neshta | a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70

General

Target

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
Size

1.8MB
MD5

5d2b4bffce35ca15befad2715b330c11
SHA1

7d039fa071b85aa7af03aac1c60dd7a46e81bd34
SHA256

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70
SHA512

6c4e87edd6ed7384d95e631b0c3e1a2bbeb07153a2e4d94a26ae04a3c5606917ded33d7581bb2e204e21f448f495cc5dacf5d39b556623ac234457e3a81507cb

Score

10^/10

neshta persistence spyware upx

Malware Config

Signatures

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.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

Processes:

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

pid process

5000 a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

pid	process
5000	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\3582-490\a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe	upx
C:\Users\Admin\AppData\Local\Temp\3582-490\a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe	upx

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

Processes:

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

Drops file in Program Files directory 9 IoCs

Processes:

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

Drops file in Windows directory 1 IoCs

Processes:

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

description ioc process

File opened for modification C:\Windows\svchost.com a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Windows\svchost.com	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

Modifies registry class 1 IoCs

Processes:

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

description pid process

Token: SeDebugPrivilege 5000 a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

pid process

5000 a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

pid process

5000 a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

description	pid	process
Token: SeDebugPrivilege	5000	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

pid	process
5000	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

pid	process
5000	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

description	pid	process	target process
PID 768 wrote to memory of 5000	768	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
PID 768 wrote to memory of 5000	768	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
PID 768 wrote to memory of 5000	768	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe	a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

C:\Users\Admin\AppData\Local\Temp\a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
"C:\Users\Admin\AppData\Local\Temp\a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe"
1⤵
- Modifies system executable filetype association
- Checks computer location settings
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:768
- C:\Users\Admin\AppData\Local\Temp\3582-490\a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  PID:5000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

1

T1042

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3582-490\a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

Filesize
1.8MB

MD5
79632679f0677c3b59e7136bac1999f4

SHA1
7bb5f1fa06531f7102904b390663c062c313cad9

SHA256
c4f991235dc17424333b6438de30893ae1f32faa30b612f7d84adf9323aea15d

SHA512
38eb31d730f1d890c6f4e4bfb15a7116c40915ea730522dc8eb880a86fdfa5984a4233ece66edf18a2553c7db956d51caad1ca37fdaeebe015056f62d6a1a325

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\a42b5e32e50f93b2fa634e583b22f28ae22574bffd417e7119c741a36aa8ca70.exe

Filesize
1.8MB

MD5
79632679f0677c3b59e7136bac1999f4

SHA1
7bb5f1fa06531f7102904b390663c062c313cad9

SHA256
c4f991235dc17424333b6438de30893ae1f32faa30b612f7d84adf9323aea15d

SHA512
38eb31d730f1d890c6f4e4bfb15a7116c40915ea730522dc8eb880a86fdfa5984a4233ece66edf18a2553c7db956d51caad1ca37fdaeebe015056f62d6a1a325

Download Submit
memory/5000-130-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads