087e38ca1205d98291f529bea097466be1290b11e10d83a427268e7d14814a00

General

Target

catalog-2000669852.xls
Size

367KB
MD5

6ab06abe69c7f2a6e6265d914c1cb117
SHA1

3cb89cc4786f91518abcaa1365ee89e42a024467
SHA256

faced1e805ed68a5a43c230314111b5bb1eef77588672f9c8e4a58676a346fe2
SHA512

d15c41e6e82e2daa846ede1d8cbed0e505edf7a5d447442e848bbbb9d488033092620662af73500d27bb18a6719b857bcce1d8ceda4f2a893ab804eac345b824

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 2 IoCs

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

Processes:

rundll32.exerundll32.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	1744	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4068	1744	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

1744 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE
1744	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1744 wrote to memory of 2104	1744	EXCEL.EXE	rundll32.exe
PID 1744 wrote to memory of 2104	1744	EXCEL.EXE	rundll32.exe
PID 1744 wrote to memory of 4068	1744	EXCEL.EXE	rundll32.exe
PID 1744 wrote to memory of 4068	1744	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\catalog-2000669852.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2104

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4068

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

Replay Monitor

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Downloads

memory/1744-114-0x00007FF7A2550000-0x00007FF7A5B06000-memory.dmp

Filesize
53.7MB

Download
memory/1744-115-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/1744-116-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/1744-117-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/1744-118-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/1744-121-0x00007FF844E20000-0x00007FF845F0E000-memory.dmp

Filesize
16.9MB

Download
memory/1744-122-0x00007FF824490000-0x00007FF8244A0000-memory.dmp

Filesize
64KB

Download
memory/1744-123-0x00007FF842F20000-0x00007FF844E15000-memory.dmp

Filesize
31.0MB

Download
memory/2104-179-0x0000000000000000-mapping.dmp

Download
memory/4068-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads