90fde9ca83ac86a83f715e4f669a343ec0d4f2b10afe3d0c311a23646d483e10

General

Target

90fde9ca83ac86a83f715e4f669a343ec0d4f2b10afe3d0c311a23646d483e10.xls
Size

70KB
MD5

daf8bdfc3904cb064f5cab8f1ffd223d
SHA1

ae4155d6d34dd126647ed6735b223b15ccf1c277
SHA256

90fde9ca83ac86a83f715e4f669a343ec0d4f2b10afe3d0c311a23646d483e10
SHA512

f9cf93eeeb78189aae50b614793b9841f7d27ee10beadda20be9837a4ad26947e5499f87580ba57879a478bd661e3f5280623dc4d0cbc16290f9030ed130a05c
SSDEEP

1536:OhKpb8rGYrMPe3q7Q0XV5xtezE8vG8UM+e+hDcnTLiQrRTZws8Egk:uKpb8rGYrMPe3q7Q0XV5xtezE8vG8UMx

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://strachanclark.com/images/3gc4qCpSFYbBMDEC/

xlm40.dropper

https://synapse-archive.com/images/bKaMr/

xlm40.dropper

https://sumuvesa.com/wp-includes/rgL/

Signatures

Process spawned unexpected child process 3 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	3740	3736	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	5016	3736	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1120	3736	regsvr32.exe	82

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
3736	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3736	EXCEL.EXE
3736	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE
3736	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3736 wrote to memory of 3740	3736	EXCEL.EXE	87
PID 3736 wrote to memory of 3740	3736	EXCEL.EXE	87
PID 3736 wrote to memory of 5016	3736	EXCEL.EXE	90
PID 3736 wrote to memory of 5016	3736	EXCEL.EXE	90
PID 3736 wrote to memory of 1120	3736	EXCEL.EXE	93
PID 3736 wrote to memory of 1120	3736	EXCEL.EXE	93

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\90fde9ca83ac86a83f715e4f669a343ec0d4f2b10afe3d0c311a23646d483e10.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:3736
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cusoa1.ocx
  2⤵
  - Process spawned unexpected child process
  PID:3740
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cusoa2.ocx
  2⤵
  - Process spawned unexpected child process
  PID:5016
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cusoa3.ocx
  2⤵
  - Process spawned unexpected child process
  PID:1120

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms

Filesize
1KB

MD5
7c230fc76df1e88179a0101e217ef077

SHA1
60ebe9e76e8d5e1cea00924ae9e12c393f4072bd

SHA256
8183a310d83c66237a9edcffed04394ac1b6c71813983a35d4d99823fc8a573d

SHA512
39ab2a41961c0bb9e468257a37cc709ebe2e7132b9afab355df62645657ce667b88df8b22e6c3c54f6632493918ac8ebe2955ddeb28de36569b3fca1b7240490

Download Submit
memory/3736-11-0x00007FF8BB7C0000-0x00007FF8BB7D0000-memory.dmp

Filesize
64KB

Download
memory/3736-5-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-6-0x00007FF8BDBF0000-0x00007FF8BDC00000-memory.dmp

Filesize
64KB

Download
memory/3736-13-0x00007FF8BB7C0000-0x00007FF8BB7D0000-memory.dmp

Filesize
64KB

Download
memory/3736-12-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-8-0x00007FF8BDBF0000-0x00007FF8BDC00000-memory.dmp

Filesize
64KB

Download
memory/3736-10-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-9-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-7-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-0-0x00007FF8BDBF0000-0x00007FF8BDC00000-memory.dmp

Filesize
64KB

Download
memory/3736-2-0x00007FF8BDBF0000-0x00007FF8BDC00000-memory.dmp

Filesize
64KB

Download
memory/3736-3-0x00007FF8BDBF0000-0x00007FF8BDC00000-memory.dmp

Filesize
64KB

Download
memory/3736-4-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-14-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-15-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-17-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-16-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-45-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-46-0x00007FF8FDC0D000-0x00007FF8FDC0E000-memory.dmp

Filesize
4KB

Download
memory/3736-47-0x00007FF8FDB70000-0x00007FF8FDD65000-memory.dmp

Filesize
2.0MB

Download
memory/3736-1-0x00007FF8FDC0D000-0x00007FF8FDC0E000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads