0bf4952eb4a7081a910bf9d122b6ff8fcffccd5d39578e57c98b5b3a16f81816

General

Target

ioyyf_com_ursnif.doc
Size

147KB
MD5

5565bd451356b4002215d2b842b13954
SHA1

162b25a6c67f15e4a0907bffc87bdffdb7c57b4c
SHA256

0bf4952eb4a7081a910bf9d122b6ff8fcffccd5d39578e57c98b5b3a16f81816
SHA512

9aaf88786ca24828d7f9431d72e4a51ff846163a32f1cae78746a4b60daccf183a2b5272d26c3c6e65bd5366c264bd7c7718861f7f5e8257e864b67d569b8975

Score

10^/10

Malware Config

Signatures

Suspicious use of SetWindowsHookEx 19 IoCs

Processes:

WINWORD.EXE

pid	process
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE
640	WINWORD.EXE

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

640 WINWORD.EXE
640 WINWORD.EXE

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

regsvr32.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	3088	640	regsvr32.exe	WINWORD.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 640 wrote to memory of 3088	640	WINWORD.EXE	regsvr32.exe
PID 640 wrote to memory of 3088	640	WINWORD.EXE	regsvr32.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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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

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\ioyyf_com_ursnif.doc" /o ""
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
PID:640

C:\Windows\System32\regsvr32.exe
"C:\Windows\System32\regsvr32.exe" Nv.tmp
2⤵
- Process spawned unexpected child process
PID:3088

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/640-0-0x0000027417606000-0x000002741763C000-memory.dmp

Filesize
216KB

Download
memory/640-1-0x000002741763C000-0x0000027417641000-memory.dmp

Filesize
20KB

Download
memory/640-2-0x000002741763C000-0x0000027417641000-memory.dmp

Filesize
20KB

Download
memory/3088-3-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads