d17c80ce98ebb5a38515037bd46139d266e4401e1e25397f73ad45f189f71ab9

General

Target

catalog-274364496.xls
Size

367KB
MD5

f0f92443dacd00b77a37bdb99a1dd2e1
SHA1

2b70762d907e2a0a8bcb0bbac2a9a8984efa85b6
SHA256

89df69810b92821f2f69889b6d41f00946d5f26535d5e7508ecdea1048652828
SHA512

ec19837d49f741dc0edfb2743bd6c153ecd6a0239562c985c42b1d6d8f82812026c0b6a5bc931a8bbf1de82063f14e98a70e91334ecc6c1f94158c91f5b7ccdc

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	1820	4008	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3176	4008	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

4008 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE
4008	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4008 wrote to memory of 1820	4008	EXCEL.EXE	rundll32.exe
PID 4008 wrote to memory of 1820	4008	EXCEL.EXE	rundll32.exe
PID 4008 wrote to memory of 3176	4008	EXCEL.EXE	rundll32.exe
PID 4008 wrote to memory of 3176	4008	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-274364496.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4008

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1820

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3176

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/1820-179-0x0000000000000000-mapping.dmp

Download
memory/3176-180-0x0000000000000000-mapping.dmp

Download
memory/4008-114-0x00007FF670F10000-0x00007FF6744C6000-memory.dmp

Filesize
53.7MB

Download
memory/4008-115-0x00007FFF77040000-0x00007FFF77050000-memory.dmp

Filesize
64KB

Download
memory/4008-116-0x00007FFF77040000-0x00007FFF77050000-memory.dmp

Filesize
64KB

Download
memory/4008-118-0x00007FFF77040000-0x00007FFF77050000-memory.dmp

Filesize
64KB

Download
memory/4008-117-0x00007FFF77040000-0x00007FFF77050000-memory.dmp

Filesize
64KB

Download
memory/4008-121-0x00007FFF97800000-0x00007FFF988EE000-memory.dmp

Filesize
16.9MB

Download
memory/4008-122-0x00007FFF77040000-0x00007FFF77050000-memory.dmp

Filesize
64KB

Download
memory/4008-123-0x00000211BAE70000-0x00000211BCD65000-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