64d92f79a2d87571d428b7b19ef4f5c1680c24c8952a2f46b84f217cfba19766

General

Target

yykbdody.xlsm
Size

46KB
MD5

363495acb4327435709de91edaef8338
SHA1

11ea485cddc9de2db0397f02f00a564a9468f032
SHA256

64d92f79a2d87571d428b7b19ef4f5c1680c24c8952a2f46b84f217cfba19766
SHA512

1502abfa4494c69541cbaf3f00b176f04a45802b35a0818f0a46cd229a99dd675a7b8746efa946ea37efd7305c18a00eaba4a48c251d19d084fcbf4e575cf10e

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://eles-tech.com/css/KzMysMqFMs/

xlm40.dropper

http://gonorthhalifax.com/wp-content/yTmYyLbTKZV2czsUO/

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3668	1964	regsvr32.exe	76

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1964	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE
1964	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 3668	1964	EXCEL.EXE	86
PID 1964 wrote to memory of 3668	1964	EXCEL.EXE	86
PID 1964 wrote to memory of 3668	1964	EXCEL.EXE	86

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\yykbdody.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Windows\SysWow64\regsvr32.exe
  C:\Windows\SysWow64\regsvr32.exe -s ..\xewn.dll
  2⤵
  - Process spawned unexpected child process
  PID:3668

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\xewn.dll

Filesize
678KB

MD5
6789a3761df752154ee9a9924e1b0b98

SHA1
3f97aae88c45e22e7fde7a83c828a533c0eb62b6

SHA256
c4561a980d8a0bef503a14c8a03b2e9dffbbb2d38df760e621451444a5892c14

SHA512
20940c80acb47bfcafd6d364ee47c316965f3509057aa7d578d3ed94b5b1c5a68bd8faf32bd5080f18e0882bde34aa7ed997ad68db1f72c5237f36ec78f438e3

Download Submit
memory/1964-130-0x00007FFC8F810000-0x00007FFC8F820000-memory.dmp

Filesize
64KB

Download
memory/1964-131-0x00007FFC8F810000-0x00007FFC8F820000-memory.dmp

Filesize
64KB

Download
memory/1964-132-0x00007FFC8F810000-0x00007FFC8F820000-memory.dmp

Filesize
64KB

Download
memory/1964-133-0x00007FFC8F810000-0x00007FFC8F820000-memory.dmp

Filesize
64KB

Download
memory/1964-134-0x00007FFC8F810000-0x00007FFC8F820000-memory.dmp

Filesize
64KB

Download
memory/1964-135-0x00007FFC8D0F0000-0x00007FFC8D100000-memory.dmp

Filesize
64KB

Download
memory/1964-136-0x00007FFC8D0F0000-0x00007FFC8D100000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads