652536b172de840214bb5cfaf30c7e97ff072f7e3b8dfbd064a472437d6dca46

General

Target

catalog-2110884480.xls
Size

367KB
MD5

db99d7e76f6d1b8cc556e11b6c049dba
SHA1

e6b95c81ed553fc80df370cf7dbdeb38aa61f60a
SHA256

60013c87ee667dfb710c543f3bc8f1d051477b02cbcf1a3ad3960f5b44515156
SHA512

5d1231fe0aa002cb2a1f74858b5cb951c94e14133c4aa672922ce5665d4a312e8d4d21ea291611a1e019211e007de4f902a4ff419d73f61fbdcf6489332c4c58

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	2112	3984	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2072	3984	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

3984 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3984 wrote to memory of 2112	3984	EXCEL.EXE	rundll32.exe
PID 3984 wrote to memory of 2112	3984	EXCEL.EXE	rundll32.exe
PID 3984 wrote to memory of 2072	3984	EXCEL.EXE	rundll32.exe
PID 3984 wrote to memory of 2072	3984	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-2110884480.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3984

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2112

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2072

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/2072-180-0x0000000000000000-mapping.dmp

Download
memory/2112-179-0x0000000000000000-mapping.dmp

Download
memory/3984-114-0x00007FF6B2570000-0x00007FF6B5B26000-memory.dmp

Filesize
53.7MB

Download
memory/3984-115-0x00007FFB8DE80000-0x00007FFB8DE90000-memory.dmp

Filesize
64KB

Download
memory/3984-116-0x00007FFB8DE80000-0x00007FFB8DE90000-memory.dmp

Filesize
64KB

Download
memory/3984-117-0x00007FFB8DE80000-0x00007FFB8DE90000-memory.dmp

Filesize
64KB

Download
memory/3984-118-0x00007FFB8DE80000-0x00007FFB8DE90000-memory.dmp

Filesize
64KB

Download
memory/3984-121-0x00007FFB8DE80000-0x00007FFB8DE90000-memory.dmp

Filesize
64KB

Download
memory/3984-122-0x00007FFBAE940000-0x00007FFBAFA2E000-memory.dmp

Filesize
16.9MB

Download
memory/3984-123-0x00000260763D0000-0x00000260782C5000-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