neshta | 6602f1c5f952685a673f0b6e108ebdc960fe73c0451fc3a3a05f3323c8c23a5d

General

Target

Dekont_20220926983636 pdf.exe
Size

107KB
MD5

26e2091577b401910c90bf4226c5689e
SHA1

c4e6893bfbed5810a5ad3568ed535b03ce7516bf
SHA256

6602f1c5f952685a673f0b6e108ebdc960fe73c0451fc3a3a05f3323c8c23a5d
SHA512

327c946223dc4510d3bff632d654bfb2032f531a022520e961268fde782787b4d802e514b80c79dccfe15ad6486e412b11722d7fbb16c2a145890bcf1e6b4fa5
SSDEEP

192:/c/lrDtxfakO8nUzAS4W8X9oZdMpjBXwjXjfbi76WxLR5d6vUUoRe:/yrDthakO8UkKZdoqjXjfbi76YRN

Score

10^/10

neshta persistence spyware

Malware Config

Signatures

Detect Neshta payload 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1776-143-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1776-144-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1776-145-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1776-146-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/1776-147-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1042

Processes:

InstallUtil.exe

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

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

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:

Dekont_20220926983636 pdf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	Dekont_20220926983636 pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Dekont_20220926983636 pdf.exe

description pid process target process

PID 976 set thread context of 1776 976 Dekont_20220926983636 pdf.exe InstallUtil.exe

description	pid	process	target process
PID 976 set thread context of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe

Drops file in Program Files directory 64 IoCs

Processes:

InstallUtil.exe

description	ioc	process
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeCore\104012~1.47\INSTAL~1\setup.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeCore\104012~1.47\MSEDGE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\msedge.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeCore\104012~1.47\IDENTI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeCore\104012~1.47\MSEDGE~2.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeCore\104012~1.47\NOTIFI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13165~1.21\MICROS~4.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\setup_wm.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~4.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~2.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~2.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\PWAHEL~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\Download\{F3C4F~1\13165~1.21\MICROS~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~3.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\MSEDGE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeCore\104012~1.47\MSEDGE~3.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13165~1.21\MICROS~2.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\ELEVAT~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeCore\104012~1.47\COOKIE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13165~1.21\MI391D~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13165~1.21\MI9C33~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13165~1.21\MIA062~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmprph.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\PWAHEL~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EdgeCore\104012~1.47\ELEVAT~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmplayer.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{CA675~1\VCREDI~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOBD5D~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~3.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpshare.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.71\GO664E~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\BHO\IE_TO_~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13165~1.21\MICROS~3.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	InstallUtil.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	InstallUtil.exe

Drops file in Windows directory 1 IoCs

Processes:

InstallUtil.exe

description ioc process

File opened for modification C:\Windows\svchost.com InstallUtil.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	InstallUtil.exe

Modifies registry class 1 IoCs

Processes:

InstallUtil.exe

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

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

2292 powershell.exe
2292 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Dekont_20220926983636 pdf.exepowershell.exe

description pid process

Token: SeDebugPrivilege 976 Dekont_20220926983636 pdf.exe
Token: SeDebugPrivilege 2292 powershell.exe

pid	process
2292	powershell.exe
2292	powershell.exe

description	pid	process
Token: SeDebugPrivilege	976	Dekont_20220926983636 pdf.exe
Token: SeDebugPrivilege	2292	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Dekont_20220926983636 pdf.exe

description	pid	process	target process
PID 976 wrote to memory of 2292	976	Dekont_20220926983636 pdf.exe	powershell.exe
PID 976 wrote to memory of 2292	976	Dekont_20220926983636 pdf.exe	powershell.exe
PID 976 wrote to memory of 2292	976	Dekont_20220926983636 pdf.exe	powershell.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe
PID 976 wrote to memory of 1776	976	Dekont_20220926983636 pdf.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\Dekont_20220926983636 pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Dekont_20220926983636 pdf.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:976
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANQA1AA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2292
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  - Modifies system executable filetype association
  - Drops file in Program Files directory
  - Drops file in Windows directory
  - Modifies registry class
  PID:1776

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\Roaming\MICROS~1\Windows\STARTM~1\Programs\aaaaaaa\MBMBMB~1.EXE

Filesize
107KB

MD5
26e2091577b401910c90bf4226c5689e

SHA1
c4e6893bfbed5810a5ad3568ed535b03ce7516bf

SHA256
6602f1c5f952685a673f0b6e108ebdc960fe73c0451fc3a3a05f3323c8c23a5d

SHA512
327c946223dc4510d3bff632d654bfb2032f531a022520e961268fde782787b4d802e514b80c79dccfe15ad6486e412b11722d7fbb16c2a145890bcf1e6b4fa5

Download Submit
memory/976-133-0x00000000056D0000-0x00000000056F2000-memory.dmp

Filesize
136KB

Download
memory/976-132-0x00000000001A0000-0x00000000001C0000-memory.dmp

Filesize
128KB

Download
memory/1776-142-0x0000000000000000-mapping.dmp

Download
memory/1776-147-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1776-146-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1776-145-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1776-144-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1776-143-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2292-136-0x0000000005110000-0x0000000005738000-memory.dmp

Filesize
6.2MB

Download
memory/2292-141-0x0000000006260000-0x000000000627A000-memory.dmp

Filesize
104KB

Download
memory/2292-140-0x0000000007380000-0x00000000079FA000-memory.dmp

Filesize
6.5MB

Download
memory/2292-139-0x0000000005D50000-0x0000000005D6E000-memory.dmp

Filesize
120KB

Download
memory/2292-138-0x0000000005740000-0x00000000057A6000-memory.dmp

Filesize
408KB

Download
memory/2292-137-0x0000000004FA0000-0x0000000005006000-memory.dmp

Filesize
408KB

Download
memory/2292-135-0x0000000002780000-0x00000000027B6000-memory.dmp

Filesize
216KB

Download
memory/2292-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads