neshta | 1553c72c054079021dafe5e75485d40a54190c0ef703c1f3cff2562f672dd083

General

Target

Monkey Island Crypter/Merged.exe
Size

455KB
MD5

9b94fed379a1df2b83fdbef292a5c2ef
SHA1

6b6e18e90afaa434b7d8a5dbc27a187b71324180
SHA256

f6adf8932350281f08f2357eb2ed14d2e2ace877b33f8e1d521c9ab04f227643
SHA512

c5b4c1ab96ebebe32c9dd43a6832176b70ec0e3ee0c7cf6f78c55989e6be2648f21fa6b0af6db96e52b54c4fa7c1d86c65afc8c465e262496e5d7b731d349cdc
SSDEEP

12288:mU9sjjUzqAApXhTRhGgJpcmWnour2ub2IxyuK79+:pzKX9R8gJpcmqoDumuKI

Score

10^/10

neshta persistence spyware

Malware Config

Signatures

Detect Neshta payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\file1.exe	family_neshta
C:\Users\Admin\AppData\Local\Temp\file1.exe	family_neshta

Modifies system executable filetype association 2 TTPs 1 IoCs
persistence

Modify Registry
T1112

Change Default File Association
T1042

Processes:

file1.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" file1.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

Processes:

file2.exefile1.exefile1.exe

pid process

4140 file2.exe
1136 file1.exe
4732 file1.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	file1.exe

pid	process
4140	file2.exe
1136	file1.exe
4732	file1.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

Processes:

Merged.exefile1.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	Merged.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	file1.exe

Drops file in Program Files directory 64 IoCs

Processes:

file1.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\BHO\IE_TO_~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.exe	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\NOTIFI~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13169~1.31\MICROS~2.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\MicrosoftEdgeUpdate.exe	file1.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	file1.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOF5E2~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\COOKIE~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\IDENTI~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\setup_wm.exe	file1.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmplayer.exe	file1.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmprph.exe	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\PWAHEL~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13169~1.31\MICROS~3.EXE	file1.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmlaunch.exe	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GO664E~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13169~1.31\MI9C33~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	file1.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\ELEVAT~1.EXE	file1.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe	file1.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOBD5D~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~2.EXE	file1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\msedge.exe	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\PWAHEL~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13169~1.31\MICROS~4.EXE	file1.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\INSTAL~1\setup.exe	file1.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~3.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\MSEDGE~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13169~1.31\MICROS~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~3.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13169~1.31\MI391D~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\Download\{F3C4F~1\13169~1.31\MICROS~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpshare.exe	file1.exe
File opened for modification	C:\PROGRA~3\Adobe\Setup\{AC76B~1\setup.exe	file1.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13169~1.31\MIA062~1.EXE	file1.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	file1.exe

Drops file in Windows directory 1 IoCs

Processes:

file1.exe

description ioc process

File opened for modification C:\Windows\svchost.com file1.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

Processes:

file1.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" file1.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

file2.exe

pid process

4140 file2.exe
4140 file2.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

file1.exe

pid process

4732 file1.exe

description	ioc	process
File opened for modification	C:\Windows\svchost.com	file1.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*"	file1.exe

pid	process
4140	file2.exe
4140	file2.exe

pid	process
4732	file1.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Merged.exefile2.exefile1.exe

description	pid	process	target process
PID 3380 wrote to memory of 4140	3380	Merged.exe	file2.exe
PID 3380 wrote to memory of 4140	3380	Merged.exe	file2.exe
PID 3380 wrote to memory of 4140	3380	Merged.exe	file2.exe
PID 4140 wrote to memory of 2532	4140	file2.exe	Explorer.EXE
PID 3380 wrote to memory of 1136	3380	Merged.exe	file1.exe
PID 3380 wrote to memory of 1136	3380	Merged.exe	file1.exe
PID 3380 wrote to memory of 1136	3380	Merged.exe	file1.exe
PID 4140 wrote to memory of 2532	4140	file2.exe	Explorer.EXE
PID 4140 wrote to memory of 2532	4140	file2.exe	Explorer.EXE
PID 4140 wrote to memory of 2532	4140	file2.exe	Explorer.EXE
PID 1136 wrote to memory of 4732	1136	file1.exe	file1.exe
PID 1136 wrote to memory of 4732	1136	file1.exe	file1.exe
PID 1136 wrote to memory of 4732	1136	file1.exe	file1.exe
PID 4140 wrote to memory of 2532	4140	file2.exe	Explorer.EXE
PID 4140 wrote to memory of 2532	4140	file2.exe	Explorer.EXE

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:2532

C:\Users\Admin\AppData\Local\Temp\Monkey Island Crypter\Merged.exe
"C:\Users\Admin\AppData\Local\Temp\Monkey Island Crypter\Merged.exe"
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3380

C:\Users\Admin\AppData\Local\Temp\file2.exe
"C:\Users\Admin\AppData\Local\Temp\file2.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4140

C:\Users\Admin\AppData\Local\Temp\file1.exe
"C:\Users\Admin\AppData\Local\Temp\file1.exe"
3⤵
- 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:1136

C:\Users\Admin\AppData\Local\Temp\3582-490\file1.exe
"C:\Users\Admin\AppData\Local\Temp\3582-490\file1.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4732

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\3582-490\file1.exe
Filesize
372KB

MD5
4f9d091e86e2a9718cad1719e04ea5fc

SHA1
d244d117ff9b908762988b6004119b06a06ac8f8

SHA256
828bbea0c8ba168c2e9fee36b42cde378f64537574430124924d2388507435bf

SHA512
0340391ced1c25e84540aead0bf50ca8e21da514b080bb2a50aa74fb36c542200fab0871277735952f6a5fd2058c746e95a6ca51672d7196459a257814275297

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\file1.exe
Filesize
372KB

MD5
4f9d091e86e2a9718cad1719e04ea5fc

SHA1
d244d117ff9b908762988b6004119b06a06ac8f8

SHA256
828bbea0c8ba168c2e9fee36b42cde378f64537574430124924d2388507435bf

SHA512
0340391ced1c25e84540aead0bf50ca8e21da514b080bb2a50aa74fb36c542200fab0871277735952f6a5fd2058c746e95a6ca51672d7196459a257814275297

Download Submit
C:\Users\Admin\AppData\Local\Temp\file1.exe
Filesize
412KB

MD5
292c796c2e2bbf7275de25c5cf3a5eec

SHA1
9ecaac42bc9bf107137e049f2cd430f4621fb067

SHA256
c7b8c5c8d08cc8b89ba7c038e473272595250b19b961683d8255dc322908498e

SHA512
7f0f5f08bfb6dcce66e56a49e791ec2d5795538636ac84bf05d319263aedd064ed8b28715e9dff909b8f76ffe378872212440cbfec19df92bb90ff1a4944668e

Download Submit
C:\Users\Admin\AppData\Local\Temp\file1.exe
Filesize
412KB

MD5
292c796c2e2bbf7275de25c5cf3a5eec

SHA1
9ecaac42bc9bf107137e049f2cd430f4621fb067

SHA256
c7b8c5c8d08cc8b89ba7c038e473272595250b19b961683d8255dc322908498e

SHA512
7f0f5f08bfb6dcce66e56a49e791ec2d5795538636ac84bf05d319263aedd064ed8b28715e9dff909b8f76ffe378872212440cbfec19df92bb90ff1a4944668e

Download Submit
C:\Users\Admin\AppData\Local\Temp\file2.exe
Filesize
39KB

MD5
18be43c31cfe75d34280cb0e6261bb5f

SHA1
c3eef4ae4b87143774a0e8f7c40d6f4c1c570d41

SHA256
c4376229d61d6f01ef5ff9da823828c20e76a1d93e1faf4bc4a85d6c56291ad2

SHA512
a97905de9083e0c710334c43c65bf8210e6ac7da00bebe30014fb45b2ba5395a75f237f7721ff26d9d9fcb6fa756d6b748e08031ebf453e7abc039b9dff247a0

Download Submit
C:\Users\Admin\AppData\Local\Temp\file2.exe
Filesize
39KB

MD5
18be43c31cfe75d34280cb0e6261bb5f

SHA1
c3eef4ae4b87143774a0e8f7c40d6f4c1c570d41

SHA256
c4376229d61d6f01ef5ff9da823828c20e76a1d93e1faf4bc4a85d6c56291ad2

SHA512
a97905de9083e0c710334c43c65bf8210e6ac7da00bebe30014fb45b2ba5395a75f237f7721ff26d9d9fcb6fa756d6b748e08031ebf453e7abc039b9dff247a0

Download Submit
memory/1136-138-0x0000000000000000-mapping.dmp

Download
memory/2532-142-0x000000007FFC0000-0x000000007FFC6000-memory.dmp

Filesize
24KB

Download
memory/3380-141-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/3380-132-0x0000000000400000-0x0000000000403000-memory.dmp

Filesize
12KB

Download
memory/4140-136-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4140-137-0x0000000010000000-0x0000000010012000-memory.dmp

Filesize
72KB

Download
memory/4140-133-0x0000000000000000-mapping.dmp

Download
memory/4732-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads