39f9e4df37b9d4b3e5ad5df753c9e8c3617472f3cfa778e43ddd822544455788

General

Target

PO sept2116 FRP-SHM.doc
Size

341KB
MD5

dc9a33a35b76796e46c64dd1b464b12f
SHA1

a235e802a62465a8985af532730d89e60f17f982
SHA256

39f9e4df37b9d4b3e5ad5df753c9e8c3617472f3cfa778e43ddd822544455788
SHA512

f07653cea29668a76197ae59c5ca7e918517d068a5050df4a5bd1d3261a1451df7d164c197151a9c0dbd61b697c66054b9383d7b92a3c73925ad1bfaacc07f94

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	3928	628	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 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-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-2655489379-1601221536-1756726240-1460485878-27669589-255327476-2886430322\Children	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_3f7a	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_CLASSES\LOCAL SETTINGS\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\APPCONTAINER\MAPPINGS\S-1-15-2-2655489379-1601221536-1756726240-1460485878-27669589-255327476-2886430322\CHILDREN	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_3f7a\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_CLASSES\LOCAL SETTINGS\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\APPCONTAINER\STORAGE\OICE_16_974FA576_32C1D314_3F7A\CHILDREN	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_3f7a	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-2655489379-1601221536-1756726240-1460485878-27669589-255327476-2886430322	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-2655489379-1601221536-1756726240-1460485878-27669589-255327476-2886430322	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-2655489379-1601221536-1756726240-1460485878-27669589-255327476-2886430322\DisplayName = "OICE_16_974FA576_32C1D314_3F7A"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-2655489379-1601221536-1756726240-1460485878-27669589-255327476-2886430322\Moniker = "oice_16_974fa576_32c1d314_3f7a"	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{E749516F-38D3-4FA8-B9F6-114096C744F8}\abdtfhghgeghDh.ScT:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

628 WINWORD.EXE
628 WINWORD.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

WINWORD.EXE

pid	process
628	WINWORD.EXE
628	WINWORD.EXE
628	WINWORD.EXE
628	WINWORD.EXE
628	WINWORD.EXE
628	WINWORD.EXE
628	WINWORD.EXE
628	WINWORD.EXE
628	WINWORD.EXE
628	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description pid process target process

PID 628 wrote to memory of 3928 628 WINWORD.EXE FLTLDR.EXE
PID 628 wrote to memory of 3928 628 WINWORD.EXE FLTLDR.EXE

description	pid	process	target process
PID 628 wrote to memory of 3928	628	WINWORD.EXE	FLTLDR.EXE
PID 628 wrote to memory of 3928	628	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\PO sept2116 FRP-SHM.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:628

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:3928

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_3f7a\AC\Temp\FLE615.tmp
MD5
0758e384887aa003836be27fcd16d179

SHA1
f991b1da1c6167d1bf3b55cfe821a7ad8b46dd3b

SHA256
ec38d435cb9abfbc1fc9c9165b1fc6f1a7cf3028126fb08bf2a33ce842b038ce

SHA512
90d60153551a47adc862503b9cfc365a8778a4e077ace01a2336cdefd39cdc1d11dce81c176aa58cd1524b1a00fa867ec391fd1396bd271730e73857f01ac0e8

Download Submit
memory/628-122-0x0000025AA6C50000-0x0000025AA7D3E000-memory.dmp

Filesize
16.9MB

Download
memory/628-116-0x00007FFF50D30000-0x00007FFF50D40000-memory.dmp

Filesize
64KB

Download
memory/628-117-0x00007FFF50D30000-0x00007FFF50D40000-memory.dmp

Filesize
64KB

Download
memory/628-119-0x00007FFF50D30000-0x00007FFF50D40000-memory.dmp

Filesize
64KB

Download
memory/628-118-0x00007FFF71E90000-0x00007FFF749B3000-memory.dmp

Filesize
43.1MB

Download
memory/628-114-0x00007FFF50D30000-0x00007FFF50D40000-memory.dmp

Filesize
64KB

Download
memory/628-123-0x00007FFF6A4B0000-0x00007FFF6C3A5000-memory.dmp

Filesize
31.0MB

Download
memory/628-115-0x00007FFF50D30000-0x00007FFF50D40000-memory.dmp

Filesize
64KB

Download
memory/3928-360-0x0000000000000000-mapping.dmp

Download
memory/3928-362-0x00007FFF50D30000-0x00007FFF50D40000-memory.dmp

Filesize
64KB

Download
memory/3928-363-0x00007FFF50D30000-0x00007FFF50D40000-memory.dmp

Filesize
64KB

Download
memory/3928-364-0x00007FFF50D30000-0x00007FFF50D40000-memory.dmp

Filesize
64KB

Download
memory/3928-365-0x00007FFF50D30000-0x00007FFF50D40000-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