neshta | 2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b

Analysis

max time kernel
166s
max time network
174s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2022, 17:58

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General

Target
2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe
Size 230KB
Sample221001-wkhv3aaefn
SHA256 2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b
MD5 630ba5592e53294429594cc95848cbb0
SHA1 245f6075d4e7f4411abc5319a80999606dc5c0b1
SHA512 80a4517567ad4c28ac7c4591b6997ca9b9efc28975ca9e42b43499f7932de0379f02821b29af54162bdc6cdde9ff1003cb191dbefdaf3ce1def9da7cd067307b
SSDEEP 3072:sr85Cn7Ej5pY4WCmZwmNStxKuHbzsqO30hBe9JZN/avJrx0+/tOQ+:k9n7ElpY4WCJOEhBeDj0JF7
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

neshta persistence spyware

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe

Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
persistence spyware neshta

Executes dropped EXE 1 IoCs

pid	Process
224	2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1384 wrote to memory of 224	1384	2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe	84
PID 1384 wrote to memory of 224	1384	2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe	84

C:\Users\Admin\AppData\Local\Temp\2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe
"C:\Users\Admin\AppData\Local\Temp\2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe"
1⤵
- Modifies system executable filetype association
- Checks computer location settings
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Users\Admin\AppData\Local\Temp\3582-490\2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe"
  2⤵
  - Executes dropped EXE
  PID:224

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

T1042

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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

2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe

Path C:\Users\Admin\AppData\Local\Temp\3582-490\2da493e755264e80ac6ba0cb79f71d75c9bdbc8adceac9b559ad077f2e241e4b.exe
Size 189KB
SHA256 2220b8f4d11849b1b9abd5ba634ef7afa8bcfa4d0174d636eec349c080425ab6
MD5 3a417c5bb5d624d54265eeb9c638d4cb
SHA1 45c35c9456273948756fe70490e1c0cac8b75723
SHA512 9cd476b6adea02cc101ade405c360f2bfed1f46cf03335d5be4db1c8dc5f6b4e08dd1206e874e46016b950c74e34f7a3a276973698af4e8a62d80d204b2f4790
SSDEEP 3072:5N/avJrx0+/tOQ+n7Ej5pY4WCmZwmNStxKuHbzsqO30hBe9J:D0JF7q7ElpY4WCJOEhBeD
MD5 SHA1 SHA512 SSDEEP

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