cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692

Analysis

max time kernel
389s
max time network
462s
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 10:12

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General

Target

cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
Size

602KB
MD5

6b25dc18a90efe787c5887d1fdfda41a
SHA1

9d32749100429e9344452234b12f1078bb9f89b7
SHA256

cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692
SHA512

87b5b0d7d43d0b49463ab6f03543c029ebd57adec1a3966c8c203b827d1620423f9d2533e0f500b2d93bec84117b2a787d397983d4103d7efecfdd462670b6e2
SSDEEP

12288:LIny5DYTjq4VMmu0UUzwFIxrOH77cjsacrsDWLgkIGw55IsXC:zUTjqwMD0UnFIxrOMjTcrsyskIh5DXC

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe

description ioc process

File created C:\Windows\system32\drivers\nethfdrv.sys cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
Executes dropped EXE 1 IoCs

Processes:

installd.exe

pid process

3920 installd.exe

description	ioc	process
File created	C:\Windows\system32\drivers\nethfdrv.sys	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe

pid	process
3920	installd.exe

Loads dropped DLL 6 IoCs

Processes:

cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exeinstalld.exe

pid	process
4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
3920	installd.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:

cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe

description	ioc	process
File created	C:\Windows\SysWOW64\netupdsrv.exe	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
File created	C:\Windows\SysWOW64\hfnapi.dll	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
File created	C:\Windows\SysWOW64\hfpapi.dll	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
File created	C:\Windows\SysWOW64\installd.exe	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
File created	C:\Windows\SysWOW64\nethtsrv.exe	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe

Drops file in Program Files directory 3 IoCs

Processes:

cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\Config\data.xml	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.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 use of WriteProcessMemory 15 IoCs

Processes:

cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exenet.exenet.exe

description	pid	process	target process
PID 4740 wrote to memory of 2588	4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe	net.exe
PID 4740 wrote to memory of 2588	4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe	net.exe
PID 4740 wrote to memory of 2588	4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe	net.exe
PID 2588 wrote to memory of 4632	2588	net.exe	net1.exe
PID 2588 wrote to memory of 4632	2588	net.exe	net1.exe
PID 2588 wrote to memory of 4632	2588	net.exe	net1.exe
PID 4740 wrote to memory of 632	4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe	net.exe
PID 4740 wrote to memory of 632	4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe	net.exe
PID 4740 wrote to memory of 632	4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe	net.exe
PID 632 wrote to memory of 3284	632	net.exe	net1.exe
PID 632 wrote to memory of 3284	632	net.exe	net1.exe
PID 632 wrote to memory of 3284	632	net.exe	net1.exe
PID 4740 wrote to memory of 3920	4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe	installd.exe
PID 4740 wrote to memory of 3920	4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe	installd.exe
PID 4740 wrote to memory of 3920	4740	cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe	installd.exe

C:\Users\Admin\AppData\Local\Temp\cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.exe
"C:\Users\Admin\AppData\Local\Temp\cd28ced1e65d40eedc4a07b0b4dc5f565d8927cceeab654f9f577c9748e3b692.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:4740

C:\Windows\SysWOW64\net.exe
net stop nethttpservice
2⤵
- Suspicious use of WriteProcessMemory
PID:2588

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop nethttpservice
3⤵
PID:4632

C:\Windows\SysWOW64\net.exe
net stop serviceupdater
2⤵
- Suspicious use of WriteProcessMemory
PID:632

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop serviceupdater
3⤵
PID:3284

C:\Windows\SysWOW64\installd.exe
"C:\Windows\system32\installd.exe" nethfdrv
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:3920

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\nsh744F.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsh744F.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsh744F.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsh744F.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsh744F.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

Filesize
106KB

MD5
bf7a7f060a7e79e6d3957eef211a842e

SHA1
1463c736968638bf41150d3afc09df30e6949c62

SHA256
55ffd91c5bb77bfe843377e3e4220b2c83d7573cbe60559589e801d911ca11d9

SHA512
5d3333cb7af0e5dd06ed6bf9fa5287c97fef1e6f3af5058cc24c473fe0f530eeeae45a1e66295ea74d8c617c25450ce024a45897d2bda5bf6c994c8e259acaf5

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

Filesize
106KB

MD5
bf7a7f060a7e79e6d3957eef211a842e

SHA1
1463c736968638bf41150d3afc09df30e6949c62

SHA256
55ffd91c5bb77bfe843377e3e4220b2c83d7573cbe60559589e801d911ca11d9

SHA512
5d3333cb7af0e5dd06ed6bf9fa5287c97fef1e6f3af5058cc24c473fe0f530eeeae45a1e66295ea74d8c617c25450ce024a45897d2bda5bf6c994c8e259acaf5

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

Filesize
108KB

MD5
3f299a1a5ff3cb78451a45dfb0e02198

SHA1
63953761ad627a8800e6a2ddd53cd231e4702f1a

SHA256
6823656365e01e89023ac5dd5ff8b16b101c26b6db3efdbd877aa256073bbe43

SHA512
3c348bd68749a89ebfda3122081cc9eab83175f3b6c2d0a6b6aa74fc5167202b6f4ce34b15e7003929d7114395a89368640df7dcd908dd304d2f0e829ae6a144

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

Filesize
108KB

MD5
3f299a1a5ff3cb78451a45dfb0e02198

SHA1
63953761ad627a8800e6a2ddd53cd231e4702f1a

SHA256
6823656365e01e89023ac5dd5ff8b16b101c26b6db3efdbd877aa256073bbe43

SHA512
3c348bd68749a89ebfda3122081cc9eab83175f3b6c2d0a6b6aa74fc5167202b6f4ce34b15e7003929d7114395a89368640df7dcd908dd304d2f0e829ae6a144

Download Submit
memory/632-140-0x0000000000000000-mapping.dmp

Download
memory/2588-135-0x0000000000000000-mapping.dmp

Download
memory/3284-141-0x0000000000000000-mapping.dmp

Download
memory/3920-143-0x0000000000000000-mapping.dmp

Download
memory/4632-136-0x0000000000000000-mapping.dmp

Download
memory/4740-142-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/4740-137-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download