f72f56e3b37660a45354150c63713dabc406ba057098c733fae08aaf1c4e9695

General

Target

Debt-Details-854237329-03052021.xls
Size

78KB
MD5

f0e172b4b6c31813387f584f95da632a
SHA1

38291885db835e98c518f4a4c86819f0e16a8808
SHA256

f72f56e3b37660a45354150c63713dabc406ba057098c733fae08aaf1c4e9695
SHA512

c475b4e057673a77f8b167213a8f44e3352e70dc89838ff47b65faff73b45863e5165322e37520e4aaf45e19912525408f2f1cce89d8d8f475d63e61a79b9f2d

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	3100	504	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3784	504	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3364	504	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2296	504	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3464	504	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

504 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 504 wrote to memory of 3100	504	EXCEL.EXE	rundll32.exe
PID 504 wrote to memory of 3100	504	EXCEL.EXE	rundll32.exe
PID 504 wrote to memory of 3784	504	EXCEL.EXE	rundll32.exe
PID 504 wrote to memory of 3784	504	EXCEL.EXE	rundll32.exe
PID 504 wrote to memory of 3364	504	EXCEL.EXE	rundll32.exe
PID 504 wrote to memory of 3364	504	EXCEL.EXE	rundll32.exe
PID 504 wrote to memory of 2296	504	EXCEL.EXE	rundll32.exe
PID 504 wrote to memory of 2296	504	EXCEL.EXE	rundll32.exe
PID 504 wrote to memory of 3464	504	EXCEL.EXE	rundll32.exe
PID 504 wrote to memory of 3464	504	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-854237329-03052021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:504

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3100

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3784

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3364

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2296

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3464

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/504-2-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

Filesize
64KB

Download
memory/504-3-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

Filesize
64KB

Download
memory/504-4-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

Filesize
64KB

Download
memory/504-5-0x00007FF8030A0000-0x00007FF8036D7000-memory.dmp

Filesize
6.2MB

Download
memory/504-6-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

Filesize
64KB

Download
memory/2296-10-0x0000000000000000-mapping.dmp

Download
memory/3100-7-0x0000000000000000-mapping.dmp

Download
memory/3364-9-0x0000000000000000-mapping.dmp

Download
memory/3464-11-0x0000000000000000-mapping.dmp

Download
memory/3784-8-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads