a143d87f0842c73830ec5045ed73c4b0c50a8f1ded1d987b53e2d2c6c768aee6

General

Target

a143d87f0842c73830ec5045ed73c4b0c50a8f1ded1d987b53e2d2c6c768aee6.xls
Size

95KB
MD5

9188649c1cdfb1cd39d80b9980753675
SHA1

42a9d1e4dcb5b57c944b41874f30f9a38a6c24d4
SHA256

a143d87f0842c73830ec5045ed73c4b0c50a8f1ded1d987b53e2d2c6c768aee6
SHA512

812c486a73c8db8614f55e31ed5ad03f08baf336e42639646612bcad6c15b9c4360a51ee8300b7cb0a1c471caed5f06eb9845e60a73498501c7453375ab71f93

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	1360	2444	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2888	2444	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3704	2444	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3628	2444	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

2444 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE
2444	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 2444 wrote to memory of 1360	2444	EXCEL.EXE	regsvr32.exe
PID 2444 wrote to memory of 1360	2444	EXCEL.EXE	regsvr32.exe
PID 2444 wrote to memory of 2888	2444	EXCEL.EXE	regsvr32.exe
PID 2444 wrote to memory of 2888	2444	EXCEL.EXE	regsvr32.exe
PID 2444 wrote to memory of 3704	2444	EXCEL.EXE	regsvr32.exe
PID 2444 wrote to memory of 3704	2444	EXCEL.EXE	regsvr32.exe
PID 2444 wrote to memory of 3628	2444	EXCEL.EXE	regsvr32.exe
PID 2444 wrote to memory of 3628	2444	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\a143d87f0842c73830ec5045ed73c4b0c50a8f1ded1d987b53e2d2c6c768aee6.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2444

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:1360

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:2888

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:3704

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:3628

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/1360-249-0x0000000000000000-mapping.dmp

Download
memory/2444-118-0x00007FFC3FD00000-0x00007FFC3FD10000-memory.dmp

Filesize
64KB

Download
memory/2444-119-0x00007FFC3FD00000-0x00007FFC3FD10000-memory.dmp

Filesize
64KB

Download
memory/2444-120-0x00007FFC3FD00000-0x00007FFC3FD10000-memory.dmp

Filesize
64KB

Download
memory/2444-121-0x00007FFC3FD00000-0x00007FFC3FD10000-memory.dmp

Filesize
64KB

Download
memory/2444-130-0x00007FFC3C290000-0x00007FFC3C2A0000-memory.dmp

Filesize
64KB

Download
memory/2444-131-0x00007FFC3C290000-0x00007FFC3C2A0000-memory.dmp

Filesize
64KB

Download
memory/2888-257-0x0000000000000000-mapping.dmp

Download
memory/3628-261-0x0000000000000000-mapping.dmp

Download
memory/3704-258-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads