neshta | 50e759e171bb68187c565ada9ef879759db87a3aa6103c03a574579af161ce17

Analysis

max time kernel
130s
max time network
33s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
14/06/2023, 12:39

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General

Target

Tiger Stock2.exe
Size

3.8MB
MD5

4ee95f2bc0f313c7f9ad22cba0e5a099
SHA1

76c816d183eaf9bf32f3233a51334903cde9464c
SHA256

50e759e171bb68187c565ada9ef879759db87a3aa6103c03a574579af161ce17
SHA512

37e25dd932a3a4a2fa303665a50e87e4452c8f447bc0c121cefad99e97e8a0135ae60773f8a318f3e87cdab17bd3ec45645f6fe789a4e9cde0a50dc8a575e029
SSDEEP

49152:xLkgxDur1/hv2Lfe9YMJM4YKMgghfz3tl7nvxgmr:xPDur1/gwJM41Turz

Score

10^/10

neshta persistence spyware stealer

Malware Config

Signatures

Detect Neshta payload 6 IoCs

resource	yara_rule
behavioral1/files/0x0001000000010320-64.dat	family_neshta
behavioral1/memory/932-143-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/932-144-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/932-145-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/932-146-0x0000000000400000-0x000000000041B000-memory.dmp	family_neshta
behavioral1/memory/932-148-0x0000000000400000-0x000000000041B000-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

Executes dropped EXE 1 IoCs

pid	Process
1868	Tiger Stock2.exe

Loads dropped DLL 5 IoCs

pid	Process
932	Tiger Stock2.exe
476	dw20.exe
476	dw20.exe
476	dw20.exe
932	Tiger Stock2.exe

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\" %*"	Tiger Stock2.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\PROGRA~3\PACKAG~1\{33D1F~1\VCREDI~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\ADOBEC~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\ACCICONS.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CLVIEW.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\misc.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOHTMED.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORDB.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmplayer.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{57A73~1\VC_RED~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBEU~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\NAMECO~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wab.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\Oarpmany.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ieinstal.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSTORE.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\POWERPNT.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WINWORD.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOXMLED.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GROOVEMN.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\WINDOW~1\wabmig.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\FLTLDR.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\OFFICE14\MSOICONS.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~2.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\VPREVIEW.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\ADOBEA~1\Versions\1.0\ADOBEA~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\INTERN~1\ielowutil.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\CNFNOT32.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOSYNC.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\UNINST~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmlaunch.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmprph.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\WMPDMC.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\WINDOW~2\ACCESS~1\wordpad.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\WI4223~1\sidebar.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\Adobe\Updater6\ADOBE_~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\DW\DW20.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~3.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GO664E~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOBD5D~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\1033\ONELEV.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MOZILL~1\MAINTE~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{61087~1\VCREDI~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Resource\Icons\SC_REA~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\IECONT~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{EF6B0~1\VCREDI~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\Adobe\READER~1.0\Reader\LOGTRA~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~4.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOF5E2~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSQRY32.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\WORDICON.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\SOURCE~1\OSE.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\TextConv\WksConv\Wkconv.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\BCSSync.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\PPTICO.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\SELFCERT.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~3\PACKAG~1\{4D8DC~1\VC_RED~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\ink\mip.exe	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\Google\Update\1336~1.151\GOOGLE~1.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\GRAPH.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\MSOUC.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\MICROS~1\Office14\XLICONS.EXE	Tiger Stock2.exe
File opened for modification	C:\PROGRA~2\WI54FB~1\wmpconfig.exe	Tiger Stock2.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\svchost.com	Tiger Stock2.exe

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

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\" %*"	Tiger Stock2.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
476	dw20.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 932 wrote to memory of 1868	932	Tiger Stock2.exe	27
PID 932 wrote to memory of 1868	932	Tiger Stock2.exe	27
PID 932 wrote to memory of 1868	932	Tiger Stock2.exe	27
PID 932 wrote to memory of 1868	932	Tiger Stock2.exe	27
PID 1868 wrote to memory of 476	1868	Tiger Stock2.exe	28
PID 1868 wrote to memory of 476	1868	Tiger Stock2.exe	28
PID 1868 wrote to memory of 476	1868	Tiger Stock2.exe	28
PID 1868 wrote to memory of 476	1868	Tiger Stock2.exe	28

C:\Users\Admin\AppData\Local\Temp\Tiger Stock2.exe
"C:\Users\Admin\AppData\Local\Temp\Tiger Stock2.exe"
1⤵
- Loads dropped DLL
- Modifies system executable filetype association
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:932
- C:\Users\Admin\AppData\Local\Temp\3582-490\Tiger Stock2.exe
  "C:\Users\Admin\AppData\Local\Temp\3582-490\Tiger Stock2.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1868
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
    dw20.exe -x -s 440
    3⤵
    - Loads dropped DLL
    - Suspicious behavior: GetForegroundWindowSpam
    PID:476

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Change Default File Association

T1042

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

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
C:\Users\Admin\AppData\Local\Temp\3582-490\Tiger Stock2.exe

Filesize
3.8MB

MD5
a73b1f614ab4d1900868c64438fa9166

SHA1
c1f0f48615ec9827cee6c6b94689bfd7a8b58622

SHA256
0a9839dcc3bcb331d4a56c536a085dc27823c9631f53395d7caa6522ef007dcf

SHA512
802a551eecfcba9e957a63b15956eb3f1fdba322f97786dba6ffdf561560751ebbd89421ab59c6015fbc55e44b8dd0f13661947d56914115932262883a1130ce

Download Submit
C:\Users\Admin\AppData\Local\Temp\3582-490\Tiger Stock2.exe

Filesize
3.8MB

MD5
a73b1f614ab4d1900868c64438fa9166

SHA1
c1f0f48615ec9827cee6c6b94689bfd7a8b58622

SHA256
0a9839dcc3bcb331d4a56c536a085dc27823c9631f53395d7caa6522ef007dcf

SHA512
802a551eecfcba9e957a63b15956eb3f1fdba322f97786dba6ffdf561560751ebbd89421ab59c6015fbc55e44b8dd0f13661947d56914115932262883a1130ce

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\Tiger Stock2.exe

Filesize
3.8MB

MD5
a73b1f614ab4d1900868c64438fa9166

SHA1
c1f0f48615ec9827cee6c6b94689bfd7a8b58622

SHA256
0a9839dcc3bcb331d4a56c536a085dc27823c9631f53395d7caa6522ef007dcf

SHA512
802a551eecfcba9e957a63b15956eb3f1fdba322f97786dba6ffdf561560751ebbd89421ab59c6015fbc55e44b8dd0f13661947d56914115932262883a1130ce

Download Submit
\Users\Admin\AppData\Local\Temp\3582-490\Tiger Stock2.exe

Filesize
3.8MB

MD5
a73b1f614ab4d1900868c64438fa9166

SHA1
c1f0f48615ec9827cee6c6b94689bfd7a8b58622

SHA256
0a9839dcc3bcb331d4a56c536a085dc27823c9631f53395d7caa6522ef007dcf

SHA512
802a551eecfcba9e957a63b15956eb3f1fdba322f97786dba6ffdf561560751ebbd89421ab59c6015fbc55e44b8dd0f13661947d56914115932262883a1130ce

Download Submit
\Users\Admin\AppData\Local\Temp\3582-490\Tiger Stock2.exe

Filesize
3.8MB

MD5
a73b1f614ab4d1900868c64438fa9166

SHA1
c1f0f48615ec9827cee6c6b94689bfd7a8b58622

SHA256
0a9839dcc3bcb331d4a56c536a085dc27823c9631f53395d7caa6522ef007dcf

SHA512
802a551eecfcba9e957a63b15956eb3f1fdba322f97786dba6ffdf561560751ebbd89421ab59c6015fbc55e44b8dd0f13661947d56914115932262883a1130ce

Download Submit
\Users\Admin\AppData\Local\Temp\3582-490\Tiger Stock2.exe

Filesize
3.8MB

MD5
a73b1f614ab4d1900868c64438fa9166

SHA1
c1f0f48615ec9827cee6c6b94689bfd7a8b58622

SHA256
0a9839dcc3bcb331d4a56c536a085dc27823c9631f53395d7caa6522ef007dcf

SHA512
802a551eecfcba9e957a63b15956eb3f1fdba322f97786dba6ffdf561560751ebbd89421ab59c6015fbc55e44b8dd0f13661947d56914115932262883a1130ce

Download Submit
memory/476-101-0x0000000002480000-0x0000000002481000-memory.dmp

Filesize
4KB

Download
memory/932-143-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/932-144-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/932-145-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/932-146-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/932-148-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/1868-68-0x0000000000BD0000-0x0000000000C10000-memory.dmp

Filesize
256KB

Download