32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902

Analysis

max time kernel
204s
max time network
31s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 10:29

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General

Target

32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
Size

602KB
MD5

ae2b28c7b9b26938d5a85e9ed81803ce
SHA1

649c9c7acaa865d1764c25cdc23d53c41fe6923b
SHA256

32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902
SHA512

e0fc29d9423aaf15d8dc0e6a0fc1353e0f99fff694ab8834e142585352a82905157fc296321f7e03e90263ff26cf1b6fad930d3728fc2548d353437e1e78fbf9
SSDEEP

12288:CIny5DYTuLVGagPZaHkmlXcGUL31bctW23V2MZ4n0M:kUTuLVGaAI/MtlN23bZ40

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe

description ioc process

File created C:\Windows\system32\drivers\nethfdrv.sys 32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
Executes dropped EXE 3 IoCs

Processes:

installd.exenethtsrv.exenetupdsrv.exe

pid process

1928 installd.exe
1668 nethtsrv.exe
1624 netupdsrv.exe

description	ioc	process
File created	C:\Windows\system32\drivers\nethfdrv.sys	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe

pid	process
1928	installd.exe
1668	nethtsrv.exe
1624	netupdsrv.exe

Loads dropped DLL 9 IoCs

Processes:

32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exeinstalld.exenethtsrv.exe

pid	process
964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
1928	installd.exe
964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
1668	nethtsrv.exe
1668	nethtsrv.exe
964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.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:

32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe

description	ioc	process
File created	C:\Windows\SysWOW64\nethtsrv.exe	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
File created	C:\Windows\SysWOW64\netupdsrv.exe	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
File created	C:\Windows\SysWOW64\hfnapi.dll	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
File created	C:\Windows\SysWOW64\hfpapi.dll	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
File created	C:\Windows\SysWOW64\installd.exe	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe

Drops file in Program Files directory 3 IoCs

Processes:

32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\Config\data.xml	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.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

460

pid	process
460

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exenet.exenet.exe

description	pid	process	target process
PID 964 wrote to memory of 876	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	net.exe
PID 964 wrote to memory of 876	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	net.exe
PID 964 wrote to memory of 876	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	net.exe
PID 964 wrote to memory of 876	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	net.exe
PID 876 wrote to memory of 1256	876	net.exe	net1.exe
PID 876 wrote to memory of 1256	876	net.exe	net1.exe
PID 876 wrote to memory of 1256	876	net.exe	net1.exe
PID 876 wrote to memory of 1256	876	net.exe	net1.exe
PID 964 wrote to memory of 1828	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	net.exe
PID 964 wrote to memory of 1828	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	net.exe
PID 964 wrote to memory of 1828	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	net.exe
PID 964 wrote to memory of 1828	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	net.exe
PID 1828 wrote to memory of 1792	1828	net.exe	net1.exe
PID 1828 wrote to memory of 1792	1828	net.exe	net1.exe
PID 1828 wrote to memory of 1792	1828	net.exe	net1.exe
PID 1828 wrote to memory of 1792	1828	net.exe	net1.exe
PID 964 wrote to memory of 1928	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	installd.exe
PID 964 wrote to memory of 1928	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	installd.exe
PID 964 wrote to memory of 1928	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	installd.exe
PID 964 wrote to memory of 1928	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	installd.exe
PID 964 wrote to memory of 1928	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	installd.exe
PID 964 wrote to memory of 1928	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	installd.exe
PID 964 wrote to memory of 1928	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	installd.exe
PID 964 wrote to memory of 1668	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	nethtsrv.exe
PID 964 wrote to memory of 1668	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	nethtsrv.exe
PID 964 wrote to memory of 1668	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	nethtsrv.exe
PID 964 wrote to memory of 1668	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	nethtsrv.exe
PID 964 wrote to memory of 1624	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	netupdsrv.exe
PID 964 wrote to memory of 1624	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	netupdsrv.exe
PID 964 wrote to memory of 1624	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	netupdsrv.exe
PID 964 wrote to memory of 1624	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	netupdsrv.exe
PID 964 wrote to memory of 1624	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	netupdsrv.exe
PID 964 wrote to memory of 1624	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	netupdsrv.exe
PID 964 wrote to memory of 1624	964	32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe	netupdsrv.exe

C:\Users\Admin\AppData\Local\Temp\32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.exe
"C:\Users\Admin\AppData\Local\Temp\32b17cae0668b0531e2feed3136c89fa7f1d57c7aeca5fb47241c047b1e60902.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:964

C:\Windows\SysWOW64\net.exe
net stop nethttpservice
2⤵
- Suspicious use of WriteProcessMemory
PID:876

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop nethttpservice
3⤵
PID:1256

C:\Windows\SysWOW64\net.exe
net stop serviceupdater
2⤵
- Suspicious use of WriteProcessMemory
PID:1828

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop serviceupdater
3⤵
PID:1792

C:\Windows\SysWOW64\installd.exe
"C:\Windows\system32\installd.exe" nethfdrv
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1928

C:\Windows\SysWOW64\nethtsrv.exe
"C:\Windows\system32\nethtsrv.exe" -nfdi
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1668

C:\Windows\SysWOW64\netupdsrv.exe
"C:\Windows\system32\netupdsrv.exe" -nfdi
2⤵
- Executes dropped EXE
PID:1624

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
e41f010dcef2ec9bbbbddc1f4f4f84c5

SHA1
3c37d380f5224cf5e7758866052b7a6dc84ac281

SHA256
28499bc61f8cdde1074cabe113f4c9e33a52e97c675636fcadd6838797c597a6

SHA512
b8b49d6c9f4d77d3e9d11666ad37e1007f4f3c1cb22adc75b8a86f7f8d337a76390ba18e0e627c9cc693afa8ce7d0757f0a1a93888b06c277d6dc22410e14d0f

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

Filesize
241KB

MD5
fbae26e3fb6a75a0f5e0cac9dfa988ba

SHA1
24b154c001328a3aca3478d07898b7424cfef564

SHA256
87bca203c6d6558d2b3e2a497534afd50cd96434690e5c712da3d5e7cea65ce8

SHA512
489b413bef27e50888245945969b9b80e064ac01a8ec00afb8371227fa0fa14fb388ba063b258bf7157bfb0e41fc0790643fc5e9a6074e7b63293500778c283d

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

Filesize
108KB

MD5
6fea32ae899c36a6e3c0eaf9cbfbab62

SHA1
df7641f1ab4deec19fd78ff9d75850758086156c

SHA256
4990df24e73eaa39defe6af5341bee5e9480feaaaf920ae181a1ca30641d93a3

SHA512
9c2dd0cd30fb7b8fa617fed7cda7eeab6997b6d9443ea4e1149096627e0bd8215b2fea2f0ca8e157231dbd5cffccfb3ae44147dad658897aa45101e9c79f5ec3

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

Filesize
176KB

MD5
ecbd28b7b7c28e47ba98dcf40d39ccc3

SHA1
2a066e2f066113754f7ede5e1ab246d7e51545db

SHA256
c819f3ca3f27cd26134df476a46d9dd13c1cfc591db5bfce1a6ae7421ce62ad5

SHA512
0c3cacfd517d0229197b68f5e34474c1b2e76064d371ed573f57cfd38d3e6548ac9602bce092f45344fd205cecc81ec9c5a87477f6e1c70d67a70e9db73424f3

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

Filesize
158KB

MD5
d25e3bdf33a8a61a2afd45984f0ea679

SHA1
aa956e571df6321abffafb4ee55d83a002f626a3

SHA256
b36c6117b356ae5f59a0def7ba38e32f3baa3113a4450160a82892d063c1bb8d

SHA512
30872cccb0a6c0a4adbb6d57754b2ef8822c519a8107fa81275a680d3d889c67db4a76e588a159f6947b7f411b0b3565cdb5edae3007fd7b9446143f11d6e0ce

Download Submit
\Users\Admin\AppData\Local\Temp\nsu8A0A.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
\Users\Admin\AppData\Local\Temp\nsu8A0A.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
\Users\Admin\AppData\Local\Temp\nsu8A0A.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
e41f010dcef2ec9bbbbddc1f4f4f84c5

SHA1
3c37d380f5224cf5e7758866052b7a6dc84ac281

SHA256
28499bc61f8cdde1074cabe113f4c9e33a52e97c675636fcadd6838797c597a6

SHA512
b8b49d6c9f4d77d3e9d11666ad37e1007f4f3c1cb22adc75b8a86f7f8d337a76390ba18e0e627c9cc693afa8ce7d0757f0a1a93888b06c277d6dc22410e14d0f

Download Submit
\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
e41f010dcef2ec9bbbbddc1f4f4f84c5

SHA1
3c37d380f5224cf5e7758866052b7a6dc84ac281

SHA256
28499bc61f8cdde1074cabe113f4c9e33a52e97c675636fcadd6838797c597a6

SHA512
b8b49d6c9f4d77d3e9d11666ad37e1007f4f3c1cb22adc75b8a86f7f8d337a76390ba18e0e627c9cc693afa8ce7d0757f0a1a93888b06c277d6dc22410e14d0f

Download Submit
\Windows\SysWOW64\hfpapi.dll

Filesize
241KB

MD5
fbae26e3fb6a75a0f5e0cac9dfa988ba

SHA1
24b154c001328a3aca3478d07898b7424cfef564

SHA256
87bca203c6d6558d2b3e2a497534afd50cd96434690e5c712da3d5e7cea65ce8

SHA512
489b413bef27e50888245945969b9b80e064ac01a8ec00afb8371227fa0fa14fb388ba063b258bf7157bfb0e41fc0790643fc5e9a6074e7b63293500778c283d

Download Submit
\Windows\SysWOW64\installd.exe

Filesize
108KB

MD5
6fea32ae899c36a6e3c0eaf9cbfbab62

SHA1
df7641f1ab4deec19fd78ff9d75850758086156c

SHA256
4990df24e73eaa39defe6af5341bee5e9480feaaaf920ae181a1ca30641d93a3

SHA512
9c2dd0cd30fb7b8fa617fed7cda7eeab6997b6d9443ea4e1149096627e0bd8215b2fea2f0ca8e157231dbd5cffccfb3ae44147dad658897aa45101e9c79f5ec3

Download Submit
\Windows\SysWOW64\nethtsrv.exe

Filesize
176KB

MD5
ecbd28b7b7c28e47ba98dcf40d39ccc3

SHA1
2a066e2f066113754f7ede5e1ab246d7e51545db

SHA256
c819f3ca3f27cd26134df476a46d9dd13c1cfc591db5bfce1a6ae7421ce62ad5

SHA512
0c3cacfd517d0229197b68f5e34474c1b2e76064d371ed573f57cfd38d3e6548ac9602bce092f45344fd205cecc81ec9c5a87477f6e1c70d67a70e9db73424f3

Download Submit
\Windows\SysWOW64\netupdsrv.exe

Filesize
158KB

MD5
d25e3bdf33a8a61a2afd45984f0ea679

SHA1
aa956e571df6321abffafb4ee55d83a002f626a3

SHA256
b36c6117b356ae5f59a0def7ba38e32f3baa3113a4450160a82892d063c1bb8d

SHA512
30872cccb0a6c0a4adbb6d57754b2ef8822c519a8107fa81275a680d3d889c67db4a76e588a159f6947b7f411b0b3565cdb5edae3007fd7b9446143f11d6e0ce

Download Submit
memory/876-58-0x0000000000000000-mapping.dmp

Download
memory/964-54-0x0000000076771000-0x0000000076773000-memory.dmp

Filesize
8KB

Download
memory/964-69-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/964-55-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/1256-59-0x0000000000000000-mapping.dmp

Download
memory/1624-77-0x0000000000000000-mapping.dmp

Download
memory/1668-71-0x0000000000000000-mapping.dmp

Download
memory/1792-62-0x0000000000000000-mapping.dmp

Download
memory/1828-61-0x0000000000000000-mapping.dmp

Download
memory/1928-64-0x0000000000000000-mapping.dmp

Download