6599d132c22ebdffbd3a995798cdbb1d6c4e4b4ebabf159d9da686382bb415b0

General

Target

catalog-2023423371.xls
Size

367KB
MD5

df2cb9f16e1832b5e61c8f3ba7ecaa70
SHA1

d41265b00f763726e91752c22c376b6012e85c24
SHA256

7a10b84f68f7a94cb119a487bf40292af08d2d137ba5317dede9055459982308
SHA512

c82cc8b75b3a8f38aac71aa05cf57b85c60f1042e418cca70a0d9837241edf93b231463e88a5b548c477e53a9095dc18f5adff7ba7aad7b9b5fd5bafe188cf97

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	4044	4060	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2356	4060	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

4060 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE
4060	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4060 wrote to memory of 4044	4060	EXCEL.EXE	rundll32.exe
PID 4060 wrote to memory of 4044	4060	EXCEL.EXE	rundll32.exe
PID 4060 wrote to memory of 2356	4060	EXCEL.EXE	rundll32.exe
PID 4060 wrote to memory of 2356	4060	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-2023423371.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4060

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4044

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2356

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

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Downloads

memory/2356-180-0x0000000000000000-mapping.dmp

Download
memory/4044-179-0x0000000000000000-mapping.dmp

Download
memory/4060-114-0x00007FF745370000-0x00007FF748926000-memory.dmp

Filesize
53.7MB

Download
memory/4060-115-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/4060-116-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/4060-117-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/4060-118-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/4060-121-0x00007FFAC36F0000-0x00007FFAC3700000-memory.dmp

Filesize
64KB

Download
memory/4060-122-0x00007FFAE3C50000-0x00007FFAE4D3E000-memory.dmp

Filesize
16.9MB

Download
memory/4060-123-0x00007FFAE1D50000-0x00007FFAE3C45000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads