903d82f687b952277d18912b1492339944d8632c139329ba5a32c4b6b47362bf

General

Target

Debt-Details-1318148499-03052021.xls
Size

78KB
MD5

e71d78a14a5f0a046e12ab09ff674533
SHA1

e59eef89178ff2824777b7f5ca44e50950fff88e
SHA256

903d82f687b952277d18912b1492339944d8632c139329ba5a32c4b6b47362bf
SHA512

2b66cfad8c841373868ca9274c1ce8ed1f9a9666aacc8ae37256a628c9851e4b1a02579716b81f3408b8c5dfbf2e6d82ba4e7e219896dca41d5cfb1a39a969d5

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	3756	3300	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	568	3300	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3940	3300	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3956	3300	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3840	3300	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

3300 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3300	EXCEL.EXE
3300	EXCEL.EXE
3300	EXCEL.EXE
3300	EXCEL.EXE
3300	EXCEL.EXE
3300	EXCEL.EXE
3300	EXCEL.EXE
3300	EXCEL.EXE
3300	EXCEL.EXE
3300	EXCEL.EXE
3300	EXCEL.EXE
3300	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3300 wrote to memory of 3756	3300	EXCEL.EXE	rundll32.exe
PID 3300 wrote to memory of 3756	3300	EXCEL.EXE	rundll32.exe
PID 3300 wrote to memory of 568	3300	EXCEL.EXE	rundll32.exe
PID 3300 wrote to memory of 568	3300	EXCEL.EXE	rundll32.exe
PID 3300 wrote to memory of 3940	3300	EXCEL.EXE	rundll32.exe
PID 3300 wrote to memory of 3940	3300	EXCEL.EXE	rundll32.exe
PID 3300 wrote to memory of 3956	3300	EXCEL.EXE	rundll32.exe
PID 3300 wrote to memory of 3956	3300	EXCEL.EXE	rundll32.exe
PID 3300 wrote to memory of 3840	3300	EXCEL.EXE	rundll32.exe
PID 3300 wrote to memory of 3840	3300	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-1318148499-03052021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3300

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3756

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:568

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3940

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3956

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3840

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/568-8-0x0000000000000000-mapping.dmp

Download
memory/3300-2-0x00007FF8A2B20000-0x00007FF8A2B30000-memory.dmp

Filesize
64KB

Download
memory/3300-3-0x00007FF8A2B20000-0x00007FF8A2B30000-memory.dmp

Filesize
64KB

Download
memory/3300-4-0x00007FF8A2B20000-0x00007FF8A2B30000-memory.dmp

Filesize
64KB

Download
memory/3300-5-0x00007FF8A2B20000-0x00007FF8A2B30000-memory.dmp

Filesize
64KB

Download
memory/3300-6-0x00007FF8C5C40000-0x00007FF8C6277000-memory.dmp

Filesize
6.2MB

Download
memory/3756-7-0x0000000000000000-mapping.dmp

Download
memory/3840-11-0x0000000000000000-mapping.dmp

Download
memory/3940-9-0x0000000000000000-mapping.dmp

Download
memory/3956-10-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads