228264e8f57dc120e866db9789ed5cf7456a486024dcd6d83a60c0b02cc11158

General

Target
SKMBT_C280190724201102.doc
Size 212KB
Sample201102-acrc1bbdne
SHA256 228264e8f57dc120e866db9789ed5cf7456a486024dcd6d83a60c0b02cc11158
MD5 8b40f760a193a3c91ab4a0a2b425ad18
SHA1 3c171a4d843deec19055254c62948f766351eb3f
SHA512 8c8c7fc85a7d6effa5dd8b04b0cab2fcb6152da2b306424de1487f5af292273733e5790f46fec836affb424c4e241663a4d656097840273c2a4241ead680b056
MD5 SHA1 SHA512

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.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	496	636	FLTLDR.EXE	67

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

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

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

description	ioc	Process
Key deleted	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-3360322573-4021145365-3613386673-3746613791-1067747887-3684384709-3539792391	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-3360322573-4021145365-3613386673-3746613791-1067747887-3684384709-3539792391	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-3360322573-4021145365-3613386673-3746613791-1067747887-3684384709-3539792391\DisplayName = "OICE_16_974FA576_32C1D314_3260"	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-3360322573-4021145365-3613386673-3746613791-1067747887-3684384709-3539792391\Moniker = "oice_16_974fa576_32c1d314_3260"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_3260\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_CLASSES\LOCAL SETTINGS\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\APPCONTAINER\STORAGE\OICE_16_974FA576_32C1D314_3260\CHILDREN	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_CLASSES\LOCAL SETTINGS\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\APPCONTAINER\MAPPINGS\S-1-15-2-3360322573-4021145365-3613386673-3746613791-1067747887-3684384709-3539792391\CHILDREN	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-3360322573-4021145365-3613386673-3746613791-1067747887-3684384709-3539792391\Children	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_3260	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_3260	WINWORD.EXE

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{893424FA-9839-4288-9A66-C0364E9FF94D}\Abctfhghgdghghž.scT:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
636	WINWORD.EXE
636	WINWORD.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
636	WINWORD.EXE
636	WINWORD.EXE
636	WINWORD.EXE
636	WINWORD.EXE
636	WINWORD.EXE
636	WINWORD.EXE
636	WINWORD.EXE
636	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 636 wrote to memory of 496	636	WINWORD.EXE	75
PID 636 wrote to memory of 496	636	WINWORD.EXE	75

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\SKMBT_C280190724201102.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:636
- 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:496

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

memory/636-0-0x0000023885790000-0x0000023885DC7000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads