4de0cdd480990aad05acf6c178e4711cd05bf0bc83b4c65fe0e0c0003832f5d6

General

Target

material.11.20.doc
Size

142KB
MD5

96d1a0a87b63e08f2b2299841cd0bf52
SHA1

f89fd556d4bdfd8052e2a5c29164823ab79a6923
SHA256

4de0cdd480990aad05acf6c178e4711cd05bf0bc83b4c65fe0e0c0003832f5d6
SHA512

c2ee88dcaceee3fb638a357e2a4f5a7fcd0a73cf2cda370e924ac4b9581a819435250a5598eccb1c338467b815d9a9037f33a0e0891e3595b4a0620f1085a683

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:

rundll32.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	1172	1400	rundll32.exe	WINWORD.EXE

Blacklisted process makes network request 6 IoCs

Processes:

rundll32.exe

flow pid process

28 2068 rundll32.exe
30 2068 rundll32.exe
36 2068 rundll32.exe
38 2068 rundll32.exe
40 2068 rundll32.exe
41 2068 rundll32.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

2068 rundll32.exe

flow	pid	process
28	2068	rundll32.exe
30	2068	rundll32.exe
36	2068	rundll32.exe
38	2068	rundll32.exe
40	2068	rundll32.exe
41	2068	rundll32.exe

pid	process
2068	rundll32.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

Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.

Processes:

description flow ioc

HTTP User-Agent header 19 Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

1400 WINWORD.EXE
1400 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

rundll32.exe

pid process

2068 rundll32.exe
2068 rundll32.exe

description	flow	ioc
HTTP User-Agent header	19	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

pid	process
2068	rundll32.exe
2068	rundll32.exe

Suspicious use of SetWindowsHookEx 18 IoCs

Processes:

WINWORD.EXE

pid	process
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE
1400	WINWORD.EXE

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

WINWORD.EXErundll32.exe

description	pid	process	target process
PID 1400 wrote to memory of 1172	1400	WINWORD.EXE	rundll32.exe
PID 1400 wrote to memory of 1172	1400	WINWORD.EXE	rundll32.exe
PID 1172 wrote to memory of 2068	1172	rundll32.exe	rundll32.exe
PID 1172 wrote to memory of 2068	1172	rundll32.exe	rundll32.exe
PID 1172 wrote to memory of 2068	1172	rundll32.exe	rundll32.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\material.11.20.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1400

C:\Windows\SYSTEM32\rundll32.exe
rundll32 C:\Users\Admin\AppData\Local\Temp\Fxrri.pdf,ShowDialogA -r
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:1172

C:\Windows\SysWOW64\rundll32.exe
rundll32 C:\Users\Admin\AppData\Local\Temp\Fxrri.pdf,ShowDialogA -r
3⤵
- Blacklisted process makes network request
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
PID:2068

Network

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\Temp\Fxrri.pdf
MD5
57fb48d6a4897dd5652493026639792a

SHA1
aa14009859bb1f2ef9c997cce015311f5524c387

SHA256
af887107d68c47636d9e7ec110b66afd84290257a92c02fcd0ab368c43fcf46c

SHA512
279cbbfac052e7abc479a0162dd82730d93f798681db08ead8f251e5e3888712f72030b22ec3e1280ad8df7a6b48bc1a98bd0240bfd94558ad6c9d75e9e7b250

Download Submit
\Users\Admin\AppData\Local\Temp\Fxrri.pdf
MD5
57fb48d6a4897dd5652493026639792a

SHA1
aa14009859bb1f2ef9c997cce015311f5524c387

SHA256
af887107d68c47636d9e7ec110b66afd84290257a92c02fcd0ab368c43fcf46c

SHA512
279cbbfac052e7abc479a0162dd82730d93f798681db08ead8f251e5e3888712f72030b22ec3e1280ad8df7a6b48bc1a98bd0240bfd94558ad6c9d75e9e7b250

Download Submit
memory/1172-6-0x0000000000000000-mapping.dmp

Download
memory/1400-0-0x00007FFB52C70000-0x00007FFB532A7000-memory.dmp

Filesize
6.2MB

Download
memory/2068-8-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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