c439e7909baca9d49b1a21ff8d6dd6b86d441ddd7bfd9d97cc7dde2238b821e2

Analysis

max time kernel
4265083s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-en-20220112
submitted
14-01-2022 22:02

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General

Target

2223475-67848.xlsm
Size

83KB
MD5

f0352504e6f4ba057a118715e6c5a174
SHA1

d25bb13b4932f6a1882a036d9bfe9ea12372ee9c
SHA256

c439e7909baca9d49b1a21ff8d6dd6b86d441ddd7bfd9d97cc7dde2238b821e2
SHA512

294fa4fa698a7a92a9742507807c934be0bdcda69c22d89105f708b0f29a5b311e83ce88b673e5d65904f5af8002ed32b2bde8ded4be19280968d82d05207d97

Score

10^/10

suricata

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://recont.com/n8xbqb/lwEORjcJYPKCNQ/

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3116	2464	rundll32.exe	EXCEL.EXE

suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata: ET MALWARE W32/Emotet CnC Beacon 3
suricata
Blocklisted process makes network request 2 IoCs

Processes:

rundll32.exe

flow pid process

41 4012 rundll32.exe
42 4012 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 4 IoCs

Processes:

rundll32.exerundll32.exerundll32.exerundll32.exe

pid process

3116 rundll32.exe
1776 rundll32.exe
1264 rundll32.exe
4012 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Robtycxodmy\gyyql.men rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

flow	pid	process
41	4012	rundll32.exe
42	4012	rundll32.exe

pid	process
3116	rundll32.exe
1776	rundll32.exe
1264	rundll32.exe
4012	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Robtycxodmy\gyyql.men	rundll32.exe

Checks processor information in registry 2 TTPs 5 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXEMusNotification.exe

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
Key opened	\Registry\Machine\HARDWARE\DESCRIPTION\System\CentralProcessor\0	MusNotification.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	MusNotification.exe

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid process

2464 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

4012 rundll32.exe
4012 rundll32.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

MusNotification.exe

description pid process

Token: SeShutdownPrivilege 1928 MusNotification.exe
Token: SeCreatePagefilePrivilege 1928 MusNotification.exe

pid	process
4012	rundll32.exe
4012	rundll32.exe

description	pid	process
Token: SeShutdownPrivilege	1928	MusNotification.exe
Token: SeCreatePagefilePrivilege	1928	MusNotification.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE
2464	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 2464 wrote to memory of 3116	2464	EXCEL.EXE	rundll32.exe
PID 2464 wrote to memory of 3116	2464	EXCEL.EXE	rundll32.exe
PID 2464 wrote to memory of 3116	2464	EXCEL.EXE	rundll32.exe
PID 3116 wrote to memory of 1776	3116	rundll32.exe	rundll32.exe
PID 3116 wrote to memory of 1776	3116	rundll32.exe	rundll32.exe
PID 3116 wrote to memory of 1776	3116	rundll32.exe	rundll32.exe
PID 1776 wrote to memory of 1264	1776	rundll32.exe	rundll32.exe
PID 1776 wrote to memory of 1264	1776	rundll32.exe	rundll32.exe
PID 1776 wrote to memory of 1264	1776	rundll32.exe	rundll32.exe
PID 1264 wrote to memory of 4012	1264	rundll32.exe	rundll32.exe
PID 1264 wrote to memory of 4012	1264	rundll32.exe	rundll32.exe
PID 1264 wrote to memory of 4012	1264	rundll32.exe	rundll32.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\2223475-67848.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2464
- C:\Windows\SysWow64\rundll32.exe
  C:\Windows\SysWow64\rundll32.exe ..\erum.ocx,D"&"l"&"lR"&"egister"&"Serve"&"r
  2⤵
  - Process spawned unexpected child process
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:3116
- - C:\Windows\SysWOW64\rundll32.exe
    C:\Windows\SysWOW64\rundll32.exe "C:\Users\Admin\erum.ocx",DllRegisterServer
    3⤵
    - Loads dropped DLL
    - Drops file in System32 directory
    - Suspicious use of WriteProcessMemory
    PID:1776
  - - C:\Windows\SysWOW64\rundll32.exe
      C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Robtycxodmy\gyyql.men",tuVTt
      4⤵
      Loads dropped DLL
      Suspicious use of WriteProcessMemory
      PID:1264
    - - C:\Windows\SysWOW64\rundll32.exe
        
        C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Robtycxodmy\gyyql.men",DllRegisterServer
        5⤵
        Blocklisted process makes network request
        Loads dropped DLL
        Suspicious behavior: EnumeratesProcesses
        
        PID:4012

C:\Windows\system32\MusNotification.exe
C:\Windows\system32\MusNotification.exe
1⤵
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:1928

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\erum.ocx

MD5
eee8da618d627c4cecebe034746609f8

SHA1
ed16f02d1286f8c5b4a618438f729fe1c5a8def2

SHA256
8fb461647a6646d6e5971e60fd08aaa1cab30d8858528d7949cead1d4367b9bf

SHA512
2a30a3137179fca299cc68226bf1a5a0138d8ca5707fbbcdeb9be8b464f71255dd73a72c6c2ba9985d05af30902cbbb8e0b42f537cc7076c0f49ee18e4fca0b9

Download Submit
C:\Users\Admin\erum.ocx

MD5
eee8da618d627c4cecebe034746609f8

SHA1
ed16f02d1286f8c5b4a618438f729fe1c5a8def2

SHA256
8fb461647a6646d6e5971e60fd08aaa1cab30d8858528d7949cead1d4367b9bf

SHA512
2a30a3137179fca299cc68226bf1a5a0138d8ca5707fbbcdeb9be8b464f71255dd73a72c6c2ba9985d05af30902cbbb8e0b42f537cc7076c0f49ee18e4fca0b9

Download Submit
C:\Users\Admin\erum.ocx

MD5
eee8da618d627c4cecebe034746609f8

SHA1
ed16f02d1286f8c5b4a618438f729fe1c5a8def2

SHA256
8fb461647a6646d6e5971e60fd08aaa1cab30d8858528d7949cead1d4367b9bf

SHA512
2a30a3137179fca299cc68226bf1a5a0138d8ca5707fbbcdeb9be8b464f71255dd73a72c6c2ba9985d05af30902cbbb8e0b42f537cc7076c0f49ee18e4fca0b9

Download Submit
C:\Windows\SysWOW64\Robtycxodmy\gyyql.men

MD5
eee8da618d627c4cecebe034746609f8

SHA1
ed16f02d1286f8c5b4a618438f729fe1c5a8def2

SHA256
8fb461647a6646d6e5971e60fd08aaa1cab30d8858528d7949cead1d4367b9bf

SHA512
2a30a3137179fca299cc68226bf1a5a0138d8ca5707fbbcdeb9be8b464f71255dd73a72c6c2ba9985d05af30902cbbb8e0b42f537cc7076c0f49ee18e4fca0b9

Download Submit
C:\Windows\SysWOW64\Robtycxodmy\gyyql.men

MD5
eee8da618d627c4cecebe034746609f8

SHA1
ed16f02d1286f8c5b4a618438f729fe1c5a8def2

SHA256
8fb461647a6646d6e5971e60fd08aaa1cab30d8858528d7949cead1d4367b9bf

SHA512
2a30a3137179fca299cc68226bf1a5a0138d8ca5707fbbcdeb9be8b464f71255dd73a72c6c2ba9985d05af30902cbbb8e0b42f537cc7076c0f49ee18e4fca0b9

Download Submit
memory/1264-171-0x0000000004551000-0x0000000004575000-memory.dmp

Filesize
144KB

Download
memory/1264-169-0x0000000000000000-mapping.dmp

Download
memory/1776-167-0x00000000048C1000-0x00000000048E5000-memory.dmp

Filesize
144KB

Download
memory/1776-163-0x0000000004751000-0x0000000004775000-memory.dmp

Filesize
144KB

Download
memory/1776-161-0x0000000000EF1000-0x0000000000F15000-memory.dmp

Filesize
144KB

Download
memory/1776-159-0x0000000000731000-0x0000000000755000-memory.dmp

Filesize
144KB

Download
memory/1776-165-0x0000000004861000-0x0000000004885000-memory.dmp

Filesize
144KB

Download
memory/1776-157-0x0000000000000000-mapping.dmp

Download
memory/1776-174-0x0000000004C41000-0x0000000004C65000-memory.dmp

Filesize
144KB

Download
memory/2464-142-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-138-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-146-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-147-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-148-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-149-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-151-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-150-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-189-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-144-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-143-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-131-0x00007FFE769D0000-0x00007FFE769E0000-memory.dmp

Filesize
64KB

Download
memory/2464-132-0x00007FFE769D0000-0x00007FFE769E0000-memory.dmp

Filesize
64KB

Download
memory/2464-141-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-130-0x00007FFE769D0000-0x00007FFE769E0000-memory.dmp

Filesize
64KB

Download
memory/2464-140-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-139-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-145-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-137-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-135-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-136-0x00000248066F0000-0x00000248066F2000-memory.dmp

Filesize
8KB

Download
memory/2464-134-0x00007FFE769D0000-0x00007FFE769E0000-memory.dmp

Filesize
64KB

Download
memory/2464-133-0x00007FFE769D0000-0x00007FFE769E0000-memory.dmp

Filesize
64KB

Download
memory/3116-155-0x0000000003331000-0x0000000003355000-memory.dmp

Filesize
144KB

Download
memory/3116-156-0x0000000003355000-0x0000000003356000-memory.dmp

Filesize
4KB

Download
memory/3116-152-0x0000000000000000-mapping.dmp

Download
memory/4012-173-0x0000000000000000-mapping.dmp

Download
memory/4012-177-0x0000000003241000-0x0000000003265000-memory.dmp

Filesize
144KB

Download
memory/4012-179-0x0000000005081000-0x00000000050A5000-memory.dmp

Filesize
144KB

Download
memory/4012-181-0x0000000005161000-0x0000000005185000-memory.dmp

Filesize
144KB

Download
memory/4012-183-0x00000000051C1000-0x00000000051E5000-memory.dmp

Filesize
144KB

Download
memory/4012-185-0x00000000052B1000-0x00000000052D5000-memory.dmp

Filesize
144KB

Download
memory/4012-187-0x00000000055C1000-0x00000000055E5000-memory.dmp

Filesize
144KB

Download