93f2d3c86229e3bcb68a7d438023c3d13faab8d441501184deae4191276d2901

General

Target
b4b963f8b1b93344fbe3f4aca8a626a4.xls
Size 113KB
Sample220111-njajasffdr
SHA256 93f2d3c86229e3bcb68a7d438023c3d13faab8d441501184deae4191276d2901
MD5 b4b963f8b1b93344fbe3f4aca8a626a4
SHA1 4d33f79e2e8b1abdbce423412077c7b5452ececa
SHA512 e2f9616ed830fe19f8cb43bf22a4c88a1d9295d0fdfc8b33cb8b8f09b43cabf61839f5e58ef8c00bf910ab3172c8212b1722bb674b7f34bef9f930f23dc474eb
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	1352	2480	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
42	2124	rundll32.exe
43	2124	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
1352	rundll32.exe
740	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Qiabftadoabh\bggpcxjzy.iht	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
2480	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2124	rundll32.exe
2124	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2480	EXCEL.EXE
2480	EXCEL.EXE
2480	EXCEL.EXE
2480	EXCEL.EXE
2480	EXCEL.EXE
2480	EXCEL.EXE
2480	EXCEL.EXE
2480	EXCEL.EXE
2480	EXCEL.EXE
2480	EXCEL.EXE
2480	EXCEL.EXE
2480	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 1352	2480	EXCEL.EXE	71
PID 2480 wrote to memory of 1352	2480	EXCEL.EXE	71
PID 2480 wrote to memory of 1352	2480	EXCEL.EXE	71
PID 1352 wrote to memory of 740	1352	rundll32.exe	72
PID 1352 wrote to memory of 740	1352	rundll32.exe	72
PID 1352 wrote to memory of 740	1352	rundll32.exe	72
PID 740 wrote to memory of 2508	740	rundll32.exe	73
PID 740 wrote to memory of 2508	740	rundll32.exe	73
PID 740 wrote to memory of 2508	740	rundll32.exe	73
PID 2508 wrote to memory of 2124	2508	rundll32.exe	74
PID 2508 wrote to memory of 2124	2508	rundll32.exe	74
PID 2508 wrote to memory of 2124	2508	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\b4b963f8b1b93344fbe3f4aca8a626a4.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2480
- 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:1352
- - 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:740
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Qiabftadoabh\bggpcxjzy.iht",keqTxc
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2508
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Qiabftadoabh\bggpcxjzy.iht",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:2124

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/2480-119-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

Download

memory/2480-122-0x00000274C02E0000-0x00000274C02E2000-memory.dmp

Download

memory/2480-128-0x00007FF7DCCC0000-0x00007FF7DCCD0000-memory.dmp

Download

memory/2480-129-0x00007FF7DCCC0000-0x00007FF7DCCD0000-memory.dmp

Download

memory/2480-120-0x00000274C02E0000-0x00000274C02E2000-memory.dmp

Download

memory/2480-121-0x00000274C02E0000-0x00000274C02E2000-memory.dmp

Download

memory/2480-115-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

Download

memory/2480-118-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

Download

memory/2480-117-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

Download

memory/2480-116-0x00007FF7E0830000-0x00007FF7E0840000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads