c5e91b67025af43532ffbc06cf7009684f0c632e61d1b41a022c6de9243b8c9a

Analysis

max time kernel
61s
max time network
127s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
20/11/2024, 14:15

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General

Target

c5e91b67025af43532ffbc06cf7009684f0c632e61d1b41a022c6de9243b8c9a.xlsm
Size

20KB
MD5

3cf35d21c013505c2af4e059eff8b552
SHA1

c1b2af94d52f68da802dbba83f0820da05110fd6
SHA256

c5e91b67025af43532ffbc06cf7009684f0c632e61d1b41a022c6de9243b8c9a
SHA512

dc82ea8c6411a5fecf1fad1ff1d6e563f87e7ca875bea10cd55335a077ffa6f1dfe1e2afc9b9352e45d327bb2255e6fb268b3dc0b84aff414ca7b8b5e1a0b3c3
SSDEEP

384:eJaVb1GNjImo4CGzPd6ZIwwSKb5CzgObff9kC+xbX7Fg7a:kiIN3o4FLTCBn9kC+xbLF1

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://banrai.ac.th/website/IHI0iNLLWDh9P/

xlm40.dropper

http://bangsoe.dk/__backup/JON6L/

xlm40.dropper

http://bahr.se/tvillingar2-filer/0wFIrmZ70Vl/

xlm40.dropper

https://barkstage.es/wp-content/S0Q/

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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2920	1688	regsvr32.exe	29

System Location Discovery: System Language Discovery 1 TTPs 2 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	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1688	EXCEL.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1688	EXCEL.EXE
1688	EXCEL.EXE
1688	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 2920	1688	EXCEL.EXE	31
PID 1688 wrote to memory of 2920	1688	EXCEL.EXE	31
PID 1688 wrote to memory of 2920	1688	EXCEL.EXE	31
PID 1688 wrote to memory of 2920	1688	EXCEL.EXE	31
PID 1688 wrote to memory of 2920	1688	EXCEL.EXE	31
PID 1688 wrote to memory of 2920	1688	EXCEL.EXE	31
PID 1688 wrote to memory of 2920	1688	EXCEL.EXE	31

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\c5e91b67025af43532ffbc06cf7009684f0c632e61d1b41a022c6de9243b8c9a.xlsm
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\SysWow64\regsvr32.exe
  C:\Windows\SysWow64\regsvr32.exe -s ..\kytk.dll
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\kytk.dll

Filesize
816B

MD5
d2624078a7bfab793ae65a17d6ae4d42

SHA1
639032b04641ea5355ba4db5120770db56b6c7d4

SHA256
95358884295cfc36a99d89ce45b89a2c58840c4738d3f17d063b629f8c82ceb1

SHA512
1d75f579f143e719e12b4ac7487e388897e75036ef74e2bee1ac7da95accb966ab543548bc10e805d06ed8e4d6da1618a32b9ebf217256d83ae818248f464d52

Download Submit
memory/1688-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1688-1-0x0000000072C3D000-0x0000000072C48000-memory.dmp

Filesize
44KB

Download
memory/1688-28-0x0000000072C3D000-0x0000000072C48000-memory.dmp

Filesize
44KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads