fc8a0b0d90635b0da61d85b8958db1432cfd8e40fe967583f6ba012ae85f2c48

General

Target
31ee91c0780d87161c509e3e4f87c1c1.xls
Size 113KB
Sample220112-dk69jsbaan
SHA256 fc8a0b0d90635b0da61d85b8958db1432cfd8e40fe967583f6ba012ae85f2c48
MD5 31ee91c0780d87161c509e3e4f87c1c1
SHA1 237ee9ef2c636a7ca3f2b11ad56348684bb3413c
SHA512 ce0b08a58bc9cebb3644e30afda94eca29652a30aba7c99a0330c50d4e9508702fac93da22689c370b8b5431ba5f94e55ed9987e0aa3f41be13546f53c99ae4a
MD5 SHA1 SHA512

Score

10^/10

suricata

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	1004	2488	rundll32.exe	67

suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata

Blocklisted process makes network request 2 IoCs

flow	pid	Process
49	1136	rundll32.exe
50	1136	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
1004	rundll32.exe
3676	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Izqouqlkfuk\zuuogrif.kmx	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\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

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
2488	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2488	EXCEL.EXE
2488	EXCEL.EXE
2488	EXCEL.EXE
2488	EXCEL.EXE
2488	EXCEL.EXE
2488	EXCEL.EXE
2488	EXCEL.EXE
2488	EXCEL.EXE
2488	EXCEL.EXE
2488	EXCEL.EXE
2488	EXCEL.EXE
2488	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2488 wrote to memory of 1004	2488	EXCEL.EXE	72
PID 2488 wrote to memory of 1004	2488	EXCEL.EXE	72
PID 2488 wrote to memory of 1004	2488	EXCEL.EXE	72
PID 1004 wrote to memory of 3676	1004	rundll32.exe	73
PID 1004 wrote to memory of 3676	1004	rundll32.exe	73
PID 1004 wrote to memory of 3676	1004	rundll32.exe	73
PID 3676 wrote to memory of 2204	3676	rundll32.exe	74
PID 3676 wrote to memory of 2204	3676	rundll32.exe	74
PID 3676 wrote to memory of 2204	3676	rundll32.exe	74
PID 2204 wrote to memory of 1136	2204	rundll32.exe	75
PID 2204 wrote to memory of 1136	2204	rundll32.exe	75
PID 2204 wrote to memory of 1136	2204	rundll32.exe	75

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\31ee91c0780d87161c509e3e4f87c1c1.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2488
- 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:1004
- - 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:3676
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Izqouqlkfuk\zuuogrif.kmx",bBEIffKgbHvKwuM
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2204
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Izqouqlkfuk\zuuogrif.kmx",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        
        PID:1136

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/2488-119-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

Download

memory/2488-123-0x000001E90A740000-0x000001E90A742000-memory.dmp

Download

memory/2488-122-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

Download

memory/2488-121-0x000001E90A740000-0x000001E90A742000-memory.dmp

Download

memory/2488-120-0x000001E90A740000-0x000001E90A742000-memory.dmp

Download

memory/2488-116-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

Download

memory/2488-117-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

Download

memory/2488-118-0x00007FF98ABC0000-0x00007FF98ABD0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads