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	1896	4444	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-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-608464732-463791085-552423675-1062160018-1209987467-4067837422-802184889\DisplayName = "OICE_16_974FA576_32C1D314_1FF9"	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_1ff9\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-1-15-2-608464732-463791085-552423675-1062160018-1209987467-4067837422-802184889\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-1-15-2-608464732-463791085-552423675-1062160018-1209987467-4067837422-802184889	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-608464732-463791085-552423675-1062160018-1209987467-4067837422-802184889	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-1-15-2-608464732-463791085-552423675-1062160018-1209987467-4067837422-802184889\Moniker = "oice_16_974fa576_32c1d314_1ff9"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-3686645723-710336880-414668232-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-608464732-463791085-552423675-1062160018-1209987467-4067837422-802184889\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_1ff9	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_1ff9\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_1ff9	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{A839C72D-692A-45F5-9C4B-F361E2EAEE25}\abdtfhghgdghghœ.ScT:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

4444 WINWORD.EXE
4444 WINWORD.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

WINWORD.EXE

pid	process
4444	WINWORD.EXE
4444	WINWORD.EXE
4444	WINWORD.EXE
4444	WINWORD.EXE
4444	WINWORD.EXE
4444	WINWORD.EXE
4444	WINWORD.EXE
4444	WINWORD.EXE
4444	WINWORD.EXE
4444	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 4444 wrote to memory of 1896	4444	WINWORD.EXE	FLTLDR.EXE
PID 4444 wrote to memory of 1896	4444	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:4444

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:1896

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_1ff9\AC\Temp\FL7D82.tmp
MD5
9cce86e86c7bce7b1293d99735ddfca9

SHA1
8a772d7f97a1104435acd17f2222eaae29eb9ba1

SHA256
d445d3c758f6bea958101c55c929008faa6a090001aae936d36f0c9033de4fa4

SHA512
bb8a735633a8ebcae658d18af5d9f78a636bcc995a4315b42c6ec17a8a36c56fc0054a60ddadf1bf14a20674e92479c77fc65dfc13681d2f313494226c8965ac

Download Submit
memory/1896-276-0x0000000000000000-mapping.dmp

Download
memory/1896-371-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/1896-294-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/1896-292-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/1896-290-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/4444-117-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/4444-123-0x00007FF9CD2D0000-0x00007FF9CF1C5000-memory.dmp

Filesize
31.0MB

Download
memory/4444-122-0x00007FF9D0560000-0x00007FF9D164E000-memory.dmp

Filesize
16.9MB

Download
memory/4444-118-0x00007FF9D55C0000-0x00007FF9D80E3000-memory.dmp

Filesize
43.1MB

Download
memory/4444-119-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/4444-114-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/4444-116-0x00007FF9B3A10000-0x00007FF9B3A20000-memory.dmp

Filesize
64KB

Download
memory/4444-115-0x00007FF9B3A10000-0x00007FF9B3A20000-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