f668f2176db468225b7ab8aadcf25cf57f4efed40eafdf745d7248601a72eacd

General

Target

Overdue-Debt-1089231007-03042021.xls
Size

76KB
MD5

a247cc778977b46e22181cd610c74b14
SHA1

0c46f44b4b6add517fdee6dfda3f83d744a1fb94
SHA256

f668f2176db468225b7ab8aadcf25cf57f4efed40eafdf745d7248601a72eacd
SHA512

95b8cedf292769e9bb8a4f192869a4caaae62e8612dfd19fdcc9bf8cd676058a6dffbbcb2c1af6265047e1444e257269181e497673028060336da193d92e2e9b

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	2872	580	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2080	580	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3868	580	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2476	580	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4052	580	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

580 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE
580	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 580 wrote to memory of 2872	580	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 2872	580	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 2080	580	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 2080	580	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 3868	580	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 3868	580	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 2476	580	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 2476	580	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 4052	580	EXCEL.EXE	rundll32.exe
PID 580 wrote to memory of 4052	580	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-1089231007-03042021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:580

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2872

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2080

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3868

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2476

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4052

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

Loading Replay Monitor...

Downloads

memory/580-2-0x00007FFE76A80000-0x00007FFE76A90000-memory.dmp

Filesize
64KB

Download
memory/580-3-0x00007FFE76A80000-0x00007FFE76A90000-memory.dmp

Filesize
64KB

Download
memory/580-4-0x00007FFE76A80000-0x00007FFE76A90000-memory.dmp

Filesize
64KB

Download
memory/580-6-0x00007FFE76A80000-0x00007FFE76A90000-memory.dmp

Filesize
64KB

Download
memory/580-5-0x00007FFE99A90000-0x00007FFE9A0C7000-memory.dmp

Filesize
6.2MB

Download
memory/2080-8-0x0000000000000000-mapping.dmp

Download
memory/2476-10-0x0000000000000000-mapping.dmp

Download
memory/2872-7-0x0000000000000000-mapping.dmp

Download
memory/3868-9-0x0000000000000000-mapping.dmp

Download
memory/4052-11-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads