2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f

Analysis

max time kernel
209s
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 10:30

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General

Target

2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
Size

602KB
MD5

397f046094bdf4e8682df33cb1e58586
SHA1

f50b7163649fc92312e3bbedd18f1077132af777
SHA256

2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f
SHA512

7fe50ae121a83e0cc84ef78279a9851936bca675cc80ebcb831c0d3ea70989fabbc6e744fae169c6380f498223c54e283201ecf55c67c84b06e838add1839d77
SSDEEP

12288:LIny5DYTupV5Sh6UbKwrwS9GNr7Z6X5eU2BecfCrg:zUTupnjUGw39GNr7Z6X499

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

Processes:

2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe

description ioc process

File created C:\Windows\system32\drivers\nethfdrv.sys 2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
Executes dropped EXE 3 IoCs

Processes:

installd.exenethtsrv.exenetupdsrv.exe

pid process

1632 installd.exe
1744 nethtsrv.exe
1672 netupdsrv.exe

description	ioc	process
File created	C:\Windows\system32\drivers\nethfdrv.sys	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe

pid	process
1632	installd.exe
1744	nethtsrv.exe
1672	netupdsrv.exe

Loads dropped DLL 9 IoCs

Processes:

2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exeinstalld.exenethtsrv.exe

pid	process
2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
1632	installd.exe
2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
1744	nethtsrv.exe
1744	nethtsrv.exe
2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.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:

2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe

description	ioc	process
File created	C:\Windows\SysWOW64\hfnapi.dll	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
File created	C:\Windows\SysWOW64\hfpapi.dll	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
File created	C:\Windows\SysWOW64\installd.exe	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
File created	C:\Windows\SysWOW64\nethtsrv.exe	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
File created	C:\Windows\SysWOW64\netupdsrv.exe	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe

Drops file in Program Files directory 3 IoCs

Processes:

2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe

description	ioc	process
File created	C:\Program Files (x86)\Common Files\Config\data.xml	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.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 34 IoCs

Processes:

2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exenet.exenet.exe

description	pid	process	target process
PID 2000 wrote to memory of 1064	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	net.exe
PID 2000 wrote to memory of 1064	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	net.exe
PID 2000 wrote to memory of 1064	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	net.exe
PID 2000 wrote to memory of 1064	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	net.exe
PID 1064 wrote to memory of 1492	1064	net.exe	net1.exe
PID 1064 wrote to memory of 1492	1064	net.exe	net1.exe
PID 1064 wrote to memory of 1492	1064	net.exe	net1.exe
PID 1064 wrote to memory of 1492	1064	net.exe	net1.exe
PID 2000 wrote to memory of 728	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	net.exe
PID 2000 wrote to memory of 728	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	net.exe
PID 2000 wrote to memory of 728	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	net.exe
PID 2000 wrote to memory of 728	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	net.exe
PID 728 wrote to memory of 872	728	net.exe	net1.exe
PID 728 wrote to memory of 872	728	net.exe	net1.exe
PID 728 wrote to memory of 872	728	net.exe	net1.exe
PID 728 wrote to memory of 872	728	net.exe	net1.exe
PID 2000 wrote to memory of 1632	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	installd.exe
PID 2000 wrote to memory of 1632	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	installd.exe
PID 2000 wrote to memory of 1632	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	installd.exe
PID 2000 wrote to memory of 1632	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	installd.exe
PID 2000 wrote to memory of 1632	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	installd.exe
PID 2000 wrote to memory of 1632	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	installd.exe
PID 2000 wrote to memory of 1632	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	installd.exe
PID 2000 wrote to memory of 1744	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	nethtsrv.exe
PID 2000 wrote to memory of 1744	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	nethtsrv.exe
PID 2000 wrote to memory of 1744	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	nethtsrv.exe
PID 2000 wrote to memory of 1744	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	nethtsrv.exe
PID 2000 wrote to memory of 1672	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	netupdsrv.exe
PID 2000 wrote to memory of 1672	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	netupdsrv.exe
PID 2000 wrote to memory of 1672	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	netupdsrv.exe
PID 2000 wrote to memory of 1672	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	netupdsrv.exe
PID 2000 wrote to memory of 1672	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	netupdsrv.exe
PID 2000 wrote to memory of 1672	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	netupdsrv.exe
PID 2000 wrote to memory of 1672	2000	2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe	netupdsrv.exe

C:\Users\Admin\AppData\Local\Temp\2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.exe
"C:\Users\Admin\AppData\Local\Temp\2cd62e1c43253756e84dedcd84540b19747c6ab0ec2c23528fa4b13f38115c3f.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:2000

C:\Windows\SysWOW64\net.exe
net stop nethttpservice
2⤵
- Suspicious use of WriteProcessMemory
PID:1064

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop nethttpservice
3⤵
PID:1492

C:\Windows\SysWOW64\net.exe
net stop serviceupdater
2⤵
- Suspicious use of WriteProcessMemory
PID:728

C:\Windows\SysWOW64\net1.exe
C:\Windows\system32\net1 stop serviceupdater
3⤵
PID:872

C:\Windows\SysWOW64\installd.exe
"C:\Windows\system32\installd.exe" nethfdrv
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1632

C:\Windows\SysWOW64\nethtsrv.exe
"C:\Windows\system32\nethtsrv.exe" -nfdi
2⤵
- Executes dropped EXE
- Loads dropped DLL
PID:1744

C:\Windows\SysWOW64\netupdsrv.exe
"C:\Windows\system32\netupdsrv.exe" -nfdi
2⤵
- Executes dropped EXE
PID:1672

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
4b4ffdc7a3cc033af56e947f84c788d9

SHA1
f5bd9bf68dd153a82d9dfcc33c427a82c35383c9

SHA256
a62eada35841380534917d90e5153e15ae703949b9a9629943ae6a9214dc3081

SHA512
0ec4541676b30b2cce07fb9b6816747992a9a28cf714467037023124b12f618baa3905de18d33739d50def6557d946d75bd25a7aeace03b3fa15d32b8025ce2e

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

Filesize
241KB

MD5
3e9931c5efb27432cf735db357d697f1

SHA1
ce7a0ca2c33eb72dcdbff2660ed6bddcb74ab1a1

SHA256
34cfdd20c333b304dd38dce4c9727b1bb838f69337911bdb027ea8d9a3f5cfb4

SHA512
c12870f2463882795ff84fdc83c949ddc589c4ce7c79d34d56cce09901d539ef7f189dffb0759763f082b05d2e5d6693c1d9c9e280e517bf3473979a731e0658

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

Filesize
108KB

MD5
1ff3f7dfb0b3fc7555956b56b1a413c0

SHA1
8f3c43fc94c70589d723ffe6876e56340bdde7f9

SHA256
867ef4934547e4a49f3b7855f19ec57257fc9643bdf602f4c2785fd230f6303d

SHA512
9a25017cf506e9e5a91e8913d468f0ea604ff2332761261027045db832427a704604b6ddc6174de8bf3f00397df85c19ad76f2cab70664f8937142acc0d1fecc

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

Filesize
176KB

MD5
4d2d5d03bfc02bf5aaa52422dc249206

SHA1
c40cf25d771155ec182cd85806d289a11a5e5024

SHA256
2a92c8d127c969a1c06cf568d0b4468a89c7a7c6bd4cc4a41b510e7fea4c37df

SHA512
52649485d243dad1d2c833f0ab2e8d9dbd0cedff697f389e517e0836483ae5c78e80b8589e975d61452267a3bdd317256c76c9ab7d8b2c3281ec67a27d582d85

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

Filesize
159KB

MD5
7160523a3d0690fc5ffed7f4d87c7e47

SHA1
501d3930a43c6e62dfe98d37c0c359665367270b

SHA256
8c6b561ce699f6df33a0dd1407b328dfe00dc56e22a2844456e4cc607c806baa

SHA512
d363c344169ebd49235dc5c65bf2c5b13279cd3bb485d44cac92d2759d292d2f5b1bababbeed82c96897bce41cfdbafa5e55939db5e557a3390d9e6efade6b0f

Download Submit
\Users\Admin\AppData\Local\Temp\nsz9DF7.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
\Users\Admin\AppData\Local\Temp\nsz9DF7.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
\Users\Admin\AppData\Local\Temp\nsz9DF7.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
4b4ffdc7a3cc033af56e947f84c788d9

SHA1
f5bd9bf68dd153a82d9dfcc33c427a82c35383c9

SHA256
a62eada35841380534917d90e5153e15ae703949b9a9629943ae6a9214dc3081

SHA512
0ec4541676b30b2cce07fb9b6816747992a9a28cf714467037023124b12f618baa3905de18d33739d50def6557d946d75bd25a7aeace03b3fa15d32b8025ce2e

Download Submit
\Windows\SysWOW64\hfnapi.dll

Filesize
106KB

MD5
4b4ffdc7a3cc033af56e947f84c788d9

SHA1
f5bd9bf68dd153a82d9dfcc33c427a82c35383c9

SHA256
a62eada35841380534917d90e5153e15ae703949b9a9629943ae6a9214dc3081

SHA512
0ec4541676b30b2cce07fb9b6816747992a9a28cf714467037023124b12f618baa3905de18d33739d50def6557d946d75bd25a7aeace03b3fa15d32b8025ce2e

Download Submit
\Windows\SysWOW64\hfpapi.dll

Filesize
241KB

MD5
3e9931c5efb27432cf735db357d697f1

SHA1
ce7a0ca2c33eb72dcdbff2660ed6bddcb74ab1a1

SHA256
34cfdd20c333b304dd38dce4c9727b1bb838f69337911bdb027ea8d9a3f5cfb4

SHA512
c12870f2463882795ff84fdc83c949ddc589c4ce7c79d34d56cce09901d539ef7f189dffb0759763f082b05d2e5d6693c1d9c9e280e517bf3473979a731e0658

Download Submit
\Windows\SysWOW64\installd.exe

Filesize
108KB

MD5
1ff3f7dfb0b3fc7555956b56b1a413c0

SHA1
8f3c43fc94c70589d723ffe6876e56340bdde7f9

SHA256
867ef4934547e4a49f3b7855f19ec57257fc9643bdf602f4c2785fd230f6303d

SHA512
9a25017cf506e9e5a91e8913d468f0ea604ff2332761261027045db832427a704604b6ddc6174de8bf3f00397df85c19ad76f2cab70664f8937142acc0d1fecc

Download Submit
\Windows\SysWOW64\nethtsrv.exe

Filesize
176KB

MD5
4d2d5d03bfc02bf5aaa52422dc249206

SHA1
c40cf25d771155ec182cd85806d289a11a5e5024

SHA256
2a92c8d127c969a1c06cf568d0b4468a89c7a7c6bd4cc4a41b510e7fea4c37df

SHA512
52649485d243dad1d2c833f0ab2e8d9dbd0cedff697f389e517e0836483ae5c78e80b8589e975d61452267a3bdd317256c76c9ab7d8b2c3281ec67a27d582d85

Download Submit
\Windows\SysWOW64\netupdsrv.exe

Filesize
159KB

MD5
7160523a3d0690fc5ffed7f4d87c7e47

SHA1
501d3930a43c6e62dfe98d37c0c359665367270b

SHA256
8c6b561ce699f6df33a0dd1407b328dfe00dc56e22a2844456e4cc607c806baa

SHA512
d363c344169ebd49235dc5c65bf2c5b13279cd3bb485d44cac92d2759d292d2f5b1bababbeed82c96897bce41cfdbafa5e55939db5e557a3390d9e6efade6b0f

Download Submit
memory/728-61-0x0000000000000000-mapping.dmp

Download
memory/872-62-0x0000000000000000-mapping.dmp

Download
memory/1064-58-0x0000000000000000-mapping.dmp

Download
memory/1492-59-0x0000000000000000-mapping.dmp

Download
memory/1632-65-0x0000000000000000-mapping.dmp

Download
memory/1672-77-0x0000000000000000-mapping.dmp

Download
memory/1744-71-0x0000000000000000-mapping.dmp

Download
memory/2000-55-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/2000-63-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/2000-54-0x0000000075C11000-0x0000000075C13000-memory.dmp

Filesize
8KB

Download