b78e040c0d63061f8a66e423ec0aa2fa7f1d3d6c5a488d147493d9d9ea9247f8

Analysis

max time kernel
121s
max time network
123s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
05/10/2024, 01:44

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General

Target

b78e040c0d63061f8a66e423ec0aa2fa7f1d3d6c5a488d147493d9d9ea9247f8.rtf
Size

712KB
MD5

efcf0612773c1c48d6079a7636fdd2e5
SHA1

a36a0b6f409f22fad0f463cef075f52ebad17e67
SHA256

b78e040c0d63061f8a66e423ec0aa2fa7f1d3d6c5a488d147493d9d9ea9247f8
SHA512

e0410e38534f4822056166726e374119a470e87a4e3c1b1b456d6f040888e1c6b95d177b486314f0663bec259c61e15194a423153001d0e567e16cc0c4ef183a
SSDEEP

6144:BwAYwAmu+zZBG91o9zdmLlvtVFZkI1vJED0CsA/HkK:p

Score

8^/10

discovery

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	2912	EQNEDT32.EXE
5	2912	EQNEDT32.EXE

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.EXE

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EQNEDT32.EXE

Office loads VBA resources, possible macro or embedded object present

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
2912	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2984	WINWORD.EXE

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2984	WINWORD.EXE
2984	WINWORD.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2984 wrote to memory of 2720	2984	WINWORD.EXE	34
PID 2984 wrote to memory of 2720	2984	WINWORD.EXE	34
PID 2984 wrote to memory of 2720	2984	WINWORD.EXE	34
PID 2984 wrote to memory of 2720	2984	WINWORD.EXE	34

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\b78e040c0d63061f8a66e423ec0aa2fa7f1d3d6c5a488d147493d9d9ea9247f8.rtf"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2984
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2720

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- System Location Discovery: System Language Discovery
- Launches Equation Editor
PID:2912

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2984-0-0x000000002F411000-0x000000002F412000-memory.dmp

Filesize
4KB

Download
memory/2984-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2984-2-0x000000007124D000-0x0000000071258000-memory.dmp

Filesize
44KB

Download
memory/2984-4-0x000000007124D000-0x0000000071258000-memory.dmp

Filesize
44KB

Download