c715f61426292bdc90d766f28031a3cba0cfaa1cfafed8f1672d8935b2eebf2c

General

Target

C715F61426292BDC90D766F28031A3CBA0CFAA1CFAFED8F1672D8935B2EEBF2C.xls
Size

217KB
MD5

af0a49df25d3c78502108108875ae23f
SHA1

65d7115e669c132e5b9ac104684e90027baf7ff0
SHA256

c715f61426292bdc90d766f28031a3cba0cfaa1cfafed8f1672d8935b2eebf2c
SHA512

a7fa52c976eb2745119d40f99eb34b690252a2e1225f938fee3297176922dbce40be7f15e09caaf327a1cab0ec3d8ee0c63cacba8eb67617078733cda8b5584f
SSDEEP

6144:OKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgByY+TAQXTHGUMEyP5p6f5jQm4:wbGUMVWlb4

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://ftp.agir-santeinternationale.com/doctors/KAacngW97n4ApzVBDdGy/

xlm40.dropper

http://www.vinyz.com/admin3693/BDFFgAZ6zBRumcUSG/

xlm40.dropper

http://ly.yjlianyi.top/wp-admin/NRAdJ/

xlm40.dropper

http://www.muyehuayi.com/cmp/Vtm2m7z88g/

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	3488	4920	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3080	4920	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	616	4920	regsvr32.exe	EXCEL.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3176	4920	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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

4920 EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4920	EXCEL.EXE
4920	EXCEL.EXE
4920	EXCEL.EXE
4920	EXCEL.EXE
4920	EXCEL.EXE
4920	EXCEL.EXE
4920	EXCEL.EXE
4920	EXCEL.EXE
4920	EXCEL.EXE
4920	EXCEL.EXE
4920	EXCEL.EXE
4920	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4920 wrote to memory of 3488	4920	EXCEL.EXE	regsvr32.exe
PID 4920 wrote to memory of 3488	4920	EXCEL.EXE	regsvr32.exe
PID 4920 wrote to memory of 3080	4920	EXCEL.EXE	regsvr32.exe
PID 4920 wrote to memory of 3080	4920	EXCEL.EXE	regsvr32.exe
PID 4920 wrote to memory of 616	4920	EXCEL.EXE	regsvr32.exe
PID 4920 wrote to memory of 616	4920	EXCEL.EXE	regsvr32.exe
PID 4920 wrote to memory of 3176	4920	EXCEL.EXE	regsvr32.exe
PID 4920 wrote to memory of 3176	4920	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\C715F61426292BDC90D766F28031A3CBA0CFAA1CFAFED8F1672D8935B2EEBF2C.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4920

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
2⤵
- Process spawned unexpected child process
PID:3488

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
2⤵
- Process spawned unexpected child process
PID:3080

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
2⤵
- Process spawned unexpected child process
PID:616

C:\Windows\System32\regsvr32.exe
C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
2⤵
- Process spawned unexpected child process
PID:3176

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/616-141-0x0000000000000000-mapping.dmp

Download
memory/3080-140-0x0000000000000000-mapping.dmp

Download
memory/3176-142-0x0000000000000000-mapping.dmp

Download
memory/3488-139-0x0000000000000000-mapping.dmp

Download
memory/4920-135-0x00007FFF03F50000-0x00007FFF03F60000-memory.dmp

Filesize
64KB

Download
memory/4920-137-0x00007FFF01C40000-0x00007FFF01C50000-memory.dmp

Filesize
64KB

Download
memory/4920-138-0x00007FFF01C40000-0x00007FFF01C50000-memory.dmp

Filesize
64KB

Download
memory/4920-136-0x00007FFF03F50000-0x00007FFF03F60000-memory.dmp

Filesize
64KB

Download
memory/4920-132-0x00007FFF03F50000-0x00007FFF03F60000-memory.dmp

Filesize
64KB

Download
memory/4920-134-0x00007FFF03F50000-0x00007FFF03F60000-memory.dmp

Filesize
64KB

Download
memory/4920-133-0x00007FFF03F50000-0x00007FFF03F60000-memory.dmp

Filesize
64KB

Download
memory/4920-144-0x00007FFF03F50000-0x00007FFF03F60000-memory.dmp

Filesize
64KB

Download
memory/4920-145-0x00007FFF03F50000-0x00007FFF03F60000-memory.dmp

Filesize
64KB

Download
memory/4920-146-0x00007FFF03F50000-0x00007FFF03F60000-memory.dmp

Filesize
64KB

Download
memory/4920-147-0x00007FFF03F50000-0x00007FFF03F60000-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