14242004bc97b6ca2b2b40e09b270a056e3d87aa4b37251f79709b26eeec3a5c

General

Target
SecuriteInfo.com.Heur.24407.21788.xls
Size 113KB
Sample220111-shwglagcdp
SHA256 14242004bc97b6ca2b2b40e09b270a056e3d87aa4b37251f79709b26eeec3a5c
MD5 b41cd587a370f7eb5d69a0402266a6f7
SHA1 ddba5d5a0ee4d101a60c166a47694e0b95089485
SHA512 0f4a52ee8b5dd0fa7bec09c48e3643e71350154f7fc79d3d0c29f3b4a860e77415ad5ef4d3df0367e70b56aafa814021c0688bcb1827efa70f5cf94e819118f3
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	3272	2060	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
41	3536	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3272	rundll32.exe
3396	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Astzv\hnuugejyg.hdd	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\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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
2060	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3536	rundll32.exe
3536	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE
2060	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2060 wrote to memory of 3272	2060	EXCEL.EXE	72
PID 2060 wrote to memory of 3272	2060	EXCEL.EXE	72
PID 2060 wrote to memory of 3272	2060	EXCEL.EXE	72
PID 3272 wrote to memory of 3396	3272	rundll32.exe	73
PID 3272 wrote to memory of 3396	3272	rundll32.exe	73
PID 3272 wrote to memory of 3396	3272	rundll32.exe	73
PID 3396 wrote to memory of 2952	3396	rundll32.exe	74
PID 3396 wrote to memory of 2952	3396	rundll32.exe	74
PID 3396 wrote to memory of 2952	3396	rundll32.exe	74
PID 2952 wrote to memory of 3536	2952	rundll32.exe	75
PID 2952 wrote to memory of 3536	2952	rundll32.exe	75
PID 2952 wrote to memory of 3536	2952	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\SecuriteInfo.com.Heur.24407.21788.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2060
- 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:3272
- - 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:3396
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Astzv\hnuugejyg.hdd",kZLhruUKxm
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2952
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Astzv\hnuugejyg.hdd",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:3536

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/2060-118-0x00007FFDEE7B0000-0x00007FFDEE7C0000-memory.dmp

Download

memory/2060-119-0x00007FFDEE7B0000-0x00007FFDEE7C0000-memory.dmp

Download

memory/2060-120-0x000001A62DB40000-0x000001A62DB42000-memory.dmp

Download

memory/2060-121-0x000001A62DB40000-0x000001A62DB42000-memory.dmp

Download

memory/2060-122-0x000001A62DB40000-0x000001A62DB42000-memory.dmp

Download

memory/2060-115-0x00007FFDEE7B0000-0x00007FFDEE7C0000-memory.dmp

Download

memory/2060-117-0x00007FFDEE7B0000-0x00007FFDEE7C0000-memory.dmp

Download

memory/2060-116-0x00007FFDEE7B0000-0x00007FFDEE7C0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads