e8aafc15bf0669df883db0e64e8f43f3682a856e74e19e95d9aa6b44aed98ea4

General

Target
SecuriteInfo.com.Heur.26424.5987.xlsm
Size 83KB
Sample220111-3m96naaae4
SHA256 e8aafc15bf0669df883db0e64e8f43f3682a856e74e19e95d9aa6b44aed98ea4
MD5 6cdb76f7dad6cf6032629438661b672a
SHA1 dc76969ddf3f1ea59807fc424b1cebaae55b62f4
SHA512 95acd3b82340c63f4ee5d139fddb56f044fffb1ffaebd25694271bfbbda380e12beb72e590455c23f496a4857378ad3ffdebb86d6b8ae528af20dd2959e13670
MD5 SHA1 SHA512

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper
http://unifiedpharma.com/wp-admin/ildi5K2aTIrdvEobQ/

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	3600	2420	rundll32.exe	67

Blocklisted process makes network request 2 IoCs

flow	pid	Process
41	3212	rundll32.exe
42	3212	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
3600	rundll32.exe
2784	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Nwfrfewojswb\bvsuoa.dav	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\ProcessorNameString	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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
2420	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3212	rundll32.exe
3212	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
2420	EXCEL.EXE
2420	EXCEL.EXE
2420	EXCEL.EXE
2420	EXCEL.EXE
2420	EXCEL.EXE
2420	EXCEL.EXE
2420	EXCEL.EXE
2420	EXCEL.EXE
2420	EXCEL.EXE
2420	EXCEL.EXE
2420	EXCEL.EXE
2420	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2420 wrote to memory of 3600	2420	EXCEL.EXE	71
PID 2420 wrote to memory of 3600	2420	EXCEL.EXE	71
PID 2420 wrote to memory of 3600	2420	EXCEL.EXE	71
PID 3600 wrote to memory of 2784	3600	rundll32.exe	72
PID 3600 wrote to memory of 2784	3600	rundll32.exe	72
PID 3600 wrote to memory of 2784	3600	rundll32.exe	72
PID 2784 wrote to memory of 1340	2784	rundll32.exe	73
PID 2784 wrote to memory of 1340	2784	rundll32.exe	73
PID 2784 wrote to memory of 1340	2784	rundll32.exe	73
PID 1340 wrote to memory of 3212	1340	rundll32.exe	74
PID 1340 wrote to memory of 3212	1340	rundll32.exe	74
PID 1340 wrote to memory of 3212	1340	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.26424.5987.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2420
- 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:3600
- - 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:2784
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Nwfrfewojswb\bvsuoa.dav",Qpoco
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1340
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Nwfrfewojswb\bvsuoa.dav",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:3212

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/2420-118-0x00007FF9E80C0000-0x00007FF9E80D0000-memory.dmp

Download

memory/2420-120-0x000001B1373C0000-0x000001B1373C2000-memory.dmp

Download

memory/2420-121-0x000001B1373C0000-0x000001B1373C2000-memory.dmp

Download

memory/2420-127-0x00007FF9E80C0000-0x00007FF9E80D0000-memory.dmp

Download

memory/2420-119-0x000001B1373C0000-0x000001B1373C2000-memory.dmp

Download

memory/2420-115-0x00007FF9E80C0000-0x00007FF9E80D0000-memory.dmp

Download

memory/2420-117-0x00007FF9E80C0000-0x00007FF9E80D0000-memory.dmp

Download

memory/2420-116-0x00007FF9E80C0000-0x00007FF9E80D0000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads