Malware Analysis Report

2025-03-15 07:22

Sample ID 241111-y3k49avjhv
Target 8582ac823d04916033a900fa4a2e7879e259b405ed42bb3ccd8fc861b2828cbb
SHA256 8582ac823d04916033a900fa4a2e7879e259b405ed42bb3ccd8fc861b2828cbb
Tags
macro xlm discovery
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

8582ac823d04916033a900fa4a2e7879e259b405ed42bb3ccd8fc861b2828cbb

Threat Level: Known bad

The file 8582ac823d04916033a900fa4a2e7879e259b405ed42bb3ccd8fc861b2828cbb was found to be: Known bad.

Malicious Activity Summary

macro xlm discovery

Process spawned unexpected child process

Suspicious Office macro

System Location Discovery: System Language Discovery

Suspicious behavior: AddClipboardFormatListener

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

Enumerates system info in registry

Checks processor information in registry

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-11-11 20:18

Signatures

Suspicious Office macro

macro xlm
Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-11-11 20:18

Reported

2024-11-11 20:21

Platform

win7-20240903-en

Max time kernel

142s

Max time network

146s

Command Line

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\8582ac823d04916033a900fa4a2e7879e259b405ed42bb3ccd8fc861b2828cbb.xlsm

Signatures

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Enumerates system info in registry

Description Indicator Process Target
Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE N/A

Processes

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE

"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\8582ac823d04916033a900fa4a2e7879e259b405ed42bb3ccd8fc861b2828cbb.xlsm

Network

Country Destination Domain Proto
US 8.8.8.8:53 antaoco.com udp
US 8.8.8.8:53 amakpost.com udp
US 204.11.56.48:80 amakpost.com tcp
US 8.8.8.8:53 anat-bar.co.il udp
US 8.8.8.8:53 andrewpharma.com udp
KR 112.175.184.95:80 andrewpharma.com tcp
US 8.8.8.8:53 amkltd.co.uk udp
GB 149.255.62.156:80 amkltd.co.uk tcp
GB 149.255.62.156:443 amkltd.co.uk tcp
GB 149.255.62.156:443 amkltd.co.uk tcp
GB 149.255.62.156:443 amkltd.co.uk tcp
GB 149.255.62.156:443 amkltd.co.uk tcp
US 8.8.8.8:53 gees.com.pl udp
PL 93.157.100.37:80 gees.com.pl tcp
PL 93.157.100.37:443 gees.com.pl tcp
US 8.8.8.8:53 repository.certum.pl udp
US 95.100.195.11:80 repository.certum.pl tcp
US 8.8.8.8:53 www.bridgeaustria.at udp
FR 92.205.48.90:80 www.bridgeaustria.at tcp

Files

memory/1608-1-0x0000000072ACD000-0x0000000072AD8000-memory.dmp

memory/1608-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\Cab9FBC.tmp

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

C:\Users\Admin\AppData\Local\Temp\Tar9FCE.tmp

MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

memory/1608-225-0x0000000072ACD000-0x0000000072AD8000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-11-11 20:18

Reported

2024-11-11 20:21

Platform

win10v2004-20241007-en

Max time kernel

133s

Max time network

143s

Command Line

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\8582ac823d04916033a900fa4a2e7879e259b405ed42bb3ccd8fc861b2828cbb.xlsm"

Signatures

Process spawned unexpected child process

Description Indicator Process Target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process N/A C:\Windows\SysWow64\regsvr32.exe C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Windows\SysWow64\regsvr32.exe N/A

Checks processor information in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Enumerates system info in registry

Description Indicator Process Target
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious behavior: AddClipboardFormatListener

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Suspicious use of FindShellTrayWindow

Description Indicator Process Target
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A
N/A N/A C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE N/A

Processes

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE

"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\8582ac823d04916033a900fa4a2e7879e259b405ed42bb3ccd8fc861b2828cbb.xlsm"

C:\Windows\SysWow64\regsvr32.exe

C:\Windows\SysWow64\regsvr32.exe -s ..\kytk.dll

Network

Country Destination Domain Proto
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 roaming.officeapps.live.com udp
IE 52.109.76.243:443 roaming.officeapps.live.com tcp
US 8.8.8.8:53 antaoco.com udp
US 8.8.8.8:53 amakpost.com udp
US 204.11.56.48:80 amakpost.com tcp
US 8.8.8.8:53 243.76.109.52.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 240.76.109.52.in-addr.arpa udp
US 8.8.8.8:53 anat-bar.co.il udp
US 8.8.8.8:53 andrewpharma.com udp
KR 112.175.184.95:80 andrewpharma.com tcp
US 8.8.8.8:53 amkltd.co.uk udp
GB 149.255.62.156:80 amkltd.co.uk tcp
US 8.8.8.8:53 138.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 48.56.11.204.in-addr.arpa udp
US 8.8.8.8:53 95.184.175.112.in-addr.arpa udp
GB 149.255.62.156:443 amkltd.co.uk tcp
US 8.8.8.8:53 r10.o.lencr.org udp
GB 2.23.210.82:80 r10.o.lencr.org tcp
US 8.8.8.8:53 www.amkltd.co.uk udp
GB 149.255.62.156:443 www.amkltd.co.uk tcp
US 8.8.8.8:53 gees.com.pl udp
PL 93.157.100.37:80 gees.com.pl tcp
US 8.8.8.8:53 156.62.255.149.in-addr.arpa udp
US 8.8.8.8:53 32.169.19.2.in-addr.arpa udp
US 8.8.8.8:53 82.210.23.2.in-addr.arpa udp
PL 93.157.100.37:443 gees.com.pl tcp
US 8.8.8.8:53 cyberfolks2.ocsp-certum.com udp
US 95.100.195.48:80 cyberfolks2.ocsp-certum.com tcp
US 8.8.8.8:53 37.100.157.93.in-addr.arpa udp
US 8.8.8.8:53 48.195.100.95.in-addr.arpa udp
US 8.8.8.8:53 61.195.100.95.in-addr.arpa udp
US 8.8.8.8:53 1.173.189.20.in-addr.arpa udp
US 8.8.8.8:53 209.205.72.20.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 75.209.201.84.in-addr.arpa udp
US 8.8.8.8:53 21.236.111.52.in-addr.arpa udp
US 8.8.8.8:53 19.229.111.52.in-addr.arpa udp

Files

memory/1568-0-0x00007FFCE9070000-0x00007FFCE9080000-memory.dmp

memory/1568-1-0x00007FFD2908D000-0x00007FFD2908E000-memory.dmp

memory/1568-3-0x00007FFCE9070000-0x00007FFCE9080000-memory.dmp

memory/1568-2-0x00007FFCE9070000-0x00007FFCE9080000-memory.dmp

memory/1568-5-0x00007FFCE9070000-0x00007FFCE9080000-memory.dmp

memory/1568-4-0x00007FFCE9070000-0x00007FFCE9080000-memory.dmp

memory/1568-8-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-10-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-12-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-11-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-13-0x00007FFCE6E20000-0x00007FFCE6E30000-memory.dmp

memory/1568-9-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-7-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-15-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-17-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-19-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-18-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-16-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-14-0x00007FFCE6E20000-0x00007FFCE6E30000-memory.dmp

memory/1568-6-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

C:\Users\Admin\kytk.dll

MD5 a41b9f13b3714b389e52ec069255dd5d
SHA1 ccf0477139c2da4e19ebb9c78cbdd74ebbbae0df
SHA256 66b9b031f6bd5c88861c509cc48685e2c5fdb4748705b6be3038e9f7747e7dc6
SHA512 f508075589da944538903bcf6d4c9428998256fe5d9e594de4015f0920674f693d95abac62b1f34eb107e9588b22adc11a054ede795b2a2ba9ac398709cb068e

memory/1568-50-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-51-0x00007FFD2908D000-0x00007FFD2908E000-memory.dmp

memory/1568-52-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

memory/1568-56-0x00007FFD28FF0000-0x00007FFD291E5000-memory.dmp

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

MD5 8ddad547e571fa8171de96fb478c8700
SHA1 b657eeb40f0116933ec2a94165c0ac93cbd6df26
SHA256 b7fa8482c6d8e73530e2be0283651c3dc72aaaf41f324bc06ef01e550fa35fe1
SHA512 7cad7cbc09b8f7a7d9a54ba122b7c1c0a294097375d63e71195b9cea5144f649b1d4d9303412bd8279a1fdeb5da99cfecfa30eaee886e4d9965c8dac32b25963