b8ecdf8abced3289897d421af8aff8e460d1ceee871d59961ee56e9bb0543cc0

General

Target

b8ecdf8abced3289897d421af8aff8e460d1ceee871d59961ee56e9bb0543cc0.xls
Size

95KB
MD5

5f391e470891a0c6fa841abe3a30e8bb
SHA1

1be9a0dfabf23bf88334a8a4513778d4d0d02fac
SHA256

b8ecdf8abced3289897d421af8aff8e460d1ceee871d59961ee56e9bb0543cc0
SHA512

664838d59279d9fdf6b151fe621fd60089c469acf77369e581d67016ee0977c7f2567fd5d68f8f9834ee1acc2e9a413fb17aebd8737f4b1f6fd07e6b69d831f0

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://www.sunflowerlaboratory.in/fonts/79Tq62ly/

xlm40.dropper

http://dirigent.co.uk/vardagsekonomi/iC36jJ4J1cf/

xlm40.dropper

http://agtrade.hu/images/kiQYmOs2tSKq/

xlm40.dropper

https://www.zachboyle.com/wp-admin/EA470ZrTGNkuA/

Signatures

Process spawned unexpected child process 4 IoCs

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

Processes:

regsvr32.exeregsvr32.exeregsvr32.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	648	4704	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4812	4704	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4632	4704	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4600	4704	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4704 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4704 EXCEL.EXE
4704 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4704	EXCEL.EXE
4704	EXCEL.EXE
4704	EXCEL.EXE
4704	EXCEL.EXE
4704	EXCEL.EXE
4704	EXCEL.EXE
4704	EXCEL.EXE
4704	EXCEL.EXE
4704	EXCEL.EXE
4704	EXCEL.EXE
4704	EXCEL.EXE
4704	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4704 wrote to memory of 648	4704	EXCEL.EXE	regsvr32.exe
PID 4704 wrote to memory of 648	4704	EXCEL.EXE	regsvr32.exe
PID 4704 wrote to memory of 4812	4704	EXCEL.EXE	regsvr32.exe
PID 4704 wrote to memory of 4812	4704	EXCEL.EXE	regsvr32.exe
PID 4704 wrote to memory of 4632	4704	EXCEL.EXE	regsvr32.exe
PID 4704 wrote to memory of 4632	4704	EXCEL.EXE	regsvr32.exe
PID 4704 wrote to memory of 4600	4704	EXCEL.EXE	regsvr32.exe
PID 4704 wrote to memory of 4600	4704	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\b8ecdf8abced3289897d421af8aff8e460d1ceee871d59961ee56e9bb0543cc0.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4704

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:648

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:4812

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:4632

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4600

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/648-258-0x0000000000000000-mapping.dmp

Download
memory/4600-263-0x0000000000000000-mapping.dmp

Download
memory/4632-260-0x0000000000000000-mapping.dmp

Download
memory/4704-117-0x00007FFD41F90000-0x00007FFD41FA0000-memory.dmp

Filesize
64KB

Download
memory/4704-118-0x00007FFD41F90000-0x00007FFD41FA0000-memory.dmp

Filesize
64KB

Download
memory/4704-119-0x00007FFD41F90000-0x00007FFD41FA0000-memory.dmp

Filesize
64KB

Download
memory/4704-120-0x00007FFD41F90000-0x00007FFD41FA0000-memory.dmp

Filesize
64KB

Download
memory/4704-129-0x00007FFD3F440000-0x00007FFD3F450000-memory.dmp

Filesize
64KB

Download
memory/4704-130-0x00007FFD3F440000-0x00007FFD3F450000-memory.dmp

Filesize
64KB

Download
memory/4812-259-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads