04b46a5cf4add15d6d3bf71449ee547eac6d84c841daf418dbb47b00a4361af5

General

Target

vvv.xlsm
Size

328KB
MD5

e5b6bf1c7ead9f74dc763021ce195b42
SHA1

1a759d31f0c6d8b1f5e3dd389bc78d2c20718e82
SHA256

04b46a5cf4add15d6d3bf71449ee547eac6d84c841daf418dbb47b00a4361af5
SHA512

c1cf06d29a1a1a3aa6505abdc51908373707790c5eeac3d9ad58393ba7e698d453d1a2f260da107453d8ee4f3c2cb148c3ae0a9f7f90bfb9d37b093acee88f11
SSDEEP

6144:eRMlgE+mJ9ABc/nv5k8IKAhBfsOwmLgzLc1pTcsGEdDIPmhsB0vRakfzeQZNPQ:eRMmEv2Bc/nvm8IKABfsYOmauFzQ

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://193.203.202.55/44300,5396033565.dat

xlm40.dropper

http://190.14.37.245/44300,5396033565.dat

xlm40.dropper

http://194.67.214.216/44300,5396033565.dat

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	496	4044	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4688	4044	rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1740	4044	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

4044 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4044 EXCEL.EXE
4044 EXCEL.EXE

Suspicious use of SetWindowsHookEx 20 IoCs

Processes:

EXCEL.EXE

pid	process
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE
4044	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4044 wrote to memory of 496	4044	EXCEL.EXE	rundll32.exe
PID 4044 wrote to memory of 496	4044	EXCEL.EXE	rundll32.exe
PID 4044 wrote to memory of 4688	4044	EXCEL.EXE	rundll32.exe
PID 4044 wrote to memory of 4688	4044	EXCEL.EXE	rundll32.exe
PID 4044 wrote to memory of 1740	4044	EXCEL.EXE	rundll32.exe
PID 4044 wrote to memory of 1740	4044	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\vvv.xlsm"
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:4044

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Klos.viters,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:496

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Klos.viters1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4688

C:\Windows\SYSTEM32\rundll32.exe
rundll32 ..\Klos.viters2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:1740

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

Replay Monitor

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Downloads

memory/4044-133-0x00007FF963AD0000-0x00007FF963AE0000-memory.dmp

Filesize
64KB

Download
memory/4044-134-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-136-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-137-0x00007FF963AD0000-0x00007FF963AE0000-memory.dmp

Filesize
64KB

Download
memory/4044-138-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-139-0x00007FF963AD0000-0x00007FF963AE0000-memory.dmp

Filesize
64KB

Download
memory/4044-141-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-140-0x00007FF963AD0000-0x00007FF963AE0000-memory.dmp

Filesize
64KB

Download
memory/4044-142-0x00007FF961860000-0x00007FF961870000-memory.dmp

Filesize
64KB

Download
memory/4044-143-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-135-0x00007FF963AD0000-0x00007FF963AE0000-memory.dmp

Filesize
64KB

Download
memory/4044-144-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-146-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-147-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-145-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-149-0x00007FF961860000-0x00007FF961870000-memory.dmp

Filesize
64KB

Download
memory/4044-148-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-150-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-151-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-152-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-153-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-154-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-156-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download
memory/4044-160-0x00007FF9A3A50000-0x00007FF9A3C45000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads