61604f0c5807e98f4b10a9a20a70703339c77907bfdd7ad7fb9bf41bb4788936

General

Target

61604f0c5807e98f4b10a9a20a70703339c77907bfdd7ad7fb9bf41bb4788936.xls
Size

95KB
MD5

22325fb8bd19234e9c2b60d952ebe55c
SHA1

c55c5eec13cc8a84be7a670c9daccfc5ebf03280
SHA256

61604f0c5807e98f4b10a9a20a70703339c77907bfdd7ad7fb9bf41bb4788936
SHA512

e4ec624fcb31de4ba382c3194c9d9c183b5e9492114c36bfe743a83eddc770dd9822d24b62949217ed93235185f62834d6fc5155d1f9b21ef4cd7a2b5a05ce32
SSDEEP

1536:iFKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgBHuS4hcTO97v7UYdEJm8q:cKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgC

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://atperson.com/campusvirtual/3aAaeSKPaURF/

xlm40.dropper

https://buffetmazzi.com.br/ckfinder/i/

xlm40.dropper

http://atici.net/c/MgEC/

xlm40.dropper

http://www.birebiregitim.net/wp-includes/f/

Signatures

Process spawned unexpected child process 4 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	3560	2452	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3760	2452	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	764	2452	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4084	2452	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
2452	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2452	EXCEL.EXE
2452	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE
2452	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2452 wrote to memory of 3560	2452	EXCEL.EXE	85
PID 2452 wrote to memory of 3560	2452	EXCEL.EXE	85
PID 2452 wrote to memory of 3760	2452	EXCEL.EXE	96
PID 2452 wrote to memory of 3760	2452	EXCEL.EXE	96
PID 2452 wrote to memory of 764	2452	EXCEL.EXE	101
PID 2452 wrote to memory of 764	2452	EXCEL.EXE	101
PID 2452 wrote to memory of 4084	2452	EXCEL.EXE	102
PID 2452 wrote to memory of 4084	2452	EXCEL.EXE	102

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\61604f0c5807e98f4b10a9a20a70703339c77907bfdd7ad7fb9bf41bb4788936.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:2452
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
  2⤵
  - Process spawned unexpected child process
  PID:3560
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
  2⤵
  - Process spawned unexpected child process
  PID:3760
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
  2⤵
  - Process spawned unexpected child process
  PID:764
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4084

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
f668e9f8425e1d85051d53ab5024d20e

SHA1
02ddcd73d88bafa60a856033ce743cd0252b8404

SHA256
dc7fce9ae256f7655159d126c2960623703616ee8f70beda4d8cb578fd29b8fa

SHA512
4302b061f7d1504a09b8ffb37ff55fe4ad553f97320e6f9e992a9770a166cdad4f03b981d8ed658079f9ad7a163b2e9cb590bc1a5092dd62051c3bb6b7de6237

Download Submit
memory/2452-3-0x00007FFEF4BB0000-0x00007FFEF4BC0000-memory.dmp

Filesize
64KB

Download
memory/2452-0-0x00007FFEF4BB0000-0x00007FFEF4BC0000-memory.dmp

Filesize
64KB

Download
memory/2452-12-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-7-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-6-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-9-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-8-0x00007FFEF4BB0000-0x00007FFEF4BC0000-memory.dmp

Filesize
64KB

Download
memory/2452-5-0x00007FFEF4BB0000-0x00007FFEF4BC0000-memory.dmp

Filesize
64KB

Download
memory/2452-10-0x00007FFEF2AF0000-0x00007FFEF2B00000-memory.dmp

Filesize
64KB

Download
memory/2452-14-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-4-0x00007FFEF4BB0000-0x00007FFEF4BC0000-memory.dmp

Filesize
64KB

Download
memory/2452-2-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-11-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-15-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-18-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-17-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-19-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-16-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-13-0x00007FFEF2AF0000-0x00007FFEF2B00000-memory.dmp

Filesize
64KB

Download
memory/2452-22-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-23-0x00007FFF34BCD000-0x00007FFF34BCE000-memory.dmp

Filesize
4KB

Download
memory/2452-24-0x00007FFF34B30000-0x00007FFF34D25000-memory.dmp

Filesize
2.0MB

Download
memory/2452-1-0x00007FFF34BCD000-0x00007FFF34BCE000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads