922520afad47b7bcc199d8d2dd44f79cbadc913c5e2fd8d0287ce892d731f8c0

Analysis

max time kernel
184s
max time network
193s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 14:41

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General

Target

922520AFAD47B7BCC199D8D2DD44F79CBADC913C5E2FD8D0287CE892D731F8C0.xls
Size

91KB
MD5

472201a6154fd3e1271543e6f1b3b509
SHA1

fc4a953cf231ca7bd5bde2a260fd74441ceadd3e
SHA256

922520afad47b7bcc199d8d2dd44f79cbadc913c5e2fd8d0287ce892d731f8c0
SHA512

a8cda477a2ca2f89afd5250bbad952bd5c5086fe5b28d8f243750f08adb45c06295dbe7ab9d58df5995efebf4c7cc0ccdea61fa203c1cc21c786bede715ae8e0
SSDEEP

1536:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgEbCXuZH4gb4CEn9J4ZcEM:LKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg1

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.muyehuayi.com/cmp/8asA99KPsyA/v6lUsWbLen/

xlm40.dropper

http://concivilpa.com.py/wp-admin/i3CQu9dzDrMW/

xlm40.dropper

https://wijsneusmedia.nl/cgi-bin/kFB/

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

regsvr32.exeregsvr32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3612	1692	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3084	1692	regsvr32.exe	EXCEL.EXE

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid process

1692 EXCEL.EXE
Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

EXCEL.EXE

pid process

1692 EXCEL.EXE
1692 EXCEL.EXE
1692 EXCEL.EXE
1692 EXCEL.EXE
1692 EXCEL.EXE
1692 EXCEL.EXE
1692 EXCEL.EXE
1692 EXCEL.EXE
1692 EXCEL.EXE

pid	process
1692	EXCEL.EXE

pid	process
1692	EXCEL.EXE
1692	EXCEL.EXE
1692	EXCEL.EXE
1692	EXCEL.EXE
1692	EXCEL.EXE
1692	EXCEL.EXE
1692	EXCEL.EXE
1692	EXCEL.EXE
1692	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1692 wrote to memory of 3612	1692	EXCEL.EXE	regsvr32.exe
PID 1692 wrote to memory of 3612	1692	EXCEL.EXE	regsvr32.exe
PID 1692 wrote to memory of 3084	1692	EXCEL.EXE	regsvr32.exe
PID 1692 wrote to memory of 3084	1692	EXCEL.EXE	regsvr32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\922520AFAD47B7BCC199D8D2DD44F79CBADC913C5E2FD8D0287CE892D731F8C0.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1692

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx
2⤵
- Process spawned unexpected child process
PID:3612

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx
2⤵
- Process spawned unexpected child process
PID:3084

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1692-132-0x00007FFB8CBB0000-0x00007FFB8CBC0000-memory.dmp

Filesize
64KB

Download
memory/1692-133-0x00007FFB8CBB0000-0x00007FFB8CBC0000-memory.dmp

Filesize
64KB

Download
memory/1692-134-0x00007FFB8CBB0000-0x00007FFB8CBC0000-memory.dmp

Filesize
64KB

Download
memory/1692-135-0x00007FFB8CBB0000-0x00007FFB8CBC0000-memory.dmp

Filesize
64KB

Download
memory/1692-136-0x00007FFB8CBB0000-0x00007FFB8CBC0000-memory.dmp

Filesize
64KB

Download
memory/1692-137-0x00007FFB8A520000-0x00007FFB8A530000-memory.dmp

Filesize
64KB

Download
memory/1692-138-0x00007FFB8A520000-0x00007FFB8A530000-memory.dmp

Filesize
64KB

Download
memory/3084-140-0x0000000000000000-mapping.dmp

Download
memory/3612-139-0x0000000000000000-mapping.dmp

Download