682e7f4053a133c8fe08dfede3962d5af96f01dff69a72ac0b0f0ba8afc57191

General

Target

682e7f4053a133c8fe08dfede3962d5af96f01dff69a72ac0b0f0ba8afc57191.rtf
Size

1.2MB
MD5

6e752a28a3d4f61fb158099beab88f90
SHA1

d8c18216e718401d37a81674d4f4bb95f16742c6
SHA256

682e7f4053a133c8fe08dfede3962d5af96f01dff69a72ac0b0f0ba8afc57191
SHA512

66bad4bab339a255cded95b6a03df4c149c486deceb23c3fd55080b16d48251bc7ad4db5e5e74c95ad46deebbdbb70fa05ee6fa26ae01e56fa9a89d9ad32e1eb
SSDEEP

24576:ko+0Kiy8TOWMRIHjVK+v8GhCXjyx5VqJKnMbYbor+CzzGxp:x

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	1988	1044	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-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-467127501-3231536288-1690648539-1353842496-3438320807-3953775451-3146523896\DisplayName = "OICE_16_974FA576_32C1D314_1AA1"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-467127501-3231536288-1690648539-1353842496-3438320807-3953775451-3146523896\Children	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_1aa1	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_1aa1\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_1aa1	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-467127501-3231536288-1690648539-1353842496-3438320807-3953775451-3146523896\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-467127501-3231536288-1690648539-1353842496-3438320807-3953775451-3146523896	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-467127501-3231536288-1690648539-1353842496-3438320807-3953775451-3146523896	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-467127501-3231536288-1690648539-1353842496-3438320807-3953775451-3146523896\Moniker = "oice_16_974fa576_32c1d314_1aa1"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_1aa1\Children	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

1044 WINWORD.EXE
1044 WINWORD.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

WINWORD.EXE

pid process

1044 WINWORD.EXE
1044 WINWORD.EXE

Suspicious use of SetWindowsHookEx 18 IoCs

Processes:

WINWORD.EXE

pid	process
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE
1044	WINWORD.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 1044 wrote to memory of 4216	1044	WINWORD.EXE	splwow64.exe
PID 1044 wrote to memory of 4216	1044	WINWORD.EXE	splwow64.exe
PID 1044 wrote to memory of 1988	1044	WINWORD.EXE	FLTLDR.EXE
PID 1044 wrote to memory of 1988	1044	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\682e7f4053a133c8fe08dfede3962d5af96f01dff69a72ac0b0f0ba8afc57191.rtf" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Modifies registry class
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1044

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:4216

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\JPEGIM32.FLT
2⤵
- Process spawned unexpected child process
PID:1988

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc
1⤵
PID:3396

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Packages\oice_16_974fa576_32c1d314_1aa1\AC\Temp\FL57F3.tmp

Filesize
25KB

MD5
d8a8176ab9e7504d6af2b7216cc6ad1d

SHA1
d440f698fd666e11502635bf91ab8a8be3376ccc

SHA256
dca454b88ece53b28d84fe6492a94a0b93c91be840d647e2a645fe5f4b8e1f39

SHA512
730a10fc2b176c0be3987e7e4321819e454c18d8c0d8ba455d90551bf0f1e29cb5f329e6c245c598196965bacc438a29f6944772fb6ac3755b36e00e6b69c7fc

Download Submit
memory/1044-138-0x00007FFEB5DC0000-0x00007FFEB5DD0000-memory.dmp

Filesize
64KB

Download
memory/1044-133-0x00007FFEB8610000-0x00007FFEB8620000-memory.dmp

Filesize
64KB

Download
memory/1044-135-0x00007FFEB8610000-0x00007FFEB8620000-memory.dmp

Filesize
64KB

Download
memory/1044-136-0x00007FFEB8610000-0x00007FFEB8620000-memory.dmp

Filesize
64KB

Download
memory/1044-137-0x00007FFEB5DC0000-0x00007FFEB5DD0000-memory.dmp

Filesize
64KB

Download
memory/1044-132-0x00007FFEB8610000-0x00007FFEB8620000-memory.dmp

Filesize
64KB

Download
memory/1044-134-0x00007FFEB8610000-0x00007FFEB8620000-memory.dmp

Filesize
64KB

Download
memory/1988-140-0x0000000000000000-mapping.dmp

Download
memory/1988-142-0x00007FFEB8610000-0x00007FFEB8620000-memory.dmp

Filesize
64KB

Download
memory/1988-143-0x00007FFEB8610000-0x00007FFEB8620000-memory.dmp

Filesize
64KB

Download
memory/1988-144-0x00007FFEB8610000-0x00007FFEB8620000-memory.dmp

Filesize
64KB

Download
memory/1988-145-0x00007FFEB8610000-0x00007FFEB8620000-memory.dmp

Filesize
64KB

Download
memory/4216-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads