1615c46ae8e9b2f243ed4e124edffeea4cd452fd5a2ad92b496260e1c963ae86

Analysis

max time kernel
139s
max time network
138s
platform
windows10_x64
resource
win10v200430
submitted
08/07/2020, 13:13

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General

Target

fax_3123.xls
Size

144KB
MD5

ae6cec0d6053f9dc4f6f93a5615001fc
SHA1

34639c2f8d2933f7cef1a99b5f3d8996d718e941
SHA256

1615c46ae8e9b2f243ed4e124edffeea4cd452fd5a2ad92b496260e1c963ae86
SHA512

a83dd1e7b04f7f6d0528982200a31b21dd78cfff0a143d189be2aa0044f41d0e1d75ce4ef9ca2b6442ebbd407a9571be005ebc8518d391dfc2963227028007a4

Score

10^/10

Malware Config

Signatures

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE
1068	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1068	EXCEL.EXE

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\EXCEL.EXE is not expected to spawn this process	3336	1068	explorer.exe	67

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1068 wrote to memory of 3336	1068	EXCEL.EXE	72
PID 1068 wrote to memory of 3336	1068	EXCEL.EXE	72
PID 3956 wrote to memory of 1740	3956	explorer.exe	74
PID 3956 wrote to memory of 1740	3956	explorer.exe	74

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	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.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\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1231583446-2617009595-2137880041-1000_Classes\Local Settings	explorer.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\fax_3123.xls"
1⤵
- Suspicious use of SetWindowsHookEx
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of WriteProcessMemory
- Checks processor information in registry
- Enumerates system info in registry
PID:1068
- C:\Windows\explorer.exe
  explorer.exe C:\Users\Admin\AppData\Local\Temp\mR6pEukb.vbs
  2⤵
  - Process spawned unexpected child process
  PID:3336

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Suspicious use of WriteProcessMemory
- Modifies registry class
PID:3956
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\mR6pEukb.vbs"
  2⤵
  PID:1740

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads