4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862

General

Target

4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
Size

603KB
MD5

21e5e6fc4da23b1d38cb779cdbf70b7c
SHA1

8468e03958bf7278c3901e7fa6c6cce787731fed
SHA256

4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862
SHA512

02a1c6e9a0f673e07d8b5cdcaf13971d99e09bb9fe29a0cec4c1d6298ea819f0acc6ac1c41e3bb25b54b210948d8397b1e22463ee56344c2c05e8b18e0329491
SSDEEP

12288:xIny5DYTNtBaWtN3RE0Gj4bFUIf/Cq74VRBD3s1+fX:NUTDA+aH0bFU+CqUVbAO

Score

8^/10

discovery

Malware Config

Signatures

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\system32\drivers\nethfdrv.sys	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe

Loads dropped DLL 5 IoCs

pid	Process
4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.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

description	ioc	Process
File created	C:\Windows\SysWOW64\hfpapi.dll	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
File created	C:\Windows\SysWOW64\installd.exe	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
File created	C:\Windows\SysWOW64\nethtsrv.exe	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
File created	C:\Windows\SysWOW64\netupdsrv.exe	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
File created	C:\Windows\SysWOW64\hfnapi.dll	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
File created	C:\Program Files (x86)\Common Files\Config\data.xml	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.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 12 IoCs

description	pid	Process	procid_target
PID 4348 wrote to memory of 3096	4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe	83
PID 4348 wrote to memory of 3096	4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe	83
PID 4348 wrote to memory of 3096	4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe	83
PID 3096 wrote to memory of 2148	3096	net.exe	85
PID 3096 wrote to memory of 2148	3096	net.exe	85
PID 3096 wrote to memory of 2148	3096	net.exe	85
PID 4348 wrote to memory of 4948	4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe	86
PID 4348 wrote to memory of 4948	4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe	86
PID 4348 wrote to memory of 4948	4348	4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe	86
PID 4948 wrote to memory of 4632	4948	net.exe	88
PID 4948 wrote to memory of 4632	4948	net.exe	88
PID 4948 wrote to memory of 4632	4948	net.exe	88

C:\Users\Admin\AppData\Local\Temp\4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.exe
"C:\Users\Admin\AppData\Local\Temp\4932da4213854fcd4ae7c014d5d1abd2fe0ed7acf4e6c143b328022ac5bd1862.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:4348
- C:\Windows\SysWOW64\net.exe
  net stop nethttpservice
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3096
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop nethttpservice
    3⤵
    PID:2148
- C:\Windows\SysWOW64\net.exe
  net stop serviceupdater
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4948
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop serviceupdater
    3⤵
    PID:4632
- C:\Windows\SysWOW64\installd.exe
  "C:\Windows\system32\installd.exe" nethfdrv
  2⤵
  PID:4732

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nsk3B48.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsk3B48.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsk3B48.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsk3B48.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nsk3B48.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
memory/4348-137-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download
memory/4348-142-0x0000000000360000-0x00000000007BE000-memory.dmp

Filesize
4.4MB

Download

Analysis

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