405464d6ca86144e95b0c03bfcea1c3aaf82f020d305bbef1f3f1a2edca33157

General

Target

405464d6ca86144e95b0c03bfcea1c3aaf82f020d305bbef1f3f1a2edca33157.xlsm
Size

20KB
MD5

fab7493514ddc7ada50c8e721bf39134
SHA1

96ed7dec90b93424cb518778adbbbbab5571cb53
SHA256

405464d6ca86144e95b0c03bfcea1c3aaf82f020d305bbef1f3f1a2edca33157
SHA512

5e919e5e0d0678ce89af409c5f5defe0af82a3a52003c21ec01b097be3709c4614eb3e7eb2023f36ed19caaf103a9e927f100b38421fa88ff743bbd33feb7240
SSDEEP

384:a/Vb1GNjU5o4CGzPd6ZIw8R3Kb5CzgObff9kC+xbX7zJBq1:atINAo4FLkCBn9kC+xbLzJy

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://antaoco.com/wp-admin/5WaIjOuHnUj/

xlm40.dropper

http://amakpost.com/assets/IaeePiSroWtpfZ8uURa/

xlm40.dropper

http://anat-bar.co.il/cgi-bin/UNS6bRMcF4pOTf/

xlm40.dropper

http://andrewpharma.com/wp-includes/WqgKtKrYJM/

xlm40.dropper

http://amkltd.co.uk/amk/IPuhx/

xlm40.dropper

http://gees.com.pl/geessw/2YmxITo6/

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	3056	3012	regsvr32.exe	81

System Location Discovery: System Language Discovery 1 TTPs 1 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	regsvr32.exe

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3012	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3012	EXCEL.EXE
3012	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3012	EXCEL.EXE
3012	EXCEL.EXE
3012	EXCEL.EXE
3012	EXCEL.EXE
3012	EXCEL.EXE
3012	EXCEL.EXE
3012	EXCEL.EXE
3012	EXCEL.EXE
3012	EXCEL.EXE
3012	EXCEL.EXE
3012	EXCEL.EXE
3012	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3012 wrote to memory of 3056	3012	EXCEL.EXE	90
PID 3012 wrote to memory of 3056	3012	EXCEL.EXE	90
PID 3012 wrote to memory of 3056	3012	EXCEL.EXE	90

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\405464d6ca86144e95b0c03bfcea1c3aaf82f020d305bbef1f3f1a2edca33157.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3012
- 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:3056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
2KB

MD5
e2d9617ef78b894a4af7c601ea30b733

SHA1
1fc05b81498bb150172ea7f93be9ec8a416cc023

SHA256
962d746a5f688c8963db369a38d6cd5390c55d139c14850874963f9943c757f2

SHA512
b72700585e36b841734cca23130131cc000cd56f14a2739dd57fa51b4e922686fa527aca7139651f2de14fed43b6c1c73f45136342217e116df2e1aed392b527

Download Submit
C:\Users\Admin\kytk.dll

Filesize
106KB

MD5
f148a6cfb5030f7ee526652aea4fe549

SHA1
c72da5f478ecc29db7ebe739859187f24fa4b0f8

SHA256
28243c8da5e1441d3e033e67f3c031b43a52974f473cdbf4e7838de241843cac

SHA512
44f09a4dc975e9c6c7bd0e4164921b38440a70a5fe3f7907309ccdc721cd977b78c0f770f008eb27015af3edcb2a4d5fc6c6a7f02596cd25e977b140d080163f

Download Submit
memory/3012-14-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-12-0x00007FFD138B0000-0x00007FFD138C0000-memory.dmp

Filesize
64KB

Download
memory/3012-5-0x00007FFD160B0000-0x00007FFD160C0000-memory.dmp

Filesize
64KB

Download
memory/3012-8-0x00007FFD160B0000-0x00007FFD160C0000-memory.dmp

Filesize
64KB

Download
memory/3012-7-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-10-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-13-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-9-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-11-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-6-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-4-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-0-0x00007FFD160B0000-0x00007FFD160C0000-memory.dmp

Filesize
64KB

Download
memory/3012-19-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-16-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-18-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-17-0x00007FFD138B0000-0x00007FFD138C0000-memory.dmp

Filesize
64KB

Download
memory/3012-2-0x00007FFD160B0000-0x00007FFD160C0000-memory.dmp

Filesize
64KB

Download
memory/3012-15-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-45-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-46-0x00007FFD560CD000-0x00007FFD560CE000-memory.dmp

Filesize
4KB

Download
memory/3012-47-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-1-0x00007FFD560CD000-0x00007FFD560CE000-memory.dmp

Filesize
4KB

Download
memory/3012-53-0x00007FFD56030000-0x00007FFD56225000-memory.dmp

Filesize
2.0MB

Download
memory/3012-3-0x00007FFD160B0000-0x00007FFD160C0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads