fa75ad49ae3f01c066c035c79098f15915375e8ead1840bee03cb16fafd98425

General

Target

document-1851347184.xls
Size

39KB
MD5

8a90be28fd5b15dac37b54acf61257dd
SHA1

e7e8c7afa5b6912cfbef5813b54561f5c4cdc222
SHA256

fa75ad49ae3f01c066c035c79098f15915375e8ead1840bee03cb16fafd98425
SHA512

5e2eb198ca5cae3a7d314c0f4cfd6c61d5114a5737bfe4379bd0225f2cb21ad00b20b9c0443ab61bb8b6c208e4a3ff42a4c2d65832909c7fabaadfebb516f950

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

rundll32.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	3172	4052	rundll32.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:

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

4052 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4052	EXCEL.EXE
4052	EXCEL.EXE
4052	EXCEL.EXE
4052	EXCEL.EXE
4052	EXCEL.EXE
4052	EXCEL.EXE
4052	EXCEL.EXE
4052	EXCEL.EXE
4052	EXCEL.EXE
4052	EXCEL.EXE
4052	EXCEL.EXE
4052	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4052 wrote to memory of 3172	4052	EXCEL.EXE	rundll32.exe
PID 4052 wrote to memory of 3172	4052	EXCEL.EXE	rundll32.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\document-1851347184.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4052

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\fkruf.djr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3172

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/3172-7-0x0000000000000000-mapping.dmp

Download
memory/4052-2-0x00007FFE0C220000-0x00007FFE0C230000-memory.dmp

Filesize
64KB

Download
memory/4052-3-0x00007FFE0C220000-0x00007FFE0C230000-memory.dmp

Filesize
64KB

Download
memory/4052-4-0x00007FFE0C220000-0x00007FFE0C230000-memory.dmp

Filesize
64KB

Download
memory/4052-5-0x00007FFE0C220000-0x00007FFE0C230000-memory.dmp

Filesize
64KB

Download
memory/4052-6-0x00007FFE2FB40000-0x00007FFE30177000-memory.dmp

Filesize
6.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads