b143c00769598454abbfa30d2a0f2fe14f1a34c890078650488dffeff7c6c775

General

Target

Debt-Details-787008390-03052021.xls
Size

78KB
MD5

ab7e7cdb468d760257367c21c25966d4
SHA1

7aafff3ff5184cd65cddfe50b3438648c5a2ec55
SHA256

ad987b8df15faf669433887679d2884eba2eae7c62a2c2af6c78c991cf275128
SHA512

b53543c22a298427dee74eb1019d51742eba67aeb5af58cdcfdb1da244d25d8084a16e2c3c68b2b65b756ded025d07f50cb21429de993f0f4ecfb09692122e61

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	3928	640	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2884	640	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3920	640	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	496	640	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3176	640	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

640 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE
640	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 640 wrote to memory of 3928	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 3928	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 2884	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 2884	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 3920	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 3920	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 496	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 496	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 3176	640	EXCEL.EXE	rundll32.exe
PID 640 wrote to memory of 3176	640	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\Debt-Details-787008390-03052021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:640

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

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2884

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3920

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:496

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3176

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/496-10-0x0000000000000000-mapping.dmp

Download
memory/640-2-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-3-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-4-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-5-0x00007FFC11220000-0x00007FFC11230000-memory.dmp

Filesize
64KB

Download
memory/640-6-0x00007FFC346F0000-0x00007FFC34D27000-memory.dmp

Filesize
6.2MB

Download
memory/2884-8-0x0000000000000000-mapping.dmp

Download
memory/3176-11-0x0000000000000000-mapping.dmp

Download
memory/3920-9-0x0000000000000000-mapping.dmp

Download
memory/3928-7-0x0000000000000000-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