5fa3dd7b3ce99c0871bb5d8ca71d9913c9d357632f4a4350846c91159574ccbf

General

Target

catalog-216235674.xls
Size

367KB
MD5

6bded2a6b0a1b9ec13b5f8180f6b12fb
SHA1

02420d9db0fa0c06a3b330ed828d42a2bfd7a147
SHA256

3d346e6c15d0d025ec9fc4b3857625fef81f24e6b924baff7c5372d0eb378112
SHA512

58c50e9bb4efc69ffdbe6198eb7747ff6c2358c100f97ce4e3e2bc89660459fde30de03851a69e36a2b781a02ca62c168c2799b01efae85859230d93c7932bd0

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	3200	740	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2300	740	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

740 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE
740	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 740 wrote to memory of 3200	740	EXCEL.EXE	rundll32.exe
PID 740 wrote to memory of 3200	740	EXCEL.EXE	rundll32.exe
PID 740 wrote to memory of 2300	740	EXCEL.EXE	rundll32.exe
PID 740 wrote to memory of 2300	740	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-216235674.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:740

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3200

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2300

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

Replay Monitor

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Downloads

memory/740-114-0x00007FF785550000-0x00007FF788B06000-memory.dmp

Filesize
53.7MB

Download
memory/740-115-0x00007FFCEFED0000-0x00007FFCEFEE0000-memory.dmp

Filesize
64KB

Download
memory/740-116-0x00007FFCEFED0000-0x00007FFCEFEE0000-memory.dmp

Filesize
64KB

Download
memory/740-117-0x00007FFCEFED0000-0x00007FFCEFEE0000-memory.dmp

Filesize
64KB

Download
memory/740-118-0x00007FFCEFED0000-0x00007FFCEFEE0000-memory.dmp

Filesize
64KB

Download
memory/740-121-0x00007FFCEFED0000-0x00007FFCEFEE0000-memory.dmp

Filesize
64KB

Download
memory/740-122-0x00007FFD10830000-0x00007FFD1191E000-memory.dmp

Filesize
16.9MB

Download
memory/740-123-0x0000022666360000-0x0000022668255000-memory.dmp

Filesize
31.0MB

Download
memory/2300-180-0x0000000000000000-mapping.dmp

Download
memory/3200-179-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads