457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f

Analysis

max time kernel
234s
max time network
333s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 10:27

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
Size

601KB
MD5

c876c70e064e2cc6d68fe759379f8e35
SHA1

ffaf205327bd6416c0a6f073467d985d913d05c2
SHA256

457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f
SHA512

dd056ad7913c586e774f670a263309d3f92387789cdc2c79a45da1e3c527fedd0c208659c0f1b6e93e1698b9924f58629644e78a42ac22688506809e353d70a9
SSDEEP

12288:zIny5DYTeHvDXlhqcRSTW7VG+L7xDZBKJaKs9jTmG0:bUTWDtsC7VpxDiJaPP0

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe

description ioc process

File created C:\Windows\system32\drivers\nethfdrv.sys 457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
Executes dropped EXE 3 IoCs

Processes:

installd.exenethtsrv.exenetupdsrv.exe

pid process

340 installd.exe
1828 nethtsrv.exe
904 netupdsrv.exe

description	ioc	process
File created	C:\Windows\system32\drivers\nethfdrv.sys	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe

pid	process
340	installd.exe
1828	nethtsrv.exe
904	netupdsrv.exe

Loads dropped DLL 9 IoCs

Processes:

457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exeinstalld.exenethtsrv.exe

pid	process
1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
340	installd.exe
1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
1828	nethtsrv.exe
1828	nethtsrv.exe
1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.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:

457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe

description	ioc	process
File created	C:\Windows\SysWOW64\netupdsrv.exe	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
File created	C:\Windows\SysWOW64\hfnapi.dll	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
File created	C:\Windows\SysWOW64\hfpapi.dll	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
File created	C:\Windows\SysWOW64\installd.exe	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
File created	C:\Windows\SysWOW64\nethtsrv.exe	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe

Drops file in Program Files directory 3 IoCs

Processes:

457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
File created	C:\Program Files (x86)\Common Files\Config\data.xml	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.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

464

pid	process
464

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exenet.exenet.exe

description	pid	process	target process
PID 1520 wrote to memory of 688	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	net.exe
PID 1520 wrote to memory of 688	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	net.exe
PID 1520 wrote to memory of 688	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	net.exe
PID 1520 wrote to memory of 688	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	net.exe
PID 688 wrote to memory of 780	688	net.exe	net1.exe
PID 688 wrote to memory of 780	688	net.exe	net1.exe
PID 688 wrote to memory of 780	688	net.exe	net1.exe
PID 688 wrote to memory of 780	688	net.exe	net1.exe
PID 1520 wrote to memory of 1132	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	net.exe
PID 1520 wrote to memory of 1132	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	net.exe
PID 1520 wrote to memory of 1132	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	net.exe
PID 1520 wrote to memory of 1132	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	net.exe
PID 1132 wrote to memory of 1100	1132	net.exe	net1.exe
PID 1132 wrote to memory of 1100	1132	net.exe	net1.exe
PID 1132 wrote to memory of 1100	1132	net.exe	net1.exe
PID 1132 wrote to memory of 1100	1132	net.exe	net1.exe
PID 1520 wrote to memory of 340	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	installd.exe
PID 1520 wrote to memory of 340	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	installd.exe
PID 1520 wrote to memory of 340	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	installd.exe
PID 1520 wrote to memory of 340	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	installd.exe
PID 1520 wrote to memory of 340	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	installd.exe
PID 1520 wrote to memory of 340	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	installd.exe
PID 1520 wrote to memory of 340	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	installd.exe
PID 1520 wrote to memory of 1828	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	nethtsrv.exe
PID 1520 wrote to memory of 1828	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	nethtsrv.exe
PID 1520 wrote to memory of 1828	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	nethtsrv.exe
PID 1520 wrote to memory of 1828	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	nethtsrv.exe
PID 1520 wrote to memory of 904	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	netupdsrv.exe
PID 1520 wrote to memory of 904	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	netupdsrv.exe
PID 1520 wrote to memory of 904	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	netupdsrv.exe
PID 1520 wrote to memory of 904	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	netupdsrv.exe
PID 1520 wrote to memory of 904	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	netupdsrv.exe
PID 1520 wrote to memory of 904	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	netupdsrv.exe
PID 1520 wrote to memory of 904	1520	457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe	netupdsrv.exe

C:\Users\Admin\AppData\Local\Temp\457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.exe
"C:\Users\Admin\AppData\Local\Temp\457d85069a00a076822774af79d15363a02ca6f57fef648bca1ead6dd243b96f.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:1520

C:\Windows\SysWOW64\net.exe
net stop nethttpservice
2⤵
- Suspicious use of WriteProcessMemory
PID:688

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop nethttpservice
3⤵
PID:780

C:\Windows\SysWOW64\net.exe
net stop serviceupdater
2⤵
- Suspicious use of WriteProcessMemory
PID:1132

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop serviceupdater
3⤵
PID:1100

C:\Windows\SysWOW64\installd.exe
"C:\Windows\system32\installd.exe" nethfdrv
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:340

C:\Windows\SysWOW64\nethtsrv.exe
"C:\Windows\system32\nethtsrv.exe" -nfdi
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1828

C:\Windows\SysWOW64\netupdsrv.exe
"C:\Windows\system32\netupdsrv.exe" -nfdi
2⤵
- Executes dropped EXE
PID:904

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

Loading Replay Monitor...

Downloads

C:\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
d9925c151fcfa29b61248c7aec66802d

SHA1
aa2ce02d4831d3ca9e0768ef4b37596c49bf8cdc

SHA256
a48514e3858cdb75ceb858d4822660e20bf29720455e8be42c56c0449b52e5a9

SHA512
482287a0e0981e60c552bab8e929be6e3ad2bd1ca76f28704c6f918a51ba7f3faccf0a1ca17739027f6f551489cff4ba6d89ebb543161ea936ea6d772544d5f0

Download Submit
C:\Windows\SysWOW64\hfpapi.dll

Filesize
241KB

MD5
ba297e1451a28b014b3e9e69c5cf0646

SHA1
50c72e40a9a7d60b6abe2ab06412dd310fd33fc1

SHA256
bf5dfa8f7de397d6fb89854bd6cb0cfbb7322802d594f150d5731d0e44773f86

SHA512
328580a087062854a0328e102c05166b6e977c48363f68ffece58cf4f5eb3a18e990e18175526f877fe59aa50e9c804bf68060c55607c28e4fa3195736092e93

Download Submit
C:\Windows\SysWOW64\installd.exe

Filesize
108KB

MD5
97d0d14470b3390717456c2664e9acb5

SHA1
a31a5d3e33365eaa2e4065bdd62f0e0f8406202f

SHA256
d93410d024b8f258868c997ca6cb313683a436cd22d93ba45cc80ada0e311326

SHA512
5eaa1f7de491b838104c274bd14e7d2ba4518f1ff31991191fa8739f19881083b02f27cb62571a55bdbf4c1ac21f5c25122847ff27ab7c01608f500cc7e4e51d

Download Submit
C:\Windows\SysWOW64\nethtsrv.exe

Filesize
176KB

MD5
572d8ce08f7bd8c4f26e6739dedaff14

SHA1
4ee1129ed81753f4f437762f7a833a85c13ccb74

SHA256
734815b9fae035d1016c1d6012dbf1090a40b8be403f4c3d1880c8012f6773c4

SHA512
633e98123059ab19d68a8fdaf08aa26ee1f6983d317b619634907e938400b512a209c38eb1df109f7ad153a1ab6ef81e899c7a6b405f871f3e70ca311335ec55

Download Submit
C:\Windows\SysWOW64\netupdsrv.exe

Filesize
158KB

MD5
af4eb2efd245a510afea56bd8f9af6f7

SHA1
1524ec9e4f707ee8b35223ee2e38ee82551d5a92

SHA256
dd9f39acbc03bbdd47bc723be99ca57e7af09ffce345e6b9eda74101d0ce1167

SHA512
57fca996e3706a7441beceb8c99c798ae4e19efeeb3f3469b88bc10d5d7e3e4d2df98f60116fa0d8241007255d14c7e689ec637deabf82178699c9d7ab264632

Download Submit
\Users\Admin\AppData\Local\Temp\nsu18A2.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
\Users\Admin\AppData\Local\Temp\nsu18A2.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
\Users\Admin\AppData\Local\Temp\nsu18A2.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
d9925c151fcfa29b61248c7aec66802d

SHA1
aa2ce02d4831d3ca9e0768ef4b37596c49bf8cdc

SHA256
a48514e3858cdb75ceb858d4822660e20bf29720455e8be42c56c0449b52e5a9

SHA512
482287a0e0981e60c552bab8e929be6e3ad2bd1ca76f28704c6f918a51ba7f3faccf0a1ca17739027f6f551489cff4ba6d89ebb543161ea936ea6d772544d5f0

Download Submit
\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
d9925c151fcfa29b61248c7aec66802d

SHA1
aa2ce02d4831d3ca9e0768ef4b37596c49bf8cdc

SHA256
a48514e3858cdb75ceb858d4822660e20bf29720455e8be42c56c0449b52e5a9

SHA512
482287a0e0981e60c552bab8e929be6e3ad2bd1ca76f28704c6f918a51ba7f3faccf0a1ca17739027f6f551489cff4ba6d89ebb543161ea936ea6d772544d5f0

Download Submit
\Windows\SysWOW64\hfpapi.dll

Filesize
241KB

MD5
ba297e1451a28b014b3e9e69c5cf0646

SHA1
50c72e40a9a7d60b6abe2ab06412dd310fd33fc1

SHA256
bf5dfa8f7de397d6fb89854bd6cb0cfbb7322802d594f150d5731d0e44773f86

SHA512
328580a087062854a0328e102c05166b6e977c48363f68ffece58cf4f5eb3a18e990e18175526f877fe59aa50e9c804bf68060c55607c28e4fa3195736092e93

Download Submit
\Windows\SysWOW64\installd.exe

Filesize
108KB

MD5
97d0d14470b3390717456c2664e9acb5

SHA1
a31a5d3e33365eaa2e4065bdd62f0e0f8406202f

SHA256
d93410d024b8f258868c997ca6cb313683a436cd22d93ba45cc80ada0e311326

SHA512
5eaa1f7de491b838104c274bd14e7d2ba4518f1ff31991191fa8739f19881083b02f27cb62571a55bdbf4c1ac21f5c25122847ff27ab7c01608f500cc7e4e51d

Download Submit
\Windows\SysWOW64\nethtsrv.exe

Filesize
176KB

MD5
572d8ce08f7bd8c4f26e6739dedaff14

SHA1
4ee1129ed81753f4f437762f7a833a85c13ccb74

SHA256
734815b9fae035d1016c1d6012dbf1090a40b8be403f4c3d1880c8012f6773c4

SHA512
633e98123059ab19d68a8fdaf08aa26ee1f6983d317b619634907e938400b512a209c38eb1df109f7ad153a1ab6ef81e899c7a6b405f871f3e70ca311335ec55

Download Submit
\Windows\SysWOW64\netupdsrv.exe

Filesize
158KB

MD5
af4eb2efd245a510afea56bd8f9af6f7

SHA1
1524ec9e4f707ee8b35223ee2e38ee82551d5a92

SHA256
dd9f39acbc03bbdd47bc723be99ca57e7af09ffce345e6b9eda74101d0ce1167

SHA512
57fca996e3706a7441beceb8c99c798ae4e19efeeb3f3469b88bc10d5d7e3e4d2df98f60116fa0d8241007255d14c7e689ec637deabf82178699c9d7ab264632

Download Submit
memory/340-65-0x0000000000000000-mapping.dmp

Download
memory/688-58-0x0000000000000000-mapping.dmp

Download
memory/780-59-0x0000000000000000-mapping.dmp

Download
memory/904-77-0x0000000000000000-mapping.dmp

Download
memory/1100-63-0x0000000000000000-mapping.dmp

Download
memory/1132-62-0x0000000000000000-mapping.dmp

Download
memory/1520-54-0x0000000074DA1000-0x0000000074DA3000-memory.dmp

Filesize
8KB

Download
memory/1520-60-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/1520-55-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/1828-71-0x0000000000000000-mapping.dmp

Download