aa65a34067b0c50e89c1078d0c7ff08de43e5036241404574f846265de6ff6bd

General

Target

3e47f75fb9dbb067e2b47049666fc1d2.xls
Size

113KB
MD5

3e47f75fb9dbb067e2b47049666fc1d2
SHA1

df51ed9b3c9bc6bbef920f2de3bedeccda5217c3
SHA256

aa65a34067b0c50e89c1078d0c7ff08de43e5036241404574f846265de6ff6bd
SHA512

878839b9037053905384417e505741ef74622804eb384f84d1cd1b8b96eb8b0521d6f248f5a9ae635c2367cab17669db248156ef0ca5f11d6a54f3adc0d118eb

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://ordinateur.ogivart.us/editor/Qpo7OAOnbe/

Signatures

Process spawned unexpected child process 1 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	3544	524	rundll32.exe	68

Blocklisted process makes network request 1 IoCs

flow	pid	Process
42	3276	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3544	rundll32.exe
2120	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Euedlbnqzqueuy\jrsmmijzho.kbs	rundll32.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

pid	Process
524	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3276	rundll32.exe
3276	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
524	EXCEL.EXE
524	EXCEL.EXE
524	EXCEL.EXE
524	EXCEL.EXE
524	EXCEL.EXE
524	EXCEL.EXE
524	EXCEL.EXE
524	EXCEL.EXE
524	EXCEL.EXE
524	EXCEL.EXE
524	EXCEL.EXE
524	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 524 wrote to memory of 3544	524	EXCEL.EXE	71
PID 524 wrote to memory of 3544	524	EXCEL.EXE	71
PID 524 wrote to memory of 3544	524	EXCEL.EXE	71
PID 3544 wrote to memory of 2120	3544	rundll32.exe	72
PID 3544 wrote to memory of 2120	3544	rundll32.exe	72
PID 3544 wrote to memory of 2120	3544	rundll32.exe	72
PID 2120 wrote to memory of 3204	2120	rundll32.exe	73
PID 2120 wrote to memory of 3204	2120	rundll32.exe	73
PID 2120 wrote to memory of 3204	2120	rundll32.exe	73
PID 3204 wrote to memory of 3276	3204	rundll32.exe	74
PID 3204 wrote to memory of 3276	3204	rundll32.exe	74
PID 3204 wrote to memory of 3276	3204	rundll32.exe	74

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\3e47f75fb9dbb067e2b47049666fc1d2.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:524
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\sun.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:3544
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\sun.ocx",DllRegisterServer
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:2120
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Euedlbnqzqueuy\jrsmmijzho.kbs",xpFerDiXXZs
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3204
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Euedlbnqzqueuy\jrsmmijzho.kbs",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:3276

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/524-119-0x00007FF989EC0000-0x00007FF989ED0000-memory.dmp

Filesize
64KB

Download
memory/524-120-0x000001BDB41E0000-0x000001BDB41E2000-memory.dmp

Filesize
8KB

Download
memory/524-121-0x000001BDB41E0000-0x000001BDB41E2000-memory.dmp

Filesize
8KB

Download
memory/524-122-0x00007FF989EC0000-0x00007FF989ED0000-memory.dmp

Filesize
64KB

Download
memory/524-123-0x000001BDB41E0000-0x000001BDB41E2000-memory.dmp

Filesize
8KB

Download
memory/524-116-0x00007FF989EC0000-0x00007FF989ED0000-memory.dmp

Filesize
64KB

Download
memory/524-118-0x00007FF989EC0000-0x00007FF989ED0000-memory.dmp

Filesize
64KB

Download
memory/524-117-0x00007FF989EC0000-0x00007FF989ED0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads