1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38

Analysis

max time kernel
255s
max time network
263s
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 10:32

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General

Target

1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
Size

603KB
MD5

c1b80fad310587d3fc84d8c78689a20d
SHA1

b2cbd099c4bf1d52d5076ba876273fa09818858a
SHA256

1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38
SHA512

2b4d223b0db444f5c2045a69306a33a9d78619809c31b505d23186ef4719c5163cdecb267215c56a8a1a8d358f05b019196fcdacac76bca218d740100ad11d03
SSDEEP

12288:OIny5DYTfIXKXG63IRbsLKjl6IIahLgbTADtiGS1aTEPITF:QUTfstLhfabSkfPo

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe

description ioc process

File created C:\Windows\system32\drivers\nethfdrv.sys 1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
Executes dropped EXE 2 IoCs

Processes:

installd.exenethtsrv.exe

pid process

3424 installd.exe
2564 nethtsrv.exe

description	ioc	process
File created	C:\Windows\system32\drivers\nethfdrv.sys	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe

pid	process
3424	installd.exe
2564	nethtsrv.exe

Loads dropped DLL 8 IoCs

Processes:

1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exeinstalld.exenethtsrv.exe

pid	process
3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
3424	installd.exe
2564	nethtsrv.exe
2564	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:

1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe

description	ioc	process
File created	C:\Windows\SysWOW64\installd.exe	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
File created	C:\Windows\SysWOW64\nethtsrv.exe	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
File created	C:\Windows\SysWOW64\netupdsrv.exe	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
File created	C:\Windows\SysWOW64\hfnapi.dll	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
File created	C:\Windows\SysWOW64\hfpapi.dll	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe

Drops file in Program Files directory 3 IoCs

Processes:

1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\Config\data.xml	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.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:

1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exenet.exenet.exe

description	pid	process	target process
PID 3892 wrote to memory of 1800	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	net.exe
PID 3892 wrote to memory of 1800	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	net.exe
PID 3892 wrote to memory of 1800	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	net.exe
PID 1800 wrote to memory of 3056	1800	net.exe	net1.exe
PID 1800 wrote to memory of 3056	1800	net.exe	net1.exe
PID 1800 wrote to memory of 3056	1800	net.exe	net1.exe
PID 3892 wrote to memory of 2540	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	net.exe
PID 3892 wrote to memory of 2540	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	net.exe
PID 3892 wrote to memory of 2540	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	net.exe
PID 2540 wrote to memory of 2416	2540	net.exe	net1.exe
PID 2540 wrote to memory of 2416	2540	net.exe	net1.exe
PID 2540 wrote to memory of 2416	2540	net.exe	net1.exe
PID 3892 wrote to memory of 3424	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	installd.exe
PID 3892 wrote to memory of 3424	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	installd.exe
PID 3892 wrote to memory of 3424	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	installd.exe
PID 3892 wrote to memory of 2564	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	nethtsrv.exe
PID 3892 wrote to memory of 2564	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	nethtsrv.exe
PID 3892 wrote to memory of 2564	3892	1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe	nethtsrv.exe

C:\Users\Admin\AppData\Local\Temp\1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.exe
"C:\Users\Admin\AppData\Local\Temp\1db65fd9d258c6f864369ac4329a3c75958e2f24091c6b33a1574f3f2638ff38.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:3892

C:\Windows\SysWOW64\net.exe
net stop nethttpservice
2⤵
- Suspicious use of WriteProcessMemory
PID:1800

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop nethttpservice
3⤵
PID:3056

C:\Windows\SysWOW64\net.exe
net stop serviceupdater
2⤵
- Suspicious use of WriteProcessMemory
PID:2540

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop serviceupdater
3⤵
PID:2416

C:\Windows\SysWOW64\installd.exe
"C:\Windows\system32\installd.exe" nethfdrv
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:3424

C:\Windows\SysWOW64\nethtsrv.exe
"C:\Windows\system32\nethtsrv.exe" -nfdi
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:2564

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsg79A2.tmp\System.dll
Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsg79A2.tmp\nsExec.dll
Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsg79A2.tmp\nsExec.dll
Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsg79A2.tmp\nsExec.dll
Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsg79A2.tmp\nsExec.dll
Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Windows\SysWOW64\hfnapi.dll
Filesize
106KB

MD5
5eedef550e7d49d8736e7816eeb55a8d

SHA1
175e18161c4b29b53d3ee0f0e45941fec1799b6f

SHA256
a7a75ff5a81778359ec06957300cd510f4a2eb3915c001f39434251b870936f6

SHA512
69bf0d4e9b971d1afbe31a276cfb29e7474d1a44b635c1ac9196bc17f27a046d99ece58f263eaddcba1f096af40ba117602381f7eff07274b33f95be7b2c0283

Download Submit
C:\Windows\SysWOW64\hfnapi.dll
Filesize
106KB

MD5
5eedef550e7d49d8736e7816eeb55a8d

SHA1
175e18161c4b29b53d3ee0f0e45941fec1799b6f

SHA256
a7a75ff5a81778359ec06957300cd510f4a2eb3915c001f39434251b870936f6

SHA512
69bf0d4e9b971d1afbe31a276cfb29e7474d1a44b635c1ac9196bc17f27a046d99ece58f263eaddcba1f096af40ba117602381f7eff07274b33f95be7b2c0283

Download Submit
C:\Windows\SysWOW64\hfnapi.dll
Filesize
106KB

MD5
5eedef550e7d49d8736e7816eeb55a8d

SHA1
175e18161c4b29b53d3ee0f0e45941fec1799b6f

SHA256
a7a75ff5a81778359ec06957300cd510f4a2eb3915c001f39434251b870936f6

SHA512
69bf0d4e9b971d1afbe31a276cfb29e7474d1a44b635c1ac9196bc17f27a046d99ece58f263eaddcba1f096af40ba117602381f7eff07274b33f95be7b2c0283

Download Submit
C:\Windows\SysWOW64\hfpapi.dll
Filesize
244KB

MD5
2ea6c5e1e0c0db85d8a5465add40bb9c

SHA1
954fce6ae70a9985e5d92231fd7b9cadde577aee

SHA256
cc3f4ec127136d081048a68ee2d46a4785ace71438265c5c5ae2867636644f39

SHA512
f12394c4de72b1f42fe3216b5d86bae42483b5609644fe551db606d339eca75b4d51e6997a1040f09ea98a3b0f4a9a7374c65e6d4028b61c6dff6d46e8fef863

Download Submit
C:\Windows\SysWOW64\hfpapi.dll
Filesize
244KB

MD5
2ea6c5e1e0c0db85d8a5465add40bb9c

SHA1
954fce6ae70a9985e5d92231fd7b9cadde577aee

SHA256
cc3f4ec127136d081048a68ee2d46a4785ace71438265c5c5ae2867636644f39

SHA512
f12394c4de72b1f42fe3216b5d86bae42483b5609644fe551db606d339eca75b4d51e6997a1040f09ea98a3b0f4a9a7374c65e6d4028b61c6dff6d46e8fef863

Download Submit
C:\Windows\SysWOW64\installd.exe
Filesize
108KB

MD5
28245e92b1faac3d9797022a941ff53a

SHA1
f6752148f6ae8d94a923f17a6f618ac13dbdad83

SHA256
febceb32985f33471b14395359e47a5e2295cec103e571cff5f2a33a6afa9408

SHA512
44a1330eeed21a59c6f29232f4dff791c9a92f23820ac0bd0c15774f051ca287f87ceece38e79066d2c193b156170b547305a124a97d1a7b0521b6c9f099de97

Download Submit
C:\Windows\SysWOW64\installd.exe
Filesize
108KB

MD5
28245e92b1faac3d9797022a941ff53a

SHA1
f6752148f6ae8d94a923f17a6f618ac13dbdad83

SHA256
febceb32985f33471b14395359e47a5e2295cec103e571cff5f2a33a6afa9408

SHA512
44a1330eeed21a59c6f29232f4dff791c9a92f23820ac0bd0c15774f051ca287f87ceece38e79066d2c193b156170b547305a124a97d1a7b0521b6c9f099de97

Download Submit
C:\Windows\SysWOW64\nethtsrv.exe
Filesize
176KB

MD5
656fbe2e661312325e1a1491913b900e

SHA1
6063c92b8b1718fc48732a5143ace020f6fcac9a

SHA256
5323083c49f129578f49478cc5450ce4c0db40290e5cd5a59839e8744a33073b

SHA512
e0af20c1912948e2facd8be15d04bac57299efa68ba5a672eb25d36cd9318c2f7a91c895b6aa66eebc80e75c7a41185583dd59f41b938d4bd170fa9e546b3868

Download Submit
C:\Windows\SysWOW64\nethtsrv.exe
Filesize
176KB

MD5
656fbe2e661312325e1a1491913b900e

SHA1
6063c92b8b1718fc48732a5143ace020f6fcac9a

SHA256
5323083c49f129578f49478cc5450ce4c0db40290e5cd5a59839e8744a33073b

SHA512
e0af20c1912948e2facd8be15d04bac57299efa68ba5a672eb25d36cd9318c2f7a91c895b6aa66eebc80e75c7a41185583dd59f41b938d4bd170fa9e546b3868

Download Submit
memory/1800-136-0x0000000000000000-mapping.dmp

Download
memory/2416-141-0x0000000000000000-mapping.dmp

Download
memory/2540-140-0x0000000000000000-mapping.dmp

Download
memory/2564-148-0x0000000000000000-mapping.dmp

Download
memory/3056-137-0x0000000000000000-mapping.dmp

Download
memory/3424-143-0x0000000000000000-mapping.dmp

Download
memory/3892-142-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/3892-132-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download