fb59d08c1c00da6e08768d759d984922ef2726cade6ed27fe5713a79e7b7022e

General

Target
3d43cf52327d8804c8d141c406fa26ea.xls
Size 113KB
Sample220112-a474eaaefq
SHA256 fb59d08c1c00da6e08768d759d984922ef2726cade6ed27fe5713a79e7b7022e
MD5 3d43cf52327d8804c8d141c406fa26ea
SHA1 8cf1491e429fab3a38849c897d54a94553c5266a
SHA512 a7c6aed9544d82b5311072cd1102076c165a9df2a04e097820f63765a9e1ad9095812471041ff718578727007d91b34f4c0e67622315aa3b47d79b4896f6d572
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	872	712	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	2208	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
872	rundll32.exe
2136	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Jflbasnsam\jmpvbaetk.atp	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
712	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2208	rundll32.exe
2208	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
712	EXCEL.EXE
712	EXCEL.EXE
712	EXCEL.EXE
712	EXCEL.EXE
712	EXCEL.EXE
712	EXCEL.EXE
712	EXCEL.EXE
712	EXCEL.EXE
712	EXCEL.EXE
712	EXCEL.EXE
712	EXCEL.EXE
712	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 712 wrote to memory of 872	712	EXCEL.EXE	72
PID 712 wrote to memory of 872	712	EXCEL.EXE	72
PID 712 wrote to memory of 872	712	EXCEL.EXE	72
PID 872 wrote to memory of 2136	872	rundll32.exe	73
PID 872 wrote to memory of 2136	872	rundll32.exe	73
PID 872 wrote to memory of 2136	872	rundll32.exe	73
PID 2136 wrote to memory of 3300	2136	rundll32.exe	74
PID 2136 wrote to memory of 3300	2136	rundll32.exe	74
PID 2136 wrote to memory of 3300	2136	rundll32.exe	74
PID 3300 wrote to memory of 2208	3300	rundll32.exe	75
PID 3300 wrote to memory of 2208	3300	rundll32.exe	75
PID 3300 wrote to memory of 2208	3300	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\3d43cf52327d8804c8d141c406fa26ea.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:712
- 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:872
- - 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:2136
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Jflbasnsam\jmpvbaetk.atp",RgTfwJqCe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3300
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Jflbasnsam\jmpvbaetk.atp",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:2208

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/712-118-0x00007FFEF3A30000-0x00007FFEF3A40000-memory.dmp

Download

memory/712-116-0x00007FFEF3A30000-0x00007FFEF3A40000-memory.dmp

Download

memory/712-120-0x000002A7DF4D0000-0x000002A7DF4D2000-memory.dmp

Download

memory/712-121-0x000002A7DF4D0000-0x000002A7DF4D2000-memory.dmp

Download

memory/712-122-0x000002A7DF4D0000-0x000002A7DF4D2000-memory.dmp

Download

memory/712-128-0x00007FFEEFFC0000-0x00007FFEEFFD0000-memory.dmp

Download

memory/712-129-0x00007FFEEFFC0000-0x00007FFEEFFD0000-memory.dmp

Download

memory/712-115-0x00007FFEF3A30000-0x00007FFEF3A40000-memory.dmp

Download

memory/712-119-0x00007FFEF3A30000-0x00007FFEF3A40000-memory.dmp

Download

memory/712-117-0x00007FFEF3A30000-0x00007FFEF3A40000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads