snatch | 5d81030fa79538850bef6375df9bdaebffd251271a04b984d356de49ac208bfb

Analysis

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

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General

Target

sample.exe
Size

2.5MB
MD5

2bbff2111232d73a93cd435300d0a07e
SHA1

b93d633d379052f0a15b0f9c7094829461a86dbb
SHA256

3160b4308dd9434ebb99e5747ec90d63722a640d329384b1ed536b59352dace6
SHA512

566ebe109cc4550363a4336fb905b8009bd66a1389cc9cfcd79ffbbd59fe957b1f2cbcfb431b9d707e03f78133b802c8367b022421dff6eb71962c5b6d4ea402
SSDEEP

49152:B+CUkw0e9xep5A4354qUoJo5DtjDgk9bcnfoEKSMBB90hMhlqTO4rpun4I:4CVG9y5ASUoJo5D5DgmbKfotB902QTOw

Score

10^/10

snatch ransomware spyware stealer upx

Malware Config

Extracted

Path

C:\MSOCache\All Users\{90140000-001A-0409-0000-0000000FF1CE}-C\HOW TO RESTORE YOUR FILES.TXT

Ransom Note

Hello! All your files are encrypted and only we can decrypt them. Contact us: [email protected] or [email protected] Write us if you want to return your files - we can do it very quickly! The header of letter must contain extension of encrypted files. We always reply within 24 hours. If not - check spam folder, resend your letter or try send letter from another email service (like protonmail.com). Attention! Do not rename or edit encrypted files: you may have permanent data loss. To prove that we can recover your files, we am ready to decrypt any three files (less than 1Mb) for free (except databases, Excel and backups). HURRY UP! If you do not email us in the next 48 hours then your data may be lost permanently.

Emails

[email protected]

Signatures

Detecting the common Go functions and variables names used by Snatch ransomware 6 IoCs

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.
ransomware snatch
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490
Renames multiple (7775) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Modifies extensions of user files 14 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	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

description	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.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

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

description	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.

pid	Process
752	sc.exe

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1924	vssadmin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	284	vssvc.exe
Token: SeRestorePrivilege	284	vssvc.exe
Token: SeAuditPrivilege	284	vssvc.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 1048	2040	sample.exe	28
PID 2040 wrote to memory of 1048	2040	sample.exe	28
PID 2040 wrote to memory of 1048	2040	sample.exe	28
PID 1048 wrote to memory of 752	1048	cmd.exe	30
PID 1048 wrote to memory of 752	1048	cmd.exe	30
PID 1048 wrote to memory of 752	1048	cmd.exe	30
PID 1048 wrote to memory of 796	1048	cmd.exe	31
PID 1048 wrote to memory of 796	1048	cmd.exe	31
PID 1048 wrote to memory of 796	1048	cmd.exe	31
PID 2040 wrote to memory of 1952	2040	sample.exe	32
PID 2040 wrote to memory of 1952	2040	sample.exe	32
PID 2040 wrote to memory of 1952	2040	sample.exe	32
PID 2040 wrote to memory of 764	2040	sample.exe	35
PID 2040 wrote to memory of 764	2040	sample.exe	35
PID 2040 wrote to memory of 764	2040	sample.exe	35
PID 764 wrote to memory of 1924	764	cmd.exe	37
PID 764 wrote to memory of 1924	764	cmd.exe	37
PID 764 wrote to memory of 1924	764	cmd.exe	37
PID 2040 wrote to memory of 1896	2040	sample.exe	41
PID 2040 wrote to memory of 1896	2040	sample.exe	41
PID 2040 wrote to memory of 1896	2040	sample.exe	41

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

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.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\bmqdtewvblxkvtyjcpvm.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1048
- - C:\Windows\system32\sc.exe
    SC QUERY
    3⤵
    - Launches sc.exe
    PID:752
- - C:\Windows\system32\findstr.exe
    FINDSTR SERVICE_NAME
    3⤵
    PID:796
- C:\Windows\system32\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\agqrpkhdbgeswfahimla.bat
  2⤵
  PID:1952
- C:\Windows\system32\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\nbaajlkfe.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:764
- - C:\Windows\system32\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1924
- C:\Windows\system32\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\qklvoqgxvcjmijeb.bat
  2⤵
  PID:1896

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:284

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact