100af46515041e4e0e17e773dfa609ecc4b028e47d1d435a71962fcd346d7e9f

General

Target

100af46515041e4e0e17e773dfa609ecc4b028e47d1d435a71962fcd346d7e9f.xlsm
Size

20KB
MD5

08c636c1625fbfd35b80b4177be7aac3
SHA1

c75762ab872b8fe19d3284552bbd95bd0f68f500
SHA256

100af46515041e4e0e17e773dfa609ecc4b028e47d1d435a71962fcd346d7e9f
SHA512

58d9fb2db8037b1d63c6f05c11ae7d790cceb515fa1a4b7cf4ba06c9b5335243ef65e2cd267478a04c4ee83ffff7b5415f00af78b950de6aec6f01d6a044aa4d
SSDEEP

384:iVb1GNjxKo4CGzPd6ZIwISKb5CzgObff9kC+xbX7ZnR:KINco4FLhnCBn9kC+xbLv

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://avirtual.com.ar/portfolio_low/LJtA7G2nnfwBAYE/

xlm40.dropper

http://ard-paya.ir/cgi-bin/ddiue5yX5k28KC33EKw/

xlm40.dropper

http://ascendmedicalsupplies.co.ke/FUTH99YV/faflDNXWq0bPv/

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	1028	2124	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
2124	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2124	EXCEL.EXE
2124	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2124	EXCEL.EXE
2124	EXCEL.EXE
2124	EXCEL.EXE
2124	EXCEL.EXE
2124	EXCEL.EXE
2124	EXCEL.EXE
2124	EXCEL.EXE
2124	EXCEL.EXE
2124	EXCEL.EXE
2124	EXCEL.EXE
2124	EXCEL.EXE
2124	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2124 wrote to memory of 1028	2124	EXCEL.EXE	88
PID 2124 wrote to memory of 1028	2124	EXCEL.EXE	88
PID 2124 wrote to memory of 1028	2124	EXCEL.EXE	88

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\100af46515041e4e0e17e773dfa609ecc4b028e47d1d435a71962fcd346d7e9f.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:2124
- 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:1028

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\kytk.dll

Filesize
7KB

MD5
adcd72d536a231b6e2d2b54fd8d1ec53

SHA1
53a649c3044c8477d1d2e16e8a1172efd31effbf

SHA256
c7521c3fe257008afb7001f7643f4eff175b0c56dd1c8eeeee8be3f881d5dca8

SHA512
2492f491280326ab028d88ba1104909f172eb21e84f4d1c9277b1e1f07f8d6f9fa34c58d8be33e13bf9dc242fbd3e3a401ab9fd407d9fa83c0774cec99e868b7

Download Submit
memory/2124-5-0x00007FFD784F0000-0x00007FFD78500000-memory.dmp

Filesize
64KB

Download
memory/2124-46-0x00007FFDB8470000-0x00007FFDB8665000-memory.dmp

Filesize
2.0MB

Download
memory/2124-9-0x00007FFDB8470000-0x00007FFDB8665000-memory.dmp

Filesize
2.0MB

Download
memory/2124-2-0x00007FFD784F0000-0x00007FFD78500000-memory.dmp

Filesize
64KB

Download
memory/2124-1-0x00007FFDB850D000-0x00007FFDB850E000-memory.dmp

Filesize
4KB

Download
memory/2124-10-0x00007FFDB8470000-0x00007FFDB8665000-memory.dmp

Filesize
2.0MB

Download
memory/2124-11-0x00007FFDB8470000-0x00007FFDB8665000-memory.dmp

Filesize
2.0MB

Download
memory/2124-12-0x00007FFDB8470000-0x00007FFDB8665000-memory.dmp

Filesize
2.0MB

Download
memory/2124-4-0x00007FFD784F0000-0x00007FFD78500000-memory.dmp

Filesize
64KB

Download
memory/2124-3-0x00007FFD784F0000-0x00007FFD78500000-memory.dmp

Filesize
64KB

Download
memory/2124-6-0x00007FFDB8470000-0x00007FFDB8665000-memory.dmp

Filesize
2.0MB

Download
memory/2124-7-0x00007FFDB8470000-0x00007FFDB8665000-memory.dmp

Filesize
2.0MB

Download
memory/2124-13-0x00007FFD76230000-0x00007FFD76240000-memory.dmp

Filesize
64KB

Download
memory/2124-14-0x00007FFD76230000-0x00007FFD76240000-memory.dmp

Filesize
64KB

Download
memory/2124-0-0x00007FFD784F0000-0x00007FFD78500000-memory.dmp

Filesize
64KB

Download
memory/2124-43-0x00007FFDB8470000-0x00007FFDB8665000-memory.dmp

Filesize
2.0MB

Download
memory/2124-44-0x00007FFDB850D000-0x00007FFDB850E000-memory.dmp

Filesize
4KB

Download
memory/2124-45-0x00007FFDB8470000-0x00007FFDB8665000-memory.dmp

Filesize
2.0MB

Download
memory/2124-8-0x00007FFDB8470000-0x00007FFDB8665000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads