72d8d9465371cb6b97738d6eb6cf22c4ac2de4c391cf67b71af7f125ecef7366

General

Target

Overdue-Debt-2011551101-03042021.xls
Size

76KB
MD5

7a47928a225ce7f7ed46588ce33461d8
SHA1

2ac088f42877472f9577f1d4b5ec7d103dcbb9db
SHA256

7c5747c236ee6957a2cc3c33dba9d2888d8c1276430d3fc06f5c4b8552d55b3d
SHA512

cf88be8d972a344da19b50a77c76102855f8f5167c00b63b798a4b0878d1d3c62dce5ab421a6d91e3b2b5f25c5a2c5605c0a1e3fdf21fd62b499e9468bbfbb60

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	1912	1048	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3852	1048	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3044	1048	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3960	1048	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3148	1048	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

1048 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1048 wrote to memory of 1912	1048	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 1912	1048	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 3852	1048	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 3852	1048	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 3044	1048	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 3044	1048	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 3960	1048	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 3960	1048	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 3148	1048	EXCEL.EXE	rundll32.exe
PID 1048 wrote to memory of 3148	1048	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-2011551101-03042021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1048

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1912

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3852

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3044

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3960

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3148

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/1048-2-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1048-3-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1048-4-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1048-5-0x00007FF943A40000-0x00007FF944077000-memory.dmp

Filesize
6.2MB

Download
memory/1048-6-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1912-7-0x0000000000000000-mapping.dmp

Download
memory/3044-9-0x0000000000000000-mapping.dmp

Download
memory/3148-11-0x0000000000000000-mapping.dmp

Download
memory/3852-8-0x0000000000000000-mapping.dmp

Download
memory/3960-10-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads