72342930696771d8f979442184cf8503588840bc32843f172d185ef334285664

General

Target

c_xF3pia_r_xE1pida.rtf
Size

255KB
MD5

72af4b046582fa39d8a302d460de50c9
SHA1

79fb9c95dd88ed5e4343f0f8e2603b4a296150b7
SHA256

72342930696771d8f979442184cf8503588840bc32843f172d185ef334285664
SHA512

85971e64415886036564935bc178275e11bbb7ceb6cef516af8da422b3dbc5e2662ac9ee2b8fd0873620b43f39a36b2f2f07fcb157d4967a8111b6793fea77a3
SSDEEP

1536:i+r5aosJaQf5UHZbv7bpGLJ/oj4lFSHTVFojaVbUxZVzFz76mAg5eeVhMDw5wfL8:id54+VzFtr5RDAw5wfY

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	2176	4060	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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE

Modifies registry class 10 IoCs

Processes:

WINWORD.EXE

description	ioc	process
Key created	\Registry\User\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-4274306196-665943079-2906864038-1002837049-3311954315-3146585909-2652341208\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_d67\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_d67	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-4274306196-665943079-2906864038-1002837049-3311954315-3146585909-2652341208	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-4274306196-665943079-2906864038-1002837049-3311954315-3146585909-2652341208\Moniker = "oice_16_974fa576_32c1d314_d67"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_d67	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_d67\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-4274306196-665943079-2906864038-1002837049-3311954315-3146585909-2652341208\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-4274306196-665943079-2906864038-1002837049-3311954315-3146585909-2652341208	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-4274306196-665943079-2906864038-1002837049-3311954315-3146585909-2652341208\DisplayName = "OICE_16_974FA576_32C1D314_D67"	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{164BC2BF-1434-4970-83BB-86641F71B80B}\FZdtfhgYgeghDz .scT:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

4060 WINWORD.EXE
4060 WINWORD.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

WINWORD.EXE

pid	process
4060	WINWORD.EXE
4060	WINWORD.EXE
4060	WINWORD.EXE
4060	WINWORD.EXE
4060	WINWORD.EXE
4060	WINWORD.EXE
4060	WINWORD.EXE
4060	WINWORD.EXE
4060	WINWORD.EXE
4060	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 4060 wrote to memory of 2176	4060	WINWORD.EXE	FLTLDR.EXE
PID 4060 wrote to memory of 2176	4060	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\c_xF3pia_r_xE1pida.rtf" /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:4060

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:2176

Network

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_d67\AC\Temp\FLB858.tmp
Filesize
256KB

MD5
c0f28cd182febc7d49549e1000302c29

SHA1
1756563d36a7b21bd60cc38def814d884c8e6d7d

SHA256
b638240a74680d0628de5e4a46436ac36c4ef84c88fda48245deebc18d748926

SHA512
2bafd0e79d320b46c5817dc77c86bc02ed176e47850d0c3eb993e98d2743790c191e5b27a17a854312f0b69d876e6b16ac0d812805389a394845c77c2be43c94

Download Submit
memory/2176-139-0x0000000000000000-mapping.dmp

Download
memory/2176-144-0x00007FFBFA950000-0x00007FFBFA960000-memory.dmp

Filesize
64KB

Download
memory/2176-143-0x00007FFBFA950000-0x00007FFBFA960000-memory.dmp

Filesize
64KB

Download
memory/2176-142-0x00007FFBFA950000-0x00007FFBFA960000-memory.dmp

Filesize
64KB

Download
memory/2176-141-0x00007FFBFA950000-0x00007FFBFA960000-memory.dmp

Filesize
64KB

Download
memory/4060-135-0x00007FFBFA950000-0x00007FFBFA960000-memory.dmp

Filesize
64KB

Download
memory/4060-138-0x00007FFBF8150000-0x00007FFBF8160000-memory.dmp

Filesize
64KB

Download
memory/4060-137-0x00007FFBF8150000-0x00007FFBF8160000-memory.dmp

Filesize
64KB

Download
memory/4060-136-0x00007FFBFA950000-0x00007FFBFA960000-memory.dmp

Filesize
64KB

Download
memory/4060-132-0x00007FFBFA950000-0x00007FFBFA960000-memory.dmp

Filesize
64KB

Download
memory/4060-134-0x00007FFBFA950000-0x00007FFBFA960000-memory.dmp

Filesize
64KB

Download
memory/4060-133-0x00007FFBFA950000-0x00007FFBFA960000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads