Behavioral Report

Analysis

max time kernel
35s
max time network
39s
platform
windows10-1703_x64
resource
win10-20220901-en
resource tags

arch:x64arch:x86image:win10-20220901-enlocale:en-usos:windows10-1703-x64system
submitted
25-01-2023 11:02

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Report Files Registry Network Processes Mutex Misc

General

Target

Form.xls
Size

91KB
MD5

40b76012b8b6529ecf8351125ac25173
SHA1

f9daf8fefcf0013c84a67fb0d1f8b6c9310d8165
SHA256

e43a3e22c345838254d967e5523d858e4049018eaee4f1ab5bfc8467c62e17ab
SHA512

c2dc3c35a809dd3d151660079cf2ba01fb2be917236dc2bc1c1134b9327cebd21e3195b6964f639e7e09975844e8a0cc3cb5e8e87481e92a11140bbf0ddf4061
SSDEEP

1536:eKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg4bCXuZH4gb4CEn9J4ZTrX:eKpb8rGYrMPe3q7Q0XV5xtezEsi8/dg8

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.vinyz.com/cache/rqWV/

xlm40.dropper

http://yuanliao.raluking.com/1eq5o7/gHrTM8YilZz0quKt/

xlm40.dropper

https://akarweb.net/cgi-bin/CL13tGXI/

xlm40.dropper

http://www.bdbg.es/css/DDm7o71vWtTs/

Signatures

Process spawned unexpected child process 4 IoCs

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

Processes:

regsvr32.exeregsvr32.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	3972	1532	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4720	1532	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4660	1532	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4596	1532	regsvr32.exe	EXCEL.EXE

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

TTPs:

Query Registry System Information Discovery

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

TTPs:

Query Registry System Information Discovery

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

1532 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1532 EXCEL.EXE
1532 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE
1532	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1532 wrote to memory of 3972	1532	EXCEL.EXE	regsvr32.exe
PID 1532 wrote to memory of 3972	1532	EXCEL.EXE	regsvr32.exe
PID 1532 wrote to memory of 4720	1532	EXCEL.EXE	regsvr32.exe
PID 1532 wrote to memory of 4720	1532	EXCEL.EXE	regsvr32.exe
PID 1532 wrote to memory of 4660	1532	EXCEL.EXE	regsvr32.exe
PID 1532 wrote to memory of 4660	1532	EXCEL.EXE	regsvr32.exe
PID 1532 wrote to memory of 4596	1532	EXCEL.EXE	regsvr32.exe
PID 1532 wrote to memory of 4596	1532	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\Form.xls"

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:1532

C:\Windows\System32\regsvr32.exe

C:\Windows\System32\regsvr32.exe /S ..\elv1.ooocccxxx

Process spawned unexpected child process

PID:3972

C:\Windows\System32\regsvr32.exe

C:\Windows\System32\regsvr32.exe /S ..\elv2.ooocccxxx

Process spawned unexpected child process

PID:4720

C:\Windows\System32\regsvr32.exe

C:\Windows\System32\regsvr32.exe /S ..\elv3.ooocccxxx

Process spawned unexpected child process

PID:4660

C:\Windows\System32\regsvr32.exe

C:\Windows\System32\regsvr32.exe /S ..\elv4.ooocccxxx

Process spawned unexpected child process

PID:4596

Network

MITRE ATT&CK Matrix

Collection

Command and Control

Credential Access

Defense Evasion

Discovery

Query Registry

T1012

System Information Discovery

T1082

Execution

Exfiltration

Impact

Initial Access

Lateral Movement

Persistence

Privilege Escalation

Replay Monitor

00:00 00:00

Downloads

C:\Users\Admin\elv2.ooocccxxx
Filesize
8KB

MD5
b30db89a08a31c8747a5a191cb449f71

SHA1
e2a46f963bd29b791a8fd45f06eba2681f02fd90

SHA256
2827c35c694336607536bc3439e4e28a5ead21722452dceebfde730f2a445e67

SHA512
0fd71e4f61c339cd9d2d803449e763562da525dbc75f55cbcdc85d15f5f032c95c22628e8d5bcd811b43522b44b2e0e29ace44023a1690ea3153345a9b1f2cd1

Download Submit
memory/1532-120-0x00007FFF48C50000-0x00007FFF48C60000-memory.dmp

Filesize
64KB

Download
memory/1532-121-0x00007FFF48C50000-0x00007FFF48C60000-memory.dmp

Filesize
64KB

Download
memory/1532-122-0x00007FFF48C50000-0x00007FFF48C60000-memory.dmp

Filesize
64KB

Download
memory/1532-123-0x00007FFF48C50000-0x00007FFF48C60000-memory.dmp

Filesize
64KB

Download
memory/1532-132-0x00007FFF45D20000-0x00007FFF45D30000-memory.dmp

Filesize
64KB

Download
memory/1532-133-0x00007FFF45D20000-0x00007FFF45D30000-memory.dmp

Filesize
64KB

Download
memory/3972-254-0x0000000000000000-mapping.dmp

Download
memory/4596-266-0x0000000000000000-mapping.dmp

Download
memory/4660-264-0x0000000000000000-mapping.dmp

Download
memory/4720-258-0x0000000000000000-mapping.dmp

Download