5f815bd7f39cccb4b92bea3d36861d6844eeea3307e86b237d794c660d1305c3

General

Target

INVOICE_00082925.doc
Size

1.0MB
MD5

3347d22680185efb3cd73d55b55a5c6d
SHA1

36f0afde99cdabe38dbe7c281b61c17b1ca41372
SHA256

5f815bd7f39cccb4b92bea3d36861d6844eeea3307e86b237d794c660d1305c3
SHA512

54cd4b8033702d2192fe8d860df7a092a23675e1bf6450f5cc3862346ef6f078b6b3de03da81d246284adf8f7a9362909fde5efa361ce9135e9c29f64a0461db

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	3884	992	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\Storage\oice_16_974fa576_32c1d314_1cb6\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_1cb6\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_1cb6	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-1-15-2-1444114938-890774917-1627887985-1525221817-4226718548-2160363775-2264621074\DisplayName = "OICE_16_974FA576_32C1D314_1CB6"	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-1-15-2-1444114938-890774917-1627887985-1525221817-4226718548-2160363775-2264621074\Moniker = "oice_16_974fa576_32c1d314_1cb6"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1444114938-890774917-1627887985-1525221817-4226718548-2160363775-2264621074\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_1cb6	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1444114938-890774917-1627887985-1525221817-4226718548-2160363775-2264621074\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1444114938-890774917-1627887985-1525221817-4226718548-2160363775-2264621074	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1444114938-890774917-1627887985-1525221817-4226718548-2160363775-2264621074	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{A1393056-5ACD-4649-A3C8-54CFA74E2154}\abdtfhghgdghghœ.ScT:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

992 WINWORD.EXE
992 WINWORD.EXE
Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

WINWORD.EXE

pid process

992 WINWORD.EXE
992 WINWORD.EXE
992 WINWORD.EXE
992 WINWORD.EXE
992 WINWORD.EXE
992 WINWORD.EXE
992 WINWORD.EXE
992 WINWORD.EXE
992 WINWORD.EXE
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description pid process target process

PID 992 wrote to memory of 3884 992 WINWORD.EXE FLTLDR.EXE
PID 992 wrote to memory of 3884 992 WINWORD.EXE FLTLDR.EXE

pid	process
992	WINWORD.EXE
992	WINWORD.EXE

pid	process
992	WINWORD.EXE
992	WINWORD.EXE
992	WINWORD.EXE
992	WINWORD.EXE
992	WINWORD.EXE
992	WINWORD.EXE
992	WINWORD.EXE
992	WINWORD.EXE
992	WINWORD.EXE

description	pid	process	target process
PID 992 wrote to memory of 3884	992	WINWORD.EXE	FLTLDR.EXE
PID 992 wrote to memory of 3884	992	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\INVOICE_00082925.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:992

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:3884

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_1cb6\AC\Temp\FLC421.tmp
MD5
3912e0c6a5864bf800db2b1dd1e6f119

SHA1
4f6c40f9367517e3aad2346a23a32074d9d021df

SHA256
18b20659ee18d37e3ef36c260d4c5a37a92270d21ceef8510ae04345a2c5efc6

SHA512
7151f69f9a4f6015e19a3acea109833b742214157742bcfdcc5bf7330c63fef7f08ab595432b976955a14de3234b541e186e050b8aeb7d234861b8ad060f5f44

Download Submit
memory/992-122-0x00007FFED0020000-0x00007FFED110E000-memory.dmp

Filesize
16.9MB

Download
memory/992-116-0x00007FFEB3A10000-0x00007FFEB3A20000-memory.dmp

Filesize
64KB

Download
memory/992-117-0x00007FFEB3A10000-0x00007FFEB3A20000-memory.dmp

Filesize
64KB

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memory/992-119-0x00007FFEB3A10000-0x00007FFEB3A20000-memory.dmp

Filesize
64KB

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memory/992-118-0x00007FFED55E0000-0x00007FFED8103000-memory.dmp

Filesize
43.1MB

Download
memory/992-114-0x00007FFEB3A10000-0x00007FFEB3A20000-memory.dmp

Filesize
64KB

Download
memory/992-123-0x00007FFECD690000-0x00007FFECF585000-memory.dmp

Filesize
31.0MB

Download
memory/992-115-0x00007FFEB3A10000-0x00007FFEB3A20000-memory.dmp

Filesize
64KB

Download
memory/3884-360-0x0000000000000000-mapping.dmp

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memory/3884-362-0x00007FFEB3A10000-0x00007FFEB3A20000-memory.dmp

Filesize
64KB

Download
memory/3884-363-0x00007FFEB3A10000-0x00007FFEB3A20000-memory.dmp

Filesize
64KB

Download
memory/3884-364-0x00007FFEB3A10000-0x00007FFEB3A20000-memory.dmp

Filesize
64KB

Download
memory/3884-370-0x00007FFEB3A10000-0x00007FFEB3A20000-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