da7b606e8d29bbca692fb9bc56f36003b5ea4e27e62f90848559501155c23afd

General

Target

11f44531fb088d31307d87b01e8eabff/research-1646684671.xls
Size

648KB
MD5

b775cd8be83696ca37b2fe00bcb40574
SHA1

60c8a9fdf2b24f8fb4913d4745a8557df5ff8e07
SHA256

1df68d55968bb9d2db4d0d18155188a03a442850ff543c8595166ac6987df820
SHA512

5ad4da8582bec3cc545e322cad2e356f59c4bfa5fe4ca90c0e781dd0e63a7aefbcc27b4045583232e4fdccffbc2bceb832b8d8e9ec3c070cf4b6559ca3c99a72
SSDEEP

6144:Hknl9oBdySAx76F6XeyTVtW/9Ny9ABnl5/PBgxOHjuM9Mn:jl5/WxIji

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://nws.visionconsulting.ro/N1G1KCXA/dot.html

xlm40.dropper

https://royalpalm.sparkblue.lk/vCNhYrq3Yg8/dot.html

Signatures

Process spawned unexpected child process 2 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	4880	716	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1992	716	regsvr32.exe	82

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
716	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
716	EXCEL.EXE
716	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE
716	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 716 wrote to memory of 4880	716	EXCEL.EXE	87
PID 716 wrote to memory of 4880	716	EXCEL.EXE	87
PID 716 wrote to memory of 1992	716	EXCEL.EXE	88
PID 716 wrote to memory of 1992	716	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\11f44531fb088d31307d87b01e8eabff\research-1646684671.xls"
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:716
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -s ..\iroto.dll
  2⤵
  - Process spawned unexpected child process
  PID:4880
- C:\Windows\SYSTEM32\regsvr32.exe
  regsvr32 -s ..\iroto1.dll
  2⤵
  - Process spawned unexpected child process
  PID:1992

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

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
fa57d0ef52c309deb1e568369a758ff1

SHA1
609746e0b18941b54c8da939299deb287b742206

SHA256
0eba4a3d3d6855028c271c62ac8f24f6a05e602e3a230513d419ddc71fbff883

SHA512
19c3c3df6c08fdc1dfe8f69c11495459596e9becb35f137ebbd4431825f35a6191e28bdd9197ce98e1ebfbcda31931f4469bab24ae0b26c47dcacbc7d22bd276

Download Submit
memory/716-15-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-5-0x00007FFEF4BB0000-0x00007FFEF4BC0000-memory.dmp

Filesize
64KB

Download
memory/716-19-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-6-0x00007FFEF4BB0000-0x00007FFEF4BC0000-memory.dmp

Filesize
64KB

Download
memory/716-4-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-1-0x00007FFEF4BB0000-0x00007FFEF4BC0000-memory.dmp

Filesize
64KB

Download
memory/716-7-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-8-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-20-0x00007FFEF2AF0000-0x00007FFEF2B00000-memory.dmp

Filesize
64KB

Download
memory/716-3-0x00007FFF34BCD000-0x00007FFF34BCE000-memory.dmp

Filesize
4KB

Download
memory/716-2-0x00007FFEF4BB0000-0x00007FFEF4BC0000-memory.dmp

Filesize
64KB

Download
memory/716-0-0x00007FFEF4BB0000-0x00007FFEF4BC0000-memory.dmp

Filesize
64KB

Download
memory/716-13-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-18-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-16-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-14-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-12-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-11-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-10-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-9-0x00007FFEF2AF0000-0x00007FFEF2B00000-memory.dmp

Filesize
64KB

Download
memory/716-33-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/716-17-0x00007FFF34B30000-0x00007FFF34D25000-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