neshta | 383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f

General

Target

383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f.exe
Size

733KB
MD5

18e67930a20cde9e27ac3169615b8abc
SHA1

8c36f92233be12440c62aa71b47b8f92fe4eec7e
SHA256

383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f
SHA512

431339f98539e75e97745a1efbdc194156f331821ba62f95961b4ea8b1906f31459b4fe96cdca249115a51a0003bd8d22db51ded29775f4a3894b05f88c1f031
SSDEEP

12288:qhkDgouVA2nxKkorvdRgQriDwOIxmxiZnYQE7PJcE4aTA25b8jyrSG:qRmJkcoQricOIQxiZY1iaTA2pJB

Score

10^/10

Malware Config

Signatures

Detect Neshta payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000700000002314b-133.dat	family_neshta
behavioral2/files/0x000700000002314b-134.dat	family_neshta

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\" %*"	DLL Files Fixer Activator.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 3 IoCs

pid	Process
1996	DLL Files Fixer Activator.exe
3920	conhost.exe
3996	DLL Files Fixer Activator.exe

Checks computer location settings 2 TTPs 2 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-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	DLL Files Fixer Activator.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f.exe

Drops file in Program Files directory 14 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	DLL Files Fixer Activator.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	DLL Files Fixer Activator.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	DLL Files Fixer Activator.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\" %*"	DLL Files Fixer Activator.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3996	DLL Files Fixer Activator.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 1996	1960	383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f.exe	86
PID 1960 wrote to memory of 1996	1960	383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f.exe	86
PID 1960 wrote to memory of 1996	1960	383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f.exe	86
PID 1960 wrote to memory of 3920	1960	383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f.exe	88
PID 1960 wrote to memory of 3920	1960	383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f.exe	88
PID 1996 wrote to memory of 3996	1996	DLL Files Fixer Activator.exe	89
PID 1996 wrote to memory of 3996	1996	DLL Files Fixer Activator.exe	89
PID 1996 wrote to memory of 3996	1996	DLL Files Fixer Activator.exe	89

C:\Users\Admin\AppData\Local\Temp\383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f.exe
"C:\Users\Admin\AppData\Local\Temp\383a473a44c5b8009f91f15340634fe3786dd2e57cdd677f45505aa622d03c8f.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Temp\DLL Files Fixer Activator.exe
  "C:\Users\Admin\AppData\Local\Temp\DLL Files Fixer Activator.exe"
  2⤵
  - Modifies system executable filetype association
  - Executes dropped EXE
  - Checks computer location settings
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1996
- - C:\Users\Admin\AppData\Local\Temp\3582-490\DLL Files Fixer Activator.exe
    "C:\Users\Admin\AppData\Local\Temp\3582-490\DLL Files Fixer Activator.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetWindowsHookEx
    PID:3996
- C:\Users\Admin\AppData\Local\Temp\conhost.exe
  "C:\Users\Admin\AppData\Local\Temp\conhost.exe"
  2⤵
  - Executes dropped EXE
  PID:3920

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\DLL Files Fixer Activator.exe

Filesize
644KB

MD5
a81137304bc201ac1b9a557675f68168

SHA1
6e3a1e82ff71821e0663ff3211c713f9ce166dd2

SHA256
4b4d14f262bddbd4ef91519694a813e0d640d13ef3122ecf6aae2a0c12d8ba86

SHA512
2bab7eb32599beee8995e1a901c4de327eac770b8bb7a7656658d31b5ab061f4d0bdae160975199246aac92b99e2683c0879649cc7cad9b1d59bdc338b9d68ec

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\DLL Files Fixer Activator.exe

Filesize
644KB

MD5
a81137304bc201ac1b9a557675f68168

SHA1
6e3a1e82ff71821e0663ff3211c713f9ce166dd2

SHA256
4b4d14f262bddbd4ef91519694a813e0d640d13ef3122ecf6aae2a0c12d8ba86

SHA512
2bab7eb32599beee8995e1a901c4de327eac770b8bb7a7656658d31b5ab061f4d0bdae160975199246aac92b99e2683c0879649cc7cad9b1d59bdc338b9d68ec

Download Submit
C:\Users\Admin\AppData\Local\Temp\DLL Files Fixer Activator.exe

Filesize
685KB

MD5
db26308a86da5a41d83b67e96a2293b7

SHA1
316760d73b2145d80d93cf754cc33ddeb2f3d439

SHA256
b83c8a68e3f965fb22785bea54765698fd7eb41c9fe981cfec051f49fabef51a

SHA512
12854dbeed87c892731abbee4b2c96570731e17f74d108d31da52d02dfbb3210f79fb803fb17c313fb2c17f8361ff041497b41b445053c39e3c7734e451040f3

Download Submit
C:\Users\Admin\AppData\Local\Temp\DLL Files Fixer Activator.exe

Filesize
685KB

MD5
db26308a86da5a41d83b67e96a2293b7

SHA1
316760d73b2145d80d93cf754cc33ddeb2f3d439

SHA256
b83c8a68e3f965fb22785bea54765698fd7eb41c9fe981cfec051f49fabef51a

SHA512
12854dbeed87c892731abbee4b2c96570731e17f74d108d31da52d02dfbb3210f79fb803fb17c313fb2c17f8361ff041497b41b445053c39e3c7734e451040f3

Download Submit
C:\Users\Admin\AppData\Local\Temp\conhost.exe

Filesize
29KB

MD5
f322709921ddf81c7ef639e8c53862ca

SHA1
9c2506c58e39d322a5fa2473ec9ec61f7ded5dd4

SHA256
ef7b903dafffa373c1db602575336883c5ff4da69fc08fc73ab27ee402b4e858

SHA512
e9f1300d6d7b53015190271b6bdf8c847cca0a6a9754942353de5575912e30bfac2b6fa48708a1ed1dfcb7ad20bf6af344d9121435fa7ce66bc527a57e47cac0

Download Submit
C:\Users\Admin\AppData\Local\Temp\conhost.exe

Filesize
29KB

MD5
f322709921ddf81c7ef639e8c53862ca

SHA1
9c2506c58e39d322a5fa2473ec9ec61f7ded5dd4

SHA256
ef7b903dafffa373c1db602575336883c5ff4da69fc08fc73ab27ee402b4e858

SHA512
e9f1300d6d7b53015190271b6bdf8c847cca0a6a9754942353de5575912e30bfac2b6fa48708a1ed1dfcb7ad20bf6af344d9121435fa7ce66bc527a57e47cac0

Download Submit
memory/3920-143-0x00007FFF6D700000-0x00007FFF6E136000-memory.dmp

Filesize
10.2MB

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Analysis

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