cb44cb0f0e5169bcf4a7099e9970d615e885c20f8e2b8d2d07a18c808424c631

Analysis

max time kernel
149s
max time network
152s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
03/11/2022, 13:37

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General

Target

cb44cb0f0e5169bcf4a7099e9970d615e885c20f8e2b8d2d07a18c808424c631.xls
Size

217KB
MD5

fa8d20151a415ca0ef72218600e13749
SHA1

95cdbdda6f92efd6bcbac062e35346b5998c1222
SHA256

cb44cb0f0e5169bcf4a7099e9970d615e885c20f8e2b8d2d07a18c808424c631
SHA512

c6c84e71e4627c7277bdbcce7421a6da71ae1887b94d2e883dfe975f0419e243074d7fdb1e38d3acbf9ab002c9ce63a091673dd64247e8bb793da57fd47e72b2
SSDEEP

6144:OKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgIyY+TAQXTHGUMEyP5p6f5jQmr:bbGUMVWlbr

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://aprendeconmireia.com/images/wBu/

xlm40.dropper

http://updailymail.com/cgi-bin/gBYmfqRi2utIS2n/

xlm40.dropper

https://akuntansi.itny.ac.id/asset/9aVFvYeaSKOhGBSLx/

xlm40.dropper

http://swiftwebbox.com/cgi-bin/vNqoMtQilpysJYRwtGu/

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	5060	3336	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5044	3336	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4912	3336	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3996	3336	regsvr32.exe	65

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3336	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3336	EXCEL.EXE
3336	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3336	EXCEL.EXE
3336	EXCEL.EXE
3336	EXCEL.EXE
3336	EXCEL.EXE
3336	EXCEL.EXE
3336	EXCEL.EXE
3336	EXCEL.EXE
3336	EXCEL.EXE
3336	EXCEL.EXE
3336	EXCEL.EXE
3336	EXCEL.EXE
3336	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3336 wrote to memory of 5060	3336	EXCEL.EXE	68
PID 3336 wrote to memory of 5060	3336	EXCEL.EXE	68
PID 3336 wrote to memory of 5044	3336	EXCEL.EXE	69
PID 3336 wrote to memory of 5044	3336	EXCEL.EXE	69
PID 3336 wrote to memory of 4912	3336	EXCEL.EXE	70
PID 3336 wrote to memory of 4912	3336	EXCEL.EXE	70
PID 3336 wrote to memory of 3996	3336	EXCEL.EXE	71
PID 3336 wrote to memory of 3996	3336	EXCEL.EXE	71

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\cb44cb0f0e5169bcf4a7099e9970d615e885c20f8e2b8d2d07a18c808424c631.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:3336
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:5060
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:5044
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4912
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3996

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3336-120-0x00007FFDA1840000-0x00007FFDA1850000-memory.dmp

Filesize
64KB

Download
memory/3336-121-0x00007FFDA1840000-0x00007FFDA1850000-memory.dmp

Filesize
64KB

Download
memory/3336-122-0x00007FFDA1840000-0x00007FFDA1850000-memory.dmp

Filesize
64KB

Download
memory/3336-123-0x00007FFDA1840000-0x00007FFDA1850000-memory.dmp

Filesize
64KB

Download
memory/3336-132-0x00007FFD9DD80000-0x00007FFD9DD90000-memory.dmp

Filesize
64KB

Download
memory/3336-133-0x00007FFD9DD80000-0x00007FFD9DD90000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads