f5f396e71e90d6098cfb4e727f15f69161c77765936b2460da751ffca6a43955

General

Target
8265dd4b61ddb2dc2ffedcce885f56c3.xls
Size 113KB
Sample220111-rwvxjsgbhn
SHA256 f5f396e71e90d6098cfb4e727f15f69161c77765936b2460da751ffca6a43955
MD5 8265dd4b61ddb2dc2ffedcce885f56c3
SHA1 5af315b8fecfe30e3d0f3cbcae74e03dd5871e9d
SHA512 245d533a8e2195399f2f67796b973e9ed29769a2a9d466d868cde0287c6eea69a7245e2d83fbb61ced30ebdf5b4284c6f9a6dbe5649debed27aa139ee5497aa5
MD5 SHA1 SHA512

Score

10^/10

suricata

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://gaidov.bg/wp-includes/Ug/

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	2080	3160	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
40	520	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2080	rundll32.exe
1876	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Qcruiavifjclzomv\yvuopjlthmy.emc	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
3160	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
520	rundll32.exe
520	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3160	EXCEL.EXE
3160	EXCEL.EXE
3160	EXCEL.EXE
3160	EXCEL.EXE
3160	EXCEL.EXE
3160	EXCEL.EXE
3160	EXCEL.EXE
3160	EXCEL.EXE
3160	EXCEL.EXE
3160	EXCEL.EXE
3160	EXCEL.EXE
3160	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3160 wrote to memory of 2080	3160	EXCEL.EXE	71
PID 3160 wrote to memory of 2080	3160	EXCEL.EXE	71
PID 3160 wrote to memory of 2080	3160	EXCEL.EXE	71
PID 2080 wrote to memory of 1876	2080	rundll32.exe	72
PID 2080 wrote to memory of 1876	2080	rundll32.exe	72
PID 2080 wrote to memory of 1876	2080	rundll32.exe	72
PID 1876 wrote to memory of 3756	1876	rundll32.exe	73
PID 1876 wrote to memory of 3756	1876	rundll32.exe	73
PID 1876 wrote to memory of 3756	1876	rundll32.exe	73
PID 3756 wrote to memory of 520	3756	rundll32.exe	74
PID 3756 wrote to memory of 520	3756	rundll32.exe	74
PID 3756 wrote to memory of 520	3756	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\8265dd4b61ddb2dc2ffedcce885f56c3.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3160
- 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:2080
- - 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:1876
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Qcruiavifjclzomv\yvuopjlthmy.emc",IRCuVeSTXMpM
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3756
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Qcruiavifjclzomv\yvuopjlthmy.emc",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:520

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/3160-118-0x00007FFE01550000-0x00007FFE01560000-memory.dmp

Download

memory/3160-122-0x000001E4F9510000-0x000001E4F9512000-memory.dmp

Download

memory/3160-121-0x000001E4F9510000-0x000001E4F9512000-memory.dmp

Download

memory/3160-120-0x000001E4F9510000-0x000001E4F9512000-memory.dmp

Download

memory/3160-119-0x00007FFE01550000-0x00007FFE01560000-memory.dmp

Download

memory/3160-115-0x00007FFE01550000-0x00007FFE01560000-memory.dmp

Download

memory/3160-117-0x00007FFE01550000-0x00007FFE01560000-memory.dmp

Download

memory/3160-116-0x00007FFE01550000-0x00007FFE01560000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads