c4ffabc8ad4e34a6de92ac93cb9f85b0ad9c01200380b50398a898e19a45a551

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\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3084	2628	regsvr32.exe	84

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
2628	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2628	EXCEL.EXE
2628	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2628	EXCEL.EXE
2628	EXCEL.EXE
2628	EXCEL.EXE
2628	EXCEL.EXE
2628	EXCEL.EXE
2628	EXCEL.EXE
2628	EXCEL.EXE
2628	EXCEL.EXE
2628	EXCEL.EXE
2628	EXCEL.EXE
2628	EXCEL.EXE
2628	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 3084	2628	EXCEL.EXE	93
PID 2628 wrote to memory of 3084	2628	EXCEL.EXE	93
PID 2628 wrote to memory of 3084	2628	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\c4ffabc8ad4e34a6de92ac93cb9f85b0ad9c01200380b50398a898e19a45a551.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:2628
- 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:3084

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
8a881e254a20219dafff173e33c427c1

SHA1
967299557f4da566368687cbf694608e06120037

SHA256
d05db3ab6a9ddf207edc435a128b53e61837c05869022d5a4c3a7cbd38fe80a4

SHA512
c833b18243cb974c9b8331ec0f21c93b9cde08bb059621c685e55fbae172a8f59fac33d2670b8eb314ea1552c95a7ff92e3edb7f23181a9445ed240016514e3d

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

Filesize
7KB

MD5
adcd72d536a231b6e2d2b54fd8d1ec53

SHA1
53a649c3044c8477d1d2e16e8a1172efd31effbf

SHA256
c7521c3fe257008afb7001f7643f4eff175b0c56dd1c8eeeee8be3f881d5dca8

SHA512
2492f491280326ab028d88ba1104909f172eb21e84f4d1c9277b1e1f07f8d6f9fa34c58d8be33e13bf9dc242fbd3e3a401ab9fd407d9fa83c0774cec99e868b7

Download Submit
memory/2628-15-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-5-0x00007FFF098B0000-0x00007FFF098C0000-memory.dmp

Filesize
64KB

Download
memory/2628-4-0x00007FFF098B0000-0x00007FFF098C0000-memory.dmp

Filesize
64KB

Download
memory/2628-8-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-10-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-9-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-7-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-16-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-14-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-13-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-3-0x00007FFF098B0000-0x00007FFF098C0000-memory.dmp

Filesize
64KB

Download
memory/2628-1-0x00007FFF498CD000-0x00007FFF498CE000-memory.dmp

Filesize
4KB

Download
memory/2628-6-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-17-0x00007FFF076C0000-0x00007FFF076D0000-memory.dmp

Filesize
64KB

Download
memory/2628-12-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-11-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-18-0x00007FFF076C0000-0x00007FFF076D0000-memory.dmp

Filesize
64KB

Download
memory/2628-2-0x00007FFF098B0000-0x00007FFF098C0000-memory.dmp

Filesize
64KB

Download
memory/2628-39-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-40-0x00007FFF498CD000-0x00007FFF498CE000-memory.dmp

Filesize
4KB

Download
memory/2628-41-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-42-0x00007FFF49830000-0x00007FFF49A25000-memory.dmp

Filesize
2.0MB

Download
memory/2628-0-0x00007FFF098B0000-0x00007FFF098C0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads