13b563633a962e3b3bca3e78cad6d17fdbfda0fb5c7f2967261c3aeee79c36be

General

Target

13b563633a962e3b3bca3e78cad6d17fdbfda0fb5c7f2967261c3aeee79c36be.xls
Size

70KB
MD5

89aa4e927e1273ca9b1e9bce640a0a9f
SHA1

3a7988e5821533014dafb61ff6f80ecff5d53f58
SHA256

13b563633a962e3b3bca3e78cad6d17fdbfda0fb5c7f2967261c3aeee79c36be
SHA512

fb77c6e8290e9734d62ea7a14de0ae111c19343d3709d1b895ed00be0d6526ca0984258322fd667df5f7c1a4c73804f29d54e8de529d47f96df3f14e7f9f9a99
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	4680	3240	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4000	3240	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2608	3240	regsvr32.exe	81

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
3240	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3240	EXCEL.EXE
3240	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
3240	EXCEL.EXE
3240	EXCEL.EXE
3240	EXCEL.EXE
3240	EXCEL.EXE
3240	EXCEL.EXE
3240	EXCEL.EXE
3240	EXCEL.EXE
3240	EXCEL.EXE
3240	EXCEL.EXE
3240	EXCEL.EXE
3240	EXCEL.EXE
3240	EXCEL.EXE

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 4680	3240	EXCEL.EXE	85
PID 3240 wrote to memory of 4680	3240	EXCEL.EXE	85
PID 3240 wrote to memory of 4000	3240	EXCEL.EXE	89
PID 3240 wrote to memory of 4000	3240	EXCEL.EXE	89
PID 3240 wrote to memory of 2608	3240	EXCEL.EXE	91
PID 3240 wrote to memory of 2608	3240	EXCEL.EXE	91

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\13b563633a962e3b3bca3e78cad6d17fdbfda0fb5c7f2967261c3aeee79c36be.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:3240
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cusoa1.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4680
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cusoa2.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4000
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cusoa3.ocx
  2⤵
  - Process spawned unexpected child process
  PID:2608

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
3KB

MD5
86dc140d8b07ee207d8864cc2a962355

SHA1
9e559600303e3d904c4636436d762eacd9a6fd14

SHA256
b5d026fc3ee286d2f33eb45fdf6cbe690677b2e06cd29b52bc6d991514ac24ee

SHA512
c7781552157ebb21dbd9a7f73fac9b842fba338c8e44d3ed0e5866f3fd2a01e9e3d246c54279683265b33c564d1ccd9dc676f2f67fb1ce7d80d4ff5a96192a70

Download Submit
memory/3240-12-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-8-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-2-0x00007FFB17E30000-0x00007FFB17E40000-memory.dmp

Filesize
64KB

Download
memory/3240-4-0x00007FFB17E30000-0x00007FFB17E40000-memory.dmp

Filesize
64KB

Download
memory/3240-6-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-5-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-9-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-13-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-0-0x00007FFB17E30000-0x00007FFB17E40000-memory.dmp

Filesize
64KB

Download
memory/3240-11-0x00007FFB15DD0000-0x00007FFB15DE0000-memory.dmp

Filesize
64KB

Download
memory/3240-3-0x00007FFB17E30000-0x00007FFB17E40000-memory.dmp

Filesize
64KB

Download
memory/3240-7-0x00007FFB17E30000-0x00007FFB17E40000-memory.dmp

Filesize
64KB

Download
memory/3240-10-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-17-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-19-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-18-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-16-0x00007FFB15DD0000-0x00007FFB15DE0000-memory.dmp

Filesize
64KB

Download
memory/3240-15-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-14-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-47-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-48-0x00007FFB57E4D000-0x00007FFB57E4E000-memory.dmp

Filesize
4KB

Download
memory/3240-49-0x00007FFB57DB0000-0x00007FFB57FA5000-memory.dmp

Filesize
2.0MB

Download
memory/3240-1-0x00007FFB57E4D000-0x00007FFB57E4E000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads