cb803db868c5c9ca9afb6beabace8d8d56b8aaea584f6d7abe880c649b89cca5

General

Target

catalog-2092391987.xls
Size

367KB
MD5

bfba956a0060db4b1652555e49f4d4dd
SHA1

04136e538857dd4f6b51e34e4832ee74a35b145c
SHA256

27aee427afe05cfcda720658b55944a935bedb3023f8ab3e214d5e32a01b737b
SHA512

2176fc7a1f709cc9f20da2d76d813428ee222c2f4665a287a550872c992d1272800ae644b7cb30c22781dfcba4d7f7faa4c194e22201103e975ecb3518f2b285

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	1636	3924	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2344	3924	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

3924 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE
3924	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3924 wrote to memory of 1636	3924	EXCEL.EXE	rundll32.exe
PID 3924 wrote to memory of 1636	3924	EXCEL.EXE	rundll32.exe
PID 3924 wrote to memory of 2344	3924	EXCEL.EXE	rundll32.exe
PID 3924 wrote to memory of 2344	3924	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-2092391987.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3924

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1636

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2344

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/1636-179-0x0000000000000000-mapping.dmp

Download
memory/2344-180-0x0000000000000000-mapping.dmp

Download
memory/3924-114-0x00007FF6EBCA0000-0x00007FF6EF256000-memory.dmp

Filesize
53.7MB

Download
memory/3924-115-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3924-116-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3924-117-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3924-118-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3924-121-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3924-122-0x00007FFDEAAC0000-0x00007FFDEBBAE000-memory.dmp

Filesize
16.9MB

Download
memory/3924-123-0x000001DCA0420000-0x000001DCA2315000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads