e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5

Analysis

max time kernel
181s
max time network
34s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
23-11-2022 10:08

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General

Target

e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
Size

602KB
MD5

6c3bfffc37e6f91fbcd8ea2428052522
SHA1

5ade3f88abb718d7bf4b4ccbddd5d3d77afe56ce
SHA256

e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5
SHA512

854a4b2d2e4bbe7ad73fdcaef3fa57e2342a3536166bf6339be96a41b1b437bdedf7a6d4ed556b25ef8e0c2c6155777e587f4dde0daede8e2da177e7a6ec4db7
SSDEEP

12288:4Iny5DYTrF4Xm5aii2zg4cE23tHNgtBcK:WUTrF4Xm5aNkjFrv

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe

description ioc process

File created C:\Windows\system32\drivers\nethfdrv.sys e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
Executes dropped EXE 2 IoCs

Processes:

installd.exenethtsrv.exe

pid process

1520 installd.exe
1972 nethtsrv.exe

description	ioc	process
File created	C:\Windows\system32\drivers\nethfdrv.sys	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe

pid	process
1520	installd.exe
1972	nethtsrv.exe

Loads dropped DLL 8 IoCs

Processes:

e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exeinstalld.exenethtsrv.exe

pid	process
1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
1520	installd.exe
1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
1972	nethtsrv.exe
1972	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:

e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe

description	ioc	process
File created	C:\Windows\SysWOW64\hfpapi.dll	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
File created	C:\Windows\SysWOW64\installd.exe	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
File created	C:\Windows\SysWOW64\nethtsrv.exe	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
File created	C:\Windows\SysWOW64\netupdsrv.exe	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
File created	C:\Windows\SysWOW64\hfnapi.dll	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe

Drops file in Program Files directory 3 IoCs

Processes:

e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\Config\data.xml	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.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 27 IoCs

Processes:

e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exenet.exenet.exe

description	pid	process	target process
PID 1260 wrote to memory of 692	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	net.exe
PID 1260 wrote to memory of 692	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	net.exe
PID 1260 wrote to memory of 692	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	net.exe
PID 1260 wrote to memory of 692	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	net.exe
PID 692 wrote to memory of 588	692	net.exe	net1.exe
PID 692 wrote to memory of 588	692	net.exe	net1.exe
PID 692 wrote to memory of 588	692	net.exe	net1.exe
PID 692 wrote to memory of 588	692	net.exe	net1.exe
PID 1260 wrote to memory of 764	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	net.exe
PID 1260 wrote to memory of 764	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	net.exe
PID 1260 wrote to memory of 764	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	net.exe
PID 1260 wrote to memory of 764	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	net.exe
PID 764 wrote to memory of 2032	764	net.exe	net1.exe
PID 764 wrote to memory of 2032	764	net.exe	net1.exe
PID 764 wrote to memory of 2032	764	net.exe	net1.exe
PID 764 wrote to memory of 2032	764	net.exe	net1.exe
PID 1260 wrote to memory of 1520	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	installd.exe
PID 1260 wrote to memory of 1520	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	installd.exe
PID 1260 wrote to memory of 1520	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	installd.exe
PID 1260 wrote to memory of 1520	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	installd.exe
PID 1260 wrote to memory of 1520	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	installd.exe
PID 1260 wrote to memory of 1520	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	installd.exe
PID 1260 wrote to memory of 1520	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	installd.exe
PID 1260 wrote to memory of 1972	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	nethtsrv.exe
PID 1260 wrote to memory of 1972	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	nethtsrv.exe
PID 1260 wrote to memory of 1972	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	nethtsrv.exe
PID 1260 wrote to memory of 1972	1260	e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe	nethtsrv.exe

C:\Users\Admin\AppData\Local\Temp\e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.exe
"C:\Users\Admin\AppData\Local\Temp\e93993833f0f8d922573773d984e965077ba91ec5f24329f87a87c94e8110fe5.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:1260

C:\Windows\SysWOW64\net.exe
net stop nethttpservice
2⤵
- Suspicious use of WriteProcessMemory
PID:692

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop nethttpservice
3⤵
PID:588

C:\Windows\SysWOW64\net.exe
net stop serviceupdater
2⤵
- Suspicious use of WriteProcessMemory
PID:764

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop serviceupdater
3⤵
PID:2032

C:\Windows\SysWOW64\installd.exe
"C:\Windows\system32\installd.exe" nethfdrv
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1520

C:\Windows\SysWOW64\nethtsrv.exe
"C:\Windows\system32\nethtsrv.exe" -nfdi
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1972

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
fa49e170d952c74eea1bcce77133c91d

SHA1
642c870a9ee758967949deea66a88317f9128b37

SHA256
721c9bca63b7a422dbb874d5ee7756d9c03de8444bdc905915f3b7765b9d4ed0

SHA512
29eafe241359cad41cf5559502625ace84cd2f3ae348ede4e991167435d2f177a4abaa58701674aaeb833eae33174655677716d4511a3e29f1a7a21c254e1a9f

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

Filesize
241KB

MD5
019d14ee8e762d6fe8d76eb54fe1af36

SHA1
ef104c2228369c58f4e2e163b8a850b6f6d773c7

SHA256
b51a004d1a09d8fd512f9d2c76f2edfa586c9968f9c94d9c30bc7c5d89273823

SHA512
ba6b2ba0a7933b8d5a460b0bb3fb25d945ae035c7d2e44091881313334c28c4e28c1f4e0ea7671541dcdc0ba45c927e062050e038ae3716200ec51ec0c95dc9a

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

Filesize
108KB

MD5
7e9728ac37ab7180f47cef8355d5564c

SHA1
cfb3795efcdbcbd93af1b35eb306c56fe64d203b

SHA256
7e2da87a816b6cfe4c4955901e8f81519a87eff4380bb16b7601d170853f74bf

SHA512
3bde96ef4583436676e5c2b21cdfad78ab31ff152f0b432537b0ee03d72666b53051889f821589a2cd65a30c19d59120132da7e934e3bfe88f9332fa26c96d80

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

Filesize
176KB

MD5
d004a451a3a1e1bcab5fc6ad226c76a0

SHA1
46659fe82fd9b305afdf94e693ee3c6541732203

SHA256
369e80419d5124018cf2afad5dd448807aa39b41664f7695ab27d20f4ab011e8

SHA512
c4dd781689161bf76d4f6d2f369f6646308d468ee192175235be7a8477f4e602fead2142364f97137e4e0b6eb0ad90eaa3ad452c074a7ae8bfd255ee4779f785

Download Submit
\Users\Admin\AppData\Local\Temp\nsj3565.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
\Users\Admin\AppData\Local\Temp\nsj3565.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
\Users\Admin\AppData\Local\Temp\nsj3565.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
fa49e170d952c74eea1bcce77133c91d

SHA1
642c870a9ee758967949deea66a88317f9128b37

SHA256
721c9bca63b7a422dbb874d5ee7756d9c03de8444bdc905915f3b7765b9d4ed0

SHA512
29eafe241359cad41cf5559502625ace84cd2f3ae348ede4e991167435d2f177a4abaa58701674aaeb833eae33174655677716d4511a3e29f1a7a21c254e1a9f

Download Submit
\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
fa49e170d952c74eea1bcce77133c91d

SHA1
642c870a9ee758967949deea66a88317f9128b37

SHA256
721c9bca63b7a422dbb874d5ee7756d9c03de8444bdc905915f3b7765b9d4ed0

SHA512
29eafe241359cad41cf5559502625ace84cd2f3ae348ede4e991167435d2f177a4abaa58701674aaeb833eae33174655677716d4511a3e29f1a7a21c254e1a9f

Download Submit
\Windows\SysWOW64\hfpapi.dll

Filesize
241KB

MD5
019d14ee8e762d6fe8d76eb54fe1af36

SHA1
ef104c2228369c58f4e2e163b8a850b6f6d773c7

SHA256
b51a004d1a09d8fd512f9d2c76f2edfa586c9968f9c94d9c30bc7c5d89273823

SHA512
ba6b2ba0a7933b8d5a460b0bb3fb25d945ae035c7d2e44091881313334c28c4e28c1f4e0ea7671541dcdc0ba45c927e062050e038ae3716200ec51ec0c95dc9a

Download Submit
\Windows\SysWOW64\installd.exe

Filesize
108KB

MD5
7e9728ac37ab7180f47cef8355d5564c

SHA1
cfb3795efcdbcbd93af1b35eb306c56fe64d203b

SHA256
7e2da87a816b6cfe4c4955901e8f81519a87eff4380bb16b7601d170853f74bf

SHA512
3bde96ef4583436676e5c2b21cdfad78ab31ff152f0b432537b0ee03d72666b53051889f821589a2cd65a30c19d59120132da7e934e3bfe88f9332fa26c96d80

Download Submit
\Windows\SysWOW64\nethtsrv.exe

Filesize
176KB

MD5
d004a451a3a1e1bcab5fc6ad226c76a0

SHA1
46659fe82fd9b305afdf94e693ee3c6541732203

SHA256
369e80419d5124018cf2afad5dd448807aa39b41664f7695ab27d20f4ab011e8

SHA512
c4dd781689161bf76d4f6d2f369f6646308d468ee192175235be7a8477f4e602fead2142364f97137e4e0b6eb0ad90eaa3ad452c074a7ae8bfd255ee4779f785

Download Submit
memory/588-60-0x0000000000000000-mapping.dmp

Download
memory/692-59-0x0000000000000000-mapping.dmp

Download
memory/764-62-0x0000000000000000-mapping.dmp

Download
memory/1260-54-0x0000000075D51000-0x0000000075D53000-memory.dmp

Filesize
8KB

Download
memory/1260-58-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/1260-55-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/1520-65-0x0000000000000000-mapping.dmp

Download
memory/1972-71-0x0000000000000000-mapping.dmp

Download
memory/2032-63-0x0000000000000000-mapping.dmp

Download