e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa

Analysis

max time kernel
280s
max time network
301s
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 10:09

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General

Target

e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
Size

602KB
MD5

9bfb067d7ba38ba0d364b4a2923e002b
SHA1

fb0434c494c4ae909c29642ce581563abe9acda1
SHA256

e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa
SHA512

c75fe62ee1b894e6259908c90aee92d1f7b56d2cc9d14dd2e6466ee2271cf3ea2ee98538f2f6f3bf7df8aedd92bb2302368dfcf30d93ef44819ba417367d0abe
SSDEEP

12288:oIny5DYTjyR0LHbbFeSOYAXRnlqLx/N6q68tKCJTi13lKr1:mUTj6UvtjA2ljLQi1

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe

description ioc process

File created C:\Windows\system32\drivers\nethfdrv.sys e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
Executes dropped EXE 2 IoCs

Processes:

installd.exenethtsrv.exe

pid process

4120 installd.exe
1140 nethtsrv.exe

description	ioc	process
File created	C:\Windows\system32\drivers\nethfdrv.sys	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe

pid	process
4120	installd.exe
1140	nethtsrv.exe

Loads dropped DLL 6 IoCs

Processes:

e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exeinstalld.exe

pid	process
5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
4120	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:

e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe

description	ioc	process
File created	C:\Windows\SysWOW64\nethtsrv.exe	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
File created	C:\Windows\SysWOW64\netupdsrv.exe	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
File created	C:\Windows\SysWOW64\hfnapi.dll	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
File created	C:\Windows\SysWOW64\hfpapi.dll	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
File created	C:\Windows\SysWOW64\installd.exe	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe

Drops file in Program Files directory 3 IoCs

Processes:

e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
File created	C:\Program Files (x86)\Common Files\Config\data.xml	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.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

664

pid	process
664

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exenet.exenet.exe

description	pid	process	target process
PID 5100 wrote to memory of 2724	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	net.exe
PID 5100 wrote to memory of 2724	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	net.exe
PID 5100 wrote to memory of 2724	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	net.exe
PID 2724 wrote to memory of 3248	2724	net.exe	net1.exe
PID 2724 wrote to memory of 3248	2724	net.exe	net1.exe
PID 2724 wrote to memory of 3248	2724	net.exe	net1.exe
PID 5100 wrote to memory of 3400	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	net.exe
PID 5100 wrote to memory of 3400	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	net.exe
PID 5100 wrote to memory of 3400	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	net.exe
PID 3400 wrote to memory of 2544	3400	net.exe	net1.exe
PID 3400 wrote to memory of 2544	3400	net.exe	net1.exe
PID 3400 wrote to memory of 2544	3400	net.exe	net1.exe
PID 5100 wrote to memory of 4120	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	installd.exe
PID 5100 wrote to memory of 4120	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	installd.exe
PID 5100 wrote to memory of 4120	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	installd.exe
PID 5100 wrote to memory of 1140	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	nethtsrv.exe
PID 5100 wrote to memory of 1140	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	nethtsrv.exe
PID 5100 wrote to memory of 1140	5100	e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe	nethtsrv.exe

C:\Users\Admin\AppData\Local\Temp\e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.exe
"C:\Users\Admin\AppData\Local\Temp\e7724d0fca0b3243c8bbb283b0e3422016293779333933354714c0f83de6f7fa.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:5100

C:\Windows\SysWOW64\net.exe
net stop nethttpservice
2⤵
- Suspicious use of WriteProcessMemory
PID:2724

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop nethttpservice
3⤵
PID:3248

C:\Windows\SysWOW64\net.exe
net stop serviceupdater
2⤵
- Suspicious use of WriteProcessMemory
PID:3400

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop serviceupdater
3⤵
PID:2544

C:\Windows\SysWOW64\installd.exe
"C:\Windows\system32\installd.exe" nethfdrv
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:4120

C:\Windows\SysWOW64\nethtsrv.exe
"C:\Windows\system32\nethtsrv.exe" -nfdi
2⤵
- Executes dropped EXE
PID:1140

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\nshFB55.tmp\System.dll
Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nshFB55.tmp\nsExec.dll
Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nshFB55.tmp\nsExec.dll
Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nshFB55.tmp\nsExec.dll
Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nshFB55.tmp\nsExec.dll
Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

MD5
e8630de3b04ab24e229160dca322a429

SHA1
cb5928b39e2b2b78e783f0f112abcf1ec5b7b915

SHA256
1fe0e53d7571c58608a77cd7b82178487f7063c27ccdc1ace66e03fee296b410

SHA512
0399c391187cb9e96cf7c6038c269dac93193c55013cfc93b1c1ea4219522d2b16ca58af09d70419770f8685ec86986f007db276a86a27f86b384e77936cd196

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

MD5
e8630de3b04ab24e229160dca322a429

SHA1
cb5928b39e2b2b78e783f0f112abcf1ec5b7b915

SHA256
1fe0e53d7571c58608a77cd7b82178487f7063c27ccdc1ace66e03fee296b410

SHA512
0399c391187cb9e96cf7c6038c269dac93193c55013cfc93b1c1ea4219522d2b16ca58af09d70419770f8685ec86986f007db276a86a27f86b384e77936cd196

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

MD5
7cd4734f8a0608b501d0c9ecd0c7475b

SHA1
5e3b90f738196c8cb4f973d5a2b8de2a6e012ccf

SHA256
de443649c0c542d2c34b1a0447524ca4cbf3dfda118371b98bc6388af0530477

SHA512
6a1b1312a8172220bfffeee1e38888ee2f96b2b4b4543b8d15bde4599dcb8c38edcb208298f000e134286b02b09b72728a38d87012181c76b38668fcc72038f6

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

MD5
7cd4734f8a0608b501d0c9ecd0c7475b

SHA1
5e3b90f738196c8cb4f973d5a2b8de2a6e012ccf

SHA256
de443649c0c542d2c34b1a0447524ca4cbf3dfda118371b98bc6388af0530477

SHA512
6a1b1312a8172220bfffeee1e38888ee2f96b2b4b4543b8d15bde4599dcb8c38edcb208298f000e134286b02b09b72728a38d87012181c76b38668fcc72038f6

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

MD5
e4a703daeeccedf12c147bc3b616aaa0

SHA1
8bb3a0f9b66b155a06fdb2891672dbbe943f55a7

SHA256
6ad461320356ba8c7741ff7f7ec17e260260d8ddc4af2d35bd7e08ab1abc3da3

SHA512
d35767545f737b0052f6709e58cd27cfc0daef76fda5c0a82a0297955ac6613baed9fc256b102a1f94859c8710d35193f1b864e374de44091fb0e0a8a036460e

Download Submit
memory/1140-148-0x0000000000000000-mapping.dmp

Download
memory/2544-142-0x0000000000000000-mapping.dmp

Download
memory/2724-137-0x0000000000000000-mapping.dmp

Download
memory/3248-138-0x0000000000000000-mapping.dmp

Download
memory/3400-141-0x0000000000000000-mapping.dmp

Download
memory/4120-143-0x0000000000000000-mapping.dmp

Download
memory/5100-136-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/5100-133-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download