b0c52fae66a3490bd28cb077420e45ee50214ffcf7a00b3ca332d6f363d3bf4e

Resubmissions

19-05-2022 10:07

220519-l56gradhe5 10

18-05-2022 15:00

220518-sdapbsdgdn 10

Analysis

max time kernel
149s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
19-05-2022 10:07

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General

Target

L2936218686.xls
Size

264KB
MD5

0591c224535324764081eb46a7f64ddf
SHA1

968a0a2e24c32e52e7a0fb2942a95a6a742c77ae
SHA256

b0c52fae66a3490bd28cb077420e45ee50214ffcf7a00b3ca332d6f363d3bf4e
SHA512

8f74da37c54272b03b8c17aa6243352e11771a42cbd36a4a828079c9fccc4fc1f8d3c816f9bacfc0caf0edb6dd4140eb0b8d1c21d991a948f32bd46a3793f6f9

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://mi-xiaomi.live/yTiN2JL7/K.png

xlm40.dropper

https://dev.apb.com.la/S1dBTV1yT/K.png

xlm40.dropper

https://assamcareer.news/PCYxZBpbfwN/K.png

Signatures

Process spawned unexpected child process 3 IoCs

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

Processes:

regsvr32.exeregsvr32.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	4448	2672	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4908	2672	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2104	2672	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 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

Processes:

EXCEL.EXE

pid process

2672 EXCEL.EXE

Suspicious use of SetWindowsHookEx 18 IoCs

Processes:

EXCEL.EXE

pid	process
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE
2672	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2672 wrote to memory of 4448	2672	EXCEL.EXE	regsvr32.exe
PID 2672 wrote to memory of 4448	2672	EXCEL.EXE	regsvr32.exe
PID 2672 wrote to memory of 4908	2672	EXCEL.EXE	regsvr32.exe
PID 2672 wrote to memory of 4908	2672	EXCEL.EXE	regsvr32.exe
PID 2672 wrote to memory of 2104	2672	EXCEL.EXE	regsvr32.exe
PID 2672 wrote to memory of 2104	2672	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\L2936218686.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2672

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 C:\Uduw\soam1.dll
2⤵
- Process spawned unexpected child process
PID:4448

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 C:\Uduw\soam2.dll
2⤵
- Process spawned unexpected child process
PID:4908

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 C:\Uduw\soam3.dll
2⤵
- Process spawned unexpected child process
PID:2104

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

Replay Monitor

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Downloads

memory/2104-139-0x0000000000000000-mapping.dmp

Download
memory/2672-130-0x00007FF92C6D0000-0x00007FF92C6E0000-memory.dmp

Filesize
64KB

Download
memory/2672-131-0x00007FF92C6D0000-0x00007FF92C6E0000-memory.dmp

Filesize
64KB

Download
memory/2672-132-0x00007FF92C6D0000-0x00007FF92C6E0000-memory.dmp

Filesize
64KB

Download
memory/2672-133-0x00007FF92C6D0000-0x00007FF92C6E0000-memory.dmp

Filesize
64KB

Download
memory/2672-134-0x00007FF92C6D0000-0x00007FF92C6E0000-memory.dmp

Filesize
64KB

Download
memory/2672-135-0x00007FF929D70000-0x00007FF929D80000-memory.dmp

Filesize
64KB

Download
memory/2672-136-0x00007FF929D70000-0x00007FF929D80000-memory.dmp

Filesize
64KB

Download
memory/4448-137-0x0000000000000000-mapping.dmp

Download
memory/4908-138-0x0000000000000000-mapping.dmp

Download