c4ffabc8ad4e34a6de92ac93cb9f85b0ad9c01200380b50398a898e19a45a551

Analysis

max time kernel
137s
max time network
140s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20/11/2024, 08:24

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General

Target

c4ffabc8ad4e34a6de92ac93cb9f85b0ad9c01200380b50398a898e19a45a551.xlsm
Size

20KB
MD5

7157c8e92353241c54893d893d98b7b8
SHA1

3b96061a78149f7875c3d89f6713405880c1a1c6
SHA256

c4ffabc8ad4e34a6de92ac93cb9f85b0ad9c01200380b50398a898e19a45a551
SHA512

90411f3284d332554cdd25d841c1cae8d7732a3fda8a9dd6ddecfc6c8c5763f922816187f20873aa26d99b7905c03df39f81fce6af2b2b5511334d07423319c7
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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2880	2672	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
2672	EXCEL.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2880	2672	EXCEL.EXE	31
PID 2672 wrote to memory of 2880	2672	EXCEL.EXE	31
PID 2672 wrote to memory of 2880	2672	EXCEL.EXE	31
PID 2672 wrote to memory of 2880	2672	EXCEL.EXE	31
PID 2672 wrote to memory of 2880	2672	EXCEL.EXE	31
PID 2672 wrote to memory of 2880	2672	EXCEL.EXE	31
PID 2672 wrote to memory of 2880	2672	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\c4ffabc8ad4e34a6de92ac93cb9f85b0ad9c01200380b50398a898e19a45a551.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:2672
- 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:2880

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
7KB

MD5
adcd72d536a231b6e2d2b54fd8d1ec53

SHA1
53a649c3044c8477d1d2e16e8a1172efd31effbf

SHA256
c7521c3fe257008afb7001f7643f4eff175b0c56dd1c8eeeee8be3f881d5dca8

SHA512
2492f491280326ab028d88ba1104909f172eb21e84f4d1c9277b1e1f07f8d6f9fa34c58d8be33e13bf9dc242fbd3e3a401ab9fd407d9fa83c0774cec99e868b7

Download Submit
memory/2672-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2672-1-0x0000000073CED000-0x0000000073CF8000-memory.dmp

Filesize
44KB

Download
memory/2672-20-0x0000000073CED000-0x0000000073CF8000-memory.dmp

Filesize
44KB

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads