bab587a850a7952d70723762f4c07f88faaf780a96116000f499716dde9d4b2f

General

Target

catalog-194578415.xls
Size

367KB
MD5

b9bff82e12b808e5e8f2df9d89921c60
SHA1

2cb9aec2e2173e6c08e5281ea478f44abccec3ee
SHA256

15395a5ae5252d66b34ffafdc00ed7f2f04ea3207701a00ad46e71d66225ba88
SHA512

a6bbb004c8d079fa0b103ea4c6ae6c87144a320854ff9d06d9db1732e58efb8c38792fd975336bde7cc476a195a8993c55ab3d5de6b73426f7ffb1453cef6f61

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	64	1908	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3928	1908	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

1908 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE
1908	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1908 wrote to memory of 64	1908	EXCEL.EXE	rundll32.exe
PID 1908 wrote to memory of 64	1908	EXCEL.EXE	rundll32.exe
PID 1908 wrote to memory of 3928	1908	EXCEL.EXE	rundll32.exe
PID 1908 wrote to memory of 3928	1908	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-194578415.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:64

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3928

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

Replay Monitor

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Downloads

memory/64-179-0x0000000000000000-mapping.dmp

Download
memory/1908-114-0x00007FF63A830000-0x00007FF63DDE6000-memory.dmp

Filesize
53.7MB

Download
memory/1908-115-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/1908-116-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/1908-117-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/1908-118-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/1908-121-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/1908-122-0x00007FFAE3C70000-0x00007FFAE4D5E000-memory.dmp

Filesize
16.9MB

Download
memory/1908-123-0x00007FFAE1C70000-0x00007FFAE3B65000-memory.dmp

Filesize
31.0MB

Download
memory/3928-180-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads