neshta | 35bdc413a651b9fbfac9ad86a112c55a07f0fcfc3f698eb03f26154ad9b5ee1e

Analysis

max time kernel
43s
max time network
20s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-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 6 IoCs

resource	yara_rule
behavioral1/files/0x0001000000010314-11.dat	family_neshta
behavioral1/memory/2328-89-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/2328-92-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/2328-93-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/2328-94-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/2328-96-0x0000000000400000-0x000000000041B000-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

Executes dropped EXE 1 IoCs

pid	Process
2488	ZagreuS Decryptor.exe

Loads dropped DLL 2 IoCs

pid	Process
2328	ZagreuS Decryptor.exe
2328	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\Google\Update\1336~1.151\GO664E~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOF5E2~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.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~2\Adobe\READER~1.0\Reader\ACROBR~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\INFOPATH.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.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\Adobe\READER~1.0\SETUPF~1\{AC76B~1\Setup.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\Eula.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\OFFICE~1\ODeploy.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\setup_wm.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\LICLUA.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\SELFCERT.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\A3DUTI~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\OIS.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ONENOTE.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOBD5D~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WINDOW~4\ImagingDevices.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\AcroRd32.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\EQUATION\EQNEDT32.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.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\{CA675~1\VCREDI~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\PPTICO.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpshare.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\{EF6B0~1\VCREDI~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~4.EXE	ZagreuS Decryptor.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.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 4 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2488	2328	ZagreuS Decryptor.exe	29
PID 2328 wrote to memory of 2488	2328	ZagreuS Decryptor.exe	29
PID 2328 wrote to memory of 2488	2328	ZagreuS Decryptor.exe	29
PID 2328 wrote to memory of 2488	2328	ZagreuS Decryptor.exe	29

C:\Users\Admin\AppData\Local\Temp\ZagreuS Decryptor.exe
"C:\Users\Admin\AppData\Local\Temp\ZagreuS Decryptor.exe"
1⤵
- Loads dropped DLL
- 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:2328
- 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:2488

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

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:\MSOCache\ALLUSE~1\{90140~1\dwtrig20.exe

Filesize
547KB

MD5
cf6c595d3e5e9667667af096762fd9c4

SHA1
9bb44da8d7f6457099cb56e4f7d1026963dce7ce

SHA256
593e60cc30ae0789448547195af77f550387f6648d45847ea244dd0dd7abf03d

SHA512
ff4f789df9e6a6d0fbe12b3250f951fcf11e857906c65e96a30bb46266e7e1180d6103a03db2f3764e0d1346b2de7afba8259ba080057e4a268e45e8654dfa80

Download Submit
\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE

Filesize
252KB

MD5
9e2b9928c89a9d0da1d3e8f4bd96afa7

SHA1
ec66cda99f44b62470c6930e5afda061579cde35

SHA256
8899b4ed3446b7d55b54defbc1acb7c5392a4b3bc8ec2cdc7c31171708965043

SHA512
2ca5ad1d0e12a8049de885b90b7f56fe77c868e0d6dae4ec4b6f3bc0bf7b2e73295cc9b1328c2b45357ffb0d7804622ab3f91a56140b098e93b691032d508156

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

Filesize
360KB

MD5
9a34fd66797fd0f366cd47851eb8eaf0

SHA1
b86b2aeb688d3ff0b6f6066fb1ac71a3bb406ca2

SHA256
e2f0ec0293882487de6d2ec0795e92ad695588a7b0b9d2ba5173284bbe493ffd

SHA512
d7600f3a73af22917f067ce26f12dc13708652f4745a58cfea9433b2b2a0844087062c26b6e398de80004526fe36a918709c3eb57d7da888683161a9c7c862bd

Download Submit
memory/2328-89-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2328-96-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2328-94-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2328-93-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2328-92-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2488-13-0x0000000001380000-0x00000000013E2000-memory.dmp

Filesize
392KB

Download
memory/2488-90-0x000000007471E000-0x000000007471F000-memory.dmp

Filesize
4KB

Download
memory/2488-91-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/2488-47-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/2488-15-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/2488-14-0x0000000000410000-0x0000000000422000-memory.dmp

Filesize
72KB

Download
memory/2488-12-0x000000007471E000-0x000000007471F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads