44375fae220fa8f7a7b515b8e1e77037fc8138819eb2be2ea5fe090907169db7

General

Target
41eee17439144fc78b1bdcb1939d2625.xls
Size 118KB
Sample220111-zhkhnahdfr
SHA256 44375fae220fa8f7a7b515b8e1e77037fc8138819eb2be2ea5fe090907169db7
MD5 41eee17439144fc78b1bdcb1939d2625
SHA1 44207ac5e12d72a62bc440115c9a6ef6498f6778
SHA512 a1a1a842b8282a800e695e2e2e15bcefe5c0d75ce2d024787996ddade7636412a754b6c3b8e53f5a137313fbc9b88756a736e485cc4d9d376e909258bd36d477
MD5 SHA1 SHA512

Score

10^/10

suricata

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
https://wordpressdes.vanzolini-gte.org.br/fundacaotelefonica.org.br/gAbC4QpJYI/

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	2596	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 2 IoCs

flow	pid	Process
40	1200	rundll32.exe
42	1200	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2596	rundll32.exe
2700	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Xarswhup\xwdxqwxrmg.quv	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
1480	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1200	rundll32.exe
1200	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 2596	1480	EXCEL.EXE	69
PID 1480 wrote to memory of 2596	1480	EXCEL.EXE	69
PID 1480 wrote to memory of 2596	1480	EXCEL.EXE	69
PID 2596 wrote to memory of 2700	2596	rundll32.exe	70
PID 2596 wrote to memory of 2700	2596	rundll32.exe	70
PID 2596 wrote to memory of 2700	2596	rundll32.exe	70
PID 2700 wrote to memory of 4804	2700	rundll32.exe	71
PID 2700 wrote to memory of 4804	2700	rundll32.exe	71
PID 2700 wrote to memory of 4804	2700	rundll32.exe	71
PID 4804 wrote to memory of 1200	4804	rundll32.exe	72
PID 4804 wrote to memory of 1200	4804	rundll32.exe	72
PID 4804 wrote to memory of 1200	4804	rundll32.exe	72

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\41eee17439144fc78b1bdcb1939d2625.xls"
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 ..\sun.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2596
- - 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:2700
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Xarswhup\xwdxqwxrmg.quv",vPDgYQRVwb
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4804
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Xarswhup\xwdxqwxrmg.quv",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:1200

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/1480-120-0x00007FF836310000-0x00007FF836320000-memory.dmp

Download

memory/1480-122-0x0000029B04070000-0x0000029B04072000-memory.dmp

Download

memory/1480-123-0x0000029B04070000-0x0000029B04072000-memory.dmp

Download

memory/1480-124-0x0000029B04070000-0x0000029B04072000-memory.dmp

Download

memory/1480-121-0x00007FF836310000-0x00007FF836320000-memory.dmp

Download

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

Download

memory/1480-119-0x00007FF836310000-0x00007FF836320000-memory.dmp

Download

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

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads