9ade9daf48cb63c929cd8e7ec03ac77ed41d362efaa79453d0eda4553747c404

General

Target
c263e0e75e78480f9aab45b33051e927.xls
Size 118KB
Sample220111-1mlrysheb8
SHA256 9ade9daf48cb63c929cd8e7ec03ac77ed41d362efaa79453d0eda4553747c404
MD5 c263e0e75e78480f9aab45b33051e927
SHA1 7d0237f1533c4871db398ee8e6e022ab88137a68
SHA512 8482fc85d6c9cf44e99abc78a13325d6647f1d7101ad10e8f99863bb1d8000052b3b94ea3947300469572cd9d9444a0ce8731d6c4ab61d91081346a8ae394d3c
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://www.cuneytkocas.com/wp-content/VSnofpES1wO2CcVob/

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	1700	3064	rundll32.exe	68

Blocklisted process makes network request 1 IoCs

flow	pid	Process
44	3184	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
1700	rundll32.exe
3632	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Idqnv\qscanw.ogz	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
3064	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3184	rundll32.exe
3184	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3064	EXCEL.EXE
3064	EXCEL.EXE
3064	EXCEL.EXE
3064	EXCEL.EXE
3064	EXCEL.EXE
3064	EXCEL.EXE
3064	EXCEL.EXE
3064	EXCEL.EXE
3064	EXCEL.EXE
3064	EXCEL.EXE
3064	EXCEL.EXE
3064	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3064 wrote to memory of 1700	3064	EXCEL.EXE	71
PID 3064 wrote to memory of 1700	3064	EXCEL.EXE	71
PID 3064 wrote to memory of 1700	3064	EXCEL.EXE	71
PID 1700 wrote to memory of 3632	1700	rundll32.exe	72
PID 1700 wrote to memory of 3632	1700	rundll32.exe	72
PID 1700 wrote to memory of 3632	1700	rundll32.exe	72
PID 3632 wrote to memory of 1752	3632	rundll32.exe	73
PID 3632 wrote to memory of 1752	3632	rundll32.exe	73
PID 3632 wrote to memory of 1752	3632	rundll32.exe	73
PID 1752 wrote to memory of 3184	1752	rundll32.exe	74
PID 1752 wrote to memory of 3184	1752	rundll32.exe	74
PID 1752 wrote to memory of 3184	1752	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\c263e0e75e78480f9aab45b33051e927.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3064
- 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:1700
- - 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:3632
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Idqnv\qscanw.ogz",FePqhv
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1752
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Idqnv\qscanw.ogz",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:3184

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/3064-119-0x00007FF7F2D00000-0x00007FF7F2D10000-memory.dmp

Download

memory/3064-120-0x0000020D64D40000-0x0000020D64D42000-memory.dmp

Download

memory/3064-122-0x0000020D64D40000-0x0000020D64D42000-memory.dmp

Download

memory/3064-128-0x00007FF7EF4D0000-0x00007FF7EF4E0000-memory.dmp

Download

memory/3064-129-0x00007FF7EF4D0000-0x00007FF7EF4E0000-memory.dmp

Download

memory/3064-121-0x0000020D64D40000-0x0000020D64D42000-memory.dmp

Download

memory/3064-115-0x00007FF7F2D00000-0x00007FF7F2D10000-memory.dmp

Download

memory/3064-117-0x00007FF7F2D00000-0x00007FF7F2D10000-memory.dmp

Download

memory/3064-118-0x00007FF7F2D00000-0x00007FF7F2D10000-memory.dmp

Download

memory/3064-116-0x00007FF7F2D00000-0x00007FF7F2D10000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads