bde27f8294e3a01757cc63c51615ee623ba79a16bd188243be0410d8446a4d21

General

Target

1810657040_03162021.xls
Size

231KB
MD5

ba059e643683b9f9d9ac90019e9c01be
SHA1

343106168eb7e0e8ba9b1f273238770bf408c0ca
SHA256

eebbfb1607fff4c6cbb6ff226dbe362071d98ba36f87bc2c731365e095af7a9c
SHA512

4ddbcf478bcbb5eb34618b0969206660e4a7c7bedfc4fcbf2431917aa68930fc4264f5d8f88b10a1f25d387e8349260f9a70e46807c1cb8f27d9b83269706f87

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 IoCs

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

Processes:

Rundll32.exeRundll32.exeRundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3860	1048	Rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2328	1048	Rundll32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4036	1048	Rundll32.exe	EXCEL.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:

EXCEL.EXE

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

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1048 EXCEL.EXE

Suspicious use of SetWindowsHookEx 22 IoCs

Processes:

EXCEL.EXE

pid	process
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE
1048	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 1048 wrote to memory of 3860	1048	EXCEL.EXE	Rundll32.exe
PID 1048 wrote to memory of 3860	1048	EXCEL.EXE	Rundll32.exe
PID 1048 wrote to memory of 2328	1048	EXCEL.EXE	Rundll32.exe
PID 1048 wrote to memory of 2328	1048	EXCEL.EXE	Rundll32.exe
PID 1048 wrote to memory of 4036	1048	EXCEL.EXE	Rundll32.exe
PID 1048 wrote to memory of 4036	1048	EXCEL.EXE	Rundll32.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\1810657040_03162021.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1048

C:\Windows\SYSTEM32\Rundll32.exe
Rundll32 ..\Kiod.hod,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:3860

C:\Windows\SYSTEM32\Rundll32.exe
Rundll32 ..\Kiod.hod1,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:2328

C:\Windows\SYSTEM32\Rundll32.exe
Rundll32 ..\Kiod.hod2,DllRegisterServer
2⤵
- Process spawned unexpected child process
PID:4036

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/1048-2-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1048-3-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1048-4-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1048-5-0x00007FF920240000-0x00007FF920250000-memory.dmp

Filesize
64KB

Download
memory/1048-6-0x00007FF943970000-0x00007FF943FA7000-memory.dmp

Filesize
6.2MB

Download
memory/2328-8-0x0000000000000000-mapping.dmp

Download
memory/3860-7-0x0000000000000000-mapping.dmp

Download
memory/4036-9-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads