64d92f79a2d87571d428b7b19ef4f5c1680c24c8952a2f46b84f217cfba19766

General

Target

kuixlbzk.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	5060	1556	regsvr32.exe	78

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1556	EXCEL.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

pid	Process
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE
1556	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1556 wrote to memory of 5060	1556	EXCEL.EXE	79
PID 1556 wrote to memory of 5060	1556	EXCEL.EXE	79
PID 1556 wrote to memory of 5060	1556	EXCEL.EXE	79

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\kuixlbzk.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1556
- C:\Windows\SysWow64\regsvr32.exe
  C:\Windows\SysWow64\regsvr32.exe -s ..\xewn.dll
  2⤵
  - Process spawned unexpected child process
  PID:5060

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
679KB

MD5
8a38b7766b4b2811963c63b92c424c35

SHA1
4cc10da3061d883a50c79cdad8980be9f6c7bc4d

SHA256
bbd093ff2f04e67f857a1bf0eeddd26896d9b572aaa12c1d98681b617ce526f0

SHA512
75d9ec5e380765ed779ae9eb0479ce0cfd183a44ee675c17f9cf9713ea662408670a98019cc83a22b9984ad0d3cba7a40227ad3ed0497eb35e1ddd03e287fe26

Download Submit
memory/1556-130-0x00007FFC49CD0000-0x00007FFC49CE0000-memory.dmp

Filesize
64KB

Download
memory/1556-131-0x00007FFC49CD0000-0x00007FFC49CE0000-memory.dmp

Filesize
64KB

Download
memory/1556-132-0x00007FFC49CD0000-0x00007FFC49CE0000-memory.dmp

Filesize
64KB

Download
memory/1556-133-0x00007FFC49CD0000-0x00007FFC49CE0000-memory.dmp

Filesize
64KB

Download
memory/1556-134-0x00007FFC49CD0000-0x00007FFC49CE0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads