7e0b4b26bafd471703fac1db25b24936230aecad95732e66420184d717a111ee

Target

Invoice-5959498320211004.xlsb
Size

132KB
MD5

887bc475305003bdc34e671a2f3bd080
SHA1

7625f787be7479bf54addeff0ce7107cf0f59f23
SHA256

7e0b4b26bafd471703fac1db25b24936230aecad95732e66420184d717a111ee
SHA512

efb52e8c1fdf6e7cbc80b951220e25c78be0aad5c24b732696784b9b4d5d2c7a284df11fb0f524f64fa3f39a887069599c91f5233062d2aa8c01617104dd9ccd

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 3 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

wmic.exemshta.exerundll32.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	3504	2608	wmic.exe	EXCEL.EXE
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	3000	3392	mshta.exe
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1532	3392	rundll32.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

2608 EXCEL.EXE

Suspicious use of SetWindowsHookEx 14 IoCs

Processes:

EXCEL.EXE

pid	process
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.EXE
2608	EXCEL.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\Invoice-5959498320211004.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2608

C:\Windows\System32\Wbem\wmic.exe
wmic process call create 'mshta C:\ProgramData\vlEUL.rtf'
2⤵
- Process spawned unexpected child process
PID:3504

C:\Windows\system32\mshta.exe
mshta C:\ProgramData\vlEUL.rtf
1⤵
- Process spawned unexpected child process
PID:3000

C:\Windows\system32\mshta.exe
mshta C:\\ProgramData\penchs.rtf
2⤵
PID:3128

C:\Windows\System32\Wbem\wmic.exe
wmic process call create "rundll32.exe C:\\ProgramData\penchs.png HalGetVectorInput"
3⤵
PID:1032

C:\Windows\system32\rundll32.exe
rundll32.exe C:\\ProgramData\penchs.png HalGetVectorInput
1⤵
- Process spawned unexpected child process
PID:1532

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\ProgramData\penchs.png
MD5
6a791f933aa05441f8790180379f96ac

SHA1
b7f3f52b8fd3f7fc9c4dcb3d397349ed3c6271be

SHA256
d60d5aa3a2bc7f3f6fa222117cbe69c5b9b7fb802cd2d02d36c9680c7f6aa741

SHA512
bc25e5e873e576cca4f4d5e26e005cb8cf29047837e2f463b9461977cf888138742e61c47b4c0e72902a97523efa44399a08d91dc038516e7f3394dd092c90e8

Download Submit
C:\ProgramData\penchs.rtf
MD5
f38dabb35050a8d240d93ae2239300c5

SHA1
2c4d2d18460cd684ac74e94768341807f46fe05b

SHA256
fc4150684fe35650afaa37a47abd4ea3f3baf1faf022085b691314b72ded5063

SHA512
04554121fe823238607455b899429f3cfd5b981b3dfcae68df2534f061191a02bae1ae944eaf8536e2a70a6291ff4e8666d873dede1cf7789737eaf47aff0155

Download Submit
C:\ProgramData\vlEUL.rtf
MD5
031c5dfeaa97b80bff2c5fd7999352ac

SHA1
0e89ec2d13631c157f7e577b7617099bc5e45cd5

SHA256
6fbff6199b9a527c7a6c5ccec275a8ffda62f13b4ad29700075c2a8c217b11b6

SHA512
766d84ace8e3d0683ab534c2c45bbedbd731121f0bf330edef51ae787350b8a6c81b6d0e103832c185677cdf778bd5567c877ff5e90e3e7ec2ed298c1f11529c

Download Submit
memory/1032-297-0x0000000000000000-mapping.dmp

Download
memory/2608-175-0x000002BE9A280000-0x000002BE9A282000-memory.dmp

Filesize
8KB

Download
memory/2608-119-0x000002BE9A280000-0x000002BE9A282000-memory.dmp

Filesize
8KB

Download
memory/2608-121-0x000002BE9A280000-0x000002BE9A282000-memory.dmp

Filesize
8KB

Download
memory/2608-127-0x00007FFDFC560000-0x00007FFDFC570000-memory.dmp

Filesize
64KB

Download
memory/2608-115-0x00007FFDFC560000-0x00007FFDFC570000-memory.dmp

Filesize
64KB

Download
memory/2608-176-0x000002BE9A280000-0x000002BE9A282000-memory.dmp

Filesize
8KB

Download
memory/2608-120-0x000002BE9A280000-0x000002BE9A282000-memory.dmp

Filesize
8KB

Download
memory/2608-118-0x00007FFDFC560000-0x00007FFDFC570000-memory.dmp

Filesize
64KB

Download
memory/2608-117-0x00007FFDFC560000-0x00007FFDFC570000-memory.dmp

Filesize
64KB

Download
memory/2608-116-0x00007FFDFC560000-0x00007FFDFC570000-memory.dmp

Filesize
64KB

Download
memory/3128-291-0x0000000000000000-mapping.dmp

Download
memory/3504-268-0x0000000000000000-mapping.dmp

Download