30edfa240f98e74950ea04b4e99114d7b7ed421ca5b09975f0d1588aa8c33c7a

General

Target

catalog-264883487.xls
Size

367KB
MD5

215703b065490d90adbd891b9db320fc
SHA1

065c588163d324c1b76ecc45abd76fc7bc54723e
SHA256

f4f17b573ed8b8dcb740c4ae8feb99e1a95d7df30625e1851769bf10ccb30c31
SHA512

c844f969e5f38fec9f14587acd7194507021dcfa5994c50ea0be1e182373cc1431ce69b8c8240ba59fa7e2698010a99e88f217f4e3d126b4d058946da5128e3b

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	188	4064	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	196	4064	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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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

4064 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE
4064	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4064 wrote to memory of 188	4064	EXCEL.EXE	rundll32.exe
PID 4064 wrote to memory of 188	4064	EXCEL.EXE	rundll32.exe
PID 4064 wrote to memory of 196	4064	EXCEL.EXE	rundll32.exe
PID 4064 wrote to memory of 196	4064	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-264883487.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4064

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:188

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\tuti.rut1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:196

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/188-179-0x0000000000000000-mapping.dmp

Download
memory/196-180-0x0000000000000000-mapping.dmp

Download
memory/4064-114-0x00007FF72F110000-0x00007FF7326C6000-memory.dmp

Filesize
53.7MB

Download
memory/4064-115-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/4064-116-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/4064-117-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/4064-118-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/4064-122-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/4064-121-0x00007FFDC2FA0000-0x00007FFDC408E000-memory.dmp

Filesize
16.9MB

Download
memory/4064-123-0x00007FFDC10A0000-0x00007FFDC2F95000-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