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 91 PID 4916 wrote to memory of 3256 4916 net.exe 93 PID 4916 wrote to memory of 3256 4916 net.exe 93 PID 4916 wrote to memory of 3256 4916 net.exe 93 PID 3660 wrote to memory of 4848 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 95 PID 3660 wrote to memory of 4848 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 95 PID 3660 wrote to memory of 4848 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 95 PID 3660 wrote to memory of 4476 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 96 PID 3660 wrote to memory of 4476 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 96 PID 3660 wrote to memory of 4476 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 96 PID 3660 wrote to memory of 2728 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 99 PID 3660 wrote to memory of 2728 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 99 PID 3660 wrote to memory of 2728 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 99 PID 3660 wrote to memory of 4356 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 101 PID 3660 wrote to memory of 4356 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 101 PID 3660 wrote to memory of 4356 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 101 PID 4356 wrote to memory of 420 4356 net.exe 103 PID 4356 wrote to memory of 420 4356 net.exe 103 PID 4356 wrote to memory of 420 4356 net.exe 103 PID 3660 wrote to memory of 4448 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 105 PID 3660 wrote to memory of 4448 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 105 PID 3660 wrote to memory of 4448 3660 1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe 105 PID 4448 wrote to memory of 3788 4448 net.exe 107 PID 4448 wrote to memory of 3788 4448 net.exe 107 PID 4448 wrote to memory of 3788 4448 net.exe 107
Processes
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C:\Users\Admin\AppData\Local\Temp\1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.exe"C:\Users\Admin\AppData\Local\Temp\1f83945a1358e8fc6be3b39808f05a1b9d2113adfe706825597f06d68fabd391.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:3660 -
C:\Windows\SysWOW64\net.exenet stop nethttpservice2⤵
- Suspicious use of WriteProcessMemory
PID:4804 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop nethttpservice3⤵PID:3056
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C:\Windows\SysWOW64\net.exenet stop serviceupdater2⤵
- Suspicious use of WriteProcessMemory
PID:4916 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 stop serviceupdater3⤵PID:3256
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C:\Windows\SysWOW64\installd.exe"C:\Windows\system32\installd.exe" nethfdrv2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:4848
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C:\Windows\SysWOW64\nethtsrv.exe"C:\Windows\system32\nethtsrv.exe" -nfdi2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:4476
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C:\Windows\SysWOW64\netupdsrv.exe"C:\Windows\system32\netupdsrv.exe" -nfdi2⤵
- Executes dropped EXE
PID:2728
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C:\Windows\SysWOW64\net.exenet start nethttpservice2⤵
- Suspicious use of WriteProcessMemory
PID:4356 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 start nethttpservice3⤵PID:420
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C:\Windows\SysWOW64\net.exenet start serviceupdater2⤵
- Suspicious use of WriteProcessMemory
PID:4448 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 start serviceupdater3⤵PID:3788
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C:\Windows\SysWOW64\nethtsrv.exeC:\Windows\SysWOW64\nethtsrv.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1772
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C:\Windows\SysWOW64\netupdsrv.exeC:\Windows\SysWOW64\netupdsrv.exe1⤵
- Executes dropped EXE
PID:3516
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
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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
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
MD5c0746af6dcbbc1a1494926743d0ed9f8
SHA13f010a459c1bce068c8ee4ec5c4f2582c91e7a2c
SHA256892eab053257d6949f0ade9912c0b7980249465346c7c285e2985c6247902a28
SHA51248bc1092fda416715ef1831491c3b5a37cd4467961aad23d6da8d7f37e9d55ae5396d5b074be229713d90b380ddb058de8c74ce8758ec18178b348be740ef1a5
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Filesize
106KB
MD5c0746af6dcbbc1a1494926743d0ed9f8
SHA13f010a459c1bce068c8ee4ec5c4f2582c91e7a2c
SHA256892eab053257d6949f0ade9912c0b7980249465346c7c285e2985c6247902a28
SHA51248bc1092fda416715ef1831491c3b5a37cd4467961aad23d6da8d7f37e9d55ae5396d5b074be229713d90b380ddb058de8c74ce8758ec18178b348be740ef1a5
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Filesize
106KB
MD5c0746af6dcbbc1a1494926743d0ed9f8
SHA13f010a459c1bce068c8ee4ec5c4f2582c91e7a2c
SHA256892eab053257d6949f0ade9912c0b7980249465346c7c285e2985c6247902a28
SHA51248bc1092fda416715ef1831491c3b5a37cd4467961aad23d6da8d7f37e9d55ae5396d5b074be229713d90b380ddb058de8c74ce8758ec18178b348be740ef1a5
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Filesize
106KB
MD5c0746af6dcbbc1a1494926743d0ed9f8
SHA13f010a459c1bce068c8ee4ec5c4f2582c91e7a2c
SHA256892eab053257d6949f0ade9912c0b7980249465346c7c285e2985c6247902a28
SHA51248bc1092fda416715ef1831491c3b5a37cd4467961aad23d6da8d7f37e9d55ae5396d5b074be229713d90b380ddb058de8c74ce8758ec18178b348be740ef1a5
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Filesize
241KB
MD5f2758accedd24fd5598b4539a91eb5b8
SHA1c5171ca12b7c59d564d1613517d67e8fb2606d9e
SHA256473bc0734bfed772630018aa74190ee457bfa4e2860a46df556d4deca3901e00
SHA512ee1d2913e29064ed7953c3dd931518021184d779d4286b9c06b90e6ead27bb64a74021f619f832982b08f89b7451e2685b135fdba8d147bc9753e4e35810e812
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Filesize
241KB
MD5f2758accedd24fd5598b4539a91eb5b8
SHA1c5171ca12b7c59d564d1613517d67e8fb2606d9e
SHA256473bc0734bfed772630018aa74190ee457bfa4e2860a46df556d4deca3901e00
SHA512ee1d2913e29064ed7953c3dd931518021184d779d4286b9c06b90e6ead27bb64a74021f619f832982b08f89b7451e2685b135fdba8d147bc9753e4e35810e812
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Filesize
241KB
MD5f2758accedd24fd5598b4539a91eb5b8
SHA1c5171ca12b7c59d564d1613517d67e8fb2606d9e
SHA256473bc0734bfed772630018aa74190ee457bfa4e2860a46df556d4deca3901e00
SHA512ee1d2913e29064ed7953c3dd931518021184d779d4286b9c06b90e6ead27bb64a74021f619f832982b08f89b7451e2685b135fdba8d147bc9753e4e35810e812
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Filesize
108KB
MD52a2c6cf977b3ea6c642ee8dd502c69f4
SHA123f14cffb60c9e0faf9dca28c826d8f04c0e8f69
SHA256c356f7d98709cfcb487249ae7588a116e143221d20197af1ab5799d616182414
SHA512a3a2b91b81242ed8e4cb7631414d4f790474c09037373a262b8e2908ff5620e3f9a6549a016efda3d4366339292092e28b91e460db76cb6bdefc0c900214fc6a
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Filesize
108KB
MD52a2c6cf977b3ea6c642ee8dd502c69f4
SHA123f14cffb60c9e0faf9dca28c826d8f04c0e8f69
SHA256c356f7d98709cfcb487249ae7588a116e143221d20197af1ab5799d616182414
SHA512a3a2b91b81242ed8e4cb7631414d4f790474c09037373a262b8e2908ff5620e3f9a6549a016efda3d4366339292092e28b91e460db76cb6bdefc0c900214fc6a
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Filesize
176KB
MD5de63e332800bf70d33f23e8a3b715143
SHA15a298b594098a815ef00ec36e2197f6df318c76a
SHA256411b84d964675a4c2f9fccf61303b660471f5565e20133111d543bcaf6a21e58
SHA512ce10e035f5f75c5210b7775faf9de5a66ef1719bd4e2cbccb24d65b002f40c027151b471c3e18f98924ce6e9eb488293a1fed2cd672b18982bc1f6fafcd8584d
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Filesize
176KB
MD5de63e332800bf70d33f23e8a3b715143
SHA15a298b594098a815ef00ec36e2197f6df318c76a
SHA256411b84d964675a4c2f9fccf61303b660471f5565e20133111d543bcaf6a21e58
SHA512ce10e035f5f75c5210b7775faf9de5a66ef1719bd4e2cbccb24d65b002f40c027151b471c3e18f98924ce6e9eb488293a1fed2cd672b18982bc1f6fafcd8584d
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Filesize
176KB
MD5de63e332800bf70d33f23e8a3b715143
SHA15a298b594098a815ef00ec36e2197f6df318c76a
SHA256411b84d964675a4c2f9fccf61303b660471f5565e20133111d543bcaf6a21e58
SHA512ce10e035f5f75c5210b7775faf9de5a66ef1719bd4e2cbccb24d65b002f40c027151b471c3e18f98924ce6e9eb488293a1fed2cd672b18982bc1f6fafcd8584d
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Filesize
158KB
MD5b8917a753905ca993ce02adbfdac0f43
SHA1977aa3adea41e6743ad5c63e9e0b816255364ab0
SHA256cf2e4fbbe4b2d21efdba320f97fe470dc28dbdc860adb5b558109140e945eb59
SHA51265def418b6f7519c1092bd6149c05ff439c5c83a638c70e7268a48b490aebeefe199a90a4c3211a822a911da4cbe3df453cd2baa3a04a27b6fea34ba26ca560e
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Filesize
158KB
MD5b8917a753905ca993ce02adbfdac0f43
SHA1977aa3adea41e6743ad5c63e9e0b816255364ab0
SHA256cf2e4fbbe4b2d21efdba320f97fe470dc28dbdc860adb5b558109140e945eb59
SHA51265def418b6f7519c1092bd6149c05ff439c5c83a638c70e7268a48b490aebeefe199a90a4c3211a822a911da4cbe3df453cd2baa3a04a27b6fea34ba26ca560e
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Filesize
158KB
MD5b8917a753905ca993ce02adbfdac0f43
SHA1977aa3adea41e6743ad5c63e9e0b816255364ab0
SHA256cf2e4fbbe4b2d21efdba320f97fe470dc28dbdc860adb5b558109140e945eb59
SHA51265def418b6f7519c1092bd6149c05ff439c5c83a638c70e7268a48b490aebeefe199a90a4c3211a822a911da4cbe3df453cd2baa3a04a27b6fea34ba26ca560e