ff331c896df1022e7705d08f551f4ee9c2d00649f7f510574e2f8890283ab432

General

Target

SecuriteInfo.com.Heur.6369.23894.xls
Size

192KB
MD5

4a07fe1ffedc118fe9cdecd5ba9fece4
SHA1

913225e8325d2017931b6e144b02b0929733a0e3
SHA256

ff331c896df1022e7705d08f551f4ee9c2d00649f7f510574e2f8890283ab432
SHA512

2384ba348b28c4e2712e5bc61a13005c4ed11525c92eb44468b56f7312a04880eefadd0c21a36b2e3b5e5515e0989b9b7552c26f5c46d205585c484b72f29ad0

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	2104	540	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

540 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE
540	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description pid process target process

PID 540 wrote to memory of 2104 540 EXCEL.EXE rundll32.exe
PID 540 wrote to memory of 2104 540 EXCEL.EXE rundll32.exe

description	pid	process	target process
PID 540 wrote to memory of 2104	540	EXCEL.EXE	rundll32.exe
PID 540 wrote to memory of 2104	540	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\SecuriteInfo.com.Heur.6369.23894.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:540

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Frost.bitte,DllRegisterServer1
2⤵
- Process spawned unexpected child process
PID:2104

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/540-2-0x00007FF983B50000-0x00007FF983B60000-memory.dmp

Filesize
64KB

Download
memory/540-3-0x00007FF983B50000-0x00007FF983B60000-memory.dmp

Filesize
64KB

Download
memory/540-4-0x00007FF983B50000-0x00007FF983B60000-memory.dmp

Filesize
64KB

Download
memory/540-5-0x00007FF9A7130000-0x00007FF9A7767000-memory.dmp

Filesize
6.2MB

Download
memory/540-6-0x00007FF983B50000-0x00007FF983B60000-memory.dmp

Filesize
64KB

Download
memory/2104-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads