50b3a811481295d5a9f00df228a89eb6bb56d99e313ba1fcfa4e1f606975cbc5

General

Target

specification-730729009.xls
Size

258KB
MD5

18df8b279d3bb6c443eea9c9efc47636
SHA1

03125e165dccb330c3bdbc92bab0bf275de626b4
SHA256

9d4d08dd78894b65adc73fe96371f94437f902797fd5ce407aabc9937cd4a5c1
SHA512

ad6bc0babfdb9d8cb92dee36ca2b7e024d52f5adef68f9307de24cbc139cd69369c2be878952b516c18fcc4b7f798e86e382a53f9a42fda77b6abd8ed16e20c6

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://ricardopiresfotografia.com/RpuaNlWy/host.html

xlm40.dropper

https://keysite.com.co/IQ3mbS6EF/host.html

xlm40.dropper

https://colegiobilinguepioxii.com.co/SYqvKoF4/host.html

Signatures

Process spawned unexpected child process 3 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	2504	4016	regsvr32.exe	67
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3656	4016	regsvr32.exe	67
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3868	4016	regsvr32.exe	67

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\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4016	EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

pid	Process
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE
4016	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4016 wrote to memory of 2504	4016	EXCEL.EXE	73
PID 4016 wrote to memory of 2504	4016	EXCEL.EXE	73
PID 4016 wrote to memory of 3656	4016	EXCEL.EXE	76
PID 4016 wrote to memory of 3656	4016	EXCEL.EXE	76
PID 4016 wrote to memory of 3868	4016	EXCEL.EXE	77
PID 4016 wrote to memory of 3868	4016	EXCEL.EXE	77

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\specification-730729009.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4016
- C:\Windows\System32\regsvr32.exe
  "C:\Windows\System32\regsvr32.exe" C:\Datop\test.test
  2⤵
  - Process spawned unexpected child process
  PID:2504
- C:\Windows\System32\regsvr32.exe
  "C:\Windows\System32\regsvr32.exe" C:\Datop\test1.test
  2⤵
  - Process spawned unexpected child process
  PID:3656
- C:\Windows\System32\regsvr32.exe
  "C:\Windows\System32\regsvr32.exe" C:\Datop\test2.test
  2⤵
  - Process spawned unexpected child process
  PID:3868

Network

MITRE ATT&CK Enterprise v6

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

memory/4016-114-0x00007FF66FA30000-0x00007FF672FE6000-memory.dmp

Filesize
53.7MB

Download
memory/4016-115-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

Filesize
64KB

Download
memory/4016-116-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

Filesize
64KB

Download
memory/4016-117-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

Filesize
64KB

Download
memory/4016-118-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

Filesize
64KB

Download
memory/4016-121-0x00007FFB5C580000-0x00007FFB5C590000-memory.dmp

Filesize
64KB

Download
memory/4016-122-0x00007FFB7E630000-0x00007FFB7F71E000-memory.dmp

Filesize
16.9MB

Download
memory/4016-123-0x00007FFB7C730000-0x00007FFB7E625000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads