1c9bbe414128de9b946727e8ac7fe2edf9c28731fabbc564dee935a97721d358

General

Target

RF Oferta_07102021.doc
Size

500KB
MD5

c977721c2b6e22a4bb29bc723e88dc14
SHA1

33e5d7488767291024cbf2581fbe360384c7d67a
SHA256

1c9bbe414128de9b946727e8ac7fe2edf9c28731fabbc564dee935a97721d358
SHA512

93cc581978c4b35f743a6bcd7eb48efe590141be3d4f636e44b6a000332ccd4007745aa014806d3375f485a7db3ddf7630b2b24c71093eebeb890786c1603d3b

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	4740	3704	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-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805\DisplayName = "OICE_16_974FA576_32C1D314_BC4"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_bc4\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_bc4\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_bc4	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805\Children	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805\Moniker = "oice_16_974fa576_32c1d314_bc4"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805\Children	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_bc4	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-1748945928-1010638297-1967121281-33878849-1026945868-3270808461-2980858805	WINWORD.EXE

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{4DB6386E-9748-495E-BC0A-C3A06997FCA0}\abdtfhghgeghDh.ScT:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

3704 WINWORD.EXE
3704 WINWORD.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

Processes:

WINWORD.EXE

pid	process
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE
3704	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 3704 wrote to memory of 4740	3704	WINWORD.EXE	FLTLDR.EXE
PID 3704 wrote to memory of 4740	3704	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\RF Oferta_07102021.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:3704

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:4740

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_bc4\AC\Temp\FLD2B7.tmp
MD5
cfdd47b3d5a565f7aeabd546321d415c

SHA1
8d86d4a4922815abd484c92c394e8776b82caeee

SHA256
305f737d859f2fd9c766b8478f414ea195d940410350fbe62df472879f368500

SHA512
ef212a1835eca01674b58d67bc85c309e34ad9a074f445ed26beb6483354a2de1ca348d0dfa0b405757e695c6e656a909b5b0f3f47d71263538d1513c98b9b3d

Download Submit
memory/3704-123-0x00007FFBF1540000-0x00007FFBF262E000-memory.dmp

Filesize
16.9MB

Download
memory/3704-117-0x00007FFBD6230000-0x00007FFBD6240000-memory.dmp

Filesize
64KB

Download
memory/3704-118-0x00007FFBD6230000-0x00007FFBD6240000-memory.dmp

Filesize
64KB

Download
memory/3704-120-0x00007FFBD6230000-0x00007FFBD6240000-memory.dmp

Filesize
64KB

Download
memory/3704-119-0x00007FFBF7530000-0x00007FFBFA053000-memory.dmp

Filesize
43.1MB

Download
memory/3704-115-0x00007FFBD6230000-0x00007FFBD6240000-memory.dmp

Filesize
64KB

Download
memory/3704-124-0x00007FFBEF640000-0x00007FFBF1535000-memory.dmp

Filesize
31.0MB

Download
memory/3704-116-0x00007FFBD6230000-0x00007FFBD6240000-memory.dmp

Filesize
64KB

Download
memory/4740-361-0x0000000000000000-mapping.dmp

Download
memory/4740-365-0x00007FFBD6230000-0x00007FFBD6240000-memory.dmp

Filesize
64KB

Download
memory/4740-364-0x00007FFBD6230000-0x00007FFBD6240000-memory.dmp

Filesize
64KB

Download
memory/4740-363-0x00007FFBD6230000-0x00007FFBD6240000-memory.dmp

Filesize
64KB

Download
memory/4740-367-0x00007FFBD6230000-0x00007FFBD6240000-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