b5ca98aaf7acc12175fda388247d7898d815a8091ede0f30dfe952d26b1739c0

Analysis

max time kernel
118s
max time network
141s
platform
windows10_x64
resource
win10v20210410
submitted
10-05-2021 06:31

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General

Target

PO.xls
Size

60KB
MD5

bef0d1e9c66a0ae35a1e0ca747bdad15
SHA1

36480210715a4c038d21b071b7f89508fef80c20
SHA256

b5ca98aaf7acc12175fda388247d7898d815a8091ede0f30dfe952d26b1739c0
SHA512

196d949a020a03d1ec83c7c6a39c12efcf1ffe7e7663b7100868393ae44d8e0283d581378d523e2d956d7bd7b2035a3727c6c94f3611b6da106786d5b20e7bfc

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 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

512 EXCEL.EXE
Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

EXCEL.EXE

pid process

512 EXCEL.EXE
512 EXCEL.EXE
512 EXCEL.EXE
512 EXCEL.EXE
512 EXCEL.EXE
512 EXCEL.EXE
512 EXCEL.EXE
512 EXCEL.EXE
512 EXCEL.EXE
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 512 wrote to memory of 3572 512 EXCEL.EXE splwow64.exe
PID 512 wrote to memory of 3572 512 EXCEL.EXE splwow64.exe

pid	process
512	EXCEL.EXE

pid	process
512	EXCEL.EXE
512	EXCEL.EXE
512	EXCEL.EXE
512	EXCEL.EXE
512	EXCEL.EXE
512	EXCEL.EXE
512	EXCEL.EXE
512	EXCEL.EXE
512	EXCEL.EXE

description	pid	process	target process
PID 512 wrote to memory of 3572	512	EXCEL.EXE	splwow64.exe
PID 512 wrote to memory of 3572	512	EXCEL.EXE	splwow64.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\PO.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:512

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:3572

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/512-114-0x00007FF629C00000-0x00007FF62D1B6000-memory.dmp

Filesize
53.7MB

Download
memory/512-115-0x00007FF949B80000-0x00007FF949B90000-memory.dmp

Filesize
64KB

Download
memory/512-116-0x00007FF949B80000-0x00007FF949B90000-memory.dmp

Filesize
64KB

Download
memory/512-117-0x00007FF949B80000-0x00007FF949B90000-memory.dmp

Filesize
64KB

Download
memory/512-118-0x00007FF949B80000-0x00007FF949B90000-memory.dmp

Filesize
64KB

Download
memory/512-122-0x00007FF949B80000-0x00007FF949B90000-memory.dmp

Filesize
64KB

Download
memory/512-121-0x00007FF96A440000-0x00007FF96B52E000-memory.dmp

Filesize
16.9MB

Download
memory/512-123-0x000001E730D40000-0x000001E732C35000-memory.dmp

Filesize
31.0MB

Download
memory/3572-179-0x0000000000000000-mapping.dmp

Download