857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951

General

Target

857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe
Size

753KB
MD5

b4471db7c90e5cd55bd8bcc324d54602
SHA1

53abfd4381490d79be37f2e88c6ab378bf5be92c
SHA256

857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951
SHA512

be5668d148612713e0df1cbf6d7800af9c8145c5acd41cfef6d96c6bfbd5bdec150e3cb2e096a26962442de8dedde4290fc5766f9c2739188390a91c3391486f

Score

8^/10

macro persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

Synaptics.exe

pid process

1312 Synaptics.exe

pid	process
1312	Synaptics.exe

Suspicious Office macro 1 IoCs

Office document equipped with macros.

macro

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\bGcR1449.xlsm	office_macros

Loads dropped DLL 2 IoCs

Processes:

857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe

pid	process
520	857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe
520	857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

744 EXCEL.EXE
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

EXCEL.EXE

pid process

744 EXCEL.EXE

pid	process
744	EXCEL.EXE

pid	process
744	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe

description	pid	process	target process
PID 520 wrote to memory of 1312	520	857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe	Synaptics.exe
PID 520 wrote to memory of 1312	520	857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe	Synaptics.exe
PID 520 wrote to memory of 1312	520	857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe	Synaptics.exe
PID 520 wrote to memory of 1312	520	857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe	Synaptics.exe

C:\Users\Admin\AppData\Local\Temp\857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe
"C:\Users\Admin\AppData\Local\Temp\857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:520

C:\ProgramData\Synaptics\Synaptics.exe
"C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
2⤵
- Executes dropped EXE
PID:1312

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /automation -Embedding
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:744

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\Synaptics\Synaptics.exe
MD5
b4471db7c90e5cd55bd8bcc324d54602

SHA1
53abfd4381490d79be37f2e88c6ab378bf5be92c

SHA256
857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951

SHA512
be5668d148612713e0df1cbf6d7800af9c8145c5acd41cfef6d96c6bfbd5bdec150e3cb2e096a26962442de8dedde4290fc5766f9c2739188390a91c3391486f

Download Submit
C:\ProgramData\Synaptics\Synaptics.exe
MD5
b4471db7c90e5cd55bd8bcc324d54602

SHA1
53abfd4381490d79be37f2e88c6ab378bf5be92c

SHA256
857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951

SHA512
be5668d148612713e0df1cbf6d7800af9c8145c5acd41cfef6d96c6bfbd5bdec150e3cb2e096a26962442de8dedde4290fc5766f9c2739188390a91c3391486f

Download Submit
C:\Users\Admin\AppData\Local\Temp\bGcR1449.xlsm
MD5
e566fc53051035e1e6fd0ed1823de0f9

SHA1
00bc96c48b98676ecd67e81a6f1d7754e4156044

SHA256
8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

SHA512
a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

Download Submit
\ProgramData\Synaptics\Synaptics.exe
MD5
b4471db7c90e5cd55bd8bcc324d54602

SHA1
53abfd4381490d79be37f2e88c6ab378bf5be92c

SHA256
857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951

SHA512
be5668d148612713e0df1cbf6d7800af9c8145c5acd41cfef6d96c6bfbd5bdec150e3cb2e096a26962442de8dedde4290fc5766f9c2739188390a91c3391486f

Download Submit
\ProgramData\Synaptics\Synaptics.exe
MD5
b4471db7c90e5cd55bd8bcc324d54602

SHA1
53abfd4381490d79be37f2e88c6ab378bf5be92c

SHA256
857835a98d61f311c7de3354b8c8c395905e45831b519528cf5947083d2d9951

SHA512
be5668d148612713e0df1cbf6d7800af9c8145c5acd41cfef6d96c6bfbd5bdec150e3cb2e096a26962442de8dedde4290fc5766f9c2739188390a91c3391486f

Download Submit
memory/520-59-0x0000000075C31000-0x0000000075C33000-memory.dmp

Filesize
8KB

Download
memory/520-60-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/744-67-0x000000002FF81000-0x000000002FF84000-memory.dmp

Filesize
12KB

Download
memory/744-68-0x0000000071191000-0x0000000071193000-memory.dmp

Filesize
8KB

Download
memory/744-69-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1312-63-0x0000000000000000-mapping.dmp

Download
memory/1312-66-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads