4131d15f8e7dc09f1f315f97c329b0f3681b649749d34fbb44e89689f90d52c7

General

Target

4131d15f8e7dc09f1f315f97c329b0f3681b649749d34fbb44e89689f90d52c7.xls
Size

95KB
MD5

3e28d91a3c9de09be57ab2f27342f5bf
SHA1

87ec505290578fb438df03a9d24b5c06adf1617b
SHA256

4131d15f8e7dc09f1f315f97c329b0f3681b649749d34fbb44e89689f90d52c7
SHA512

edcc96d56d47f03b2be41dee1c01e9168bb770a0b845ae3dc95e9c98c34e016852cf10d4c8fa6ee23a59d97d7e0239011cde4630bf2f4d3f539aff69b80b52f5

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	2640	4088	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3212	4088	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	700	4088	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3536	4088	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

4088 EXCEL.EXE
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

EXCEL.EXE

pid process

4088 EXCEL.EXE
4088 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4088	EXCEL.EXE
4088	EXCEL.EXE
4088	EXCEL.EXE
4088	EXCEL.EXE
4088	EXCEL.EXE
4088	EXCEL.EXE
4088	EXCEL.EXE
4088	EXCEL.EXE
4088	EXCEL.EXE
4088	EXCEL.EXE
4088	EXCEL.EXE
4088	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4088 wrote to memory of 2640	4088	EXCEL.EXE	regsvr32.exe
PID 4088 wrote to memory of 2640	4088	EXCEL.EXE	regsvr32.exe
PID 4088 wrote to memory of 3212	4088	EXCEL.EXE	regsvr32.exe
PID 4088 wrote to memory of 3212	4088	EXCEL.EXE	regsvr32.exe
PID 4088 wrote to memory of 700	4088	EXCEL.EXE	regsvr32.exe
PID 4088 wrote to memory of 700	4088	EXCEL.EXE	regsvr32.exe
PID 4088 wrote to memory of 3536	4088	EXCEL.EXE	regsvr32.exe
PID 4088 wrote to memory of 3536	4088	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\4131d15f8e7dc09f1f315f97c329b0f3681b649749d34fbb44e89689f90d52c7.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:4088

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:2640

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:3212

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:700

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:3536

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/700-268-0x0000000000000000-mapping.dmp

Download
memory/2640-266-0x0000000000000000-mapping.dmp

Download
memory/3212-267-0x0000000000000000-mapping.dmp

Download
memory/3536-271-0x0000000000000000-mapping.dmp

Download
memory/4088-128-0x00007FFC41EE0000-0x00007FFC41EF0000-memory.dmp

Filesize
64KB

Download
memory/4088-129-0x00007FFC41EE0000-0x00007FFC41EF0000-memory.dmp

Filesize
64KB

Download
memory/4088-119-0x00007FFC45850000-0x00007FFC45860000-memory.dmp

Filesize
64KB

Download
memory/4088-118-0x00007FFC45850000-0x00007FFC45860000-memory.dmp

Filesize
64KB

Download
memory/4088-117-0x00007FFC45850000-0x00007FFC45860000-memory.dmp

Filesize
64KB

Download
memory/4088-116-0x00007FFC45850000-0x00007FFC45860000-memory.dmp

Filesize
64KB

Download
memory/4088-308-0x00007FFC45850000-0x00007FFC45860000-memory.dmp

Filesize
64KB

Download
memory/4088-309-0x00007FFC45850000-0x00007FFC45860000-memory.dmp

Filesize
64KB

Download
memory/4088-310-0x00007FFC45850000-0x00007FFC45860000-memory.dmp

Filesize
64KB

Download
memory/4088-311-0x00007FFC45850000-0x00007FFC45860000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads