fc4623b113a1f603c0d9ad5f83130bd6de1c62b973be9892305132389c8588de

Analysis

max time kernel
77s
max time network
75s
platform
windows10-1703_x64
resource
win10-20230220-en
resource tags

arch:x64arch:x86image:win10-20230220-enlocale:en-usos:windows10-1703-x64system
submitted
07-03-2023 19:20

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General

Target

WinPcap_4_1_3.exe
Size

893KB
MD5

a11a2f0cfe6d0b4c50945989db6360cd
SHA1

e2516fcd1573e70334c8f50bee5241cdfdf48a00
SHA256

fc4623b113a1f603c0d9ad5f83130bd6de1c62b973be9892305132389c8588de
SHA512

2652d84eb91ca7957b4fb3ff77313e5dae978960492669242df4f246296f1bedaa48c0d33ffb286b2859a1b86ef5460060b551edca597b4ec60ee08676877c70
SSDEEP

24576:UBOldyR6ORWsaM2QROxa6jsqUENfJjNK/CG6niqiL:2KzqWsayROxa6QDENuaG+ifL

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

WinPcap_4_1_3.exe

description ioc process

File created C:\Windows\system32\drivers\npf.sys WinPcap_4_1_3.exe

description	ioc	process
File created	C:\Windows\system32\drivers\npf.sys	WinPcap_4_1_3.exe

Loads dropped DLL 11 IoCs

Processes:

WinPcap_4_1_3.exe

pid	process
4108	WinPcap_4_1_3.exe
4108	WinPcap_4_1_3.exe
4108	WinPcap_4_1_3.exe
4108	WinPcap_4_1_3.exe
4108	WinPcap_4_1_3.exe
4108	WinPcap_4_1_3.exe
4108	WinPcap_4_1_3.exe
4108	WinPcap_4_1_3.exe
4108	WinPcap_4_1_3.exe
4108	WinPcap_4_1_3.exe
4108	WinPcap_4_1_3.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in System32 directory 5 IoCs

Processes:

WinPcap_4_1_3.exe

description	ioc	process
File created	C:\Windows\SysWOW64\wpcap.dll	WinPcap_4_1_3.exe
File created	C:\Windows\SysWOW64\pthreadVC.dll	WinPcap_4_1_3.exe
File created	C:\Windows\SysWOW64\Packet.dll	WinPcap_4_1_3.exe
File created	C:\Windows\system32\wpcap.dll	WinPcap_4_1_3.exe
File created	C:\Windows\system32\Packet.dll	WinPcap_4_1_3.exe

Drops file in Program Files directory 5 IoCs

Processes:

WinPcap_4_1_3.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\WinPcap\WinPcapInstall.dll	WinPcap_4_1_3.exe
File created	C:\Program Files (x86)\WinPcap\install.log	WinPcap_4_1_3.exe
File created	C:\Program Files (x86)\WinPcap\rpcapd.exe	WinPcap_4_1_3.exe
File created	C:\Program Files (x86)\WinPcap\WinPcapInstall.dll	WinPcap_4_1_3.exe
File created	C:\Program Files (x86)\WinPcap\Uninstall.exe	WinPcap_4_1_3.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Runs net.exe
Suspicious behavior: LoadsDriver 1 IoCs

Processes:

pid process

652

pid	process
652

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

WinPcap_4_1_3.exenet.exe

description	pid	process	target process
PID 4108 wrote to memory of 4068	4108	WinPcap_4_1_3.exe	net.exe
PID 4108 wrote to memory of 4068	4108	WinPcap_4_1_3.exe	net.exe
PID 4108 wrote to memory of 4068	4108	WinPcap_4_1_3.exe	net.exe
PID 4068 wrote to memory of 5116	4068	net.exe	net1.exe
PID 4068 wrote to memory of 5116	4068	net.exe	net1.exe
PID 4068 wrote to memory of 5116	4068	net.exe	net1.exe

C:\Users\Admin\AppData\Local\Temp\WinPcap_4_1_3.exe
"C:\Users\Admin\AppData\Local\Temp\WinPcap_4_1_3.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:4108

C:\Windows\SysWOW64\net.exe
net start npf
2⤵
- Suspicious use of WriteProcessMemory
PID:4068

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 start npf
3⤵
PID:5116

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\WinPcap\WinPcapInstall.dll

Filesize
91KB

MD5
e78291558cb803dfd091ad8fb56feecc

SHA1
4bde2f87e903fe8d3bd80179c5584cec7a8cbdc4

SHA256
d9f4cd9f0e1bc9a138fb4da6f83c92c3e86eb3de4f988d5943d75c9b1dc6bb9d

SHA512
042b96bc2c0e6d8b6e2730426938eb7400fd833be8a108a4942f559fedefabc35fd5dcb7ea1898d377b4382c0a9af8eeeebd663a4c852c706e3bd168c1f1f62f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\ExecDos.dll

Filesize
5KB

MD5
a7cd6206240484c8436c66afb12bdfbf

SHA1
0bb3e24a7eb0a9e5a8eae06b1c6e7551a7ec9919

SHA256
69ac56d2fdf3c71b766d3cc49b33b36f1287cc2503310811017467dfcb455926

SHA512
b9ee7803301e50a8ec20ab3f87eb9e509ea24d11a69e90005f30c1666acc4ed0a208bd56e372e2e5c6a6d901d45f04a12427303d74761983593d10b344c79904

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\InstallOptions.dll

Filesize
14KB

MD5
325b008aec81e5aaa57096f05d4212b5

SHA1
27a2d89747a20305b6518438eff5b9f57f7df5c3

SHA256
c9cd5c9609e70005926ae5171726a4142ffbcccc771d307efcd195dafc1e6b4b

SHA512
18362b3aee529a27e85cc087627ecf6e2d21196d725f499c4a185cb3a380999f43ff1833a8ebec3f5ba1d3a113ef83185770e663854121f2d8b885790115afdf

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\UserInfo.dll

Filesize
4KB

MD5
7579ade7ae1747a31960a228ce02e666

SHA1
8ec8571a296737e819dcf86353a43fcf8ec63351

SHA256
564c80dec62d76c53497c40094db360ff8a36e0dc1bda8383d0f9583138997f5

SHA512
a88bc56e938374c333b0e33cb72951635b5d5a98b9cb2d6785073cbcad23bf4c0f9f69d3b7e87b46c76eb03ced9bb786844ce87656a9e3df4ca24acf43d7a05b

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\bootOptions.ini

Filesize
349B

MD5
73461ff69941beefb0f5630b29b5ae2e

SHA1
f8f33b309db03f1bc5a9fd452150245474c000f1

SHA256
81a27757de2fa404014be9a73f502537628f82a3da3f809b1ff5584a828910b8

SHA512
38b3a21683bb30cc301406e2f12d0cf916299a4618af552f9e01b1b0fecddf22c79e37f7aaf3f2a85706a263049d10c17ccc417fa9c07f8b74c28284a02da460

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\bootOptions.ini

Filesize
371B

MD5
6185a19077037934bda8e63732405e7d

SHA1
280e774f9174ec1441e3451863d3fc847d42f40c

SHA256
9683fb10b98403142fbd01a235a647c9e5c71dca684a3fb2c463bb0af8ad2222

SHA512
8102fd122d5c7400e99bbe89eadf66969690cf09496a02a1b5ccee2ebccf14c9a2c4c88139cf0fe5cfc39d7ec5783a2e7b4d6474da2128ac2b2f858f58c8c5e8

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\ioSpecial.ini

Filesize
578B

MD5
0c13e2f80143043390bbcd88918b424f

SHA1
6fbb7d09613a8bf38590ad525556f5d16e6d5041

SHA256
034eb6cdaab68b2352af4052eaa00a12bc3692ac539f8c8b8965c18a561cf5aa

SHA512
1458b636994b6182e6eab21a1ccb8f4fcb2515f8bd28e81241e590176431f838a4b6622d1ac1508bce31dbd0a3f90a22bd127c489441a382e029532010770221

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\ioSpecial.ini

Filesize
626B

MD5
057326ddeca2f998504febbfbaf4d1a3

SHA1
d10cf3cc5b793ff1c33cc66d3120a94896d1cc01

SHA256
676d2f824e639ba616d1cbe7f829f81fa174e17f515da77469236957cc650fe2

SHA512
dd90200d731dbdb2615f428850611dd5c25457c080fbe2ad81f972cd3ecf86100a5d104bbb19a05c75d93de40e869ad79be918f4586cd90ca86169e9e231726e

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\ioSpecial.ini

Filesize
626B

MD5
f02529512586e5ebca6b9b9a8ea474f8

SHA1
f69bf33bdd5cb97ed9bf83167db5f8c4ede81c09

SHA256
bea31520c4d9286c166d6cccb6107baa98d75c27290b79ad33d3f66baab04455

SHA512
683ec8770453af6a2b7ee5efba94d5c40fdb50ce2d697ba6d5bae80e355286be653a0ec576327c8703dbad237534dccbe7bda0721160ed93456fefa1095d5c0e

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\ioSpecial.ini

Filesize
556B

MD5
9a4e1a4761cb8df6f700afa956051ab8

SHA1
b9d0462f2ca0705fd6f9765c613e284a42831142

SHA256
e8a9a3150a5e70bfadd16d7d98208d7fc334c18ed729dd15bca061ef7f051aa7

SHA512
c79d0e4950735d94354c6a7106e566d58c6df1bb844f246879b08947ca7c47b60173449d641587435457551432b73032c66906ebf31797cab7912b99945fd1b2

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\ioSpecial.ini

Filesize
556B

MD5
9e64f573e3787a3991be6e7d429e95f8

SHA1
b11855932fef27279ad5efec9e5956641115d3eb

SHA256
775cc666179982eef57d3b00174f927c01e1ad192427985e3cbc7fb5c57e6bf5

SHA512
f5cf4fb3e6fcb80577d92c464556a5184621cd7be5b09fde7c629508754ae80e4c28dbe3794361972a27c92ee6de0210f3703473859091a3e4e13188bfc314ac

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso527B.tmp\modern-wizard.bmp

Filesize
25KB

MD5
cbe40fd2b1ec96daedc65da172d90022

SHA1
366c216220aa4329dff6c485fd0e9b0f4f0a7944

SHA256
3ad2dc318056d0a2024af1804ea741146cfc18cc404649a44610cbf8b2056cf2

SHA512
62990cb16e37b6b4eff6ab03571c3a82dcaa21a1d393c3cb01d81f62287777fb0b4b27f8852b5fa71bc975feab5baa486d33f2c58660210e115de7e2bd34ea63

Download Submit
\Program Files (x86)\WinPcap\WinPcapInstall.dll

Filesize
91KB

MD5
e78291558cb803dfd091ad8fb56feecc

SHA1
4bde2f87e903fe8d3bd80179c5584cec7a8cbdc4

SHA256
d9f4cd9f0e1bc9a138fb4da6f83c92c3e86eb3de4f988d5943d75c9b1dc6bb9d

SHA512
042b96bc2c0e6d8b6e2730426938eb7400fd833be8a108a4942f559fedefabc35fd5dcb7ea1898d377b4382c0a9af8eeeebd663a4c852c706e3bd168c1f1f62f

Download Submit
\Program Files (x86)\WinPcap\WinPcapInstall.dll

Filesize
91KB

MD5
e78291558cb803dfd091ad8fb56feecc

SHA1
4bde2f87e903fe8d3bd80179c5584cec7a8cbdc4

SHA256
d9f4cd9f0e1bc9a138fb4da6f83c92c3e86eb3de4f988d5943d75c9b1dc6bb9d

SHA512
042b96bc2c0e6d8b6e2730426938eb7400fd833be8a108a4942f559fedefabc35fd5dcb7ea1898d377b4382c0a9af8eeeebd663a4c852c706e3bd168c1f1f62f

Download Submit
\Program Files (x86)\WinPcap\WinPcapInstall.dll

Filesize
91KB

MD5
e78291558cb803dfd091ad8fb56feecc

SHA1
4bde2f87e903fe8d3bd80179c5584cec7a8cbdc4

SHA256
d9f4cd9f0e1bc9a138fb4da6f83c92c3e86eb3de4f988d5943d75c9b1dc6bb9d

SHA512
042b96bc2c0e6d8b6e2730426938eb7400fd833be8a108a4942f559fedefabc35fd5dcb7ea1898d377b4382c0a9af8eeeebd663a4c852c706e3bd168c1f1f62f

Download Submit
\Program Files (x86)\WinPcap\WinPcapInstall.dll

Filesize
91KB

MD5
e78291558cb803dfd091ad8fb56feecc

SHA1
4bde2f87e903fe8d3bd80179c5584cec7a8cbdc4

SHA256
d9f4cd9f0e1bc9a138fb4da6f83c92c3e86eb3de4f988d5943d75c9b1dc6bb9d

SHA512
042b96bc2c0e6d8b6e2730426938eb7400fd833be8a108a4942f559fedefabc35fd5dcb7ea1898d377b4382c0a9af8eeeebd663a4c852c706e3bd168c1f1f62f

Download Submit
\Users\Admin\AppData\Local\Temp\nso527B.tmp\ExecDos.dll

Filesize
5KB

MD5
a7cd6206240484c8436c66afb12bdfbf

SHA1
0bb3e24a7eb0a9e5a8eae06b1c6e7551a7ec9919

SHA256
69ac56d2fdf3c71b766d3cc49b33b36f1287cc2503310811017467dfcb455926

SHA512
b9ee7803301e50a8ec20ab3f87eb9e509ea24d11a69e90005f30c1666acc4ed0a208bd56e372e2e5c6a6d901d45f04a12427303d74761983593d10b344c79904

Download Submit
\Users\Admin\AppData\Local\Temp\nso527B.tmp\ExecDos.dll

Filesize
5KB

MD5
a7cd6206240484c8436c66afb12bdfbf

SHA1
0bb3e24a7eb0a9e5a8eae06b1c6e7551a7ec9919

SHA256
69ac56d2fdf3c71b766d3cc49b33b36f1287cc2503310811017467dfcb455926

SHA512
b9ee7803301e50a8ec20ab3f87eb9e509ea24d11a69e90005f30c1666acc4ed0a208bd56e372e2e5c6a6d901d45f04a12427303d74761983593d10b344c79904

Download Submit
\Users\Admin\AppData\Local\Temp\nso527B.tmp\InstallOptions.dll

Filesize
14KB

MD5
325b008aec81e5aaa57096f05d4212b5

SHA1
27a2d89747a20305b6518438eff5b9f57f7df5c3

SHA256
c9cd5c9609e70005926ae5171726a4142ffbcccc771d307efcd195dafc1e6b4b

SHA512
18362b3aee529a27e85cc087627ecf6e2d21196d725f499c4a185cb3a380999f43ff1833a8ebec3f5ba1d3a113ef83185770e663854121f2d8b885790115afdf

Download Submit
\Users\Admin\AppData\Local\Temp\nso527B.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
\Users\Admin\AppData\Local\Temp\nso527B.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
\Users\Admin\AppData\Local\Temp\nso527B.tmp\UserInfo.dll

Filesize
4KB

MD5
7579ade7ae1747a31960a228ce02e666

SHA1
8ec8571a296737e819dcf86353a43fcf8ec63351

SHA256
564c80dec62d76c53497c40094db360ff8a36e0dc1bda8383d0f9583138997f5

SHA512
a88bc56e938374c333b0e33cb72951635b5d5a98b9cb2d6785073cbcad23bf4c0f9f69d3b7e87b46c76eb03ced9bb786844ce87656a9e3df4ca24acf43d7a05b

Download Submit
\Users\Admin\AppData\Local\Temp\nso527B.tmp\UserInfo.dll

Filesize
4KB

MD5
7579ade7ae1747a31960a228ce02e666

SHA1
8ec8571a296737e819dcf86353a43fcf8ec63351

SHA256
564c80dec62d76c53497c40094db360ff8a36e0dc1bda8383d0f9583138997f5

SHA512
a88bc56e938374c333b0e33cb72951635b5d5a98b9cb2d6785073cbcad23bf4c0f9f69d3b7e87b46c76eb03ced9bb786844ce87656a9e3df4ca24acf43d7a05b

Download Submit
memory/4108-361-0x0000000004CA0000-0x0000000004CB6000-memory.dmp

Filesize
88KB

Download