1ffe8a0c22c433b676f40639e236a1c7cc58656be5150f1bd4dc7f24d807c761

General

Target
Payment Advice.doc
Size 302KB
Sample201109-vflx87rm8j
SHA256 1ffe8a0c22c433b676f40639e236a1c7cc58656be5150f1bd4dc7f24d807c761
MD5 b5dc38b791076c31153ff6310b928113
SHA1 9baeef431b0d1705291292e6f9d311b5f77126ad
SHA512 a722974d20384f908fcf390739b4aaf1151da1fc06377e7e19f0aac8b7289775e7ce4672ecd350ecb5074be59131ab40db90c030ae60b10f339d2297714312b1
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	1820	1020	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE

Modifies registry class 10 IoCs

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_2a84\Children	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-365650704-567606009-2344834462-2089401680-632055166-3228455616-2727553319	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-365650704-567606009-2344834462-2089401680-632055166-3228455616-2727553319\DisplayName = "OICE_16_974FA576_32C1D314_2A84"	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-365650704-567606009-2344834462-2089401680-632055166-3228455616-2727553319\Children	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_2a84	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_2a84	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-365650704-567606009-2344834462-2089401680-632055166-3228455616-2727553319\Children	WINWORD.EXE
Key created	\Registry\User\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-365650704-567606009-2344834462-2089401680-632055166-3228455616-2727553319	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Mappings\S-1-15-2-365650704-567606009-2344834462-2089401680-632055166-3228455616-2727553319\Moniker = "oice_16_974fa576_32c1d314_2a84"	WINWORD.EXE
Key deleted	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\oice_16_974fa576_32c1d314_2a84\Children	WINWORD.EXE

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\{4CB1EF79-952E-40B5-A074-BFDF3FE165F6}\Abctfhghghghgh£.scT:Zone.Identifier	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
1020	WINWORD.EXE
1020	WINWORD.EXE

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
1020	WINWORD.EXE
1020	WINWORD.EXE
1020	WINWORD.EXE
1020	WINWORD.EXE
1020	WINWORD.EXE
1020	WINWORD.EXE
1020	WINWORD.EXE
1020	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1020 wrote to memory of 1820	1020	WINWORD.EXE	75
PID 1020 wrote to memory of 1820	1020	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\Payment Advice.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:1020
- 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:1820

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/1020-0-0x00007FFF28BC0000-0x00007FFF291F7000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads