6603c3cc6d507fc89e59426b60d1c1045f9631b478103160aa6831eb7ab15d39

General

Target

Overdue-Debt-1869073547-03042021.xls
Size

76KB
MD5

5ce3d485868eca374c50b204acf4cba3
SHA1

8ec156b7865808e66d500fe2aeffccd6ddd144c9
SHA256

6603c3cc6d507fc89e59426b60d1c1045f9631b478103160aa6831eb7ab15d39
SHA512

ac655b94b5203f343e7ed5f8882508c278f18e7fc990124d5fc1c92daaab1bedff5e293a640e2a1037e7a5408e3b0bd7198602641f575876b4c58b3e83a801ad

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	1352	3884	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3460	3884	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1988	3884	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3816	3884	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3792	3884	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\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

3884 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

3884 EXCEL.EXE
3884 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE
3884	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3884 wrote to memory of 1352	3884	EXCEL.EXE	rundll32.exe
PID 3884 wrote to memory of 1352	3884	EXCEL.EXE	rundll32.exe
PID 3884 wrote to memory of 3460	3884	EXCEL.EXE	rundll32.exe
PID 3884 wrote to memory of 3460	3884	EXCEL.EXE	rundll32.exe
PID 3884 wrote to memory of 1988	3884	EXCEL.EXE	rundll32.exe
PID 3884 wrote to memory of 1988	3884	EXCEL.EXE	rundll32.exe
PID 3884 wrote to memory of 3816	3884	EXCEL.EXE	rundll32.exe
PID 3884 wrote to memory of 3816	3884	EXCEL.EXE	rundll32.exe
PID 3884 wrote to memory of 3792	3884	EXCEL.EXE	rundll32.exe
PID 3884 wrote to memory of 3792	3884	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-1869073547-03042021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3884

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1352

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3460

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1988

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3816

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3792

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/1352-7-0x0000000000000000-mapping.dmp

Download
memory/1988-9-0x0000000000000000-mapping.dmp

Download
memory/3460-8-0x0000000000000000-mapping.dmp

Download
memory/3792-11-0x0000000000000000-mapping.dmp

Download
memory/3816-10-0x0000000000000000-mapping.dmp

Download
memory/3884-2-0x00007FFF49320000-0x00007FFF49330000-memory.dmp

Filesize
64KB

Download
memory/3884-3-0x00007FFF49320000-0x00007FFF49330000-memory.dmp

Filesize
64KB

Download
memory/3884-4-0x00007FFF49320000-0x00007FFF49330000-memory.dmp

Filesize
64KB

Download
memory/3884-5-0x00007FFF49320000-0x00007FFF49330000-memory.dmp

Filesize
64KB

Download
memory/3884-6-0x00007FFF6D2A0000-0x00007FFF6D8D7000-memory.dmp

Filesize
6.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads