Analysis
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max time kernel
38s -
max time network
33s -
platform
windows7_x64 -
resource
win7-20230220-en -
resource tags
arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system -
submitted
07-06-2023 01:35
Behavioral task
behavioral1
Sample
sample.exe
Resource
win7-20230220-en
Behavioral task
behavioral2
Sample
sample.exe
Resource
win10v2004-20230220-en
General
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Target
sample.exe
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Size
2.5MB
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MD5
2bbff2111232d73a93cd435300d0a07e
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SHA1
b93d633d379052f0a15b0f9c7094829461a86dbb
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SHA256
3160b4308dd9434ebb99e5747ec90d63722a640d329384b1ed536b59352dace6
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SHA512
566ebe109cc4550363a4336fb905b8009bd66a1389cc9cfcd79ffbbd59fe957b1f2cbcfb431b9d707e03f78133b802c8367b022421dff6eb71962c5b6d4ea402
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SSDEEP
49152:B+CUkw0e9xep5A4354qUoJo5DtjDgk9bcnfoEKSMBB90hMhlqTO4rpun4I:4CVG9y5ASUoJo5D5DgmbKfotB902QTOw
Malware Config
Extracted
C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\HOW TO RESTORE YOUR FILES.TXT
Signatures
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Detecting the common Go functions and variables names used by Snatch ransomware 6 IoCs
Processes:
resource yara_rule behavioral1/memory/2040-126-0x0000000000400000-0x00000000008C6000-memory.dmp family_snatch behavioral1/memory/2040-4059-0x0000000000400000-0x00000000008C6000-memory.dmp family_snatch behavioral1/memory/2040-7669-0x0000000000400000-0x00000000008C6000-memory.dmp family_snatch behavioral1/memory/2040-10492-0x0000000000400000-0x00000000008C6000-memory.dmp family_snatch behavioral1/memory/2040-15861-0x0000000000400000-0x00000000008C6000-memory.dmp family_snatch behavioral1/memory/2040-16806-0x0000000000400000-0x00000000008C6000-memory.dmp family_snatch -
Snatch Ransomware
Ransomware family generally distributed through RDP bruteforce attacks.
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Renames multiple (7775) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Modifies extensions of user files 14 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
sample.exedescription ioc process File opened for modification C:\Users\Admin\Pictures\FindResolve.png.gdjlosvtnib sample.exe File renamed C:\Users\Admin\Pictures\SaveInstall.tif => C:\Users\Admin\Pictures\SaveInstall.tif.gdjlosvtnib sample.exe File renamed C:\Users\Admin\Pictures\ResumeAssert.raw => C:\Users\Admin\Pictures\ResumeAssert.raw.gdjlosvtnib sample.exe File opened for modification C:\Users\Admin\Pictures\SkipProtect.png.gdjlosvtnib sample.exe File renamed C:\Users\Admin\Pictures\UnlockSelect.crw => C:\Users\Admin\Pictures\UnlockSelect.crw.gdjlosvtnib sample.exe File opened for modification C:\Users\Admin\Pictures\UnlockSelect.crw.gdjlosvtnib sample.exe File opened for modification C:\Users\Admin\Pictures\TestUnregister.png.gdjlosvtnib sample.exe File renamed C:\Users\Admin\Pictures\FindResolve.png => C:\Users\Admin\Pictures\FindResolve.png.gdjlosvtnib sample.exe File renamed C:\Users\Admin\Pictures\TestUnregister.png => C:\Users\Admin\Pictures\TestUnregister.png.gdjlosvtnib sample.exe File renamed C:\Users\Admin\Pictures\SkipProtect.png => C:\Users\Admin\Pictures\SkipProtect.png.gdjlosvtnib sample.exe File renamed C:\Users\Admin\Pictures\ExportReset.crw => C:\Users\Admin\Pictures\ExportReset.crw.gdjlosvtnib sample.exe File opened for modification C:\Users\Admin\Pictures\ExportReset.crw.gdjlosvtnib sample.exe File opened for modification C:\Users\Admin\Pictures\SaveInstall.tif.gdjlosvtnib sample.exe File opened for modification C:\Users\Admin\Pictures\ResumeAssert.raw.gdjlosvtnib sample.exe -
Drops startup file 1 IoCs
Processes:
sample.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HOW TO RESTORE YOUR FILES.TXT sample.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Processes:
resource yara_rule behavioral1/memory/2040-126-0x0000000000400000-0x00000000008C6000-memory.dmp upx behavioral1/memory/2040-4059-0x0000000000400000-0x00000000008C6000-memory.dmp upx behavioral1/memory/2040-7669-0x0000000000400000-0x00000000008C6000-memory.dmp upx behavioral1/memory/2040-10492-0x0000000000400000-0x00000000008C6000-memory.dmp upx behavioral1/memory/2040-15861-0x0000000000400000-0x00000000008C6000-memory.dmp upx behavioral1/memory/2040-16806-0x0000000000400000-0x00000000008C6000-memory.dmp upx -
Drops file in Program Files directory 64 IoCs
Processes:
sample.exedescription ioc process File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Bibliography\Sort\TITLE.XSL.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\OutlookAutoDiscover\PACBELL.NET.XML sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PAGESIZE\PGLBL012.XML sample.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\lv\LC_MESSAGES\vlc.mo sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\WB01240_.GIF.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\BDRTKFUL.POC.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0145904.JPG.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\BULLETS\BD21376_.GIF.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\EXCEL_COL.HXC.gdjlosvtnib sample.exe File created C:\Program Files\Java\jre7\lib\management\HOW TO RESTORE YOUR FILES.TXT sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\EN00902_.WMF.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0105320.WMF.gdjlosvtnib sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Europe\Dublin.gdjlosvtnib sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\modules\locale\com-sun-tools-visualvm-sampler_ja.jar sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\NA01356_.WMF sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\LINES\BD21311_.GIF sample.exe File opened for modification C:\Program Files\7-Zip\Lang\cs.txt.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0093905.WMF.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0341634.JPG.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\LINES\BD21448_.GIF sample.exe File opened for modification C:\Program Files\7-Zip\Lang\it.txt sample.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Resource\Linguistics\Providers\Proximity\11.00\engphon.env sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\DGAD.XML sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0107742.WMF.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBFTSCM\SCHEME14.CSS sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\update_tracking\com-sun-tools-visualvm-attach.xml sample.exe File opened for modification C:\Program Files\Google\Chrome\Application\106.0.5249.119\Locales\el.pak.gdjlosvtnib sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-core-output2_ja.jar sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\AG00139_.GIF sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Templates\1033\Pitchbook.potx sample.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\update_tracking\HOW TO RESTORE YOUR FILES.TXT sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\jre\lib\zi\Etc\GMT+8.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PAGESIZE\PGLBL093.XML sample.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\nb\LC_MESSAGES\vlc.mo.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\HH02155_.WMF.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Fonts\Verve.xml sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Templates\1033\Access\DataType\Phone.accft sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-netbeans-modules-sampler.xml sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\update_tracking\org-openide-nodes.xml sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\MP00132_.WMF.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\ADDINS\FAXEXT.ECF sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\Groove\Sounds\Places\WARN.WAV.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Stationery\1033\SEAMARBL.HTM sample.exe File opened for modification C:\Program Files\VideoLAN\VLC\locale\mn\LC_MESSAGES\vlc.mo sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\1033\PUBSPAPR\ZPDIR14F.GIF.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Adobe\Reader 9.0\Reader\Tracker\main.css sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\sa-jdi.jar.gdjlosvtnib sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\config\ModuleAutoDeps\org-netbeans-modules-options-api.xml sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\OutlookAutoDiscover\YAHOO.JP.XML sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\mscss7cm_fr.dub sample.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\com.jrockit.mc.feature.flightrecorder_5.5.0.165303\HOW TO RESTORE YOUR FILES.TXT sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\platform\modules\locale\org-netbeans-swing-plaf_ja.jar sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0195260.WMF sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\SL00712_.WMF sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\EXLIRMV.XML sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\db\lib\derbyLocale_cs.jar.gdjlosvtnib sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.feature_3.9.0.v20140827-1444\asl-v20.txt sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\CONVERT\OLAPPT.FAE.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\FORMCTL.POC.gdjlosvtnib sample.exe File created C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\profiler\config\HOW TO RESTORE YOUR FILES.TXT sample.exe File opened for modification C:\Program Files\Java\jdk1.7.0_80\lib\visualvm\visualvm\update_tracking\com-sun-tools-visualvm-modules-startup.xml sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\FD00586_.WMF sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\J0215718.WMF.gdjlosvtnib sample.exe File opened for modification C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\PE00608_.WMF sample.exe -
Launches sc.exe 1 IoCs
Sc.exe is a Windows utlilty to control services on the system.
Processes:
sc.exepid process 752 sc.exe -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 1924 vssadmin.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
vssvc.exedescription pid process Token: SeBackupPrivilege 284 vssvc.exe Token: SeRestorePrivilege 284 vssvc.exe Token: SeAuditPrivilege 284 vssvc.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
sample.execmd.execmd.exedescription pid process target process PID 2040 wrote to memory of 1048 2040 sample.exe cmd.exe PID 2040 wrote to memory of 1048 2040 sample.exe cmd.exe PID 2040 wrote to memory of 1048 2040 sample.exe cmd.exe PID 1048 wrote to memory of 752 1048 cmd.exe sc.exe PID 1048 wrote to memory of 752 1048 cmd.exe sc.exe PID 1048 wrote to memory of 752 1048 cmd.exe sc.exe PID 1048 wrote to memory of 796 1048 cmd.exe findstr.exe PID 1048 wrote to memory of 796 1048 cmd.exe findstr.exe PID 1048 wrote to memory of 796 1048 cmd.exe findstr.exe PID 2040 wrote to memory of 1952 2040 sample.exe cmd.exe PID 2040 wrote to memory of 1952 2040 sample.exe cmd.exe PID 2040 wrote to memory of 1952 2040 sample.exe cmd.exe PID 2040 wrote to memory of 764 2040 sample.exe cmd.exe PID 2040 wrote to memory of 764 2040 sample.exe cmd.exe PID 2040 wrote to memory of 764 2040 sample.exe cmd.exe PID 764 wrote to memory of 1924 764 cmd.exe vssadmin.exe PID 764 wrote to memory of 1924 764 cmd.exe vssadmin.exe PID 764 wrote to memory of 1924 764 cmd.exe vssadmin.exe PID 2040 wrote to memory of 1896 2040 sample.exe cmd.exe PID 2040 wrote to memory of 1896 2040 sample.exe cmd.exe PID 2040 wrote to memory of 1896 2040 sample.exe cmd.exe -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\sample.exe"C:\Users\Admin\AppData\Local\Temp\sample.exe"1⤵
- Modifies extensions of user files
- Drops startup file
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2040 -
C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\bmqdtewvblxkvtyjcpvm.bat2⤵
- Suspicious use of WriteProcessMemory
PID:1048 -
C:\Windows\system32\sc.exeSC QUERY3⤵
- Launches sc.exe
PID:752
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C:\Windows\system32\findstr.exeFINDSTR SERVICE_NAME3⤵PID:796
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\agqrpkhdbgeswfahimla.bat2⤵PID:1952
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\nbaajlkfe.bat2⤵
- Suspicious use of WriteProcessMemory
PID:764 -
C:\Windows\system32\vssadmin.exevssadmin delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1924
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\qklvoqgxvcjmijeb.bat2⤵PID:1896
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:284
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
758B
MD5362c51682bf01718f78792252759ea48
SHA1d2a7021fad7dc0551a9b19274d114fdebd0d24db
SHA2568104414020397799ae6c4f779a8486a8a5c2975f4a5cee250151ccfa9911f8ab
SHA512b6ed4e553e0d414cd83025d9c1a4170c8940744364f8662f5e86fbbe4d60c60471c5bd6d58fe28b9aec04b7d09ad9a688093c1632f22baa66cb0c1969a644154
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Filesize
47B
MD52202e846ba05d7f0bb20adbc5249c359
SHA14115d2d15614503456aea14db61d71a756cc7b8c
SHA2560965cb8ee38adedd9ba06bdad9220a35890c2df0e4c78d0559cd6da653bf740f
SHA512cd6ce6d89a8e5f75724405bc2694b706819c3c554b042075d5eb47fdb75653235160ac8a85e7425a49d98f25b3886faaaec5599bcf66d20bf6115dc3af4ba9c7
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Filesize
43B
MD555310bb774fff38cca265dbc70ad6705
SHA1cb8d76e9fd38a0b253056e5f204dab5441fe932b
SHA2561fbdb97893d09d59575c3ef95df3c929fe6b6ddf1b273283e4efadf94cdc802d
SHA51240e5a5e8454ca3eaac36d732550e2c5d869a235e3bbc4d31c4afa038fe4e06f782fa0885e876ad8119be766477fdcc12c1d5d04d53cf6b324e366b5351fc7cd4
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Filesize
43B
MD555310bb774fff38cca265dbc70ad6705
SHA1cb8d76e9fd38a0b253056e5f204dab5441fe932b
SHA2561fbdb97893d09d59575c3ef95df3c929fe6b6ddf1b273283e4efadf94cdc802d
SHA51240e5a5e8454ca3eaac36d732550e2c5d869a235e3bbc4d31c4afa038fe4e06f782fa0885e876ad8119be766477fdcc12c1d5d04d53cf6b324e366b5351fc7cd4
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Filesize
47B
MD52202e846ba05d7f0bb20adbc5249c359
SHA14115d2d15614503456aea14db61d71a756cc7b8c
SHA2560965cb8ee38adedd9ba06bdad9220a35890c2df0e4c78d0559cd6da653bf740f
SHA512cd6ce6d89a8e5f75724405bc2694b706819c3c554b042075d5eb47fdb75653235160ac8a85e7425a49d98f25b3886faaaec5599bcf66d20bf6115dc3af4ba9c7
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Filesize
43B
MD53b854ac9791ad8977b46f8b347eca1de
SHA16d0eb57be34e059a7275e227928d52400200dc72
SHA2564dd7521f4d8351fed8275553a0fa4713f65872a25011f4853713f6915abbbf09
SHA51224853c988df7274e10119cdbbc8816afaa20da661ac03286f9b47660126be8bf6eef40f40261c79b205308647ef42c87d1d840280fa12f7179b3eefef5e75030