17f73a5cd04ca12f2a9b359d2871fc6bf198c4952dc715b57970eea0bd78471c

Resubmissions

14-02-2020 12:41

200214-c8mbcdxx2n 8

14-02-2020 08:55

200214-nwlkaf1l7j 8

14-02-2020 05:56

200214-v1sx1y43kx 8

Analysis

max time kernel
138s
max time network
151s
platform
windows10_x64
resource
win10v191014
submitted
14-02-2020 05:56

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General

Target

malware.docx
Size

455KB
MD5

ab284dccb09484ff6a3a116152edcb75
SHA1

68bfb664e9712195e83d401b5775c475842cb72d
SHA256

17f73a5cd04ca12f2a9b359d2871fc6bf198c4952dc715b57970eea0bd78471c
SHA512

5f58a93d32bedfa5d2aaef8ab27ed7a6e264f529295bbc8daadf8b2b8d85732ccfee3ae8d3b7e22f8c9d61f49cd61a098e8415e85b79674e977b0c0cc5b4e5f2

Score

8^/10

Malware Config

Signatures

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

WINWORD.EXE

description	pid	process	target process
PID 4952 wrote to memory of 4648	4952	WINWORD.EXE	salesforce_Report.exe
PID 4952 wrote to memory of 4648	4952	WINWORD.EXE	salesforce_Report.exe
PID 4952 wrote to memory of 4648	4952	WINWORD.EXE	salesforce_Report.exe
PID 4952 wrote to memory of 4752	4952	WINWORD.EXE	salesforce_Report.exe
PID 4952 wrote to memory of 4752	4952	WINWORD.EXE	salesforce_Report.exe
PID 4952 wrote to memory of 4752	4952	WINWORD.EXE	salesforce_Report.exe
PID 4952 wrote to memory of 4848	4952	WINWORD.EXE	salesforce_Report.exe
PID 4952 wrote to memory of 4848	4952	WINWORD.EXE	salesforce_Report.exe
PID 4952 wrote to memory of 4848	4952	WINWORD.EXE	salesforce_Report.exe

Executes dropped EXE 3 IoCs

Processes:

salesforce_Report.exesalesforce_Report.exesalesforce_Report.exe

pid process

4648 salesforce_Report.exe
4752 salesforce_Report.exe
4848 salesforce_Report.exe

pid	process
4648	salesforce_Report.exe
4752	salesforce_Report.exe
4848	salesforce_Report.exe

Checks processor information in registry 2 TTPs 2 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 opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	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

NTFS ADS 1 IoCs

Processes:

WINWORD.EXE

description ioc process

File opened for modification C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe:Zone.Identifier WINWORD.EXE
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

4952 WINWORD.EXE
4952 WINWORD.EXE

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe:Zone.Identifier	WINWORD.EXE

Suspicious use of SetWindowsHookEx 11 IoCs

Processes:

WINWORD.EXEsalesforce_Report.exesalesforce_Report.exesalesforce_Report.exe

pid	process
4952	WINWORD.EXE
4952	WINWORD.EXE
4952	WINWORD.EXE
4952	WINWORD.EXE
4952	WINWORD.EXE
4952	WINWORD.EXE
4952	WINWORD.EXE
4952	WINWORD.EXE
4752	salesforce_Report.exe
4648	salesforce_Report.exe
4848	salesforce_Report.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\malware.docx" /o ""
1⤵
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
- NTFS ADS
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:4952

C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe
"C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4648

C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe
"C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4752

C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe
"C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
PID:4848

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe

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C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe

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C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe

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C:\Users\Admin\AppData\Local\Temp\salesforce_Report.exe

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