b679356c0ac24bb32bfadc7e254aaec13e6050e4fe6a80a32ed13f3e81cd4e11

General

Target

b679356c0ac24bb32bfadc7e254aaec13e6050e4fe6a80a32ed13f3e81cd4e11.xls
Size

95KB
MD5

fac8c5fafcf1ac037563bffd40118763
SHA1

abc4f2acd9369883a4f7d7fc7bf89994218fd7bd
SHA256

b679356c0ac24bb32bfadc7e254aaec13e6050e4fe6a80a32ed13f3e81cd4e11
SHA512

b2e9d5fd8eb7b780ccf9845bc7774190d4e93c0789733c97d851dd873df831a5936a3edc002c1f8b1309efde7cadba080042ffca4a7fb3a180fcdb1da68fd66d

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	2796	3900	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1364	3900	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	516	3900	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3812	3900	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

3900 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
3900	EXCEL.EXE
3900	EXCEL.EXE
3900	EXCEL.EXE
3900	EXCEL.EXE
3900	EXCEL.EXE
3900	EXCEL.EXE
3900	EXCEL.EXE
3900	EXCEL.EXE
3900	EXCEL.EXE
3900	EXCEL.EXE
3900	EXCEL.EXE
3900	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 3900 wrote to memory of 2796	3900	EXCEL.EXE	regsvr32.exe
PID 3900 wrote to memory of 2796	3900	EXCEL.EXE	regsvr32.exe
PID 3900 wrote to memory of 1364	3900	EXCEL.EXE	regsvr32.exe
PID 3900 wrote to memory of 1364	3900	EXCEL.EXE	regsvr32.exe
PID 3900 wrote to memory of 516	3900	EXCEL.EXE	regsvr32.exe
PID 3900 wrote to memory of 516	3900	EXCEL.EXE	regsvr32.exe
PID 3900 wrote to memory of 3812	3900	EXCEL.EXE	regsvr32.exe
PID 3900 wrote to memory of 3812	3900	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\b679356c0ac24bb32bfadc7e254aaec13e6050e4fe6a80a32ed13f3e81cd4e11.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3900

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci1.ocx
2⤵
- Process spawned unexpected child process
PID:2796

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci2.ocx
2⤵
- Process spawned unexpected child process
PID:1364

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci3.ocx
2⤵
- Process spawned unexpected child process
PID:516

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\soci4.ocx
2⤵
- Process spawned unexpected child process
PID:3812

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/516-260-0x0000000000000000-mapping.dmp

Download
memory/1364-259-0x0000000000000000-mapping.dmp

Download
memory/2796-258-0x0000000000000000-mapping.dmp

Download
memory/3812-263-0x0000000000000000-mapping.dmp

Download
memory/3900-118-0x00007FFB10F20000-0x00007FFB10F30000-memory.dmp

Filesize
64KB

Download
memory/3900-119-0x00007FFB10F20000-0x00007FFB10F30000-memory.dmp

Filesize
64KB

Download
memory/3900-120-0x00007FFB10F20000-0x00007FFB10F30000-memory.dmp

Filesize
64KB

Download
memory/3900-121-0x00007FFB10F20000-0x00007FFB10F30000-memory.dmp

Filesize
64KB

Download
memory/3900-130-0x00007FFB0D3B0000-0x00007FFB0D3C0000-memory.dmp

Filesize
64KB

Download
memory/3900-131-0x00007FFB0D3B0000-0x00007FFB0D3C0000-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