8471ba21698163c769ff0fb55babf56f7d586c1c01dcc6914f1a17c53f91cf39

General

Target

catalog-2002253741.xls
Size

367KB
MD5

d3fbb2486b3effa30f87eb8eec28929b
SHA1

0b9e5f64275f6e5cd5d6efe23979dd7dceac9667
SHA256

022b64e1a59eb7c5dfbac86cca9b1c98403a1547e96d9a5529a5eb7d958b810d
SHA512

a9f4d6cecd20ea415aa6ef7d54b50976d8443d7fcb8c5e48b9d782a533a49f4a1fb9d1bc0aaaa00dbcf4a00bc2321a38fb7dbdc8f3b0a8eb01a946e41f2c091d

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	3916	1108	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3568	1108	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

1108 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

1108 EXCEL.EXE
1108 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE
1108	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1108 wrote to memory of 3916	1108	EXCEL.EXE	rundll32.exe
PID 1108 wrote to memory of 3916	1108	EXCEL.EXE	rundll32.exe
PID 1108 wrote to memory of 3568	1108	EXCEL.EXE	rundll32.exe
PID 1108 wrote to memory of 3568	1108	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-2002253741.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1108

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3916

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3568

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/1108-114-0x00007FF678380000-0x00007FF67B936000-memory.dmp

Filesize
53.7MB

Download
memory/1108-115-0x00007FFAB7550000-0x00007FFAB7560000-memory.dmp

Filesize
64KB

Download
memory/1108-116-0x00007FFAB7550000-0x00007FFAB7560000-memory.dmp

Filesize
64KB

Download
memory/1108-117-0x00007FFAB7550000-0x00007FFAB7560000-memory.dmp

Filesize
64KB

Download
memory/1108-118-0x00007FFAB7550000-0x00007FFAB7560000-memory.dmp

Filesize
64KB

Download
memory/1108-119-0x00007FFAB7550000-0x00007FFAB7560000-memory.dmp

Filesize
64KB

Download
memory/1108-122-0x00007FFAD8180000-0x00007FFAD926E000-memory.dmp

Filesize
16.9MB

Download
memory/1108-123-0x0000016B3ED40000-0x0000016B40C35000-memory.dmp

Filesize
31.0MB

Download
memory/3568-180-0x0000000000000000-mapping.dmp

Download
memory/3916-179-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads