71c7536a10c7233f2b7854681f1a1d6a8d90b8bbd53a564981be8b584b700ec0

Analysis

max time kernel
125s
max time network
143s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
03/11/2022, 16:58

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General

Target

71c7536a10c7233f2b7854681f1a1d6a8d90b8bbd53a564981be8b584b700ec0.xls
Size

217KB
MD5

3745f6ea8f881e0324d8ddb316ab750e
SHA1

1d1ae8ddfee01d5351cc425225e8cd98c68aeb2d
SHA256

71c7536a10c7233f2b7854681f1a1d6a8d90b8bbd53a564981be8b584b700ec0
SHA512

d5e6995df157063c986db6d6a3700a834774695b41d062ef9f1d62fa41e350438a0eaf30cae3f801dd5708e02ffd19151407aff8262d6d636d68a85641f55cfd
SSDEEP

6144:OKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgIyY+TAQXTHGUMEyP5p6f5jQmH:bbGUMVWlbH

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	2320	2896	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4248	2896	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4460	2896	regsvr32.exe	65
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3148	2896	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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
2896	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
2896	EXCEL.EXE
2896	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2896	EXCEL.EXE
2896	EXCEL.EXE
2896	EXCEL.EXE
2896	EXCEL.EXE
2896	EXCEL.EXE
2896	EXCEL.EXE
2896	EXCEL.EXE
2896	EXCEL.EXE
2896	EXCEL.EXE
2896	EXCEL.EXE
2896	EXCEL.EXE
2896	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 2320	2896	EXCEL.EXE	68
PID 2896 wrote to memory of 2320	2896	EXCEL.EXE	68
PID 2896 wrote to memory of 4248	2896	EXCEL.EXE	69
PID 2896 wrote to memory of 4248	2896	EXCEL.EXE	69
PID 2896 wrote to memory of 4460	2896	EXCEL.EXE	70
PID 2896 wrote to memory of 4460	2896	EXCEL.EXE	70
PID 2896 wrote to memory of 3148	2896	EXCEL.EXE	71
PID 2896 wrote to memory of 3148	2896	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\71c7536a10c7233f2b7854681f1a1d6a8d90b8bbd53a564981be8b584b700ec0.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:2896
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:2320
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4248
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4460
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:3148

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/2896-122-0x00007FFF38D60000-0x00007FFF38D70000-memory.dmp

Filesize
64KB

Download
memory/2896-121-0x00007FFF38D60000-0x00007FFF38D70000-memory.dmp

Filesize
64KB

Download
memory/2896-119-0x00007FFF38D60000-0x00007FFF38D70000-memory.dmp

Filesize
64KB

Download
memory/2896-131-0x00007FFF36210000-0x00007FFF36220000-memory.dmp

Filesize
64KB

Download
memory/2896-132-0x00007FFF36210000-0x00007FFF36220000-memory.dmp

Filesize
64KB

Download
memory/2896-120-0x00007FFF38D60000-0x00007FFF38D70000-memory.dmp

Filesize
64KB

Download
memory/2896-297-0x00007FFF38D60000-0x00007FFF38D70000-memory.dmp

Filesize
64KB

Download
memory/2896-298-0x00007FFF38D60000-0x00007FFF38D70000-memory.dmp

Filesize
64KB

Download
memory/2896-299-0x00007FFF38D60000-0x00007FFF38D70000-memory.dmp

Filesize
64KB

Download
memory/2896-300-0x00007FFF38D60000-0x00007FFF38D70000-memory.dmp

Filesize
64KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads