8489048aac28b7481d939ef400ef39a8af9a7de2f4c8785ca556e89f0cecbf79

General

Target

Debt-Details-292687744-03052021.xls
Size

78KB
MD5

afd804d298d7017937aeae6292b02e04
SHA1

45d675b25e75e87ee7d5bc234a2017e387d5115c
SHA256

8489048aac28b7481d939ef400ef39a8af9a7de2f4c8785ca556e89f0cecbf79
SHA512

86ffb76955829aea983415292256f16c0b4e1989a32457cba1f95cb28a0d52e0acacc0e8856f9dc3832d7b2d71d9fa1ad13a79d23f516c04925dd077d03ff3da

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	4428	4776	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3144	4776	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4452	4776	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4492	4776	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1620	4776	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

4776 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4776 EXCEL.EXE
4776 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE
4776	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4776 wrote to memory of 4428	4776	EXCEL.EXE	rundll32.exe
PID 4776 wrote to memory of 4428	4776	EXCEL.EXE	rundll32.exe
PID 4776 wrote to memory of 3144	4776	EXCEL.EXE	rundll32.exe
PID 4776 wrote to memory of 3144	4776	EXCEL.EXE	rundll32.exe
PID 4776 wrote to memory of 4452	4776	EXCEL.EXE	rundll32.exe
PID 4776 wrote to memory of 4452	4776	EXCEL.EXE	rundll32.exe
PID 4776 wrote to memory of 4492	4776	EXCEL.EXE	rundll32.exe
PID 4776 wrote to memory of 4492	4776	EXCEL.EXE	rundll32.exe
PID 4776 wrote to memory of 1620	4776	EXCEL.EXE	rundll32.exe
PID 4776 wrote to memory of 1620	4776	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-292687744-03052021.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:4776

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4428

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3144

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4452

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4492

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1620

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/1620-11-0x0000000000000000-mapping.dmp

Download
memory/3144-8-0x0000000000000000-mapping.dmp

Download
memory/4428-7-0x0000000000000000-mapping.dmp

Download
memory/4452-9-0x0000000000000000-mapping.dmp

Download
memory/4492-10-0x0000000000000000-mapping.dmp

Download
memory/4776-2-0x00007FFF21F30000-0x00007FFF21F40000-memory.dmp

Filesize
64KB

Download
memory/4776-3-0x00007FFF21F30000-0x00007FFF21F40000-memory.dmp

Filesize
64KB

Download
memory/4776-4-0x00007FFF21F30000-0x00007FFF21F40000-memory.dmp

Filesize
64KB

Download
memory/4776-5-0x00007FFF456E0000-0x00007FFF45D17000-memory.dmp

Filesize
6.2MB

Download
memory/4776-6-0x00007FFF21F30000-0x00007FFF21F40000-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