45e8e29839193164d1246611825060f46fdedfd515a8cb52e8dbf1a2dbb54d1c

General

Target

45e8e29839193164d1246611825060f46fdedfd515a8cb52e8dbf1a2dbb54d1c.xls
Size

74KB
MD5

95cf4e0fa3165096aa664aa251e4d4bc
SHA1

a90284ee8bfb991ae3b24a43c55e10a3d258825c
SHA256

45e8e29839193164d1246611825060f46fdedfd515a8cb52e8dbf1a2dbb54d1c
SHA512

509b7ff79f030bd19ca1587c0a4f45c82b87b2c2ed80563607067d99f7955e7dd1ef667b427cd111036327dae7724a83b7bd796831d8f0c16fd539b9d66c0ffd
SSDEEP

1536:VTOKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgTKHuS4NcTO9/z7UYdEJBo:VaKpb8rGYrMPe3q7Q0XV5xtezEsi8/dw

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://bdtin.com/cache/4G8pl/

xlm40.dropper

http://bascoysonido.com.ar/cgi-bin/AmUUPhWK6oTKLzHpl7zm/

xlm40.dropper

http://basnetbd.com/ckfinder/K0a/

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	4320	1144	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3976	1144	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1680	1144	regsvr32.exe	82
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	3360	1144	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 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

pid	Process
1144	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1144	EXCEL.EXE
1144	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE
1144	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1144 wrote to memory of 4320	1144	EXCEL.EXE	87
PID 1144 wrote to memory of 4320	1144	EXCEL.EXE	87
PID 1144 wrote to memory of 3976	1144	EXCEL.EXE	91
PID 1144 wrote to memory of 3976	1144	EXCEL.EXE	91
PID 1144 wrote to memory of 1680	1144	EXCEL.EXE	95
PID 1144 wrote to memory of 1680	1144	EXCEL.EXE	95
PID 1144 wrote to memory of 3360	1144	EXCEL.EXE	96
PID 1144 wrote to memory of 3360	1144	EXCEL.EXE	96

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\45e8e29839193164d1246611825060f46fdedfd515a8cb52e8dbf1a2dbb54d1c.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:1144
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui1.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4320
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui2.ocx
  2⤵
  - Process spawned unexpected child process
  PID:3976
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui3.ocx
  2⤵
  - Process spawned unexpected child process
  PID:1680
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui4.ocx
  2⤵
  - Process spawned unexpected child process
  PID:3360

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
c2f24877494f8f9ad722cd072105be3f

SHA1
5f9746f18e65224cdc84abda10448861f8f9c12a

SHA256
bd5c00b9ba01a5556905091a54666d7aef5cc112f32e35e444054a49dd26b79a

SHA512
185e288fda52af9a06290890772271324ec3eee3d768fc8c1ccb5390d79f2c4316d8c0e0049e6596097189d430f6da1b7b5feb7874bb6593547536c0f91ee531

Download Submit
C:\Users\Admin\cui2.ocx

Filesize
1KB

MD5
1326c16a18441423830933fbb3a6a290

SHA1
d62b5f0ec9ae7a82209938c347311519b9fc1084

SHA256
3bb40456027c77d05b991e4686f10e51739a6ebdca3e33ec5edcd1e2c28b34cf

SHA512
2b9076d43ccc836c89bcd4cc1946008b1d0268edf432d37659960f4ffb9836ca65e638b61305f374ba71b2fa21ac3210482c0e6287288e75bcd44d4fbeb3e528

Download Submit
memory/1144-15-0x00007FF9650C0000-0x00007FF9650D0000-memory.dmp

Filesize
64KB

Download
memory/1144-14-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-0-0x00007FF9678B0000-0x00007FF9678C0000-memory.dmp

Filesize
64KB

Download
memory/1144-5-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-6-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-10-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-13-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-12-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-3-0x00007FF9A78CD000-0x00007FF9A78CE000-memory.dmp

Filesize
4KB

Download
memory/1144-1-0x00007FF9678B0000-0x00007FF9678C0000-memory.dmp

Filesize
64KB

Download
memory/1144-11-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-16-0x00007FF9650C0000-0x00007FF9650D0000-memory.dmp

Filesize
64KB

Download
memory/1144-9-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-8-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-7-0x00007FF9678B0000-0x00007FF9678C0000-memory.dmp

Filesize
64KB

Download
memory/1144-18-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-17-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-4-0x00007FF9678B0000-0x00007FF9678C0000-memory.dmp

Filesize
64KB

Download
memory/1144-41-0x00007FF9A7830000-0x00007FF9A7A25000-memory.dmp

Filesize
2.0MB

Download
memory/1144-2-0x00007FF9678B0000-0x00007FF9678C0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads