48accb18692df9774f22f810c1812ef3b3d0da6174406df8f9fb0840a513475f

General

Target

SPECIFICATION-625636.doc
Size

341KB
MD5

7208a7b222996d4bc09ef1ff90f4e6fa
SHA1

8f64434a869f53831d34dd1ea1e2c6f599a8c978
SHA256

48accb18692df9774f22f810c1812ef3b3d0da6174406df8f9fb0840a513475f
SHA512

8aa072251243df640921fc05ea94dcc820f2aadf8e8d8215d7e01f4fff352f393fdf3065949cb84833d71ea46502904e35e77e9409353c46fa3518003e67d6cb

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	2220	716	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
Set value (str)	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-3889071095-766059721-3653951537-3754856968-279548431-3371694508-2916382132\DisplayName = "OICE_16_974FA576_32C1D314_2417"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-3889071095-766059721-3653951537-3754856968-279548431-3371694508-2916382132\Moniker = "oice_16_974fa576_32c1d314_2417"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-3889071095-766059721-3653951537-3754856968-279548431-3371694508-2916382132\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_CLASSES\LOCAL SETTINGS\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\APPCONTAINER\STORAGE\OICE_16_974FA576_32C1D314_2417\CHILDREN	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_2417	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_CLASSES\LOCAL SETTINGS\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\APPCONTAINER\MAPPINGS\S-1-15-2-3889071095-766059721-3653951537-3754856968-279548431-3371694508-2916382132\CHILDREN	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-3889071095-766059721-3653951537-3754856968-279548431-3371694508-2916382132	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-3889071095-766059721-3653951537-3754856968-279548431-3371694508-2916382132	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_2417	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2559286294-2439613352-4032193287-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_2417\Children	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{4A648AA8-50B4-4C42-916E-86FB32E77913}\abdtfhghgeghgh.ScT:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

716 WINWORD.EXE
716 WINWORD.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

WINWORD.EXE

pid	process
716	WINWORD.EXE
716	WINWORD.EXE
716	WINWORD.EXE
716	WINWORD.EXE
716	WINWORD.EXE
716	WINWORD.EXE
716	WINWORD.EXE
716	WINWORD.EXE
716	WINWORD.EXE
716	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description pid process target process

PID 716 wrote to memory of 2220 716 WINWORD.EXE FLTLDR.EXE
PID 716 wrote to memory of 2220 716 WINWORD.EXE FLTLDR.EXE

description	pid	process	target process
PID 716 wrote to memory of 2220	716	WINWORD.EXE	FLTLDR.EXE
PID 716 wrote to memory of 2220	716	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\SPECIFICATION-625636.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:716

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:2220

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

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Downloads

C:\Users\Admin\AppData\Local\Packages\oice_16_974fa576_32c1d314_2417\AC\Temp\FL42DB.tmp
MD5
861d102208645d9089d7b60f59b84610

SHA1
82cc3a35594bc6df293d571d810395b16db4b33f

SHA256
78f9d28a0a5b3ec7b91241b24ff4922b51c722f44e23f13440257ca046d53f9f

SHA512
4f26a3762adde4d011a87a9ea49116d4b9e1203320bc1b00f852d9b37e5b55dd4328bc3508d023055d168ed829f17fe115b82146e27f04c163e1fe42e923200b

Download Submit
memory/716-123-0x00007FFBD9A50000-0x00007FFBDAB3E000-memory.dmp

Filesize
16.9MB

Download
memory/716-117-0x00007FFBBB3A0000-0x00007FFBBB3B0000-memory.dmp

Filesize
64KB

Download
memory/716-118-0x00007FFBBB3A0000-0x00007FFBBB3B0000-memory.dmp

Filesize
64KB

Download
memory/716-120-0x00007FFBBB3A0000-0x00007FFBBB3B0000-memory.dmp

Filesize
64KB

Download
memory/716-119-0x00007FFBDDB60000-0x00007FFBE0683000-memory.dmp

Filesize
43.1MB

Download
memory/716-115-0x00007FFBBB3A0000-0x00007FFBBB3B0000-memory.dmp

Filesize
64KB

Download
memory/716-124-0x00007FFBD48A0000-0x00007FFBD6795000-memory.dmp

Filesize
31.0MB

Download
memory/716-116-0x00007FFBBB3A0000-0x00007FFBBB3B0000-memory.dmp

Filesize
64KB

Download
memory/2220-271-0x0000000000000000-mapping.dmp

Download
memory/2220-289-0x00007FFBBB3A0000-0x00007FFBBB3B0000-memory.dmp

Filesize
64KB

Download
memory/2220-292-0x00007FFBBB3A0000-0x00007FFBBB3B0000-memory.dmp

Filesize
64KB

Download
memory/2220-298-0x00007FFBBB3A0000-0x00007FFBBB3B0000-memory.dmp

Filesize
64KB

Download
memory/2220-372-0x00007FFBBB3A0000-0x00007FFBBB3B0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads