60610dee4927e907b5a6a4ac49f8c921fa8af7005b2e8deb2b26ffcc1cac6322

General

Target

60610dee4927e907b5a6a4ac49f8c921fa8af7005b2e8deb2b26ffcc1cac6322.xlsm
Size

83KB
MD5

044c399cb95459d89ce15247a7f4fb0b
SHA1

0621fb8e28e870a5b13229a2a18758ce306c9896
SHA256

60610dee4927e907b5a6a4ac49f8c921fa8af7005b2e8deb2b26ffcc1cac6322
SHA512

9362ecf9910eceb607f82d3af4e176b4dc51c9164904456ca4083a8a7140ac3c585bc021938bc12bfbce8d648992e3c0693d53a09bdda9d37536c65b4ec34233

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://yuanbinglun.com/www.yuanbinglun.com/7kKwqmxRWQK0OLi/

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	3420	400	rundll32.exe	EXCEL.EXE

Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

3420 rundll32.exe
1648 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

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

System Information Discovery
T1082

pid	process
3420	rundll32.exe
1648	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Mjnnhwz\pdwvsqr.nos	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

400 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE
400	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exe

description	pid	process	target process
PID 400 wrote to memory of 3420	400	EXCEL.EXE	rundll32.exe
PID 400 wrote to memory of 3420	400	EXCEL.EXE	rundll32.exe
PID 400 wrote to memory of 3420	400	EXCEL.EXE	rundll32.exe
PID 3420 wrote to memory of 1648	3420	rundll32.exe	rundll32.exe
PID 3420 wrote to memory of 1648	3420	rundll32.exe	rundll32.exe
PID 3420 wrote to memory of 1648	3420	rundll32.exe	rundll32.exe
PID 1648 wrote to memory of 2604	1648	rundll32.exe	rundll32.exe
PID 1648 wrote to memory of 2604	1648	rundll32.exe	rundll32.exe
PID 1648 wrote to memory of 2604	1648	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\60610dee4927e907b5a6a4ac49f8c921fa8af7005b2e8deb2b26ffcc1cac6322.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:400

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:3420

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:1648

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Mjnnhwz\pdwvsqr.nos",XMkEHojCPQUDm
4⤵
PID:2604

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

C:\Users\Admin\dwa.ocx
MD5
e2386d3590a00455319267519a7adb13

SHA1
d4c47e58e26670488e0dd124ae0e0e6ab1d26899

SHA256
2d827aac896db634c11192170e121894f90f563296fc11b95149640e140bdf3a

SHA512
37c52d1d694cf5eb16a4e9382a5a7cf69a2ad90d8d0cc6a18bcb4ac2972b5255e5abd4dde9ec208eabc229923a6beeb922decfba73cdef2aeac017ba56a05373

Download Submit
\Users\Admin\dwa.ocx
MD5
e2386d3590a00455319267519a7adb13

SHA1
d4c47e58e26670488e0dd124ae0e0e6ab1d26899

SHA256
2d827aac896db634c11192170e121894f90f563296fc11b95149640e140bdf3a

SHA512
37c52d1d694cf5eb16a4e9382a5a7cf69a2ad90d8d0cc6a18bcb4ac2972b5255e5abd4dde9ec208eabc229923a6beeb922decfba73cdef2aeac017ba56a05373

Download Submit
\Users\Admin\dwa.ocx
MD5
e2386d3590a00455319267519a7adb13

SHA1
d4c47e58e26670488e0dd124ae0e0e6ab1d26899

SHA256
2d827aac896db634c11192170e121894f90f563296fc11b95149640e140bdf3a

SHA512
37c52d1d694cf5eb16a4e9382a5a7cf69a2ad90d8d0cc6a18bcb4ac2972b5255e5abd4dde9ec208eabc229923a6beeb922decfba73cdef2aeac017ba56a05373

Download Submit
memory/400-120-0x000001CC2F450000-0x000001CC2F452000-memory.dmp

Filesize
8KB

Download
memory/400-115-0x00007FF86FB00000-0x00007FF86FB10000-memory.dmp

Filesize
64KB

Download
memory/400-119-0x000001CC2F450000-0x000001CC2F452000-memory.dmp

Filesize
8KB

Download
memory/400-121-0x00007FF86FB00000-0x00007FF86FB10000-memory.dmp

Filesize
64KB

Download
memory/400-122-0x000001CC2F450000-0x000001CC2F452000-memory.dmp

Filesize
8KB

Download
memory/400-118-0x00007FF86FB00000-0x00007FF86FB10000-memory.dmp

Filesize
64KB

Download
memory/400-117-0x00007FF86FB00000-0x00007FF86FB10000-memory.dmp

Filesize
64KB

Download
memory/400-116-0x00007FF86FB00000-0x00007FF86FB10000-memory.dmp

Filesize
64KB

Download
memory/1648-270-0x0000000000000000-mapping.dmp

Download
memory/1648-275-0x0000000002A10000-0x0000000002B5A000-memory.dmp

Filesize
1.3MB

Download
memory/2604-276-0x0000000000000000-mapping.dmp

Download
memory/3420-259-0x0000000000000000-mapping.dmp

Download
memory/3420-272-0x0000000002A40000-0x0000000002A69000-memory.dmp

Filesize
164KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads