9cdd65c79921a2dd62616ab5b94dcd7123d13038fc097627f91162e4d9a3db5c

Analysis

max time kernel
151s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
20/10/2022, 13:18 UTC

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General

Target

9cdd65c79921a2dd62616ab5b94dcd7123d13038fc097627f91162e4d9a3db5c.dll
Size

667KB
MD5

a086e03be718ed752d880d21ab9cdb50
SHA1

3d720f928d9791696365bfc19d0bdc4ca371c55e
SHA256

9cdd65c79921a2dd62616ab5b94dcd7123d13038fc097627f91162e4d9a3db5c
SHA512

1c73e1170f2c438cf18fdcf586b4bde3afaf98c013554000f33ca0e7e276aa3c3b521b281a012fe4848dbe5902bb512c2c6ae5ad8d16c929c810155c82e95ee5
SSDEEP

12288:bzb9rMfc+CKUQyUmjtc4euuzPrs9pGp8hunWoopooK9kwP:bzb1MlCKUQyUmjtczu6Prs9pgWoopoo6

Score

8^/10

upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1464	rundll32Srv.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0003000000022dd6-134.dat	upx
behavioral2/files/0x0003000000022dd6-135.dat	upx
behavioral2/memory/1464-137-0x0000000000400000-0x000000000040A000-memory.dmp	upx
behavioral2/memory/1464-138-0x0000000000400000-0x000000000040A000-memory.dmp	upx

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll32Srv.exe	rundll32.exe

Drops file in Program Files directory 64 IoCs

description	ioc	Process
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\EQUATION\api-ms-win-crt-conio-l1-1-0.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.cs-cz.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Common Files\System\Ole DB\oledb32r.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.AnalysisServices.Common.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\rmid.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\rmid.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.core.feature_1.1.0.v20140827-1444\license.html	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\java_crw_demo.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\protocolhandler.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSO.FRAMEPROTOCOLWIN32.DLL	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\OsfTaskengine.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\PROOF\msgr3jp.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\jsadebugd.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\jp2launcher.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.Data.OData.NetFX35.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\EQUATION\1033\EEINTL.DLL	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\plugin2\msvcr100.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Localytics.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\PowerPivot Excel Add-in\Microsoft.Office.PowerPivot.ExcelAddIn.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\kinit.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\IEAWSDC.DLL	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSYUBIN7.DLL	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\OWSSUPP.DLL	rundll32Srv.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-private-l1-1-0.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Internet Explorer\ExtExport.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\javap.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\msvcr120.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Microsoft.OData.Edm.NetFX35.V7.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\JitV.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\C2RINTL.pl-pl.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Internet Explorer\iexplore.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\GKWord.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\jsoundds.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\api-ms-win-crt-heap-l1-1-0.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Templates\1033\GettingStarted16\SLINTL.DLL	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\fxplugins.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\keytool.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-crt-string-l1-1-0.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\db\README-JDK.html	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\javaws.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\C2R64.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\splashscreen.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.core.feature_1.1.0.v20140827-1444\epl-v10.html	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\instrument.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\bci.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ADDINS\Microsoft Power Query for Excel Integrated\bin\Office.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\SELFCERT.EXE	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-crt-process-l1-1-0.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\prism_common.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\ChakraCore.Debugger.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Common Files\microsoft shared\ClickToRun\api-ms-win-core-file-l1-2-0.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\servertool.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\wsimport.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.ssl.feature_1.0.0.v20140827-1444\epl-v10.html	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\vccorlib140.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\EQUATION\api-ms-win-core-timezone-l1-1-0.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\jre\bin\jfr.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Client\vcruntime140.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\MSOSPECTRE.DLL	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\api-ms-win-core-synch-l1-2-0.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\Office16\msvcp120.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\EQUATION\api-ms-win-crt-stdio-l1-1-0.dll	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\orbd.exe	rundll32Srv.exe
File opened for modification	C:\Program Files\Java\jdk1.8.0_66\bin\tnameserv.exe	rundll32Srv.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 648 wrote to memory of 4796	648	rundll32.exe	82
PID 648 wrote to memory of 4796	648	rundll32.exe	82
PID 648 wrote to memory of 4796	648	rundll32.exe	82
PID 4796 wrote to memory of 1464	4796	rundll32.exe	84
PID 4796 wrote to memory of 1464	4796	rundll32.exe	84
PID 4796 wrote to memory of 1464	4796	rundll32.exe	84

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\9cdd65c79921a2dd62616ab5b94dcd7123d13038fc097627f91162e4d9a3db5c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:648
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\9cdd65c79921a2dd62616ab5b94dcd7123d13038fc097627f91162e4d9a3db5c.dll,#1
  2⤵
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4796
- - C:\Windows\SysWOW64\rundll32Srv.exe
    C:\Windows\SysWOW64\rundll32Srv.exe
    3⤵
    - Executes dropped EXE
    - Drops file in Program Files directory
    PID:1464

Network

DNS

rmnzerobased.com

rundll32Srv.exe

Remote address:

8.8.8.8:53

Request

rmnzerobased.com

IN A

Response
DNS

rmnzerobased.com

rundll32Srv.exe

Remote address:

8.8.8.8:53

Request

rmnzerobased.com

IN A

Response
DNS

rmnzerobased.com

rundll32Srv.exe

Remote address:

8.8.8.8:53

Request

rmnzerobased.com

IN A

Response
DNS

rmnzerobased.com

rundll32Srv.exe

Remote address:

8.8.8.8:53

Request

rmnzerobased.com

IN A

Response
DNS

rmnzerobased.com

rundll32Srv.exe

Remote address:

8.8.8.8:53

Request

rmnzerobased.com

IN A

Response

8.8.8.8:443

tls

46 B
169 B
1
1
8.8.8.8:443

tls

46 B
169 B
1
1
104.80.229.204:443

322 B
7
8.8.8.8:443

tls

46 B
113 B
1
1
51.104.15.252:443

322 B
7
87.248.202.1:80

322 B
7
87.248.202.1:80

322 B
7
67.24.33.254:80

322 B
7
67.26.105.254:80

46 B
40 B
1
1

8.8.8.8:53

rmnzerobased.com

dns

rundll32Srv.exe

62 B
135 B
1
1

DNS Request

rmnzerobased.com
8.8.8.8:53

rmnzerobased.com

dns

rundll32Srv.exe

62 B
135 B
1
1

DNS Request

rmnzerobased.com
8.8.8.8:53

rmnzerobased.com

dns

rundll32Srv.exe

62 B
135 B
1
1

DNS Request

rmnzerobased.com
8.8.8.8:53

rmnzerobased.com

dns

rundll32Srv.exe

62 B
135 B
1
1

DNS Request

rmnzerobased.com
8.8.8.8:53

rmnzerobased.com

dns

rundll32Srv.exe

62 B
135 B
1
1

DNS Request

rmnzerobased.com

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
10KB

MD5
9f7f94a22e1ed7f03995292038b35b98

SHA1
c4c5a6e26687e788b3a0859aa0e6f1917a7334c2

SHA256
a7a43eef41b32a366e865ca71c160ff23e831cce9a28937ff7cd212acd2109e3

SHA512
f775bbddc1f594984c5f7d7b88d211d5ddbd54d2fed1c92ae11b5007f6ef3e00b614f729253c77b8f1471b328dbd6be585309414b4310f0c2840dedb9a743bb4

Download Submit
C:\Windows\SysWOW64\rundll32Srv.exe

Filesize
10KB

MD5
9f7f94a22e1ed7f03995292038b35b98

SHA1
c4c5a6e26687e788b3a0859aa0e6f1917a7334c2

SHA256
a7a43eef41b32a366e865ca71c160ff23e831cce9a28937ff7cd212acd2109e3

SHA512
f775bbddc1f594984c5f7d7b88d211d5ddbd54d2fed1c92ae11b5007f6ef3e00b614f729253c77b8f1471b328dbd6be585309414b4310f0c2840dedb9a743bb4

Download Submit
memory/1464-137-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/1464-138-0x0000000000400000-0x000000000040A000-memory.dmp

Filesize
40KB

Download
memory/4796-136-0x0000000005000000-0x00000000050AC000-memory.dmp

Filesize
688KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

MITRE ATT&CK Matrix

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Downloads

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