efe94cedd53de019cc10da7939e5ea9a62de62e66cb917b3d2ffcc8f2fba969d

General

Target

efe94cedd53de019cc10da7939e5ea9a62de62e66cb917b3d2ffcc8f2fba969d.xlsm
Size

83KB
MD5

8a6933b776b90c3e5610c67d12f51f79
SHA1

5656531bdbe27bfec2fc8b51047127e50e033ebe
SHA256

efe94cedd53de019cc10da7939e5ea9a62de62e66cb917b3d2ffcc8f2fba969d
SHA512

c93f25f3d387e6dc3fd503553de7795ee6b09e9b1d5e911174fd5c13a9ba3a862fa88d0f19f7444077992ef51af433f71a5df3b30dd9710ce9f8f2d64aee3135

Score

10^/10

suricata

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://adi.iswks.com/assets/hO1v71pqfNN/

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	3740	1480	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 3 IoCs

flow	pid	Process
36	4868	rundll32.exe
37	4868	rundll32.exe
38	4868	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3740	rundll32.exe
2328	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Uvliappbsz\gzrlmsrclcjcug.ngt	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1480	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4868	rundll32.exe
4868	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE
1480	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1480 wrote to memory of 3740	1480	EXCEL.EXE	71
PID 1480 wrote to memory of 3740	1480	EXCEL.EXE	71
PID 1480 wrote to memory of 3740	1480	EXCEL.EXE	71
PID 3740 wrote to memory of 2328	3740	rundll32.exe	72
PID 3740 wrote to memory of 2328	3740	rundll32.exe	72
PID 3740 wrote to memory of 2328	3740	rundll32.exe	72
PID 2328 wrote to memory of 2860	2328	rundll32.exe	73
PID 2328 wrote to memory of 2860	2328	rundll32.exe	73
PID 2328 wrote to memory of 2860	2328	rundll32.exe	73
PID 2860 wrote to memory of 4868	2860	rundll32.exe	74
PID 2860 wrote to memory of 4868	2860	rundll32.exe	74
PID 2860 wrote to memory of 4868	2860	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\efe94cedd53de019cc10da7939e5ea9a62de62e66cb917b3d2ffcc8f2fba969d.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1480
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\wxeu.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:3740
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\wxeu.ocx",DllRegisterServer
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:2328
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Uvliappbsz\gzrlmsrclcjcug.ngt",nBHF
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2860
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Uvliappbsz\gzrlmsrclcjcug.ngt",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:4868

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/1480-119-0x000002B5EC0B0000-0x000002B5EC0B2000-memory.dmp

Filesize
8KB

Download
memory/1480-115-0x00007FF836310000-0x00007FF836320000-memory.dmp

Filesize
64KB

Download
memory/1480-120-0x000002B5EC0B0000-0x000002B5EC0B2000-memory.dmp

Filesize
8KB

Download
memory/1480-121-0x000002B5EC0B0000-0x000002B5EC0B2000-memory.dmp

Filesize
8KB

Download
memory/1480-126-0x00007FF836310000-0x00007FF836320000-memory.dmp

Filesize
64KB

Download
memory/1480-128-0x00007FF832AF0000-0x00007FF832B00000-memory.dmp

Filesize
64KB

Download
memory/1480-129-0x00007FF832AF0000-0x00007FF832B00000-memory.dmp

Filesize
64KB

Download
memory/1480-116-0x00007FF836310000-0x00007FF836320000-memory.dmp

Filesize
64KB

Download
memory/1480-118-0x00007FF836310000-0x00007FF836320000-memory.dmp

Filesize
64KB

Download
memory/1480-117-0x00007FF836310000-0x00007FF836320000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads