bbe55ad9ab076f6ae50552240c46d1bcbe45f1f9adf57b0ff81b256bf32ad019

Analysis

max time kernel
149s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20230221-en
resource tags

arch:x64arch:x86image:win10v2004-20230221-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2023 12:16

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General

Target

bbe55ad9ab076f6ae50552240c46d1bcbe45f1f9adf57b0ff81b256bf32ad019.xls
Size

2.2MB
MD5

a9aec8056f2243be76bc5bfe6390357c
SHA1

78aff86b95ccfb12370a7e7c32d7b51a7660d254
SHA256

bbe55ad9ab076f6ae50552240c46d1bcbe45f1f9adf57b0ff81b256bf32ad019
SHA512

3b3fa205dff1a086adef9c9c06f4f75a73c671be87ba1db72777d62974f138513fc2e393f5d520e6801326fda5de21de0951138dcdff1be4cc409ee48ee30348
SSDEEP

24576:ARUVoGjlKPzeY/h85YBI1nYYBNBMO0ehTzB0s3oWjh4yZGdbecYAq0sfMPpFjpKn:wUNjQrzZ8r5lHBr3B0sNVoelt0sfa

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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1968 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE
1968	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1968 wrote to memory of 3904	1968	EXCEL.EXE	splwow64.exe
PID 1968 wrote to memory of 3904	1968	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\bbe55ad9ab076f6ae50552240c46d1bcbe45f1f9adf57b0ff81b256bf32ad019.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1968

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:3904

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:1664

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/1968-133-0x00007FFF4DD30000-0x00007FFF4DD40000-memory.dmp

Filesize
64KB

Download
memory/1968-134-0x00007FFF4DD30000-0x00007FFF4DD40000-memory.dmp

Filesize
64KB

Download
memory/1968-135-0x00007FFF4DD30000-0x00007FFF4DD40000-memory.dmp

Filesize
64KB

Download
memory/1968-136-0x00007FFF4DD30000-0x00007FFF4DD40000-memory.dmp

Filesize
64KB

Download
memory/1968-137-0x00007FFF4DD30000-0x00007FFF4DD40000-memory.dmp

Filesize
64KB

Download
memory/1968-138-0x00007FFF4B530000-0x00007FFF4B540000-memory.dmp

Filesize
64KB

Download
memory/1968-139-0x00007FFF4B530000-0x00007FFF4B540000-memory.dmp

Filesize
64KB

Download
memory/1968-173-0x00000280225F0000-0x00000280227F0000-memory.dmp

Filesize
2.0MB

Download
memory/1968-228-0x00000280225F0000-0x00000280227F0000-memory.dmp

Filesize
2.0MB

Download