neshta | 35bdc413a651b9fbfac9ad86a112c55a07f0fcfc3f698eb03f26154ad9b5ee1e

Analysis

max time kernel
94s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-12-2024 15:49

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General

Target

ZagreuS Decryptor.exe
Size

400KB
MD5

d663f543088412766bf715949784ad88
SHA1

a35f4737cc94ddc534280b948015a1a93ab2fa92
SHA256

35bdc413a651b9fbfac9ad86a112c55a07f0fcfc3f698eb03f26154ad9b5ee1e
SHA512

6e9a17a0716645bff38be6284efb6e857f2e8c2df01e3f92d783d8c71f522da1c9af87821ca3c78810f2c2927d3a22361ccfa1d2ae8a6fb48f83dfb67cf2eda3
SSDEEP

6144:k9/hTCcfUZrSecumlgSW6gXwQfLdBJjQ2wrVYijlFPmM8xx5YlX3M:whWcfr/W6gXwsLdBJj2rVYijlFPex+BM

Score

10^/10

neshta discovery persistence spyware stealer

Malware Config

Signatures

Detect Neshta payload 4 IoCs

resource	yara_rule
behavioral2/files/0x000600000002021e-24.dat	family_neshta
behavioral2/memory/3832-105-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/3832-110-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral2/memory/3832-112-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	ZagreuS Decryptor.exe

Executes dropped EXE 1 IoCs

pid	Process
3636	ZagreuS Decryptor.exe

Modifies system executable filetype association 2 TTPs 1 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

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

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOBD5D~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\PWAHEL~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Oracle\Java\javapath\java.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~2.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpconfig.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\IDENTI~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~3.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmpshare.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WI8A19~1\ImagingDevices.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~3.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MID1AD~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\DISABL~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\INSTAL~1\setup.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~3.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~2.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wab.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmlaunch.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GO664E~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\BHO\IE_TO_~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\setup_wm.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF5AF~1\WINDOW~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\COOKIE~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~3\ACCESS~1\wordpad.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\MSEDGE~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOOGLE~4.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MI9C33~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\wmplayer.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MIA062~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~3\MICROS~1\CLICKT~1\{9AC08~1\INTEGR~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{63880~1\WINDOW~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\msedge.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\msedge.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\EDGEUP~1\13147~1.37\MICROS~4.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\wabmig.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{D87AE~1\WINDOW~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.371\GOF5E2~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ExtExport.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\INTERN~1\iexplore.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\ELEVAT~1.EXE	ZagreuS Decryptor.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	ZagreuS Decryptor.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ZagreuS Decryptor.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ZagreuS Decryptor.exe

Modifies registry class 1 IoCs

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

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3832 wrote to memory of 3636	3832	ZagreuS Decryptor.exe	84
PID 3832 wrote to memory of 3636	3832	ZagreuS Decryptor.exe	84
PID 3832 wrote to memory of 3636	3832	ZagreuS Decryptor.exe	84

C:\Users\Admin\AppData\Local\Temp\ZagreuS Decryptor.exe
"C:\Users\Admin\AppData\Local\Temp\ZagreuS Decryptor.exe"
1⤵
- Checks computer location settings
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3832
- C:\Users\Admin\AppData\Local\Temp\3582-490\ZagreuS Decryptor.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\ZagreuS Decryptor.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:3636

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

Filesize
86KB

MD5
3b73078a714bf61d1c19ebc3afc0e454

SHA1
9abeabd74613a2f533e2244c9ee6f967188e4e7e

SHA256
ded54d1fcca07b6bff2bc3b9a1131eac29ff1f836e5d7a7c5c325ec5abe96e29

SHA512
75959d4e8a7649c3268b551a2a378e6d27c0bfb03d2422ebeeb67b0a3f78c079473214057518930f2d72773ce79b106fd2d78405e8e3d8883459dcbb49c163c4

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

Filesize
360KB

MD5
9a34fd66797fd0f366cd47851eb8eaf0

SHA1
b86b2aeb688d3ff0b6f6066fb1ac71a3bb406ca2

SHA256
e2f0ec0293882487de6d2ec0795e92ad695588a7b0b9d2ba5173284bbe493ffd

SHA512
d7600f3a73af22917f067ce26f12dc13708652f4745a58cfea9433b2b2a0844087062c26b6e398de80004526fe36a918709c3eb57d7da888683161a9c7c862bd

Download Submit
memory/3636-19-0x0000000004D00000-0x0000000004D0A000-memory.dmp

Filesize
40KB

Download
memory/3636-20-0x0000000004E90000-0x0000000004EE6000-memory.dmp

Filesize
344KB

Download
memory/3636-15-0x0000000009410000-0x00000000094AC000-memory.dmp

Filesize
624KB

Download
memory/3636-16-0x0000000009A60000-0x000000000A004000-memory.dmp

Filesize
5.6MB

Download
memory/3636-17-0x0000000073C20000-0x00000000743D0000-memory.dmp

Filesize
7.7MB

Download
memory/3636-18-0x0000000004F30000-0x0000000004FC2000-memory.dmp

Filesize
584KB

Download
memory/3636-13-0x00000000003C0000-0x0000000000422000-memory.dmp

Filesize
392KB

Download
memory/3636-14-0x0000000002690000-0x00000000026A2000-memory.dmp

Filesize
72KB

Download
memory/3636-12-0x0000000073C2E000-0x0000000073C2F000-memory.dmp

Filesize
4KB

Download
memory/3636-35-0x0000000073C20000-0x00000000743D0000-memory.dmp

Filesize
7.7MB

Download
memory/3636-106-0x0000000073C2E000-0x0000000073C2F000-memory.dmp

Filesize
4KB

Download
memory/3636-109-0x0000000073C20000-0x00000000743D0000-memory.dmp

Filesize
7.7MB

Download
memory/3636-108-0x0000000073C20000-0x00000000743D0000-memory.dmp

Filesize
7.7MB

Download
memory/3832-105-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3832-110-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/3832-112-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads