a7fe36211a0be63df4c3929830b8fc4e21fc0548b5446377ce9c83b3d1fd9339

General

Target
e97673a525f949900a991fe44395ba17.xls
Size 113KB
Sample220111-26t34sabgn
SHA256 a7fe36211a0be63df4c3929830b8fc4e21fc0548b5446377ce9c83b3d1fd9339
MD5 e97673a525f949900a991fe44395ba17
SHA1 2bca63b1f0b2916a4ca9af726d8f419b37a8e863
SHA512 8c8d5c9eadf144dfdbda5fd2dfab4e3c1059d1b6928fb04cabca7ae0a5eae09e9f02395eef432f79d7f152d26431abd689bbc06e7e34e1fbf98a000499126fb1
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	3060	3856	rundll32.exe	68

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

Blocklisted process makes network request 1 IoCs

flow	pid	Process
43	740	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3060	rundll32.exe
2280	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Kerrsiyqbkgqwe\jdcqtmn.fzm	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 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 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
3856	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
740	rundll32.exe
740	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3856	EXCEL.EXE
3856	EXCEL.EXE
3856	EXCEL.EXE
3856	EXCEL.EXE
3856	EXCEL.EXE
3856	EXCEL.EXE
3856	EXCEL.EXE
3856	EXCEL.EXE
3856	EXCEL.EXE
3856	EXCEL.EXE
3856	EXCEL.EXE
3856	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3856 wrote to memory of 3060	3856	EXCEL.EXE	72
PID 3856 wrote to memory of 3060	3856	EXCEL.EXE	72
PID 3856 wrote to memory of 3060	3856	EXCEL.EXE	72
PID 3060 wrote to memory of 2280	3060	rundll32.exe	73
PID 3060 wrote to memory of 2280	3060	rundll32.exe	73
PID 3060 wrote to memory of 2280	3060	rundll32.exe	73
PID 2280 wrote to memory of 1428	2280	rundll32.exe	74
PID 2280 wrote to memory of 1428	2280	rundll32.exe	74
PID 2280 wrote to memory of 1428	2280	rundll32.exe	74
PID 1428 wrote to memory of 740	1428	rundll32.exe	75
PID 1428 wrote to memory of 740	1428	rundll32.exe	75
PID 1428 wrote to memory of 740	1428	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\e97673a525f949900a991fe44395ba17.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3856
- 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:3060
- - 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:2280
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Kerrsiyqbkgqwe\jdcqtmn.fzm",FnIlRhoZEuubz
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1428
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Kerrsiyqbkgqwe\jdcqtmn.fzm",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:740

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/3856-118-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Download

memory/3856-122-0x000001E498C10000-0x000001E498C12000-memory.dmp

Download

memory/3856-121-0x000001E498C10000-0x000001E498C12000-memory.dmp

Download

memory/3856-120-0x000001E498C10000-0x000001E498C12000-memory.dmp

Download

memory/3856-119-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Download

memory/3856-115-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Download

memory/3856-117-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Download

memory/3856-116-0x00007FF8AEA50000-0x00007FF8AEA60000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads