db676ef714ea818edca3ff4a25da38808cbec2a6d7b944a237e44ad29d8932da

General

Target

db676ef714ea818edca3ff4a25da38808cbec2a6d7b944a237e44ad29d8932da.xlsm
Size

83KB
MD5

a9732242b92b6c4499367ea3d9704807
SHA1

b731a47794a16b903cab1dae5adfbc966b24a0f0
SHA256

db676ef714ea818edca3ff4a25da38808cbec2a6d7b944a237e44ad29d8932da
SHA512

d07044867899d13df8e35bffdc9615b38900b5fa40e87c008cac14aff8bc01897d283a6fe4083f9ce17d6246130dffc859cbb6f11cf333271be5b3c93fe13eaf

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	3936	2776	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 3 IoCs

Processes:

rundll32.exe

flow pid process

42 3216 rundll32.exe
43 3216 rundll32.exe
47 3216 rundll32.exe
Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

3936 rundll32.exe
1924 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Bhzyhtcidz\lwmgqzyhzeycq.nnd 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
42	3216	rundll32.exe
43	3216	rundll32.exe
47	3216	rundll32.exe

pid	process
3936	rundll32.exe
1924	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Bhzyhtcidz\lwmgqzyhzeycq.nnd	rundll32.exe

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

Processes:

EXCEL.EXE

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

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

2776 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

3216 rundll32.exe
3216 rundll32.exe

pid	process
3216	rundll32.exe
3216	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2776	EXCEL.EXE
2776	EXCEL.EXE
2776	EXCEL.EXE
2776	EXCEL.EXE
2776	EXCEL.EXE
2776	EXCEL.EXE
2776	EXCEL.EXE
2776	EXCEL.EXE
2776	EXCEL.EXE
2776	EXCEL.EXE
2776	EXCEL.EXE
2776	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 2776 wrote to memory of 3936	2776	EXCEL.EXE	rundll32.exe
PID 2776 wrote to memory of 3936	2776	EXCEL.EXE	rundll32.exe
PID 2776 wrote to memory of 3936	2776	EXCEL.EXE	rundll32.exe
PID 3936 wrote to memory of 1924	3936	rundll32.exe	rundll32.exe
PID 3936 wrote to memory of 1924	3936	rundll32.exe	rundll32.exe
PID 3936 wrote to memory of 1924	3936	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 3200	1924	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 3200	1924	rundll32.exe	rundll32.exe
PID 1924 wrote to memory of 3200	1924	rundll32.exe	rundll32.exe
PID 3200 wrote to memory of 3216	3200	rundll32.exe	rundll32.exe
PID 3200 wrote to memory of 3216	3200	rundll32.exe	rundll32.exe
PID 3200 wrote to memory of 3216	3200	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\db676ef714ea818edca3ff4a25da38808cbec2a6d7b944a237e44ad29d8932da.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2776

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:3936

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:1924

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Bhzyhtcidz\lwmgqzyhzeycq.nnd",eJZbtauOXqSnaYM
4⤵
- Suspicious use of WriteProcessMemory
PID:3200

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Bhzyhtcidz\lwmgqzyhzeycq.nnd",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:3216

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

3

T1082

Query Registry

2

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\erum.ocx
MD5
c5093fcdee89a752d186c61028304ea8

SHA1
6e625e11b6ab95f75a3eb2694cee81b6dcac1fda

SHA256
953b68b360255d5b1bbbf767353b9adf64c88b6a02311c47c0375272407b2492

SHA512
c0de6c793232dd165e3650cb7661db2b8dbc457a3aac48e8f458c8eb7c1aeac3e9a5188cc7c0eff7a3568c80a973b4a3ef3de8aa5394852854136b1385ea3c0c

Download Submit
\Users\Admin\erum.ocx
MD5
c5093fcdee89a752d186c61028304ea8

SHA1
6e625e11b6ab95f75a3eb2694cee81b6dcac1fda

SHA256
953b68b360255d5b1bbbf767353b9adf64c88b6a02311c47c0375272407b2492

SHA512
c0de6c793232dd165e3650cb7661db2b8dbc457a3aac48e8f458c8eb7c1aeac3e9a5188cc7c0eff7a3568c80a973b4a3ef3de8aa5394852854136b1385ea3c0c

Download Submit
\Users\Admin\erum.ocx
MD5
c5093fcdee89a752d186c61028304ea8

SHA1
6e625e11b6ab95f75a3eb2694cee81b6dcac1fda

SHA256
953b68b360255d5b1bbbf767353b9adf64c88b6a02311c47c0375272407b2492

SHA512
c0de6c793232dd165e3650cb7661db2b8dbc457a3aac48e8f458c8eb7c1aeac3e9a5188cc7c0eff7a3568c80a973b4a3ef3de8aa5394852854136b1385ea3c0c

Download Submit
memory/1924-266-0x0000000000000000-mapping.dmp

Download
memory/2776-118-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

Filesize
64KB

Download
memory/2776-120-0x0000021B19C60000-0x0000021B19C62000-memory.dmp

Filesize
8KB

Download
memory/2776-121-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

Filesize
64KB

Download
memory/2776-122-0x0000021B19C60000-0x0000021B19C62000-memory.dmp

Filesize
8KB

Download
memory/2776-119-0x0000021B19C60000-0x0000021B19C62000-memory.dmp

Filesize
8KB

Download
memory/2776-115-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

Filesize
64KB

Download
memory/2776-117-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

Filesize
64KB

Download
memory/2776-116-0x00007FFD79DC0000-0x00007FFD79DD0000-memory.dmp

Filesize
64KB

Download
memory/3200-278-0x0000000000000000-mapping.dmp

Download
memory/3216-281-0x0000000000000000-mapping.dmp

Download
memory/3936-259-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads