50f5316c84df540350104b16bed310b39f26ea082114e95c47f042619ddebb40

Analysis

max time kernel
146s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
03/01/2023, 03:26

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General

Target

1c5f2ca9839078742383b207721ce92fdfa70ac50e5d7b73c2488d47f7e5ebac.xls
Size

255KB
MD5

893f9b10a48073fc3fa0d5c8867f7200
SHA1

875d63ddc7467890f8f72aa787298ca4b2051e3e
SHA256

1c5f2ca9839078742383b207721ce92fdfa70ac50e5d7b73c2488d47f7e5ebac
SHA512

8c65c4f8c89d5b6e973f2108cb4267cf3f6703609d84be6d4fda7b92770d462344c957e6fbc7a00e24076bbe2dc51bfe68ed80e5685ff985a01772edca5de632
SSDEEP

6144:6Kpb8rGYrMPe3q7Q0XV5xtuEsi8/dgVNiwrfx9rNFMMrttRzV5Dz3UxqC8LUcST:5NbDjP9XH5XIqZLnST

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://cs.com.sg/Backup/Bk778kXNKMiH5vH/

xlm40.dropper

https://j2ccamionmagasin.fr/css/1Mp8y/

xlm40.dropper

http://atici.net/old/PkZI74DD/

xlm40.dropper

http://clanbaker.org/css/khhl7kT2n69n/

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	1640	2268	regsvr32.exe	79
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4432	2268	regsvr32.exe	79
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1028	2268	regsvr32.exe	79
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	484	2268	regsvr32.exe	79

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
2268	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE
2268	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 1640	2268	EXCEL.EXE	83
PID 2268 wrote to memory of 1640	2268	EXCEL.EXE	83
PID 2268 wrote to memory of 4432	2268	EXCEL.EXE	84
PID 2268 wrote to memory of 4432	2268	EXCEL.EXE	84
PID 2268 wrote to memory of 1028	2268	EXCEL.EXE	85
PID 2268 wrote to memory of 1028	2268	EXCEL.EXE	85
PID 2268 wrote to memory of 484	2268	EXCEL.EXE	86
PID 2268 wrote to memory of 484	2268	EXCEL.EXE	86

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\1c5f2ca9839078742383b207721ce92fdfa70ac50e5d7b73c2488d47f7e5ebac.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:1640
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4432
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:1028
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:484

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/2268-135-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/2268-136-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/2268-137-0x00007FFCA0730000-0x00007FFCA0740000-memory.dmp

Filesize
64KB

Download
memory/2268-138-0x00007FFCA0730000-0x00007FFCA0740000-memory.dmp

Filesize
64KB

Download
memory/2268-132-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/2268-134-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/2268-133-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/2268-145-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/2268-146-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/2268-144-0x00007FFCA2C70000-0x00007FFCA2C80000-memory.dmp

Filesize
64KB

Download
memory/2268-147-0x00007FFCA2C70000-0x00007FFCA2C80000-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