cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39

Analysis

max time kernel
384s
max time network
422s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 10:52

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General

Target

cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
Size

445KB
MD5

a268c3cc2a33a90606c9a5fdf7a24707
SHA1

6eefae8892f4f5618ebb259600006b15c266e234
SHA256

cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39
SHA512

ed110ae0043965666b15419dfbdf48262683fe62e46e8b98f5ae8f2efaa5f2ea4eec7f8c92e1af12d54010988335499614d03490608b8cd7bd3ee9b24b0c4a6b
SSDEEP

12288:IFUFjW9HB7Gw9EFoBNqEZsik7+hyz3ymEbqN:IFUFq9H0RyBFmJQey9bE

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe

description ioc process

File created C:\Windows\system32\drivers\nethfdrv.sys cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
Executes dropped EXE 2 IoCs

Processes:

installd.exenethtsrv.exe

pid process

2776 installd.exe
2672 nethtsrv.exe

description	ioc	process
File created	C:\Windows\system32\drivers\nethfdrv.sys	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe

pid	process
2776	installd.exe
2672	nethtsrv.exe

Loads dropped DLL 8 IoCs

Processes:

cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exeinstalld.exenethtsrv.exe

pid	process
4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
2776	installd.exe
2672	nethtsrv.exe
2672	nethtsrv.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:

cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe

description	ioc	process
File created	C:\Windows\SysWOW64\hfpapi.dll	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
File created	C:\Windows\SysWOW64\installd.exe	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
File created	C:\Windows\SysWOW64\nethtsrv.exe	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
File created	C:\Windows\SysWOW64\netupdsrv.exe	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
File created	C:\Windows\SysWOW64\hfnapi.dll	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe

Drops file in Program Files directory 3 IoCs

Processes:

cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
File created	C:\Program Files (x86)\Common Files\Config\data.xml	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.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

656

pid	process
656

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exenet.exenet.exe

description	pid	process	target process
PID 4968 wrote to memory of 2296	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	net.exe
PID 4968 wrote to memory of 2296	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	net.exe
PID 4968 wrote to memory of 2296	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	net.exe
PID 2296 wrote to memory of 1472	2296	net.exe	net1.exe
PID 2296 wrote to memory of 1472	2296	net.exe	net1.exe
PID 2296 wrote to memory of 1472	2296	net.exe	net1.exe
PID 4968 wrote to memory of 312	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	net.exe
PID 4968 wrote to memory of 312	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	net.exe
PID 4968 wrote to memory of 312	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	net.exe
PID 312 wrote to memory of 4160	312	net.exe	net1.exe
PID 312 wrote to memory of 4160	312	net.exe	net1.exe
PID 312 wrote to memory of 4160	312	net.exe	net1.exe
PID 4968 wrote to memory of 2776	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	installd.exe
PID 4968 wrote to memory of 2776	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	installd.exe
PID 4968 wrote to memory of 2776	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	installd.exe
PID 4968 wrote to memory of 2672	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	nethtsrv.exe
PID 4968 wrote to memory of 2672	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	nethtsrv.exe
PID 4968 wrote to memory of 2672	4968	cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe	nethtsrv.exe

C:\Users\Admin\AppData\Local\Temp\cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.exe
"C:\Users\Admin\AppData\Local\Temp\cc31774b41eac2a9570c68d788bd1a95d730a1eab2254b6759074917abe61a39.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:4968

C:\Windows\SysWOW64\net.exe
net stop nethttpservice
2⤵
- Suspicious use of WriteProcessMemory
PID:2296

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop nethttpservice
3⤵
PID:1472

C:\Windows\SysWOW64\net.exe
net stop serviceupdater
2⤵
- Suspicious use of WriteProcessMemory
PID:312

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop serviceupdater
3⤵
PID:4160

C:\Windows\SysWOW64\installd.exe
"C:\Windows\system32\installd.exe" nethfdrv
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2776

C:\Windows\SysWOW64\nethtsrv.exe
"C:\Windows\system32\nethtsrv.exe" -nfdi
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2672

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:\Users\Admin\AppData\Local\Temp\nsj151D.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsj151D.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsj151D.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsj151D.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsj151D.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

Filesize
106KB

MD5
a7960ee34b77ecf61ea3a9aa25a1eac8

SHA1
e6ce0fca873a4526c50bc1f791b67f78ec58c5da

SHA256
bf1dae8a34c6a15d966fd73e2e5a1473a222c0904ec22519ebbc49372d981805

SHA512
b90e025616e44eb451d26c3bc2d1a895fa9dd96d2804d995dee4e060c07929f4bbc96d40f0a0aafbb4352efbc31c096dfd55f02d9e764341fda5917aaeecd039

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

Filesize
106KB

MD5
a7960ee34b77ecf61ea3a9aa25a1eac8

SHA1
e6ce0fca873a4526c50bc1f791b67f78ec58c5da

SHA256
bf1dae8a34c6a15d966fd73e2e5a1473a222c0904ec22519ebbc49372d981805

SHA512
b90e025616e44eb451d26c3bc2d1a895fa9dd96d2804d995dee4e060c07929f4bbc96d40f0a0aafbb4352efbc31c096dfd55f02d9e764341fda5917aaeecd039

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

Filesize
106KB

MD5
a7960ee34b77ecf61ea3a9aa25a1eac8

SHA1
e6ce0fca873a4526c50bc1f791b67f78ec58c5da

SHA256
bf1dae8a34c6a15d966fd73e2e5a1473a222c0904ec22519ebbc49372d981805

SHA512
b90e025616e44eb451d26c3bc2d1a895fa9dd96d2804d995dee4e060c07929f4bbc96d40f0a0aafbb4352efbc31c096dfd55f02d9e764341fda5917aaeecd039

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

Filesize
241KB

MD5
b60797225b0405c5cd61a93434b46fc0

SHA1
451ab2b8dfef9f67144934218b80c484f7c24a40

SHA256
f7fd373b949451a13f1ccccd493a9b4e44b97ca39cd3e7becb47e19af830a570

SHA512
30b9eb78ae48143722eb468409a2ede034866709c761d335722eee81c41908f1b266124448c0d410438bfcabb9adaabbcb2abed34bbef09cb5b3f6feb8d22141

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

Filesize
241KB

MD5
b60797225b0405c5cd61a93434b46fc0

SHA1
451ab2b8dfef9f67144934218b80c484f7c24a40

SHA256
f7fd373b949451a13f1ccccd493a9b4e44b97ca39cd3e7becb47e19af830a570

SHA512
30b9eb78ae48143722eb468409a2ede034866709c761d335722eee81c41908f1b266124448c0d410438bfcabb9adaabbcb2abed34bbef09cb5b3f6feb8d22141

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

Filesize
108KB

MD5
a21530bab16724220307de27ed138a48

SHA1
b5bfab60392a879058fb7e932f96f3aac66d0eea

SHA256
c3b4f65e8493a1480c1c7167bb740f8e25cf9bd62f82e64040c9045d9e2c6cab

SHA512
0bd18b325b364456eee0aef7628e87866bb059186399ab959f167f271863e0f4d315f91a5bb357286056af2aeda1a373eac16085ebc56214a06c0789b1f56175

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

Filesize
108KB

MD5
a21530bab16724220307de27ed138a48

SHA1
b5bfab60392a879058fb7e932f96f3aac66d0eea

SHA256
c3b4f65e8493a1480c1c7167bb740f8e25cf9bd62f82e64040c9045d9e2c6cab

SHA512
0bd18b325b364456eee0aef7628e87866bb059186399ab959f167f271863e0f4d315f91a5bb357286056af2aeda1a373eac16085ebc56214a06c0789b1f56175

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

Filesize
176KB

MD5
490d57c105e20fce6c6c8d48425a993b

SHA1
692e55c51119c1f10f9276026bcb9deb4c6be45c

SHA256
2e5487eee94a06289524abf78fb05421074f541f41f920ea4555d41f8eb7a3a3

SHA512
7f012487cd94cd4774ce31950fbc1b6912772d07f2210836396c4ce665ceecdb96a95996eed125d44e93addf6c38f3abc5c9d5e3d2fcba47d25326a1bf39fd60

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

Filesize
176KB

MD5
490d57c105e20fce6c6c8d48425a993b

SHA1
692e55c51119c1f10f9276026bcb9deb4c6be45c

SHA256
2e5487eee94a06289524abf78fb05421074f541f41f920ea4555d41f8eb7a3a3

SHA512
7f012487cd94cd4774ce31950fbc1b6912772d07f2210836396c4ce665ceecdb96a95996eed125d44e93addf6c38f3abc5c9d5e3d2fcba47d25326a1bf39fd60

Download Submit
memory/312-139-0x0000000000000000-mapping.dmp

Download
memory/1472-136-0x0000000000000000-mapping.dmp

Download
memory/2296-135-0x0000000000000000-mapping.dmp

Download
memory/2672-146-0x0000000000000000-mapping.dmp

Download
memory/2776-141-0x0000000000000000-mapping.dmp

Download
memory/4160-140-0x0000000000000000-mapping.dmp

Download