5e7952a503858821de90a6630ab1054fb7d1324ac09f02c3b301c5a7ca3c1589

General

Target

catalog-1915702639.xls
Size

367KB
MD5

10876a6690fc3ee72e28b66d11093677
SHA1

7f63d09326c4bf8427e9cad5bc9e13df78bba58c
SHA256

cde7d3bcb03f407090717fc2d8eb6e9aa32d43d67ff8d49d817ce6a59cccf3f6
SHA512

53aa3d7c3daa64bf6ca2da0f27ff84d46a53c374985e09739470c2ea4e5247f3772adc05702f0b75c21f841568591c120b608186ddf9d9636807865f8d833fc5

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	708	596	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	768	596	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

596 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE
596	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 596 wrote to memory of 708	596	EXCEL.EXE	rundll32.exe
PID 596 wrote to memory of 708	596	EXCEL.EXE	rundll32.exe
PID 596 wrote to memory of 768	596	EXCEL.EXE	rundll32.exe
PID 596 wrote to memory of 768	596	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-1915702639.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:596

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:708

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:768

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/596-114-0x00007FF7FC960000-0x00007FF7FFF16000-memory.dmp

Filesize
53.7MB

Download
memory/596-115-0x00007FF80BC00000-0x00007FF80BC10000-memory.dmp

Filesize
64KB

Download
memory/596-116-0x00007FF80BC00000-0x00007FF80BC10000-memory.dmp

Filesize
64KB

Download
memory/596-117-0x00007FF80BC00000-0x00007FF80BC10000-memory.dmp

Filesize
64KB

Download
memory/596-118-0x00007FF80BC00000-0x00007FF80BC10000-memory.dmp

Filesize
64KB

Download
memory/596-121-0x00007FF80BC00000-0x00007FF80BC10000-memory.dmp

Filesize
64KB

Download
memory/596-122-0x00007FF82C270000-0x00007FF82D35E000-memory.dmp

Filesize
16.9MB

Download
memory/596-123-0x00007FF82A370000-0x00007FF82C265000-memory.dmp

Filesize
31.0MB

Download
memory/708-179-0x0000000000000000-mapping.dmp

Download
memory/768-180-0x0000000000000000-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