b654e1b1f4906be1e6155ad03eba53894dfa66ba899732c7f4cacac7a98d1f6e

General

Target

b654e1b1f4906be1e6155ad03eba53894dfa66ba899732c7f4cacac7a98d1f6e.xlsm
Size

83KB
MD5

bdc6d97b7154f28cc5bfb7d95190a1fa
SHA1

37d3583e2cd06ebf7b6ec8768abb635c5a1dd3d9
SHA256

b654e1b1f4906be1e6155ad03eba53894dfa66ba899732c7f4cacac7a98d1f6e
SHA512

ad96e4126355d96c20fb777cb0ea4aaffe25423cd79b7c779e2b01fd4046c4135250d8273577a034390074dd9adea0dc6adf01313e72d2b89bbe481da29b2016

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://zml.laneso.com/packet/AlvJ8OdtSYEeeCQP/

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	3068	2376	rundll32.exe	EXCEL.EXE

Blocklisted process makes network request 3 IoCs

Processes:

rundll32.exe

flow pid process

45 2680 rundll32.exe
46 2680 rundll32.exe
47 2680 rundll32.exe
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

3068 rundll32.exe
300 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Aygvlfsocrhf\xxmbimnoeq.jzd 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
45	2680	rundll32.exe
46	2680	rundll32.exe
47	2680	rundll32.exe

pid	process
3068	rundll32.exe
300	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Aygvlfsocrhf\xxmbimnoeq.jzd	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 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

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

2376 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

2680 rundll32.exe
2680 rundll32.exe

pid	process
2680	rundll32.exe
2680	rundll32.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2376	EXCEL.EXE
2376	EXCEL.EXE
2376	EXCEL.EXE
2376	EXCEL.EXE
2376	EXCEL.EXE
2376	EXCEL.EXE
2376	EXCEL.EXE
2376	EXCEL.EXE
2376	EXCEL.EXE
2376	EXCEL.EXE
2376	EXCEL.EXE
2376	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exerundll32.exe

description	pid	process	target process
PID 2376 wrote to memory of 3068	2376	EXCEL.EXE	rundll32.exe
PID 2376 wrote to memory of 3068	2376	EXCEL.EXE	rundll32.exe
PID 2376 wrote to memory of 3068	2376	EXCEL.EXE	rundll32.exe
PID 3068 wrote to memory of 300	3068	rundll32.exe	rundll32.exe
PID 3068 wrote to memory of 300	3068	rundll32.exe	rundll32.exe
PID 3068 wrote to memory of 300	3068	rundll32.exe	rundll32.exe
PID 300 wrote to memory of 3796	300	rundll32.exe	rundll32.exe
PID 300 wrote to memory of 3796	300	rundll32.exe	rundll32.exe
PID 300 wrote to memory of 3796	300	rundll32.exe	rundll32.exe
PID 3796 wrote to memory of 2680	3796	rundll32.exe	rundll32.exe
PID 3796 wrote to memory of 2680	3796	rundll32.exe	rundll32.exe
PID 3796 wrote to memory of 2680	3796	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\b654e1b1f4906be1e6155ad03eba53894dfa66ba899732c7f4cacac7a98d1f6e.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2376

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:3068

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:300

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Aygvlfsocrhf\xxmbimnoeq.jzd",EQrUosgCGTInEi
4⤵
- Suspicious use of WriteProcessMemory
PID:3796

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\System32\Aygvlfsocrhf\xxmbimnoeq.jzd",DllRegisterServer
5⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
PID:2680

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
27328645430fa569af2dae074dc75be1

SHA1
641cbf374586ba3be921f58615ecdd4f7119d59e

SHA256
e46e00f87034131210e2a8909c2819062858d0a42d6ca55273887831ccd4e9b1

SHA512
83f7aa6fe9fb4d1ff268c5f8bdb57654dae0d8438e23935f516094647f842eab55de4872ac426229d0d5d5684dc69cba60e7a19e70e1f85122e889173b4b18d9

Download Submit
\Users\Admin\erum.ocx
MD5
27328645430fa569af2dae074dc75be1

SHA1
641cbf374586ba3be921f58615ecdd4f7119d59e

SHA256
e46e00f87034131210e2a8909c2819062858d0a42d6ca55273887831ccd4e9b1

SHA512
83f7aa6fe9fb4d1ff268c5f8bdb57654dae0d8438e23935f516094647f842eab55de4872ac426229d0d5d5684dc69cba60e7a19e70e1f85122e889173b4b18d9

Download Submit
\Users\Admin\erum.ocx
MD5
27328645430fa569af2dae074dc75be1

SHA1
641cbf374586ba3be921f58615ecdd4f7119d59e

SHA256
e46e00f87034131210e2a8909c2819062858d0a42d6ca55273887831ccd4e9b1

SHA512
83f7aa6fe9fb4d1ff268c5f8bdb57654dae0d8438e23935f516094647f842eab55de4872ac426229d0d5d5684dc69cba60e7a19e70e1f85122e889173b4b18d9

Download Submit
memory/300-263-0x0000000000000000-mapping.dmp

Download
memory/2376-118-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2376-119-0x000001EAEC7C0000-0x000001EAEC7C2000-memory.dmp

Filesize
8KB

Download
memory/2376-121-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2376-122-0x000001EAEC7C0000-0x000001EAEC7C2000-memory.dmp

Filesize
8KB

Download
memory/2376-120-0x000001EAEC7C0000-0x000001EAEC7C2000-memory.dmp

Filesize
8KB

Download
memory/2376-115-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2376-117-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2376-116-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2680-284-0x0000000000000000-mapping.dmp

Download
memory/3068-258-0x0000000000000000-mapping.dmp

Download
memory/3796-281-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads