renamer | 55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94

Analysis

max time kernel
140s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-10-2024 21:09

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General

Target

55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
Size

824KB
MD5

4dd80bfb7e951cf3f1f828f2da645335
SHA1

70ac16ef6dbd68940681b41fe042d3123794abb6
SHA256

55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94
SHA512

7eef379db433fe8609ef067e40f2bce20e7034a75868f8c9d3fe56eab74d4096a7be1d768d759de27e5fa29184fcc223a4fc25d4c566f583757fb47fc8613dfd
SSDEEP

12288:3wCBtLC+EptUpQ9SeSChq3YvxFBSSRMT8PTp4ihozE5888888888888W8888888J:jNzCtUpQ9WWPBSSRMTEpXNp

Score

10^/10

renamer discovery worm

Malware Config

Signatures

Detects Renamer worm. 2 IoCs

Renamer aka Grename is worm written in Delphi.

resource	yara_rule
behavioral2/files/0x000c000000023b98-6.dat	family_renamer
behavioral2/memory/1512-267-0x0000000000400000-0x00000000004DB000-memory.dmp	family_renamer

Renamer, Grenam
Renamer aka Grenam is a worm written in Delphi.
worm renamer

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Paint.lnk	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe

Drops autorun.inf file 1 TTPs 2 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File opened for modification	C:\autorun.inf	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	F:\autorun.inf	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\7-Zip\RCX7186.tmp	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\MSInfo\it-IT\msinfo32.exe.mui	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\vjavap.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-000F-0000-1000-0000000FF1CE}\RCX7417.tmp	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\en-US\InputPersonalization.exe.mui	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\chrome.exe.sig	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\vjar.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\EQUATION\veqnedt32.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Mozilla Firefox\crashreporter.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Common Files\microsoft shared\Source Engine\OSE.EXE	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jar.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\java.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\vjavadoc.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\vjavafxpackager.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\vFLTLDR.EXE	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\InspectorOfficeGadget.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\dotnet\vdotnet.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Windows Defender\es-ES\OfflineScannerShell.exe.mui	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\7-Zip\v7zFM.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\7-Zip\v7zG.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\fr-FR\TabTip.exe.mui	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Internet Explorer\iexplore.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\jarsigner.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javah.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Windows Defender\it-IT\OfflineScannerShell.exe.mui	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\vMavInject32.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\Installer\chrmstp.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Internet Explorer\es-ES\iexplore.exe.mui	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\vjava-rmi.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\javac.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Analysis Services\AS OLEDB\140\SQLDumper.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Mozilla Firefox\crashreporter.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Windows NT\Accessories\wordpad.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Mozilla Firefox\RCX74E8.tmp	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\vInspectorOfficeGadget.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\chrome_pwa_launcher.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Google\Chrome\Application\123.0.6312.123\vchrome_pwa_launcher.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Internet Explorer\ExtExport.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Java\jdk-1.8\bin\vjava-rmi.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Java\jdk-1.8\bin\vjavaw.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-001F-0409-1000-0000000FF1CE}\vmisc.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\VideoLAN\VLC\RCX7508.tmp	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\VideoLAN\VLC\vuninstall.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\vchrome.exe.sig	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Internet Explorer\it-IT\iexplore.exe.mui	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\vjavapackager.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\vjavaws.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\vAppVDllSurrogate32.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-000F-0000-1000-0000000FF1CE}\vaccicons.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Mozilla Firefox\vcrashreporter.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Common Files\microsoft shared\ClickToRun\vappvcleaner.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Java\jdk-1.8\bin\vjava.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\EQUATION\eqnedt32.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\7-Zip\vUninstall.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ink\it-IT\ShapeCollector.exe.mui	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Java\jdk-1.8\bin\appletviewer.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Java\jdk-1.8\bin\jhat.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\velevation_service.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Google\Chrome\Application\123.0.6312.123\vnotification_helper.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Microsoft Office\Office16\vOSPPREARM.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\RCX73C8.tmp	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesX86\Microsoft Office\Office16\vAppSharingHookController.ico	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-001F-040C-1000-0000000FF1CE}\misc.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
File created	C:\Program Files\dotnet\shared\Microsoft.NETCore.App\8.0.2\createdump.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\bfsvc.exe	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe

C:\Users\Admin\AppData\Local\Temp\55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe
"C:\Users\Admin\AppData\Local\Temp\55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94.exe"
1⤵
- Drops startup file
- Drops autorun.inf file
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:1512

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Program Files\7-Zip\7z.exe

Filesize
824KB

MD5
4dd80bfb7e951cf3f1f828f2da645335

SHA1
70ac16ef6dbd68940681b41fe042d3123794abb6

SHA256
55fd5b56360ebe550e2886062c8efeea22d4035b27700c76a2223bb38665ff94

SHA512
7eef379db433fe8609ef067e40f2bce20e7034a75868f8c9d3fe56eab74d4096a7be1d768d759de27e5fa29184fcc223a4fc25d4c566f583757fb47fc8613dfd

Download Submit
C:\Program Files\Java\jdk-1.8\bin\vjavaws.ico

Filesize
4KB

MD5
38b41d03e9dfcbbd08210c5f0b50ba71

SHA1
2fbfde75ce9fe8423d8e7720bf7408cedcb57a70

SHA256
611f2cb2e03bd8dbcb584cd0a1c48accfba072dd3fc4e6d3144e2062553637f5

SHA512
ec97556b6ff6023d9e6302ba586ef27b1b54fbf7e8ac04ff318aa4694f13ad343049210ef17b7b603963984c1340589665d67d9c65fec0f91053ff43b1401ba9

Download Submit
C:\Program Files\Microsoft Office 15\ClientX64\vIntegratedOffice.ico

Filesize
4KB

MD5
3ea9bcbc01e1a652de5a6fc291a66d1a

SHA1
aee490d53ee201879dff37503a0796c77642a792

SHA256
a058bfd185fe714927e15642004866449bce425d34292a08af56d66cf03ebe6c

SHA512
7c740132f026341770b6a20575786da581d8a31850d0d680978a00cc4dfca1e848ef9cdc32e51bae680ea13f6cc0d7324c38765cb4e26dcb2e423aced7da0501

Download Submit
C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-001F-0C0A-1000-0000000FF1CE}\vmisc.ico

Filesize
4KB

MD5
fc27f73816c9f640d800cdc1c9294751

SHA1
e6c3d8835d1de4e9606e5588e741cd1be27398f6

SHA256
3cc5043caa157e5f9b1870527b8c323850bdae1e58d6760e4e895d2ab8a35a05

SHA512
9e36b96acc97bc7cd45e67a47f1ae7ab7d3818cc2fdaad147524ce9e4baedfaac9cd012923ec65db763bfd850c65b497376bb0694508bee59747f97bf1591fd4

Download Submit
F:\autorun.inf

Filesize
102B

MD5
5513829683bff23161ca7d8595c25c72

SHA1
9961b65bbd3bac109dddd3a161fc30650e8a7096

SHA256
94e323bd9071db7369ade16f45454e7a0dbfb6a39efddc1234c4719d1f7ee4c2

SHA512
308c84446106cda0a71e37b0de46aaf4b7361f9ddcc3c4c29f8e87da8acb606525dce8a42caf9d74e708c56b31c524f9535a2f5f4757c6c357401da1c495ddb6

Download Submit
memory/1512-0-0x0000000002290000-0x0000000002291000-memory.dmp

Filesize
4KB

Download
memory/1512-268-0x0000000002290000-0x0000000002291000-memory.dmp

Filesize
4KB

Download
memory/1512-267-0x0000000000400000-0x00000000004DB000-memory.dmp

Filesize
876KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads