5c34c14865f4a98f6cc623710e445f479175aeafafcb55614b139fb61cff9de7

Analysis

max time kernel
72s
max time network
76s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
01-06-2023 10:17

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General

Target

decrypted.xlsx
Size

2.1MB
MD5

711fe9b027c5f6e0cfd51694b69da120
SHA1

b32c2e1b63aaba1103d2f9b38dfa39c6b9cc2780
SHA256

4e05084fe9a60bba11a1b0941b4264d8dbebc30be1630a06f05f86c4466b1510
SHA512

33405b40dbbae9294c3df14a22545e0ae8a9acc26cac69ea6d6e6c00138105e1fc4523352169187a1fa969a7b455eadcc35d52bb1048d365b3007722607d06ed
SSDEEP

49152:xaphEoOdnowYVpoDzFNnyKfENk1HA3p5PGeRgcT1Md3Qvpmd:Av2lapmffIka3pZlTWOpmd

Score

1^/10

Malware Config

Signatures

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

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\SOFTWARE\Microsoft\Internet Explorer\IESettingSync\SlowSettingTypesChanged = "2"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4624 EXCEL.EXE

Suspicious use of SetWindowsHookEx 15 IoCs

Processes:

EXCEL.EXE

pid	process
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE
4624	EXCEL.EXE

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\decrypted.xlsx"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4624

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

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/4624-133-0x00007FFB42DD0000-0x00007FFB42DE0000-memory.dmp

Filesize
64KB

Download
memory/4624-134-0x00007FFB42DD0000-0x00007FFB42DE0000-memory.dmp

Filesize
64KB

Download
memory/4624-135-0x00007FFB42DD0000-0x00007FFB42DE0000-memory.dmp

Filesize
64KB

Download
memory/4624-136-0x00007FFB42DD0000-0x00007FFB42DE0000-memory.dmp

Filesize
64KB

Download
memory/4624-137-0x00007FFB42DD0000-0x00007FFB42DE0000-memory.dmp

Filesize
64KB

Download
memory/4624-138-0x00007FFB40510000-0x00007FFB40520000-memory.dmp

Filesize
64KB

Download
memory/4624-139-0x00007FFB40510000-0x00007FFB40520000-memory.dmp

Filesize
64KB

Download