f4b95043b3ed71b857aaa892ad2406a413f6f6fc4b96389c29f84f24414fc4ff

General

Target

f4b95043b3ed71b857aaa892ad2406a413f6f6fc4b96389c29f84f24414fc4ff.xls
Size

95KB
MD5

0ab24d0452668cd0826da9bd59f1b341
SHA1

c007be6ebb969ac7c5e5e6175cb50199651b2a67
SHA256

f4b95043b3ed71b857aaa892ad2406a413f6f6fc4b96389c29f84f24414fc4ff
SHA512

61e72eeb52b24cb30af0f86d28137a2d60d1b5d28352554cf02cd18bc662dab1878b4328d9c7a703cf12fa1128b7ae92894ec390adc4945fe840a67c20a91136

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	1876	348	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	860	348	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3988	348	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2904	348	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 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

348 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE
348	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 348 wrote to memory of 1876	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 1876	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 860	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 860	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 3988	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 3988	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 2904	348	EXCEL.EXE	regsvr32.exe
PID 348 wrote to memory of 2904	348	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\f4b95043b3ed71b857aaa892ad2406a413f6f6fc4b96389c29f84f24414fc4ff.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:348

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:1876

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:860

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:3988

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:2904

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/348-117-0x00007FFFA23A0000-0x00007FFFA23B0000-memory.dmp

Filesize
64KB

Download
memory/348-118-0x00007FFFA23A0000-0x00007FFFA23B0000-memory.dmp

Filesize
64KB

Download
memory/348-119-0x00007FFFA23A0000-0x00007FFFA23B0000-memory.dmp

Filesize
64KB

Download
memory/348-120-0x00007FFFA23A0000-0x00007FFFA23B0000-memory.dmp

Filesize
64KB

Download
memory/348-129-0x00007FFF9E920000-0x00007FFF9E930000-memory.dmp

Filesize
64KB

Download
memory/348-130-0x00007FFF9E920000-0x00007FFF9E930000-memory.dmp

Filesize
64KB

Download
memory/860-264-0x0000000000000000-mapping.dmp

Download
memory/1876-260-0x0000000000000000-mapping.dmp

Download
memory/2904-268-0x0000000000000000-mapping.dmp

Download
memory/3988-265-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads