152d0b25ca2f0f4066edf77906c112fe4e6d49c17f6fc35a039686276ad7686d

General

Target

152d0b25ca2f0f4066edf77906c112fe4e6d49c17f6fc35a039686276ad7686d.xlsm
Size

83KB
MD5

a4fd29ae977b18fae9b5d53d5b355bc3
SHA1

6a2832d9d465160ab149f8a10c105e7fffb5b254
SHA256

152d0b25ca2f0f4066edf77906c112fe4e6d49c17f6fc35a039686276ad7686d
SHA512

dfcfc2f76c4583c85eb02a79cf23de52c6b6cd696636f422dee937799d10cb6d475aae19684f0ccb09612a9675e508bd30b209c8f3f90dd53c0920f755e23ec7

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://mammy-chiro.com/case/ZTkBzbz/

xlm40.dropper

http://bluetoothheadsetreview.xyz/wp-includes/xmdHAGgfki/

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	2036	3532	rundll32.exe	68

Loads dropped DLL 2 IoCs

pid	Process
2036	rundll32.exe
2596	rundll32.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Gxlorgghlx\bvrxflsuuowvp.oyl	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
3532	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3532	EXCEL.EXE
3532	EXCEL.EXE
3532	EXCEL.EXE
3532	EXCEL.EXE
3532	EXCEL.EXE
3532	EXCEL.EXE
3532	EXCEL.EXE
3532	EXCEL.EXE
3532	EXCEL.EXE
3532	EXCEL.EXE
3532	EXCEL.EXE
3532	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3532 wrote to memory of 2036	3532	EXCEL.EXE	72
PID 3532 wrote to memory of 2036	3532	EXCEL.EXE	72
PID 3532 wrote to memory of 2036	3532	EXCEL.EXE	72
PID 2036 wrote to memory of 2596	2036	rundll32.exe	75
PID 2036 wrote to memory of 2596	2036	rundll32.exe	75
PID 2036 wrote to memory of 2596	2036	rundll32.exe	75
PID 2596 wrote to memory of 2108	2596	rundll32.exe	76
PID 2596 wrote to memory of 2108	2596	rundll32.exe	76
PID 2596 wrote to memory of 2108	2596	rundll32.exe	76

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\152d0b25ca2f0f4066edf77906c112fe4e6d49c17f6fc35a039686276ad7686d.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\dwa.ocx,D"&"l"&"lR"&"egister"&"Server
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2036
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\dwa.ocx",DllRegisterServer
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:2596
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Gxlorgghlx\bvrxflsuuowvp.oyl",JizLScqY
      4⤵
      PID:2108

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/2036-264-0x00000000010F0000-0x0000000001119000-memory.dmp

Filesize
164KB

Download
memory/2596-265-0x0000000000FC0000-0x000000000110A000-memory.dmp

Filesize
1.3MB

Download
memory/3532-119-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Filesize
64KB

Download
memory/3532-121-0x000001E356190000-0x000001E356192000-memory.dmp

Filesize
8KB

Download
memory/3532-120-0x000001E356190000-0x000001E356192000-memory.dmp

Filesize
8KB

Download
memory/3532-122-0x000001E356190000-0x000001E356192000-memory.dmp

Filesize
8KB

Download
memory/3532-115-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Filesize
64KB

Download
memory/3532-118-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Filesize
64KB

Download
memory/3532-117-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Filesize
64KB

Download
memory/3532-116-0x00007FFE91410000-0x00007FFE91420000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads