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	3192	3488	rundll32.exe	EXCEL.EXE

Downloads MZ/PE file
Loads dropped DLL 2 IoCs

Processes:

rundll32.exerundll32.exe

pid process

3192 rundll32.exe
3100 rundll32.exe
Drops file in System32 directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Fzajg\udkvmboxsahqiz.cyl 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
3192	rundll32.exe
3100	rundll32.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Fzajg\udkvmboxsahqiz.cyl	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

3488 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3488	EXCEL.EXE
3488	EXCEL.EXE
3488	EXCEL.EXE
3488	EXCEL.EXE
3488	EXCEL.EXE
3488	EXCEL.EXE
3488	EXCEL.EXE
3488	EXCEL.EXE
3488	EXCEL.EXE
3488	EXCEL.EXE
3488	EXCEL.EXE
3488	EXCEL.EXE

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

EXCEL.EXErundll32.exerundll32.exe

description	pid	process	target process
PID 3488 wrote to memory of 3192	3488	EXCEL.EXE	rundll32.exe
PID 3488 wrote to memory of 3192	3488	EXCEL.EXE	rundll32.exe
PID 3488 wrote to memory of 3192	3488	EXCEL.EXE	rundll32.exe
PID 3192 wrote to memory of 3100	3192	rundll32.exe	rundll32.exe
PID 3192 wrote to memory of 3100	3192	rundll32.exe	rundll32.exe
PID 3192 wrote to memory of 3100	3192	rundll32.exe	rundll32.exe
PID 3100 wrote to memory of 3424	3100	rundll32.exe	rundll32.exe
PID 3100 wrote to memory of 3424	3100	rundll32.exe	rundll32.exe
PID 3100 wrote to memory of 3424	3100	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:3488

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:3192

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:3100

C:\Windows\SysWOW64\rundll32.exe
C:\Windows\SysWOW64\rundll32.exe "C:\Windows\SysWOW64\Fzajg\udkvmboxsahqiz.cyl",HcrnJnTFJCC
4⤵
PID:3424

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
6dbb0a6de778ce11e1b9596dc72742f6

SHA1
412586774e917623d0176832460e78afcce4d5da

SHA256
239aa212c6bb068b09561fc7289a92ed34af9edc9639803826e24102c3d71945

SHA512
040ab2a9bd9ae07ff89edf173578dfe7c4dea7bb3acf34be75a69fa8a423e44bb941904356309c778dca84f7147ce1a5574986f364f1fbe29b60401469ce45a1

Download Submit
\Users\Admin\dwa.ocx
MD5
6dbb0a6de778ce11e1b9596dc72742f6

SHA1
412586774e917623d0176832460e78afcce4d5da

SHA256
239aa212c6bb068b09561fc7289a92ed34af9edc9639803826e24102c3d71945

SHA512
040ab2a9bd9ae07ff89edf173578dfe7c4dea7bb3acf34be75a69fa8a423e44bb941904356309c778dca84f7147ce1a5574986f364f1fbe29b60401469ce45a1

Download Submit
\Users\Admin\dwa.ocx
MD5
6dbb0a6de778ce11e1b9596dc72742f6

SHA1
412586774e917623d0176832460e78afcce4d5da

SHA256
239aa212c6bb068b09561fc7289a92ed34af9edc9639803826e24102c3d71945

SHA512
040ab2a9bd9ae07ff89edf173578dfe7c4dea7bb3acf34be75a69fa8a423e44bb941904356309c778dca84f7147ce1a5574986f364f1fbe29b60401469ce45a1

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memory/3100-286-0x0000000000A50000-0x0000000000A79000-memory.dmp

Filesize
164KB

Download
memory/3100-281-0x0000000000000000-mapping.dmp

Download
memory/3192-274-0x0000000000000000-mapping.dmp

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memory/3192-283-0x0000000002D60000-0x0000000002D89000-memory.dmp

Filesize
164KB

Download
memory/3424-287-0x0000000000000000-mapping.dmp

Download
memory/3488-122-0x00007FFF65860000-0x00007FFF65870000-memory.dmp

Filesize
64KB

Download
memory/3488-172-0x00000240B74D0000-0x00000240B74D2000-memory.dmp

Filesize
8KB

Download
memory/3488-125-0x00000240B74D0000-0x00000240B74D2000-memory.dmp

Filesize
8KB

Download
memory/3488-124-0x00000240B74D0000-0x00000240B74D2000-memory.dmp

Filesize
8KB

Download
memory/3488-123-0x00000240B74D0000-0x00000240B74D2000-memory.dmp

Filesize
8KB

Download
memory/3488-118-0x00007FFF65860000-0x00007FFF65870000-memory.dmp

Filesize
64KB

Download
memory/3488-121-0x00007FFF65860000-0x00007FFF65870000-memory.dmp

Filesize
64KB

Download
memory/3488-120-0x00007FFF65860000-0x00007FFF65870000-memory.dmp

Filesize
64KB

Download
memory/3488-119-0x00007FFF65860000-0x00007FFF65870000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads