aaa32ff3e41c61fe828f0850e702f5ed7ffd6177c4bf80ed15324525537f44cd

General

Target

plan-515372324.xlsb
Size

155KB
MD5

08e52afbefa423fb9f1ea0af88a4880e
SHA1

2d688dfee28f75553bc1d3633f891d2e70e0408b
SHA256

aaa32ff3e41c61fe828f0850e702f5ed7ffd6177c4bf80ed15324525537f44cd
SHA512

7a5400ec826ecaa0fa6a8beb9022bd9e918f11cf97e57d747477720889f7203af983620e2f7b543fb1ff5cc5a9eff13447d6353506c862dfe2ebd23b7a63dee8

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://khangland.pro/v8gEDeSB/sun.html

xlm40.dropper

https://jaipurbynite.com/stLdQs9R53/sun.htm

Signatures

Process spawned unexpected child process 2 IoCs

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

Processes:

regsvr32.exeregsvr32.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	1836	776	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2580	776	regsvr32.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 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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	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

776 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE
776	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 776 wrote to memory of 2776	776	EXCEL.EXE	splwow64.exe
PID 776 wrote to memory of 2776	776	EXCEL.EXE	splwow64.exe
PID 776 wrote to memory of 1836	776	EXCEL.EXE	regsvr32.exe
PID 776 wrote to memory of 1836	776	EXCEL.EXE	regsvr32.exe
PID 776 wrote to memory of 2580	776	EXCEL.EXE	regsvr32.exe
PID 776 wrote to memory of 2580	776	EXCEL.EXE	regsvr32.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\plan-515372324.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:776

C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
2⤵
PID:2776

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 ..\palpy1.dll
2⤵
- Process spawned unexpected child process
PID:1836

C:\Windows\SYSTEM32\regsvr32.exe
regsvr32 ..\palpy2.dll
2⤵
- Process spawned unexpected child process
PID:2580

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

memory/776-114-0x00007FF6B7B70000-0x00007FF6BB126000-memory.dmp

Filesize
53.7MB

Download
memory/776-115-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/776-116-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/776-117-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/776-118-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/776-119-0x00007FFDD78A0000-0x00007FFDD78B0000-memory.dmp

Filesize
64KB

Download
memory/776-122-0x00007FFDF79B0000-0x00007FFDF8A9E000-memory.dmp

Filesize
16.9MB

Download
memory/776-123-0x0000012160980000-0x0000012162875000-memory.dmp

Filesize
31.0MB

Download
memory/1836-180-0x0000000000000000-mapping.dmp

Download
memory/2580-181-0x0000000000000000-mapping.dmp

Download
memory/2776-179-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads