c1685fc32fdaeff29f5f01755925459749849392246985251f39aafd98fc36d9

General

Target

catalog-2052649991.xls
Size

367KB
MD5

36aac2f3e5592b10edb298273512d27b
SHA1

ed9c7f93dea5310722139ede02bdce992405b61d
SHA256

926233fe3d3366dca1b54637c328c02dac9736522ad4119d36da0921b122d12a
SHA512

dc559017e45140a5f4bbe8f135759b87f129ea2ed8e310886f89e65621bc0d77d7ea79148e0a0d482a9b254bb6608a34ce12d421ec976ef10c57f023e4bb1225

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	2116	1828	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3960	1828	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

1828 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE
1828	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1828 wrote to memory of 2116	1828	EXCEL.EXE	rundll32.exe
PID 1828 wrote to memory of 2116	1828	EXCEL.EXE	rundll32.exe
PID 1828 wrote to memory of 3960	1828	EXCEL.EXE	rundll32.exe
PID 1828 wrote to memory of 3960	1828	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-2052649991.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1828

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2116

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3960

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/1828-114-0x00007FF669730000-0x00007FF66CCE6000-memory.dmp

Filesize
53.7MB

Download
memory/1828-115-0x00007FFF77040000-0x00007FFF77050000-memory.dmp

Filesize
64KB

Download
memory/1828-116-0x00007FFF77040000-0x00007FFF77050000-memory.dmp

Filesize
64KB

Download
memory/1828-117-0x00007FFF77040000-0x00007FFF77050000-memory.dmp

Filesize
64KB

Download
memory/1828-118-0x00007FFF77040000-0x00007FFF77050000-memory.dmp

Filesize
64KB

Download
memory/1828-122-0x00007FFF77040000-0x00007FFF77050000-memory.dmp

Filesize
64KB

Download
memory/1828-121-0x00007FFF97570000-0x00007FFF9865E000-memory.dmp

Filesize
16.9MB

Download
memory/1828-123-0x0000024D55210000-0x0000024D57105000-memory.dmp

Filesize
31.0MB

Download
memory/2116-179-0x0000000000000000-mapping.dmp

Download
memory/3960-180-0x0000000000000000-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