8d15b901b4bef6537f63956b7c7a924c2a0a3708c1af23807ec28c521bb6e956

General

Target

8d15b901b4bef6537f63956b7c7a924c2a0a3708c1af23807ec28c521bb6e956.xlsm
Size

20KB
MD5

0b2bd21912e427436270ee0de2a61ceb
SHA1

402434271af15eb91696d1d095e0867cbea5c8a9
SHA256

8d15b901b4bef6537f63956b7c7a924c2a0a3708c1af23807ec28c521bb6e956
SHA512

5233486a963e06fef59f3b9020864ba1be96f63d100a4b37c9a631d3ba9345a6ebf4854cf496648367052c3237bd716c7663daea90e5f12b94819efa8e709165
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	3360	5032	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 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
5032	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
5032	EXCEL.EXE
5032	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE
5032	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5032 wrote to memory of 3360	5032	EXCEL.EXE	90
PID 5032 wrote to memory of 3360	5032	EXCEL.EXE	90
PID 5032 wrote to memory of 3360	5032	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\8d15b901b4bef6537f63956b7c7a924c2a0a3708c1af23807ec28c521bb6e956.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:5032
- 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:3360

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

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Downloads

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

Filesize
1KB

MD5
a8d630151e0baed875e4a3abf28afd9f

SHA1
21b9fef5baa834b67bffd71d925402f4ae0f1238

SHA256
68aff6817b586e6cb858ca58574f6429166b3242a117e9470c799862974a1198

SHA512
9ff7d6e7a099091c7efd018ee99a3d2e5caa0a45dbd7ae2b781a59d219c50d170e8672af7997c18f3c4cda4a3f5f670f247f59055e18dbd2ec8f874d6064639a

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

Filesize
106KB

MD5
f148a6cfb5030f7ee526652aea4fe549

SHA1
c72da5f478ecc29db7ebe739859187f24fa4b0f8

SHA256
28243c8da5e1441d3e033e67f3c031b43a52974f473cdbf4e7838de241843cac

SHA512
44f09a4dc975e9c6c7bd0e4164921b38440a70a5fe3f7907309ccdc721cd977b78c0f770f008eb27015af3edcb2a4d5fc6c6a7f02596cd25e977b140d080163f

Download Submit
memory/5032-14-0x00007FF9C4430000-0x00007FF9C4440000-memory.dmp

Filesize
64KB

Download
memory/5032-39-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-2-0x00007FF9C6710000-0x00007FF9C6720000-memory.dmp

Filesize
64KB

Download
memory/5032-4-0x00007FF9C6710000-0x00007FF9C6720000-memory.dmp

Filesize
64KB

Download
memory/5032-9-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-11-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-12-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-13-0x00007FF9C4430000-0x00007FF9C4440000-memory.dmp

Filesize
64KB

Download
memory/5032-10-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-8-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-3-0x00007FFA0672D000-0x00007FFA0672E000-memory.dmp

Filesize
4KB

Download
memory/5032-5-0x00007FF9C6710000-0x00007FF9C6720000-memory.dmp

Filesize
64KB

Download
memory/5032-20-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-18-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-17-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-22-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-21-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-19-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-16-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-7-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-6-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-15-0x00007FFA06690000-0x00007FFA06885000-memory.dmp

Filesize
2.0MB

Download
memory/5032-0-0x00007FF9C6710000-0x00007FF9C6720000-memory.dmp

Filesize
64KB

Download
memory/5032-1-0x00007FF9C6710000-0x00007FF9C6720000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads