54c0dc22322796074802d7607c3bfa52f802aecf8c3ad61d632c2c050f4cbcc9

General

Target

Overdue-Debt-1152978906-03042021.xls
Size

76KB
MD5

74ce952fc86ff58ebf10821926bb7ec5
SHA1

61451bf8547c8ade0b32b63b2bfdea228de29873
SHA256

8a80afbf0c5a61bca399013f7342d15c2f967b71e9ca41b494ad84d92450bf01
SHA512

a600419fb2a08e117f240171c400e20c4c6f510fb3c6736b0cb2de50d4cf5126574517542a3ebaddde30a99fc8958e18c391e1e502142ddb104118ae0282d219

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 5 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exerundll32.exerundll32.exerundll32.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	2080	728	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3964	728	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1728	728	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1240	728	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2732	728	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

728 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE
728	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 728 wrote to memory of 2080	728	EXCEL.EXE	rundll32.exe
PID 728 wrote to memory of 2080	728	EXCEL.EXE	rundll32.exe
PID 728 wrote to memory of 3964	728	EXCEL.EXE	rundll32.exe
PID 728 wrote to memory of 3964	728	EXCEL.EXE	rundll32.exe
PID 728 wrote to memory of 1728	728	EXCEL.EXE	rundll32.exe
PID 728 wrote to memory of 1728	728	EXCEL.EXE	rundll32.exe
PID 728 wrote to memory of 1240	728	EXCEL.EXE	rundll32.exe
PID 728 wrote to memory of 1240	728	EXCEL.EXE	rundll32.exe
PID 728 wrote to memory of 2732	728	EXCEL.EXE	rundll32.exe
PID 728 wrote to memory of 2732	728	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\Overdue-Debt-1152978906-03042021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:728

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2080

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3964

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1728

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1240

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2732

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/728-2-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-3-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-4-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-5-0x00007FF97B640000-0x00007FF97B650000-memory.dmp

Filesize
64KB

Download
memory/728-6-0x00007FF99EA50000-0x00007FF99F087000-memory.dmp

Filesize
6.2MB

Download
memory/1240-10-0x0000000000000000-mapping.dmp

Download
memory/1728-9-0x0000000000000000-mapping.dmp

Download
memory/2080-7-0x0000000000000000-mapping.dmp

Download
memory/2732-11-0x0000000000000000-mapping.dmp

Download
memory/3964-8-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads