a1d6c1829b28235c056139f8d03a6101c6fb1f87cd0ec20d1efdc51861559017

General

Target

a1d6c1829b28235c056139f8d03a6101c6fb1f87cd0ec20d1efdc51861559017.xlsm
Size

73KB
MD5

ea6d9e9fd72fdadb35082ddb0ea22da7
SHA1

60fc0032ed500c2a655469ffb4aa90a35de4b023
SHA256

a1d6c1829b28235c056139f8d03a6101c6fb1f87cd0ec20d1efdc51861559017
SHA512

7c8329202c8211d87e544427ad00ba09be7ff5a6023e3265243c9bc0005bf54ebc66c80c52aab2a21db3c2f570405572cfaf08fbf2da3e3dcbb15a31f4b0ffef
SSDEEP

1536:EheXF/Sto0NSVUINwtzLT7OMuuAe0yOcfpXZGsMbV6Jr:EhUItzSmICpH7OZuvZGsMwr

Score

10^/10

discovery

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://onlytesting.uknowva.com/cgi-bin/ykwkwDElL7GqV/

xlm40.dropper

http://alexandreinacio.com/erros/7KuhQtHTu/

xlm40.dropper

http://dalmiavihar.com/Fox-C404/dogTQp57ShXI1SqA/

Signatures

Process spawned unexpected child process 1 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	2328	4280	regsvr32.exe	82

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regsvr32.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

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
4280	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4280	EXCEL.EXE
4280	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4280	EXCEL.EXE
4280	EXCEL.EXE
4280	EXCEL.EXE
4280	EXCEL.EXE
4280	EXCEL.EXE
4280	EXCEL.EXE
4280	EXCEL.EXE
4280	EXCEL.EXE
4280	EXCEL.EXE
4280	EXCEL.EXE
4280	EXCEL.EXE
4280	EXCEL.EXE

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4280 wrote to memory of 2328	4280	EXCEL.EXE	90
PID 4280 wrote to memory of 2328	4280	EXCEL.EXE	90
PID 4280 wrote to memory of 2328	4280	EXCEL.EXE	90

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\a1d6c1829b28235c056139f8d03a6101c6fb1f87cd0ec20d1efdc51861559017.xlsm"
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:4280
- C:\Windows\SysWow64\regsvr32.exe
  C:\Windows\SysWow64\regsvr32.exe -s ..\fbd.dll
  2⤵
  - Process spawned unexpected child process
  - System Location Discovery: System Language Discovery
  PID:2328

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

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
9cc643d1475a3c4cabdd4949ac97ad7e

SHA1
6b24265d4a4462a51a1d9d8e611a7a24c5c1ec4e

SHA256
279db7a0246247f247f97e6350f67a6a6299e4ee409c185878413d8172d04705

SHA512
5ef6f9bdf51affef0167afa285ba63e10a3cee8432d4d7333daad8c4c878d24b35c4e1ac04154648bff5c7a089825d30c388e4c23e85a6bafb1d9bf5acfcae36

Download Submit
C:\Users\Admin\fbd.dll

Filesize
1KB

MD5
1326c16a18441423830933fbb3a6a290

SHA1
d62b5f0ec9ae7a82209938c347311519b9fc1084

SHA256
3bb40456027c77d05b991e4686f10e51739a6ebdca3e33ec5edcd1e2c28b34cf

SHA512
2b9076d43ccc836c89bcd4cc1946008b1d0268edf432d37659960f4ffb9836ca65e638b61305f374ba71b2fa21ac3210482c0e6287288e75bcd44d4fbeb3e528

Download Submit
memory/4280-7-0x00007FF81CA50000-0x00007FF81CC45000-memory.dmp

Filesize
2.0MB

Download
memory/4280-11-0x00007FF7DA9E0000-0x00007FF7DA9F0000-memory.dmp

Filesize
64KB

Download
memory/4280-4-0x00007FF7DCAD0000-0x00007FF7DCAE0000-memory.dmp

Filesize
64KB

Download
memory/4280-5-0x00007FF7DCAD0000-0x00007FF7DCAE0000-memory.dmp

Filesize
64KB

Download
memory/4280-9-0x00007FF81CA50000-0x00007FF81CC45000-memory.dmp

Filesize
2.0MB

Download
memory/4280-8-0x00007FF81CA50000-0x00007FF81CC45000-memory.dmp

Filesize
2.0MB

Download
memory/4280-0-0x00007FF7DCAD0000-0x00007FF7DCAE0000-memory.dmp

Filesize
64KB

Download
memory/4280-6-0x00007FF81CA50000-0x00007FF81CC45000-memory.dmp

Filesize
2.0MB

Download
memory/4280-10-0x00007FF81CA50000-0x00007FF81CC45000-memory.dmp

Filesize
2.0MB

Download
memory/4280-2-0x00007FF7DCAD0000-0x00007FF7DCAE0000-memory.dmp

Filesize
64KB

Download
memory/4280-12-0x00007FF7DA9E0000-0x00007FF7DA9F0000-memory.dmp

Filesize
64KB

Download
memory/4280-3-0x00007FF7DCAD0000-0x00007FF7DCAE0000-memory.dmp

Filesize
64KB

Download
memory/4280-38-0x00007FF81CA50000-0x00007FF81CC45000-memory.dmp

Filesize
2.0MB

Download
memory/4280-40-0x00007FF81CA50000-0x00007FF81CC45000-memory.dmp

Filesize
2.0MB

Download
memory/4280-39-0x00007FF81CAED000-0x00007FF81CAEE000-memory.dmp

Filesize
4KB

Download
memory/4280-41-0x00007FF81CA50000-0x00007FF81CC45000-memory.dmp

Filesize
2.0MB

Download
memory/4280-1-0x00007FF81CAED000-0x00007FF81CAEE000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads