5ce3974dd9d1a7f17941c4dee3c1c93ae15d1e8baf393fc89239e8f649c0ffa7

General

Target
5ce3974dd9d1a7f17941c4dee3c1c93ae15d1e8baf393fc89239e8f649c0ffa7.xlsm
Size 84KB
Sample220113-jfabxagdh6
SHA256 5ce3974dd9d1a7f17941c4dee3c1c93ae15d1e8baf393fc89239e8f649c0ffa7
MD5 7c71d9f998873b671e68bfc4c8e669cf
SHA1 01cafc1fbc1c14db1d9104ee2532c562b7a83bdc
SHA512 54cb9b36b73d4d31eb91aba0cac341747dfcebcd762cded85dc7e52d62911f281700a780781675dca7f7c2d5499107d07e4e09bf0c805ef7cba4281b6a781186
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://dichnghiatienganh.com/jvmqawn/BxWl97O8xLgnzr/

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	3168	432	rundll32.exe	68

Blocklisted process makes network request 1 IoCs

flow	pid	Process
44	3952	rundll32.exe

Loads dropped DLL 2 IoCs

pid	Process
3168	rundll32.exe
1296	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Vpcldbsui\anqlnnd.kik	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
432	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3952	rundll32.exe
3952	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
432	EXCEL.EXE
432	EXCEL.EXE
432	EXCEL.EXE
432	EXCEL.EXE
432	EXCEL.EXE
432	EXCEL.EXE
432	EXCEL.EXE
432	EXCEL.EXE
432	EXCEL.EXE
432	EXCEL.EXE
432	EXCEL.EXE
432	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 432 wrote to memory of 3168	432	EXCEL.EXE	72
PID 432 wrote to memory of 3168	432	EXCEL.EXE	72
PID 432 wrote to memory of 3168	432	EXCEL.EXE	72
PID 3168 wrote to memory of 1296	3168	rundll32.exe	73
PID 3168 wrote to memory of 1296	3168	rundll32.exe	73
PID 3168 wrote to memory of 1296	3168	rundll32.exe	73
PID 1296 wrote to memory of 412	1296	rundll32.exe	74
PID 1296 wrote to memory of 412	1296	rundll32.exe	74
PID 1296 wrote to memory of 412	1296	rundll32.exe	74
PID 412 wrote to memory of 3952	412	rundll32.exe	75
PID 412 wrote to memory of 3952	412	rundll32.exe	75
PID 412 wrote to memory of 3952	412	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\5ce3974dd9d1a7f17941c4dee3c1c93ae15d1e8baf393fc89239e8f649c0ffa7.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:432
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\einl.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:3168
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\einl.ocx",DllRegisterServer
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:1296
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Vpcldbsui\anqlnnd.kik",ZrHX
      4⤵
      Suspicious use of WriteProcessMemory
      PID:412
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Vpcldbsui\anqlnnd.kik",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:3952

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/432-123-0x0000027C67850000-0x0000027C67852000-memory.dmp

Download

memory/432-122-0x0000027C67850000-0x0000027C67852000-memory.dmp

Download

memory/432-124-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

Download

memory/432-125-0x0000027C67850000-0x0000027C67852000-memory.dmp

Download

memory/432-131-0x00007FF937180000-0x00007FF937190000-memory.dmp

Download

memory/432-132-0x00007FF937180000-0x00007FF937190000-memory.dmp

Download

memory/432-118-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

Download

memory/432-121-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

Download

memory/432-120-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

Download

memory/432-119-0x00007FF93ACF0000-0x00007FF93AD00000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads