be481b1e185c71d87c8f3b68f6c3bb8d09cc30e9ff735f97c474ce89187dd627

General

Target

Overdue-Debt-362804077-03042021.xls
Size

76KB
MD5

a5ce788938ede1feac694ca1bd819792
SHA1

76921b6a68d2ea6ac336c03e3303eb2463f9020c
SHA256

be481b1e185c71d87c8f3b68f6c3bb8d09cc30e9ff735f97c474ce89187dd627
SHA512

0cec65ffa96a5177c8af308623baf989baf17c59afdc3d5490f845252a70cc477bec3511da26562ff51d61fc939c63f0b0f4de1e78944b2e06cd41c5f6a7f4c2

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	2332	3584	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3864	3584	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3928	3584	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3592	3584	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3844	3584	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

3584 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3584	EXCEL.EXE
3584	EXCEL.EXE
3584	EXCEL.EXE
3584	EXCEL.EXE
3584	EXCEL.EXE
3584	EXCEL.EXE
3584	EXCEL.EXE
3584	EXCEL.EXE
3584	EXCEL.EXE
3584	EXCEL.EXE
3584	EXCEL.EXE
3584	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3584 wrote to memory of 2332	3584	EXCEL.EXE	rundll32.exe
PID 3584 wrote to memory of 2332	3584	EXCEL.EXE	rundll32.exe
PID 3584 wrote to memory of 3864	3584	EXCEL.EXE	rundll32.exe
PID 3584 wrote to memory of 3864	3584	EXCEL.EXE	rundll32.exe
PID 3584 wrote to memory of 3928	3584	EXCEL.EXE	rundll32.exe
PID 3584 wrote to memory of 3928	3584	EXCEL.EXE	rundll32.exe
PID 3584 wrote to memory of 3592	3584	EXCEL.EXE	rundll32.exe
PID 3584 wrote to memory of 3592	3584	EXCEL.EXE	rundll32.exe
PID 3584 wrote to memory of 3844	3584	EXCEL.EXE	rundll32.exe
PID 3584 wrote to memory of 3844	3584	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-362804077-03042021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3584

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2332

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3864

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3928

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3592

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3844

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/2332-7-0x0000000000000000-mapping.dmp

Download
memory/3584-2-0x00007FFB667A0000-0x00007FFB667B0000-memory.dmp

Filesize
64KB

Download
memory/3584-3-0x00007FFB667A0000-0x00007FFB667B0000-memory.dmp

Filesize
64KB

Download
memory/3584-4-0x00007FFB667A0000-0x00007FFB667B0000-memory.dmp

Filesize
64KB

Download
memory/3584-5-0x00007FFB667A0000-0x00007FFB667B0000-memory.dmp

Filesize
64KB

Download
memory/3584-6-0x00007FFB89D60000-0x00007FFB8A397000-memory.dmp

Filesize
6.2MB

Download
memory/3592-10-0x0000000000000000-mapping.dmp

Download
memory/3844-11-0x0000000000000000-mapping.dmp

Download
memory/3864-8-0x0000000000000000-mapping.dmp

Download
memory/3928-9-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads