80f732153350e276a2b676506c38904e02387501bbd7946340ee90858bcc5f79

General

Target

80f732153350e276a2b676506c38904e02387501bbd7946340ee90858bcc5f79.xlsm
Size

82KB
MD5

cddd70be02fe3a31ec6a738deb05c6c1
SHA1

21ad389c6dd1ea3b3bd7b4080f06a8d2c1da5b8c
SHA256

80f732153350e276a2b676506c38904e02387501bbd7946340ee90858bcc5f79
SHA512

6354c04afccb34262f4a816e99ee1c59604041372f1083d63ab15685607a551ead68b8663f175d3ff487779a71edf85b71dcff4dcd5810a05be651d8e3a5bc37

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://insertcatherreview.xyz/wp-includes/UUlQtC51SL8IzBT/

xlm40.dropper

http://bbc-us.com/wp-admin/48r6tiF1qTMqrAO/

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	2028	3616	rundll32.exe	67

Blocklisted process makes network request 3 IoCs

flow	pid	Process
43	4584	rundll32.exe
44	4584	rundll32.exe
46	4584	rundll32.exe

Downloads MZ/PE file

Loads dropped DLL 2 IoCs

pid	Process
2028	rundll32.exe
2956	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Hjdicjbb\mkczcuvbuwnnhpt.tkj	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
3616	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4584	rundll32.exe
4584	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3616	EXCEL.EXE
3616	EXCEL.EXE
3616	EXCEL.EXE
3616	EXCEL.EXE
3616	EXCEL.EXE
3616	EXCEL.EXE
3616	EXCEL.EXE
3616	EXCEL.EXE
3616	EXCEL.EXE
3616	EXCEL.EXE
3616	EXCEL.EXE
3616	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3616 wrote to memory of 2028	3616	EXCEL.EXE	71
PID 3616 wrote to memory of 2028	3616	EXCEL.EXE	71
PID 3616 wrote to memory of 2028	3616	EXCEL.EXE	71
PID 2028 wrote to memory of 2956	2028	rundll32.exe	72
PID 2028 wrote to memory of 2956	2028	rundll32.exe	72
PID 2028 wrote to memory of 2956	2028	rundll32.exe	72
PID 2956 wrote to memory of 4624	2956	rundll32.exe	73
PID 2956 wrote to memory of 4624	2956	rundll32.exe	73
PID 2956 wrote to memory of 4624	2956	rundll32.exe	73
PID 4624 wrote to memory of 4584	4624	rundll32.exe	74
PID 4624 wrote to memory of 4584	4624	rundll32.exe	74
PID 4624 wrote to memory of 4584	4624	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\80f732153350e276a2b676506c38904e02387501bbd7946340ee90858bcc5f79.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3616
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\wxeu.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2028
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\wxeu.ocx",DllRegisterServer
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:2956
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Hjdicjbb\mkczcuvbuwnnhpt.tkj",uAgybC
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4624
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Hjdicjbb\mkczcuvbuwnnhpt.tkj",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Suspicious behavior: EnumeratesProcesses
        
        PID:4584

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/2028-283-0x0000000000660000-0x0000000000688000-memory.dmp

Filesize
160KB

Download
memory/2956-284-0x00000000033C0000-0x00000000033E8000-memory.dmp

Filesize
160KB

Download
memory/3616-122-0x0000021E70180000-0x0000021E70182000-memory.dmp

Filesize
8KB

Download
memory/3616-115-0x00007FFB3D3D0000-0x00007FFB3D3E0000-memory.dmp

Filesize
64KB

Download
memory/3616-118-0x00007FFB3D3D0000-0x00007FFB3D3E0000-memory.dmp

Filesize
64KB

Download
memory/3616-117-0x00007FFB3D3D0000-0x00007FFB3D3E0000-memory.dmp

Filesize
64KB

Download
memory/3616-119-0x0000021E70180000-0x0000021E70182000-memory.dmp

Filesize
8KB

Download
memory/3616-116-0x00007FFB3D3D0000-0x00007FFB3D3E0000-memory.dmp

Filesize
64KB

Download
memory/3616-121-0x00007FFB3D3D0000-0x00007FFB3D3E0000-memory.dmp

Filesize
64KB

Download
memory/3616-120-0x0000021E70180000-0x0000021E70182000-memory.dmp

Filesize
8KB

Download
memory/4584-288-0x0000000002C00000-0x0000000002D4A000-memory.dmp

Filesize
1.3MB

Download
memory/4624-287-0x00000000049F0000-0x0000000004A18000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads