d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e

Analysis

max time kernel
293s
max time network
349s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
24/11/2022, 06:01

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General

Target

d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
Size

695KB
MD5

3ef432bbf8cf07c9211e2d782ea5a6b1
SHA1

e320f0a946261797d8da0a4bc540f619148d0271
SHA256

d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e
SHA512

708ebf43fd95c2cf5fa27b6726e37a4e5445990903e3e6af283f207911eb1e15fdf581eb5bd44cd02b8b176327857f2d2e1d9bfe6a87a1a2e049e05de8e672d0
SSDEEP

12288:8Abu3fQ+thk6Ezvbfo0TWNKuMu/sDj+nvnOfYrG0xVocIoMLJAFK4xhWt/:8AbuPPEzzf/puF/uynWmG0jzIb+pm

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	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe

Executes dropped EXE 2 IoCs

pid	Process
3952	installd.exe
3672	nethtsrv.exe

Loads dropped DLL 8 IoCs

pid	Process
1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
3952	installd.exe
3672	nethtsrv.exe
3672	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

description	ioc	Process
File created	C:\Windows\SysWOW64\netupdsrv.exe	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
File created	C:\Windows\SysWOW64\hfnapi.dll	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
File created	C:\Windows\SysWOW64\hfpapi.dll	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
File created	C:\Windows\SysWOW64\installd.exe	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
File created	C:\Windows\SysWOW64\nethtsrv.exe	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe

Drops file in Program Files directory 3 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\Config\data.xml	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
File created	C:\Program Files (x86)\Common Files\Config\ver.xml	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
File created	C:\Program Files (x86)\Common Files\config\uninstinethnfd.exe	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.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

pid	Process
648	Process not Found

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1084 wrote to memory of 4704	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	83
PID 1084 wrote to memory of 4704	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	83
PID 1084 wrote to memory of 4704	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	83
PID 4704 wrote to memory of 2748	4704	net.exe	85
PID 4704 wrote to memory of 2748	4704	net.exe	85
PID 4704 wrote to memory of 2748	4704	net.exe	85
PID 1084 wrote to memory of 3884	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	86
PID 1084 wrote to memory of 3884	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	86
PID 1084 wrote to memory of 3884	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	86
PID 3884 wrote to memory of 3476	3884	net.exe	88
PID 3884 wrote to memory of 3476	3884	net.exe	88
PID 3884 wrote to memory of 3476	3884	net.exe	88
PID 1084 wrote to memory of 3952	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	89
PID 1084 wrote to memory of 3952	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	89
PID 1084 wrote to memory of 3952	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	89
PID 1084 wrote to memory of 3672	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	91
PID 1084 wrote to memory of 3672	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	91
PID 1084 wrote to memory of 3672	1084	d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe	91

C:\Users\Admin\AppData\Local\Temp\d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.exe
"C:\Users\Admin\AppData\Local\Temp\d42aeb9660f29723735b5104fcc71d90c2cde96b6bc2bab1777cda976747507e.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:1084
- C:\Windows\SysWOW64\net.exe
  net stop nethttpservice
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4704
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop nethttpservice
    3⤵
    PID:2748
- C:\Windows\SysWOW64\net.exe
  net stop serviceupdater
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3884
- - C:\Windows\SysWOW64\net1.exe
    C:\Windows\system32\net1 stop serviceupdater
    3⤵
    PID:3476
- C:\Windows\SysWOW64\installd.exe
  "C:\Windows\system32\installd.exe" nethfdrv
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3952
- C:\Windows\SysWOW64\nethtsrv.exe
  "C:\Windows\system32\nethtsrv.exe" -nfdi
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  PID:3672

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:\Users\Admin\AppData\Local\Temp\nstB152.tmp\System.dll

Filesize
11KB

MD5
c17103ae9072a06da581dec998343fc1

SHA1
b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

SHA256
dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

SHA512
d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstB152.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstB152.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstB152.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

Download Submit
C:\Users\Admin\AppData\Local\Temp\nstB152.tmp\nsExec.dll

Filesize
6KB

MD5
acc2b699edfea5bf5aae45aba3a41e96

SHA1
d2accf4d494e43ceb2cff69abe4dd17147d29cc2

SHA256
168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

SHA512
e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

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

Filesize
106KB

MD5
7dd815f6ea982848a71866e967f031cc

SHA1
10038ac72bc6b26dc6fe819c0524e60eaab8e306

SHA256
adc16d3cc6bd399cfe809957ad6d4b27b2421c805c009dfd0ac5de82772b31cd

SHA512
4b5294e2b17b1812b2d1415a100fd99407d2c3ea31774dfbdd6943c553d5cb48a11cb6873a00c9f9eec34e472f2786ada7c08f23e3e8030eff24f81cbb04e008

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

Filesize
106KB

MD5
7dd815f6ea982848a71866e967f031cc

SHA1
10038ac72bc6b26dc6fe819c0524e60eaab8e306

SHA256
adc16d3cc6bd399cfe809957ad6d4b27b2421c805c009dfd0ac5de82772b31cd

SHA512
4b5294e2b17b1812b2d1415a100fd99407d2c3ea31774dfbdd6943c553d5cb48a11cb6873a00c9f9eec34e472f2786ada7c08f23e3e8030eff24f81cbb04e008

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

Filesize
106KB

MD5
7dd815f6ea982848a71866e967f031cc

SHA1
10038ac72bc6b26dc6fe819c0524e60eaab8e306

SHA256
adc16d3cc6bd399cfe809957ad6d4b27b2421c805c009dfd0ac5de82772b31cd

SHA512
4b5294e2b17b1812b2d1415a100fd99407d2c3ea31774dfbdd6943c553d5cb48a11cb6873a00c9f9eec34e472f2786ada7c08f23e3e8030eff24f81cbb04e008

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

Filesize
241KB

MD5
7163b4419c5c6f4ac8ea997b02772338

SHA1
a2aebd63f37842bd47afb6ed5dd701fb6ee2f59c

SHA256
dfc800c13c44ec9f076515a55c1382ac0f15e1410c0f53c79deac781f9a066b5

SHA512
ab9e3627c12d1c6de9e19cff537c703a45c0b55ef28108c3f949e84c7139ceb7d78fb65fc0a07d07b77a49fe557d785c42aa66f38ec2cdaa00f5f9cfb78800e6

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

Filesize
241KB

MD5
7163b4419c5c6f4ac8ea997b02772338

SHA1
a2aebd63f37842bd47afb6ed5dd701fb6ee2f59c

SHA256
dfc800c13c44ec9f076515a55c1382ac0f15e1410c0f53c79deac781f9a066b5

SHA512
ab9e3627c12d1c6de9e19cff537c703a45c0b55ef28108c3f949e84c7139ceb7d78fb65fc0a07d07b77a49fe557d785c42aa66f38ec2cdaa00f5f9cfb78800e6

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

Filesize
108KB

MD5
f6b33bd9c92672a535751aa95ef2fff2

SHA1
5b36fab4ac52705869d7cb7b4c8b990f84405168

SHA256
326feac22ea4f8013422aa231f4b21216ca7fa38b499aa9543face4a3569c552

SHA512
428e19a008ac5f82d40bdb1e7ecc6e840d1d7a2f0e89052c5e6b9e0d89d84694274101d1a95b95ee0953f99dae0a8cc3bcb02855c12893ad57a4a02677a6f1cf

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

Filesize
108KB

MD5
f6b33bd9c92672a535751aa95ef2fff2

SHA1
5b36fab4ac52705869d7cb7b4c8b990f84405168

SHA256
326feac22ea4f8013422aa231f4b21216ca7fa38b499aa9543face4a3569c552

SHA512
428e19a008ac5f82d40bdb1e7ecc6e840d1d7a2f0e89052c5e6b9e0d89d84694274101d1a95b95ee0953f99dae0a8cc3bcb02855c12893ad57a4a02677a6f1cf

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

Filesize
176KB

MD5
03cb1b626b043d78ba9b7adbfe91c0ad

SHA1
a7da08b20776657c1b57b2c66e99ed05e9bf7fb7

SHA256
bad06609b50688766cd0ce3b168b12b10c67cb3fadf42e1e0fdaa5c15ae08c3e

SHA512
7a98da9abf80620d2de7d2ccfa1ff9cb5a79fd960df5421b4282a73d3d2049e887d6d451b08b4dab36fda8f3913663fa98418b204d5eaca041a7e19dc60b939b

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

Filesize
176KB

MD5
03cb1b626b043d78ba9b7adbfe91c0ad

SHA1
a7da08b20776657c1b57b2c66e99ed05e9bf7fb7

SHA256
bad06609b50688766cd0ce3b168b12b10c67cb3fadf42e1e0fdaa5c15ae08c3e

SHA512
7a98da9abf80620d2de7d2ccfa1ff9cb5a79fd960df5421b4282a73d3d2049e887d6d451b08b4dab36fda8f3913663fa98418b204d5eaca041a7e19dc60b939b

Download Submit
memory/1084-132-0x0000000000340000-0x00000000007BE000-memory.dmp

Filesize
4.5MB

Download
memory/1084-133-0x0000000000340000-0x00000000007BE000-memory.dmp

Filesize
4.5MB

Download