849876b397f234404225ff66e4359e236742f698413fb595f33d1a7ec93387ff

General

Target

849876b397f234404225ff66e4359e236742f698413fb595f33d1a7ec93387ff.xls
Size

217KB
MD5

98089376f5fd2be85055fc9d7056c207
SHA1

dc9faca82761a41ff6e34c502824c45ac8c74b42
SHA256

849876b397f234404225ff66e4359e236742f698413fb595f33d1a7ec93387ff
SHA512

e31d0c109a253da0f35b3395fde382fd1488f6efa9393ba5f6cc45628b769f4f585e0a9d4cbea0deb318fd59acee5bb61f00fd1a58d22a9cf9b06ea72af5efe9
SSDEEP

6144:OKpb8rGYrMPe3q7Q0XV5xtuEsi8/dgByY+TAQXTHGUMEyP5p6f5jQmI:wbGUMVWlbI

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.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4736	4956	regsvr32.exe	66
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5040	4956	regsvr32.exe	66
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2632	4956	regsvr32.exe	66
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5088	4956	regsvr32.exe	66

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

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

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

pid	Process
4956	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4956	EXCEL.EXE
4956	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE
4956	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4956 wrote to memory of 4736	4956	EXCEL.EXE	69
PID 4956 wrote to memory of 4736	4956	EXCEL.EXE	69
PID 4956 wrote to memory of 5040	4956	EXCEL.EXE	70
PID 4956 wrote to memory of 5040	4956	EXCEL.EXE	70
PID 4956 wrote to memory of 2632	4956	EXCEL.EXE	71
PID 4956 wrote to memory of 2632	4956	EXCEL.EXE	71
PID 4956 wrote to memory of 5088	4956	EXCEL.EXE	72
PID 4956 wrote to memory of 5088	4956	EXCEL.EXE	72

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\849876b397f234404225ff66e4359e236742f698413fb595f33d1a7ec93387ff.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:4956
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv1.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:4736
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv2.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:5040
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv3.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:2632
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\oxnv4.ooccxx
  2⤵
  - Process spawned unexpected child process
  PID:5088

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/4956-119-0x00007FFBDF500000-0x00007FFBDF510000-memory.dmp

Filesize
64KB

Download
memory/4956-116-0x00007FFBDF500000-0x00007FFBDF510000-memory.dmp

Filesize
64KB

Download
memory/4956-128-0x00007FFBDC7E0000-0x00007FFBDC7F0000-memory.dmp

Filesize
64KB

Download
memory/4956-129-0x00007FFBDC7E0000-0x00007FFBDC7F0000-memory.dmp

Filesize
64KB

Download
memory/4956-118-0x00007FFBDF500000-0x00007FFBDF510000-memory.dmp

Filesize
64KB

Download
memory/4956-117-0x00007FFBDF500000-0x00007FFBDF510000-memory.dmp

Filesize
64KB

Download
memory/4956-308-0x00007FFBDF500000-0x00007FFBDF510000-memory.dmp

Filesize
64KB

Download
memory/4956-309-0x00007FFBDF500000-0x00007FFBDF510000-memory.dmp

Filesize
64KB

Download
memory/4956-310-0x00007FFBDF500000-0x00007FFBDF510000-memory.dmp

Filesize
64KB

Download
memory/4956-311-0x00007FFBDF500000-0x00007FFBDF510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads