cc81b869a6ba77efc3a4af3a93ffa8f6bfb566250597cf66d47ed35872b772c5

General

Target

cc81b869a6ba77efc3a4af3a93ffa8f6bfb566250597cf66d47ed35872b772c5.xls
Size

95KB
MD5

c724247f3fb3f0a044600227d520eb1d
SHA1

0ab729d156ea1c3286f4cc2139382e5e6abcfe5e
SHA256

cc81b869a6ba77efc3a4af3a93ffa8f6bfb566250597cf66d47ed35872b772c5
SHA512

40404c08f17dce04cee57f7766bd7ce4c5281b8937251d292db1dc1a6084e7727989041766f1e46c590fdfdef98ba52c7ca96959afd4fad649c58743d64a772f

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	4504	3916	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4400	3916	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3228	3916	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4244	3916	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

3916 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

3916 EXCEL.EXE
3916 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE
3916	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3916 wrote to memory of 4504	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 4504	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 4400	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 4400	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 3228	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 3228	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 4244	3916	EXCEL.EXE	regsvr32.exe
PID 3916 wrote to memory of 4244	3916	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\cc81b869a6ba77efc3a4af3a93ffa8f6bfb566250597cf66d47ed35872b772c5.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:3916

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:4504

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:4400

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:3228

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:4244

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/3228-269-0x0000000000000000-mapping.dmp

Download
memory/3916-117-0x00007FFD648C0000-0x00007FFD648D0000-memory.dmp

Filesize
64KB

Download
memory/3916-118-0x00007FFD648C0000-0x00007FFD648D0000-memory.dmp

Filesize
64KB

Download
memory/3916-119-0x00007FFD648C0000-0x00007FFD648D0000-memory.dmp

Filesize
64KB

Download
memory/3916-120-0x00007FFD648C0000-0x00007FFD648D0000-memory.dmp

Filesize
64KB

Download
memory/3916-129-0x00007FFD618E0000-0x00007FFD618F0000-memory.dmp

Filesize
64KB

Download
memory/3916-130-0x00007FFD618E0000-0x00007FFD618F0000-memory.dmp

Filesize
64KB

Download
memory/4244-272-0x0000000000000000-mapping.dmp

Download
memory/4400-268-0x0000000000000000-mapping.dmp

Download
memory/4504-267-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads