04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c

Analysis

max time kernel
242s
max time network
334s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 11:00

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General

Target

04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
Size

446KB
MD5

36b185a49a6970fb14fd3b37c43c6c33
SHA1

d046d0534fc6439b343131b52e6b5958e23013f7
SHA256

04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c
SHA512

a29d9233a453063fd3a677a0f8d7956a4d1d5be1ba8c4a18d2798f895131cd80c769882de987ead349b1f9951e0b482b76f216ac33e29104ca56e09543326f72
SSDEEP

12288:XDaXvQjZGARYqlKRYYDKbweH6KK5f4Sqw73/n:XDqvQjZGOYql5Y2UeH96HHDn

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe

description ioc process

File created C:\Windows\system32\drivers\nethfdrv.sys 04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
Executes dropped EXE 3 IoCs

Processes:

installd.exenethtsrv.exenetupdsrv.exe

pid process

1956 installd.exe
964 nethtsrv.exe
328 netupdsrv.exe

description	ioc	process
File created	C:\Windows\system32\drivers\nethfdrv.sys	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe

pid	process
1956	installd.exe
964	nethtsrv.exe
328	netupdsrv.exe

Loads dropped DLL 9 IoCs

Processes:

04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exeinstalld.exenethtsrv.exe

pid	process
1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
1956	installd.exe
1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
964	nethtsrv.exe
964	nethtsrv.exe
1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.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:

04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe

description	ioc	process
File created	C:\Windows\SysWOW64\hfnapi.dll	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
File created	C:\Windows\SysWOW64\hfpapi.dll	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
File created	C:\Windows\SysWOW64\installd.exe	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
File created	C:\Windows\SysWOW64\nethtsrv.exe	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
File created	C:\Windows\SysWOW64\netupdsrv.exe	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe

Drops file in Program Files directory 3 IoCs

Processes:

04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
File created	C:\Program Files (x86)\Common Files\Config\data.xml	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.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

464

pid	process
464

Suspicious use of WriteProcessMemory 34 IoCs

Processes:

04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exenet.exenet.exe

description	pid	process	target process
PID 1868 wrote to memory of 1692	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	net.exe
PID 1868 wrote to memory of 1692	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	net.exe
PID 1868 wrote to memory of 1692	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	net.exe
PID 1868 wrote to memory of 1692	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	net.exe
PID 1692 wrote to memory of 1104	1692	net.exe	net1.exe
PID 1692 wrote to memory of 1104	1692	net.exe	net1.exe
PID 1692 wrote to memory of 1104	1692	net.exe	net1.exe
PID 1692 wrote to memory of 1104	1692	net.exe	net1.exe
PID 1868 wrote to memory of 296	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	net.exe
PID 1868 wrote to memory of 296	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	net.exe
PID 1868 wrote to memory of 296	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	net.exe
PID 1868 wrote to memory of 296	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	net.exe
PID 296 wrote to memory of 108	296	net.exe	net1.exe
PID 296 wrote to memory of 108	296	net.exe	net1.exe
PID 296 wrote to memory of 108	296	net.exe	net1.exe
PID 296 wrote to memory of 108	296	net.exe	net1.exe
PID 1868 wrote to memory of 1956	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	installd.exe
PID 1868 wrote to memory of 1956	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	installd.exe
PID 1868 wrote to memory of 1956	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	installd.exe
PID 1868 wrote to memory of 1956	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	installd.exe
PID 1868 wrote to memory of 1956	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	installd.exe
PID 1868 wrote to memory of 1956	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	installd.exe
PID 1868 wrote to memory of 1956	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	installd.exe
PID 1868 wrote to memory of 964	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	nethtsrv.exe
PID 1868 wrote to memory of 964	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	nethtsrv.exe
PID 1868 wrote to memory of 964	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	nethtsrv.exe
PID 1868 wrote to memory of 964	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	nethtsrv.exe
PID 1868 wrote to memory of 328	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	netupdsrv.exe
PID 1868 wrote to memory of 328	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	netupdsrv.exe
PID 1868 wrote to memory of 328	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	netupdsrv.exe
PID 1868 wrote to memory of 328	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	netupdsrv.exe
PID 1868 wrote to memory of 328	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	netupdsrv.exe
PID 1868 wrote to memory of 328	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	netupdsrv.exe
PID 1868 wrote to memory of 328	1868	04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe	netupdsrv.exe

C:\Users\Admin\AppData\Local\Temp\04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.exe
"C:\Users\Admin\AppData\Local\Temp\04da8c40b022f38e1615d7b55fd84d952bd31b038668abcb54b75990fedde87c.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:1868

C:\Windows\SysWOW64\net.exe
net stop nethttpservice
2⤵
- Suspicious use of WriteProcessMemory
PID:1692

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop nethttpservice
3⤵
PID:1104

C:\Windows\SysWOW64\net.exe
net stop serviceupdater
2⤵
- Suspicious use of WriteProcessMemory
PID:296

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop serviceupdater
3⤵
PID:108

C:\Windows\SysWOW64\installd.exe
"C:\Windows\system32\installd.exe" nethfdrv
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1956

C:\Windows\SysWOW64\nethtsrv.exe
"C:\Windows\system32\nethtsrv.exe" -nfdi
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:964

C:\Windows\SysWOW64\netupdsrv.exe
"C:\Windows\system32\netupdsrv.exe" -nfdi
2⤵
- Executes dropped EXE
PID:328

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:\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
7c7ffefa2ccf92e02b3f28035553ec47

SHA1
3657f843d8bd805d795ae501a6beae8b8ae06778

SHA256
d778631e33c78f1dc6ff874ef0055721a3be44d0f4897dc8b1e716e4a597b914

SHA512
54a55e2c9d90d09fd112c0e5ac8e9d49b0e388f31a61a35d6179dc4e2f580e00fac73484db84ea9824d2ed9d6fda4c0a05fdb03a6a0b4d9ec56fb9defb3d0441

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

Filesize
241KB

MD5
9f31e279738d23ec735e08c8ef26f40f

SHA1
363fbb3fd3fd3054a92fbd96e297990881d564cc

SHA256
fcf316c4f14e8e5a031552a60c4f3c16a4d6577c2d554de94a64d898a74e4238

SHA512
6f70f29a93e97ab6df92a0eaa72abb940758b2b2ee64b80a53d829ee33aaa176a688d513fd55969131ac16d1d7f098413d9859ae0a5c22485eb2dab540f1cca8

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

Filesize
108KB

MD5
da35b0fbeb13d8ca216dbe3d69ce6377

SHA1
213cde671ea58e5a181da787c8ccba5c58b602f6

SHA256
f093021713bf80238588ca5c27296d7b1e57abe0ac5cb27c3c3e60ae623a8962

SHA512
67ecd49cd748aa8869f5db1e5c9040e0f2eaeb77b47abdf9d79f2fdad72d335710706ed3b4513e3a54e6fe8a1fa0c92c940ecb034da3d295d133569a30199383

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

Filesize
176KB

MD5
4179d7e810547d4c9bf759087b3e39bc

SHA1
faf509094b28fd4bfea813d30c4a805394479153

SHA256
31066c57e73ab18e2581690b2a23eea5c9ac843cc45657237fdc78d7ee67662d

SHA512
5c952c1909ec272380d2b3c3dfb4da705c05de0dd847870067aab3a02c8eb49fbaffc044c42b970b11aef08144fd47fef7cde914fda2297a9c9241129fba20d8

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

Filesize
158KB

MD5
cf4b4da97b945e81cd3e4894a05aa880

SHA1
69cec0570ab9054adc9bb2289b7b0f5617de79dc

SHA256
767699cf1364d69caa08e04bbfe276949661aa520d5a2bf25a739a3942d09762

SHA512
b0fc5c88f9c74b51ba98bb158e8716186f5e9ea5ee77338618ee34a5df4ba289838a664902be1ad54fdc3f273671cabb9b754e5ca3e3d6328cd8f70045aff13d

Download Submit
\Users\Admin\AppData\Local\Temp\nsfA8F.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
\Users\Admin\AppData\Local\Temp\nsfA8F.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
\Users\Admin\AppData\Local\Temp\nsfA8F.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
7c7ffefa2ccf92e02b3f28035553ec47

SHA1
3657f843d8bd805d795ae501a6beae8b8ae06778

SHA256
d778631e33c78f1dc6ff874ef0055721a3be44d0f4897dc8b1e716e4a597b914

SHA512
54a55e2c9d90d09fd112c0e5ac8e9d49b0e388f31a61a35d6179dc4e2f580e00fac73484db84ea9824d2ed9d6fda4c0a05fdb03a6a0b4d9ec56fb9defb3d0441

Download Submit
\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
7c7ffefa2ccf92e02b3f28035553ec47

SHA1
3657f843d8bd805d795ae501a6beae8b8ae06778

SHA256
d778631e33c78f1dc6ff874ef0055721a3be44d0f4897dc8b1e716e4a597b914

SHA512
54a55e2c9d90d09fd112c0e5ac8e9d49b0e388f31a61a35d6179dc4e2f580e00fac73484db84ea9824d2ed9d6fda4c0a05fdb03a6a0b4d9ec56fb9defb3d0441

Download Submit
\Windows\SysWOW64\hfpapi.dll

Filesize
241KB

MD5
9f31e279738d23ec735e08c8ef26f40f

SHA1
363fbb3fd3fd3054a92fbd96e297990881d564cc

SHA256
fcf316c4f14e8e5a031552a60c4f3c16a4d6577c2d554de94a64d898a74e4238

SHA512
6f70f29a93e97ab6df92a0eaa72abb940758b2b2ee64b80a53d829ee33aaa176a688d513fd55969131ac16d1d7f098413d9859ae0a5c22485eb2dab540f1cca8

Download Submit
\Windows\SysWOW64\installd.exe

Filesize
108KB

MD5
da35b0fbeb13d8ca216dbe3d69ce6377

SHA1
213cde671ea58e5a181da787c8ccba5c58b602f6

SHA256
f093021713bf80238588ca5c27296d7b1e57abe0ac5cb27c3c3e60ae623a8962

SHA512
67ecd49cd748aa8869f5db1e5c9040e0f2eaeb77b47abdf9d79f2fdad72d335710706ed3b4513e3a54e6fe8a1fa0c92c940ecb034da3d295d133569a30199383

Download Submit
\Windows\SysWOW64\nethtsrv.exe

Filesize
176KB

MD5
4179d7e810547d4c9bf759087b3e39bc

SHA1
faf509094b28fd4bfea813d30c4a805394479153

SHA256
31066c57e73ab18e2581690b2a23eea5c9ac843cc45657237fdc78d7ee67662d

SHA512
5c952c1909ec272380d2b3c3dfb4da705c05de0dd847870067aab3a02c8eb49fbaffc044c42b970b11aef08144fd47fef7cde914fda2297a9c9241129fba20d8

Download Submit
\Windows\SysWOW64\netupdsrv.exe

Filesize
158KB

MD5
cf4b4da97b945e81cd3e4894a05aa880

SHA1
69cec0570ab9054adc9bb2289b7b0f5617de79dc

SHA256
767699cf1364d69caa08e04bbfe276949661aa520d5a2bf25a739a3942d09762

SHA512
b0fc5c88f9c74b51ba98bb158e8716186f5e9ea5ee77338618ee34a5df4ba289838a664902be1ad54fdc3f273671cabb9b754e5ca3e3d6328cd8f70045aff13d

Download Submit
memory/108-61-0x0000000000000000-mapping.dmp

Download
memory/296-60-0x0000000000000000-mapping.dmp

Download
memory/328-75-0x0000000000000000-mapping.dmp

Download
memory/964-69-0x0000000000000000-mapping.dmp

Download
memory/1104-58-0x0000000000000000-mapping.dmp

Download
memory/1692-57-0x0000000000000000-mapping.dmp

Download
memory/1868-54-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download
memory/1956-63-0x0000000000000000-mapping.dmp

Download