89e6e635c1101a6a89d3abbb427551fd9b0c1e9695d22fa44dd480bf6026c44c

Resubmissions

28-12-2022 03:41

221228-d8w4gscd5x 10

09-04-2020 14:52

200409-4eb6rljnsx 10

Analysis

max time kernel
91s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
28-12-2022 03:41

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Report Analysis Logs

General

Target

89e6e635c1101a6a89d3abbb427551fd9b0c1e9695d22fa44dd480bf6026c44c.xls
Size

111KB
MD5

c7f273947124d844d77b7c376a9393b4
SHA1

3497bea7fbb12fa3d62fce071fdb22ca53bfbddb
SHA256

89e6e635c1101a6a89d3abbb427551fd9b0c1e9695d22fa44dd480bf6026c44c
SHA512

b44a5e25276cb98cffa8a5d815d1802e817101cf028216761efb85f65610da2af1741f549fa7738985650dda8727bb7ccc1f36e5ac8baf2fc2ec004bf2c07b0d
SSDEEP

3072:+0k3hbdlylKsgqopeJBWhZFGkE+cLax9M5QeSqA6JhzmuoVJEm9lKOXm:tk3hbdlylKsgqopeJBWhZFVE+Wax9MM9

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://samphaopet.com/wp-content/uploads/2020/02/idle/111111.png

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

WerFault.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	204	1812	WerFault.exe	EXCEL.EXE

Process spawned suspicious child process 1 IoCs

This child process is typically not spawned unless (for example) the parent process crashes. This typically indicates the parent process was unsuccessfully compromised.

Processes:

DW20.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	2924	1812	DW20.EXE	EXCEL.EXE

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

204 1812 WerFault.exe EXCEL.EXE

pid	pid_target	process	target process
204	1812	WerFault.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:

dwwin.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dwwin.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

dwwin.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dwwin.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dwwin.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1812 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

EXCEL.EXE

pid process

1812 EXCEL.EXE
1812 EXCEL.EXE
1812 EXCEL.EXE
1812 EXCEL.EXE
Suspicious use of SetWindowsHookEx 8 IoCs

Processes:

EXCEL.EXE

pid process

1812 EXCEL.EXE
1812 EXCEL.EXE
1812 EXCEL.EXE
1812 EXCEL.EXE
1812 EXCEL.EXE
1812 EXCEL.EXE
1812 EXCEL.EXE
1812 EXCEL.EXE

pid	process
1812	EXCEL.EXE

pid	process
1812	EXCEL.EXE
1812	EXCEL.EXE
1812	EXCEL.EXE
1812	EXCEL.EXE

pid	process
1812	EXCEL.EXE
1812	EXCEL.EXE
1812	EXCEL.EXE
1812	EXCEL.EXE
1812	EXCEL.EXE
1812	EXCEL.EXE
1812	EXCEL.EXE
1812	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXEDW20.EXE

description	pid	process	target process
PID 1812 wrote to memory of 2924	1812	EXCEL.EXE	DW20.EXE
PID 1812 wrote to memory of 2924	1812	EXCEL.EXE	DW20.EXE
PID 2924 wrote to memory of 4720	2924	DW20.EXE	dwwin.exe
PID 2924 wrote to memory of 4720	2924	DW20.EXE	dwwin.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\89e6e635c1101a6a89d3abbb427551fd9b0c1e9695d22fa44dd480bf6026c44c.xls"
1⤵
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE
  "C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\DW\DW20.EXE" -x -s 4228
  2⤵
  - Process spawned suspicious child process
  - Suspicious use of WriteProcessMemory
  PID:2924
- - C:\Windows\system32\dwwin.exe
    C:\Windows\system32\dwwin.exe -x -s 4228
    3⤵
    - Checks processor information in registry
    - Enumerates system info in registry
    PID:4720
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1812 -s 4516
  2⤵
  - Process spawned unexpected child process
  - Program crash
  PID:204

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 456 -p 1812 -ip 1812
1⤵
PID:1816

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/1812-138-0x00007FFF08DB0000-0x00007FFF08DC0000-memory.dmp

Filesize
64KB

Download
memory/1812-133-0x00007FFF0B3F0000-0x00007FFF0B400000-memory.dmp

Filesize
64KB

Download
memory/1812-134-0x00007FFF0B3F0000-0x00007FFF0B400000-memory.dmp

Filesize
64KB

Download
memory/1812-135-0x00007FFF0B3F0000-0x00007FFF0B400000-memory.dmp

Filesize
64KB

Download
memory/1812-136-0x00007FFF0B3F0000-0x00007FFF0B400000-memory.dmp

Filesize
64KB

Download
memory/1812-137-0x00007FFF08DB0000-0x00007FFF08DC0000-memory.dmp

Filesize
64KB

Download
memory/1812-132-0x00007FFF0B3F0000-0x00007FFF0B400000-memory.dmp

Filesize
64KB

Download
memory/2924-139-0x0000000000000000-mapping.dmp

Download
memory/2924-146-0x00007FFF0B3F0000-0x00007FFF0B400000-memory.dmp

Filesize
64KB

Download
memory/2924-147-0x00007FFF0B3F0000-0x00007FFF0B400000-memory.dmp

Filesize
64KB

Download
memory/2924-148-0x00007FFF0B3F0000-0x00007FFF0B400000-memory.dmp

Filesize
64KB

Download
memory/2924-149-0x00007FFF0B3F0000-0x00007FFF0B400000-memory.dmp

Filesize
64KB

Download
memory/4720-145-0x0000000000000000-mapping.dmp

Download