2baeb3576e4f42f74968ae728732ab1cb30ffca36edfd70e32d537e22151810f

General

Target

catalog-251600736.xls
Size

367KB
MD5

28ff2bde282c2e93649cc6dd346d8b29
SHA1

194bd0ce6848ba4cf7a5d23379e7e6c6ca39386e
SHA256

c2cefcde2083a82c2532d7c33549fa855994f425f5a0387b0121e60c9ce02155
SHA512

2018f4823fa7eb4858db32d82884e1481822412fa6f3db36a8ba61d4048ca3bbfff3225a0d0482e77e85fec0bd2f9c02b41809364feea38c4152a1dab0ce0138

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	3456	1808	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1972	1808	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

1808 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE
1808	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1808 wrote to memory of 3456	1808	EXCEL.EXE	rundll32.exe
PID 1808 wrote to memory of 3456	1808	EXCEL.EXE	rundll32.exe
PID 1808 wrote to memory of 1972	1808	EXCEL.EXE	rundll32.exe
PID 1808 wrote to memory of 1972	1808	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-251600736.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1808

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3456

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1972

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/1808-114-0x00007FF7611C0000-0x00007FF764776000-memory.dmp

Filesize
53.7MB

Download
memory/1808-115-0x00007FF94EEB0000-0x00007FF94EEC0000-memory.dmp

Filesize
64KB

Download
memory/1808-116-0x00007FF94EEB0000-0x00007FF94EEC0000-memory.dmp

Filesize
64KB

Download
memory/1808-117-0x00007FF94EEB0000-0x00007FF94EEC0000-memory.dmp

Filesize
64KB

Download
memory/1808-118-0x00007FF94EEB0000-0x00007FF94EEC0000-memory.dmp

Filesize
64KB

Download
memory/1808-122-0x00007FF94EEB0000-0x00007FF94EEC0000-memory.dmp

Filesize
64KB

Download
memory/1808-121-0x00007FF96F810000-0x00007FF9708FE000-memory.dmp

Filesize
16.9MB

Download
memory/1808-123-0x0000023393060000-0x0000023394F55000-memory.dmp

Filesize
31.0MB

Download
memory/1972-180-0x0000000000000000-mapping.dmp

Download
memory/3456-179-0x0000000000000000-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