2d31ba4418a570891d020216196db66e3c6c48f0ff0e2203cdce936090013182

General

Target

Debt-Details-1507647719-03052021.xls
Size

78KB
MD5

ff102bc2c8369141d3e365358bddd97a
SHA1

ffd81f998d1a315b2a7c27d9d57559ee255d4a91
SHA256

c38f5a3e405ec109061f694e08cc9d3d81af372fe55c96581e184a758782dad4
SHA512

b50926632b20e221c5622b14971fe5a79dac703431a65040ce7a2301ce4875de68a751fb0780f00fe6c32e84471aa32fc345ecc963b08bc5b6944ca5bd81e3f7

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	4260	4700	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3036	4700	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	516	4700	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	640	4700	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4336	4700	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

4700 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE
4700	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4700 wrote to memory of 4260	4700	EXCEL.EXE	rundll32.exe
PID 4700 wrote to memory of 4260	4700	EXCEL.EXE	rundll32.exe
PID 4700 wrote to memory of 3036	4700	EXCEL.EXE	rundll32.exe
PID 4700 wrote to memory of 3036	4700	EXCEL.EXE	rundll32.exe
PID 4700 wrote to memory of 516	4700	EXCEL.EXE	rundll32.exe
PID 4700 wrote to memory of 516	4700	EXCEL.EXE	rundll32.exe
PID 4700 wrote to memory of 640	4700	EXCEL.EXE	rundll32.exe
PID 4700 wrote to memory of 640	4700	EXCEL.EXE	rundll32.exe
PID 4700 wrote to memory of 4336	4700	EXCEL.EXE	rundll32.exe
PID 4700 wrote to memory of 4336	4700	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-1507647719-03052021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4700

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4260

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3036

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:516

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:640

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4336

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/516-9-0x0000000000000000-mapping.dmp

Download
memory/640-10-0x0000000000000000-mapping.dmp

Download
memory/3036-8-0x0000000000000000-mapping.dmp

Download
memory/4260-7-0x0000000000000000-mapping.dmp

Download
memory/4336-11-0x0000000000000000-mapping.dmp

Download
memory/4700-2-0x00007FF82F820000-0x00007FF82F830000-memory.dmp

Filesize
64KB

Download
memory/4700-3-0x00007FF82F820000-0x00007FF82F830000-memory.dmp

Filesize
64KB

Download
memory/4700-4-0x00007FF82F820000-0x00007FF82F830000-memory.dmp

Filesize
64KB

Download
memory/4700-5-0x00007FF8554B0000-0x00007FF855AE7000-memory.dmp

Filesize
6.2MB

Download
memory/4700-6-0x00007FF82F820000-0x00007FF82F830000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads