d3c3e8da2a5605e86cad1417a6b7a7082307f7a30a6dcd67198fbe6e3ee5b7d0

General

Target

Debt-Details-120792975-05132021.xlsm
Size

196KB
MD5

90213af289c94acae0f36fb613155187
SHA1

826b63a30a1c44ce6ecabab17c64673573088970
SHA256

d3c3e8da2a5605e86cad1417a6b7a7082307f7a30a6dcd67198fbe6e3ee5b7d0
SHA512

09f602952da21b77cd5bc7d61c9739e55c04c874c2abc52aa9f41fc9ac429546e4aae7606575a31646206cacc94130d0cca565c16e8b8685fb227da7de8888ef

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.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	3020	1496	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2908	1496	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1316	1496	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

1496 EXCEL.EXE

Suspicious use of SetWindowsHookEx 16 IoCs

Processes:

EXCEL.EXE

pid	process
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE
1496	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1496 wrote to memory of 3020	1496	EXCEL.EXE	rundll32.exe
PID 1496 wrote to memory of 3020	1496	EXCEL.EXE	rundll32.exe
PID 1496 wrote to memory of 2908	1496	EXCEL.EXE	rundll32.exe
PID 1496 wrote to memory of 2908	1496	EXCEL.EXE	rundll32.exe
PID 1496 wrote to memory of 1316	1496	EXCEL.EXE	rundll32.exe
PID 1496 wrote to memory of 1316	1496	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-120792975-05132021.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1496

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\lertio.cersw,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3020

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\lertio.cersw1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2908

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\lertio.cersw2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1316

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1316-181-0x0000000000000000-mapping.dmp

Download
memory/1496-114-0x00007FF6DBDA0000-0x00007FF6DF356000-memory.dmp

Filesize
53.7MB

Download
memory/1496-115-0x00007FF882460000-0x00007FF882470000-memory.dmp

Filesize
64KB

Download
memory/1496-116-0x00007FF882460000-0x00007FF882470000-memory.dmp

Filesize
64KB

Download
memory/1496-117-0x00007FF882460000-0x00007FF882470000-memory.dmp

Filesize
64KB

Download
memory/1496-118-0x00007FF882460000-0x00007FF882470000-memory.dmp

Filesize
64KB

Download
memory/1496-121-0x00007FF882460000-0x00007FF882470000-memory.dmp

Filesize
64KB

Download
memory/1496-122-0x00007FF8A28E0000-0x00007FF8A39CE000-memory.dmp

Filesize
16.9MB

Download
memory/1496-123-0x00007FF8A09E0000-0x00007FF8A28D5000-memory.dmp

Filesize
31.0MB

Download
memory/2908-180-0x0000000000000000-mapping.dmp

Download
memory/3020-179-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads