02f1bb09eff0e5fce078db68f72a22a17f7f8941b25f7c940ab06ee69db67bb9

General

Target

catalog-239708874.xls
Size

367KB
MD5

13875f29b7ba280e14e6610b11fdcddf
SHA1

48eeb3ed3fb29c9aaf4298c8f3eff4ebda75acd3
SHA256

a01617633840effc51c537ad85e4d98a3e436a93048d8b65d6847dac5db3f669
SHA512

8caecae1bb82dff9e7d106130881ddf5506dc778903def5fc2bcb696d830350413365410afb4895c1d45e16a88adce6582da51b375275c97ca65e97bd535c576

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	3948	3016	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2296	3016	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3016 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE
3016	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3016 wrote to memory of 3948	3016	EXCEL.EXE	rundll32.exe
PID 3016 wrote to memory of 3948	3016	EXCEL.EXE	rundll32.exe
PID 3016 wrote to memory of 2296	3016	EXCEL.EXE	rundll32.exe
PID 3016 wrote to memory of 2296	3016	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-239708874.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3016

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3948

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2296

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

Replay Monitor

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Downloads

memory/2296-180-0x0000000000000000-mapping.dmp

Download
memory/3016-114-0x00007FF72F090000-0x00007FF732646000-memory.dmp

Filesize
53.7MB

Download
memory/3016-115-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3016-116-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3016-118-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3016-117-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3016-122-0x00007FFDCA390000-0x00007FFDCA3A0000-memory.dmp

Filesize
64KB

Download
memory/3016-121-0x00007FFDEAD10000-0x00007FFDEBDFE000-memory.dmp

Filesize
16.9MB

Download
memory/3016-123-0x000001CD6C640000-0x000001CD6E535000-memory.dmp

Filesize
31.0MB

Download
memory/3948-179-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads