80fa95a8d7a45e7209ac28ca06d9c91f4a781d17e2ee0477a72538e615db557e

General

Target
Claim115189502003292021.xlsm
Size 173KB
Sample210329-ve18qsf2js
SHA256 80fa95a8d7a45e7209ac28ca06d9c91f4a781d17e2ee0477a72538e615db557e
MD5 a259328d5f33962369d09c774a49c017
SHA1 de5488e2a868c1a9598d50ce3f86724159613537
SHA512 0cfc540adbd1435d3eff5dc96d3601d0969204364283c31f6875404b0863c69ba2c352741ca945b6bc15e1943e0dc1638d838e56d46376466c397f11a724e42c
MD5 SHA1 SHA512

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.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2328	504	rundll32.exe	67
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2784	504	rundll32.exe	67
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3904	504	rundll32.exe	67

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

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

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

pid	Process
504	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE
504	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 504 wrote to memory of 2328	504	EXCEL.EXE	81
PID 504 wrote to memory of 2328	504	EXCEL.EXE	81
PID 504 wrote to memory of 2784	504	EXCEL.EXE	82
PID 504 wrote to memory of 2784	504	EXCEL.EXE	82
PID 504 wrote to memory of 3904	504	EXCEL.EXE	83
PID 504 wrote to memory of 3904	504	EXCEL.EXE	83

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\Claim115189502003292021.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:504
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\Hodas.vyur,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:2328
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\Hodas.vyur1,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:2784
- C:\Windows\SYSTEM32\rundll32.exe
  rundll32 ..\Hodas.vyur2,DllRegisterServer
  2⤵
  - Process spawned unexpected child process
  PID:3904

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

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Downloads

memory/504-2-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

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memory/504-3-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

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memory/504-4-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

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memory/504-5-0x00007FF7DFCE0000-0x00007FF7DFCF0000-memory.dmp

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memory/504-6-0x00007FF8030C0000-0x00007FF8036F7000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads