4737df28e330a5e7a77110b02c1d90f060a9072704142d93eb14bb43c7aae7c1

General

Target

4737df28e330a5e7a77110b02c1d90f060a9072704142d93eb14bb43c7aae7c1.xlsm
Size

20KB
MD5

2272673a9ab26a0bea6249d0407f7636
SHA1

94d423ae8101c679c3f721b1af8c08f488cfc24a
SHA256

4737df28e330a5e7a77110b02c1d90f060a9072704142d93eb14bb43c7aae7c1
SHA512

91e01f32be7a6e2ee14b538c6c16e6d3c564956ffc2e5edb44cb29fe55f6b674f1b4b4a4a6dec8d518e71c4f9541afe205b58da3395d36c797589a274f80908e
SSDEEP

384:G/Vb1GNjU5o4CGzPd6ZIw8R3Kb5CzgObff9kC+xbX7zJBq1:GtINAo4FLkCBn9kC+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	1436	3536	regsvr32.exe	82

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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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
3536	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3536	EXCEL.EXE
3536	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3536	EXCEL.EXE
3536	EXCEL.EXE
3536	EXCEL.EXE
3536	EXCEL.EXE
3536	EXCEL.EXE
3536	EXCEL.EXE
3536	EXCEL.EXE
3536	EXCEL.EXE
3536	EXCEL.EXE
3536	EXCEL.EXE
3536	EXCEL.EXE
3536	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3536 wrote to memory of 1436	3536	EXCEL.EXE	93
PID 3536 wrote to memory of 1436	3536	EXCEL.EXE	93
PID 3536 wrote to memory of 1436	3536	EXCEL.EXE	93

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\4737df28e330a5e7a77110b02c1d90f060a9072704142d93eb14bb43c7aae7c1.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:3536
- 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:1436

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
1KB

MD5
50a03cd1fae24427fcf7d3b4036086dd

SHA1
31761c0a406b5cefc3e8531ef272a23e76b86fad

SHA256
18bdb247e28f0b6723dda6ec0c9e1d0d0606374d1567bea29a6363247471d3ec

SHA512
80f76d5bb46d00f0e122e085d7b8a47c19489ec23cd96498bf84888d04e0c1ea2f636eadfd92a604d94c72270fb02e49b17952a8fd7a95fa34cad4b9d93101ae

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

Filesize
106KB

MD5
f148a6cfb5030f7ee526652aea4fe549

SHA1
c72da5f478ecc29db7ebe739859187f24fa4b0f8

SHA256
28243c8da5e1441d3e033e67f3c031b43a52974f473cdbf4e7838de241843cac

SHA512
44f09a4dc975e9c6c7bd0e4164921b38440a70a5fe3f7907309ccdc721cd977b78c0f770f008eb27015af3edcb2a4d5fc6c6a7f02596cd25e977b140d080163f

Download Submit
memory/3536-13-0x00007FFC369B0000-0x00007FFC369C0000-memory.dmp

Filesize
64KB

Download
memory/3536-15-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-1-0x00007FFC38CF0000-0x00007FFC38D00000-memory.dmp

Filesize
64KB

Download
memory/3536-2-0x00007FFC38CF0000-0x00007FFC38D00000-memory.dmp

Filesize
64KB

Download
memory/3536-9-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-8-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-11-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-12-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-0-0x00007FFC38CF0000-0x00007FFC38D00000-memory.dmp

Filesize
64KB

Download
memory/3536-10-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-14-0x00007FFC369B0000-0x00007FFC369C0000-memory.dmp

Filesize
64KB

Download
memory/3536-5-0x00007FFC38CF0000-0x00007FFC38D00000-memory.dmp

Filesize
64KB

Download
memory/3536-7-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-6-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-16-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-18-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-19-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-17-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-47-0x00007FFC78C70000-0x00007FFC78E65000-memory.dmp

Filesize
2.0MB

Download
memory/3536-4-0x00007FFC38CF0000-0x00007FFC38D00000-memory.dmp

Filesize
64KB

Download
memory/3536-3-0x00007FFC78D0D000-0x00007FFC78D0E000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads