2214bdc78b558176a17484bcc02079a5470e0b49073d50d19b522d67dc4396e3

Analysis

max time kernel
150s
max time network
154s
platform
windows10_x64
resource
win10v20210410
submitted
30-07-2021 15:26

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General

Target

52969fae09c2428c701a8b51a20c1eb07bab1bca79acb21eaa910d764533155d.rtf
Size

1.0MB
MD5

28463ecd87dbf6503d58e158785965ac
SHA1

12c8088fc0ac36692e9067a1e28c1ef7bf46de46
SHA256

52969fae09c2428c701a8b51a20c1eb07bab1bca79acb21eaa910d764533155d
SHA512

fa9ad0f8a0de9120e0e6439548f7c3c2c22399b06818e3baaacb0ed5306610a385c594a7c7a763509e47bcfa0aa105c9480ebd37f810b7e756eff17697051061

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	3904	364	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 deleted	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-2551719852-3230894977-3211800512-1466436719-3983687911-3636005082-2304353340	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_20df\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_20df	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-1-15-2-2551719852-3230894977-3211800512-1466436719-3983687911-3636005082-2304353340\Moniker = "oice_16_974fa576_32c1d314_20df"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-2551719852-3230894977-3211800512-1466436719-3983687911-3636005082-2304353340\Children	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_20df	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_20DF\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-1-15-2-2551719852-3230894977-3211800512-1466436719-3983687911-3636005082-2304353340\CHILDREN	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-2551719852-3230894977-3211800512-1466436719-3983687911-3636005082-2304353340	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-1-15-2-2551719852-3230894977-3211800512-1466436719-3983687911-3636005082-2304353340\DisplayName = "OICE_16_974FA576_32C1D314_20DF"	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{A8E66957-32CD-4406-B0B7-F3D3FA03E52B}\abdtfhghgdghghœ.ScT:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

364 WINWORD.EXE
364 WINWORD.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

WINWORD.EXE

pid	process
364	WINWORD.EXE
364	WINWORD.EXE
364	WINWORD.EXE
364	WINWORD.EXE
364	WINWORD.EXE
364	WINWORD.EXE
364	WINWORD.EXE
364	WINWORD.EXE
364	WINWORD.EXE
364	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description pid process target process

PID 364 wrote to memory of 3904 364 WINWORD.EXE FLTLDR.EXE
PID 364 wrote to memory of 3904 364 WINWORD.EXE FLTLDR.EXE

description	pid	process	target process
PID 364 wrote to memory of 3904	364	WINWORD.EXE	FLTLDR.EXE
PID 364 wrote to memory of 3904	364	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\52969fae09c2428c701a8b51a20c1eb07bab1bca79acb21eaa910d764533155d.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:364

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:3904

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Packages\oice_16_974fa576_32c1d314_20df\AC\Temp\FL4433.tmp
MD5
dc463992c2f659be85d40eb3b8991b4b

SHA1
6de672e23630e3d58225a77b9d09dd70df680947

SHA256
fcfd5799afb5acc6cab4737f03a3583f8cf94073f498cdca7a4bf8c9cd1fb340

SHA512
959b6f6ccb190f5bf1cd3f6a68e0b151b9dc6d3247104423ff0cba5fdf9c529999419865cdab96bdd9c56c19cea80ac0c2753fca7dd5671d8d7c028df183d0e6

Download Submit
memory/364-122-0x00007FFDBDFC0000-0x00007FFDBF0AE000-memory.dmp

Filesize
16.9MB

Download
memory/364-116-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/364-117-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/364-119-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/364-118-0x00007FFDC44E0000-0x00007FFDC7003000-memory.dmp

Filesize
43.1MB

Download
memory/364-114-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/364-123-0x00007FFDBC0C0000-0x00007FFDBDFB5000-memory.dmp

Filesize
31.0MB

Download
memory/364-115-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3904-316-0x0000000000000000-mapping.dmp

Download
memory/3904-326-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3904-329-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3904-332-0x00007FFDA2790000-0x00007FFDA27A0000-memory.dmp

Filesize
64KB

Download
memory/3904-361-0x00007FFDA2790000-0x00007FFDA27A0000-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