Analysis
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max time kernel
175s -
max time network
186s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
28-11-2022 09:38
Static task
static1
Behavioral task
behavioral1
Sample
c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe
Resource
win10v2004-20221111-en
General
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Target
c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe
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Size
1.6MB
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MD5
30cd1f10f393ce0355ab0272e6fe40c0
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SHA1
ff02be22b87d48e1a9b5b3544fd249937c09665f
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SHA256
c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a
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SHA512
f43c54ee53310378d50e03b2a150ff3d06fabc8bd1993c63492f96026dfde6ed18b03c2f771b63dd57f9384d04fd72594fd0276c812b2e989d6f7a0f2525e457
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SSDEEP
24576:Ftb20pkaCqT5TBWgNQ7aW5MB6dDVPHbZdR17P3e8W0A6A:2Vg5tQ7aW5RdVdpPu845
Malware Config
Signatures
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Detect Neshta payload 2 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\system.exe family_neshta C:\Users\Admin\AppData\Local\Temp\system.exe family_neshta -
Modifies system executable filetype association 2 TTPs 1 IoCs
Processes:
system.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" system.exe -
Neshta
Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.
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Executes dropped EXE 3 IoCs
Processes:
system.exenjRAT v0.7d.exesystem.exepid process 3136 system.exe 2704 njRAT v0.7d.exe 3140 system.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
system.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation system.exe -
Drops startup file 2 IoCs
Processes:
c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.exe c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\system.exe c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe -
Drops file in Program Files directory 48 IoCs
Processes:
system.exedescription ioc process File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\PWAHEL~1.EXE system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROBR~1.EXE system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\WOW_HE~1.EXE system.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\ADOBEA~1.EXE system.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~2.EXE system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\32BITM~1.EXE system.exe File opened for modification C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jucheck.exe system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\COOKIE~1.EXE system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\NOTIFI~1.EXE system.exe File opened for modification C:\PROGRA~2\INTERN~1\iexplore.exe system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\INSTAL~1\setup.exe system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\Eula.exe system.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~4.EXE system.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~1.EXE system.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOF5E2~1.EXE system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\MSEDGE~1.EXE system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADOBEC~1.EXE system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\FULLTR~1.EXE system.exe File opened for modification C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jaureg.exe system.exe File opened for modification C:\PROGRA~2\INTERN~1\ielowutil.exe system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\msedge.exe system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\PWAHEL~1.EXE system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\arh.exe system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\plug_ins\PI_BRO~1\64BITM~1.EXE system.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\VSTO\10.0\VSTOIN~1.EXE system.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOBD5D~1.EXE system.exe File opened for modification C:\PROGRA~2\INTERN~1\ExtExport.exe system.exe File opened for modification C:\PROGRA~2\Google\Update\DISABL~1.EXE system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\BHO\IE_TO_~1.EXE system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroRd32.exe system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\ADelRCP.exe system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\LOGTRA~1.EXE system.exe File opened for modification C:\PROGRA~2\COMMON~1\MICROS~1\MSInfo\msinfo32.exe system.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GOOGLE~3.EXE system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~2.EXE system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\Browser\WCCHRO~1\WCCHRO~1.EXE system.exe File opened for modification C:\PROGRA~2\COMMON~1\Adobe\ARM\1.0\AdobeARM.exe system.exe File opened for modification C:\PROGRA~2\COMMON~1\Java\JAVAUP~1\jusched.exe system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\IDENTI~1.EXE system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\msedge.exe system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~1.EXE system.exe File opened for modification C:\PROGRA~2\Adobe\ACROBA~1\Reader\READER~1.EXE system.exe File opened for modification C:\PROGRA~2\Google\Update\1336~1.71\GO664E~1.EXE system.exe File opened for modification C:\PROGRA~2\INTERN~1\ieinstal.exe system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\ELEVAT~1.EXE system.exe File opened for modification C:\PROGRA~2\MICROS~1\Edge\APPLIC~1\920902~1.67\MSEDGE~3.EXE system.exe -
Drops file in Windows directory 1 IoCs
Processes:
system.exedescription ioc process File opened for modification C:\Windows\svchost.com system.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies registry class 1 IoCs
Processes:
system.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\Windows\\svchost.com \"%1\" %*" system.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exesystem.exedescription pid process target process PID 1552 wrote to memory of 3136 1552 c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe system.exe PID 1552 wrote to memory of 3136 1552 c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe system.exe PID 1552 wrote to memory of 3136 1552 c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe system.exe PID 1552 wrote to memory of 2704 1552 c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe njRAT v0.7d.exe PID 1552 wrote to memory of 2704 1552 c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe njRAT v0.7d.exe PID 3136 wrote to memory of 3140 3136 system.exe system.exe PID 3136 wrote to memory of 3140 3136 system.exe system.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe"C:\Users\Admin\AppData\Local\Temp\c767020810b099c4ebb24220ab9a317b658a2f2a26be762d02a95a2efb7fc63a.exe"1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1552 -
C:\Users\Admin\AppData\Local\Temp\system.exeC:\Users\Admin\AppData\Local\Temp/system.exe2⤵
- 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:3136 -
C:\Users\Admin\AppData\Local\Temp\3582-490\system.exe"C:\Users\Admin\AppData\Local\Temp\3582-490\system.exe"3⤵
- Executes dropped EXE
PID:3140 -
C:\Users\Admin\AppData\Local\Temp\njRAT v0.7d.exe"C:\Users\Admin\AppData\Local\Temp/njRAT v0.7d.exe"2⤵
- Executes dropped EXE
PID:2704
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Local\Temp\3582-490\system.exeFilesize
145KB
MD516a83869f3a5decb6f2308581d545602
SHA16601f4ec55351bded6fdd1986385e14e225bb2f8
SHA256119a4e5167bd258dde45bd54bf7426886503e6e149549247aba2e357e380ac6b
SHA512f7e03983e4567e94cec21bbb31a81fca645ed3cbef13b509a90ad011d56d2d22c79a05ce96dba392cdde068216628315ac2b8801e56c440eb35b3fa19102565a
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C:\Users\Admin\AppData\Local\Temp\3582-490\system.exeFilesize
145KB
MD516a83869f3a5decb6f2308581d545602
SHA16601f4ec55351bded6fdd1986385e14e225bb2f8
SHA256119a4e5167bd258dde45bd54bf7426886503e6e149549247aba2e357e380ac6b
SHA512f7e03983e4567e94cec21bbb31a81fca645ed3cbef13b509a90ad011d56d2d22c79a05ce96dba392cdde068216628315ac2b8801e56c440eb35b3fa19102565a
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C:\Users\Admin\AppData\Local\Temp\njRAT v0.7d.exeFilesize
1.7MB
MD527029ca1545784ce16194273a1c69566
SHA14e5f81db9fd9d98a3694319c62c3ff6afcd4b2d1
SHA256753a2b83b5f1a5ed8e46d0ec674f7e55d098669200ef2c57a1bfd748341cb485
SHA512986f83ec5eb743310a949a134dbcdc6b5ee37de9e7eedb99bb6783b9ba96511cd2b7ae7f41420f7c81ef3f0dc76ecf54e6cc39c8532c8dec39e41544a2de8c97
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C:\Users\Admin\AppData\Local\Temp\njRAT v0.7d.exeFilesize
1.7MB
MD527029ca1545784ce16194273a1c69566
SHA14e5f81db9fd9d98a3694319c62c3ff6afcd4b2d1
SHA256753a2b83b5f1a5ed8e46d0ec674f7e55d098669200ef2c57a1bfd748341cb485
SHA512986f83ec5eb743310a949a134dbcdc6b5ee37de9e7eedb99bb6783b9ba96511cd2b7ae7f41420f7c81ef3f0dc76ecf54e6cc39c8532c8dec39e41544a2de8c97
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C:\Users\Admin\AppData\Local\Temp\system.exeFilesize
185KB
MD5a82796f4ff9d86989f4075a626c0ac42
SHA1e918915b1625998b230db18736be6a5a10936b0c
SHA256875a119fc622ec4d90607e86198a98a67c31547be7d0f717165c96a20ea3d62b
SHA5125425430a1b14386af65330855f7a71bdd676a5d6b2be941051155804b3e1e88ba2fd13b68ec288a1389f95509504cf392248f88e09b481c0ac16437b0dfaea98
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C:\Users\Admin\AppData\Local\Temp\system.exeFilesize
185KB
MD5a82796f4ff9d86989f4075a626c0ac42
SHA1e918915b1625998b230db18736be6a5a10936b0c
SHA256875a119fc622ec4d90607e86198a98a67c31547be7d0f717165c96a20ea3d62b
SHA5125425430a1b14386af65330855f7a71bdd676a5d6b2be941051155804b3e1e88ba2fd13b68ec288a1389f95509504cf392248f88e09b481c0ac16437b0dfaea98
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memory/2704-135-0x0000000000000000-mapping.dmp
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memory/2704-142-0x00007FF8511D0000-0x00007FF851C06000-memory.dmpFilesize
10.2MB
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memory/2704-143-0x0000000000EF7000-0x0000000000EFF000-memory.dmpFilesize
32KB
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memory/2704-144-0x0000000000EF7000-0x0000000000EFF000-memory.dmpFilesize
32KB
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memory/3136-132-0x0000000000000000-mapping.dmp
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memory/3140-138-0x0000000000000000-mapping.dmp
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memory/3140-141-0x00007FF8511D0000-0x00007FF851C06000-memory.dmpFilesize
10.2MB