90571ef6228da3183da7fbc6bf5eff12933c7d2ec1cb460809b687c5e0996d21

General

Target

Debt-Details-122785705-03052021.xls
Size

78KB
MD5

c33f14f5c08ce99c38ad91690d93a11b
SHA1

bd0e5b60b542ad2031d05ec1113feb42b369c5a2
SHA256

0d3109e046c61f2822e061343c360e0328feb6805c52b2e32146a122de253177
SHA512

2333e54e2d9dbb6e7a300a5c4e91199d5fc344014f43c494ddd2c81637351c85a5a3a1382e99fd97aedd8ad367d7011eb0b0f0a92e478e048a600554e8ef2a69

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	1132	988	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4032	988	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2824	988	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2252	988	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1056	988	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\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

988 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

988 EXCEL.EXE
988 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE
988	EXCEL.EXE

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 988 wrote to memory of 1132	988	EXCEL.EXE	rundll32.exe
PID 988 wrote to memory of 1132	988	EXCEL.EXE	rundll32.exe
PID 988 wrote to memory of 4032	988	EXCEL.EXE	rundll32.exe
PID 988 wrote to memory of 4032	988	EXCEL.EXE	rundll32.exe
PID 988 wrote to memory of 2824	988	EXCEL.EXE	rundll32.exe
PID 988 wrote to memory of 2824	988	EXCEL.EXE	rundll32.exe
PID 988 wrote to memory of 2252	988	EXCEL.EXE	rundll32.exe
PID 988 wrote to memory of 2252	988	EXCEL.EXE	rundll32.exe
PID 988 wrote to memory of 1056	988	EXCEL.EXE	rundll32.exe
PID 988 wrote to memory of 1056	988	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-122785705-03052021.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:988

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1132

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4032

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2824

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr3,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2252

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Vijaser.lasjr4,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1056

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/988-2-0x00007FF9F0570000-0x00007FF9F0580000-memory.dmp

Filesize
64KB

Download
memory/988-3-0x00007FF9F0570000-0x00007FF9F0580000-memory.dmp

Filesize
64KB

Download
memory/988-4-0x00007FF9F0570000-0x00007FF9F0580000-memory.dmp

Filesize
64KB

Download
memory/988-5-0x00007FFA14000000-0x00007FFA14637000-memory.dmp

Filesize
6.2MB

Download
memory/988-6-0x00007FF9F0570000-0x00007FF9F0580000-memory.dmp

Filesize
64KB

Download
memory/1056-11-0x0000000000000000-mapping.dmp

Download
memory/1132-7-0x0000000000000000-mapping.dmp

Download
memory/2252-10-0x0000000000000000-mapping.dmp

Download
memory/2824-9-0x0000000000000000-mapping.dmp

Download
memory/4032-8-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads