84ec275feff2f9ea90abe8b02546abc7c33a5a49c0fdcd22686707cac87e7ad2

General

Target
SecuriteInfo.com.Heur.6443.2240.xlsm
Size 83KB
Sample220112-etndgabae8
SHA256 84ec275feff2f9ea90abe8b02546abc7c33a5a49c0fdcd22686707cac87e7ad2
MD5 c590a1bb2244a27aedb5deb69103d0f3
SHA1 454b85f0f65f3b9bfa95937ac4f8ecdbe07b8443
SHA512 195ad0efdb0d7426a43bf2b0ea91998dbc1e1d5a5a1ce2e992d4c58474a461bb27eb392462f5b0278e7029e76466ef65eeb3fce3ec29f8461b78bdce304b8f4d
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://www.be-pu.com/4.hana/Y1XWpb1zWMRD/

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	3708	528	rundll32.exe	68

Blocklisted process makes network request 1 IoCs

flow	pid	Process
41	3152	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3708	rundll32.exe
2140	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Titqtxfs\aenekhgzizs.vek	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
528	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3152	rundll32.exe
3152	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE
528	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 528 wrote to memory of 3708	528	EXCEL.EXE	71
PID 528 wrote to memory of 3708	528	EXCEL.EXE	71
PID 528 wrote to memory of 3708	528	EXCEL.EXE	71
PID 3708 wrote to memory of 2140	3708	rundll32.exe	72
PID 3708 wrote to memory of 2140	3708	rundll32.exe	72
PID 3708 wrote to memory of 2140	3708	rundll32.exe	72
PID 2140 wrote to memory of 1208	2140	rundll32.exe	73
PID 2140 wrote to memory of 1208	2140	rundll32.exe	73
PID 2140 wrote to memory of 1208	2140	rundll32.exe	73
PID 1208 wrote to memory of 3152	1208	rundll32.exe	74
PID 1208 wrote to memory of 3152	1208	rundll32.exe	74
PID 1208 wrote to memory of 3152	1208	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\SecuriteInfo.com.Heur.6443.2240.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:528
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\adi.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:3708
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\adi.ocx",DllRegisterServer
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:2140
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Titqtxfs\aenekhgzizs.vek",ZgYtmdaQgemJACm
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1208
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Titqtxfs\aenekhgzizs.vek",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:3152

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/528-119-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

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memory/528-116-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Download

memory/528-121-0x00000151D6520000-0x00000151D6522000-memory.dmp

Download

memory/528-120-0x00000151D6520000-0x00000151D6522000-memory.dmp

Download

memory/528-122-0x00000151D6520000-0x00000151D6522000-memory.dmp

Download

memory/528-128-0x00007FFE8D940000-0x00007FFE8D950000-memory.dmp

Download

memory/528-129-0x00007FFE8D940000-0x00007FFE8D950000-memory.dmp

Download

memory/528-118-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Download

memory/528-117-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Download

memory/528-115-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads