b2b9f945e823de8e2cb68ff9b4834d1c3e179756b5a3775f4986b849bc79d914

General

Target

technical sheet.doc
Size

295KB
MD5

3ae5587b15fa3a7391837bff4d7f0ff0
SHA1

1d608a470e2bf351df55b080e87d62ed918b2c8f
SHA256

b2b9f945e823de8e2cb68ff9b4834d1c3e179756b5a3775f4986b849bc79d914
SHA512

7f9e83e741f815652e2262fa44900b9c51e20dc81d22145c53d601006cda9eb5d579837e533b43ff339180d2de3266fc254683f607ed73f9ac1e8ef127043271

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

FLTLDR.EXE

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	2384	3256	FLTLDR.EXE	WINWORD.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:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Modifies registry class 10 IoCs

Processes:

WINWORD.EXE

description	ioc	process
Key created	\Registry\User\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1592906106-394743522-1783617817-1858622399-226305409-3052165466-3541705559	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1592906106-394743522-1783617817-1858622399-226305409-3052165466-3541705559\Moniker = "oice_16_974fa576_32c1d314_1d6b"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1592906106-394743522-1783617817-1858622399-226305409-3052165466-3541705559\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1592906106-394743522-1783617817-1858622399-226305409-3052165466-3541705559\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1592906106-394743522-1783617817-1858622399-226305409-3052165466-3541705559	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1592906106-394743522-1783617817-1858622399-226305409-3052165466-3541705559\DisplayName = "OICE_16_974FA576_32C1D314_1D6B"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_1d6b	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_1d6b\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_1d6b\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_1d6b	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{5B14304C-01D6-4F25-B90B-34ED4C9C46AD}\Abctfhghgdghgh‹.scT:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3256 WINWORD.EXE
3256 WINWORD.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

WINWORD.EXE

pid	process
3256	WINWORD.EXE
3256	WINWORD.EXE
3256	WINWORD.EXE
3256	WINWORD.EXE
3256	WINWORD.EXE
3256	WINWORD.EXE
3256	WINWORD.EXE
3256	WINWORD.EXE
3256	WINWORD.EXE
3256	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 3256 wrote to memory of 2384	3256	WINWORD.EXE	FLTLDR.EXE
PID 3256 wrote to memory of 2384	3256	WINWORD.EXE	FLTLDR.EXE

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\technical sheet.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3256

C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\FLTLDR.EXE
"C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\OFFICE16\FLTLDR.EXE" C:\Program Files\Common Files\Microsoft Shared\GRPHFLT\PNG32.FLT
2⤵
- Process spawned unexpected child process
PID:2384

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Packages\oice_16_974fa576_32c1d314_1d6b\AC\Temp\FL34D1.tmp
MD5
6a8218268a35f9a242eb90fcc54ef742

SHA1
d0bd829dc7461d16610fa62eff57ee0a4b2282ca

SHA256
9ce35e0f96ce95af2d9d1bbaf40e8089b82328a23fdad3a55cf120fc4a99a551

SHA512
ffaf526b05309458aa0fd09ede6b49a22f249700b58c95a28964c2e307980b84d1148aa5c774bd76c305218f809f62511f7016d6598d186d99f7317e6789e1ee

Download Submit
memory/2384-179-0x0000000000000000-mapping.dmp

Download
memory/2384-181-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmp

Filesize
64KB

Download
memory/3256-114-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmp

Filesize
64KB

Download
memory/3256-115-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmp

Filesize
64KB

Download
memory/3256-116-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmp

Filesize
64KB

Download
memory/3256-117-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmp

Filesize
64KB

Download
memory/3256-119-0x00007FFCBABC0000-0x00007FFCBABD0000-memory.dmp

Filesize
64KB

Download
memory/3256-118-0x00007FFCDC800000-0x00007FFCDF323000-memory.dmp

Filesize
43.1MB

Download
memory/3256-122-0x00007FFCD56E0000-0x00007FFCD67CE000-memory.dmp

Filesize
16.9MB

Download
memory/3256-123-0x00007FFCD37E0000-0x00007FFCD56D5000-memory.dmp

Filesize
31.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads