f953938db5aa763b3039c92c585da82c298de5e48d4c552d7466b7ccaa04e5bc

General

Target

catalog-2039293384.xls
Size

367KB
MD5

450343e702838aae649c1392992c689a
SHA1

0c41c17bde6add3c840f55ed92550cc45835f2fc
SHA256

ff9e6980cc78f1d3b9518a0f9814962bcd7b1edd36fdbd567806a51a9f411b78
SHA512

873a81aa933c2e7d9b7d37ea09740b614a88e4535d44378fbfa3c554b7b853298a242a9ff0168c23103f7c1bb1f8468c0801ec2be32f5b03f4af8341748448d3

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	2044	3984	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1756	3984	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

3984 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE
3984	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3984 wrote to memory of 2044	3984	EXCEL.EXE	rundll32.exe
PID 3984 wrote to memory of 2044	3984	EXCEL.EXE	rundll32.exe
PID 3984 wrote to memory of 1756	3984	EXCEL.EXE	rundll32.exe
PID 3984 wrote to memory of 1756	3984	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-2039293384.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3984

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2044

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1756

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/1756-180-0x0000000000000000-mapping.dmp

Download
memory/2044-179-0x0000000000000000-mapping.dmp

Download
memory/3984-114-0x00007FF6A8520000-0x00007FF6ABAD6000-memory.dmp

Filesize
53.7MB

Download
memory/3984-115-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/3984-116-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/3984-117-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/3984-118-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/3984-122-0x00007FF8256F0000-0x00007FF825700000-memory.dmp

Filesize
64KB

Download
memory/3984-121-0x00007FF8459E0000-0x00007FF846ACE000-memory.dmp

Filesize
16.9MB

Download
memory/3984-123-0x00007FF843AE0000-0x00007FF8459D5000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads