664f0db47f4835308b2b7ad59130953cd2b2c7da1aecbedf4bad18b1f480323b

General

Target

664f0db47f4835308b2b7ad59130953cd2b2c7da1aecbedf4bad18b1f480323b.xls
Size

80KB
MD5

804a53940dbf5a13917c0752f466f435
SHA1

413f73d1dddf8d051b2bce50c57092f9c123476e
SHA256

664f0db47f4835308b2b7ad59130953cd2b2c7da1aecbedf4bad18b1f480323b
SHA512

400c2397918e1e4e9e5edf493852b448553202f27a24da0188fb736d2062bac299bed00bccc7b1b70ef101f96bd35539bc3ce36b0b9e7d1a4a76c2b2f882774c
SSDEEP

1536:ROOKpb8rGYrMPe3q7Q0XV5xtezEsi8/dgG7HuS4VcTO9/r7UYdEJe5:RBKpb8rGYrMPe3q7Q0XV5xtezEsi8/dk

Score

10^/10

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

http://centaurussits.com/assets/FL/

xlm40.dropper

http://cansal.cl/cgi-bin/besSIJTfOk0DtHZR/

xlm40.dropper

http://chalkie.me.uk/cgi-bin/gMLuebzG2RskkJXwY/

xlm40.dropper

http://www.cecambrils.cat/wp-content/0KwOSfNDESlzVMoc/

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	3924	780	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	2268	780	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	1224	780	regsvr32.exe	81
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4888	780	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
780	EXCEL.EXE

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
780	EXCEL.EXE
780	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE
780	EXCEL.EXE

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 780 wrote to memory of 3924	780	EXCEL.EXE	84
PID 780 wrote to memory of 3924	780	EXCEL.EXE	84
PID 780 wrote to memory of 2268	780	EXCEL.EXE	87
PID 780 wrote to memory of 2268	780	EXCEL.EXE	87
PID 780 wrote to memory of 1224	780	EXCEL.EXE	88
PID 780 wrote to memory of 1224	780	EXCEL.EXE	88
PID 780 wrote to memory of 4888	780	EXCEL.EXE	89
PID 780 wrote to memory of 4888	780	EXCEL.EXE	89

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\664f0db47f4835308b2b7ad59130953cd2b2c7da1aecbedf4bad18b1f480323b.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:780
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui1.ocx
  2⤵
  - Process spawned unexpected child process
  PID:3924
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui2.ocx
  2⤵
  - Process spawned unexpected child process
  PID:2268
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui3.ocx
  2⤵
  - Process spawned unexpected child process
  PID:1224
- C:\Windows\System32\regsvr32.exe
  C:\Windows\System32\regsvr32.exe /S ..\cui4.ocx
  2⤵
  - Process spawned unexpected child process
  PID:4888

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\cui2.ocx

Filesize
7KB

MD5
dcfafe69488bf47959fcff230e6d9ae6

SHA1
fff6e8a21e4e2f87799283297f62edd8bbe3b607

SHA256
9a6bbdef7220261d41de649a2008ead2ba3ceed25ddccdb6d46e9edcbb699e14

SHA512
7655391c265e349a7283bd94e76b2854b1f79f640bbee36c255408b1fb1923480f6efda052f1a34d32641a3bbd4786fef9da7c0a8ad7ecd1fcd4fa5c0db9aed4

Download Submit
memory/780-11-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download
memory/780-3-0x00007FF952CF0000-0x00007FF952D00000-memory.dmp

Filesize
64KB

Download
memory/780-2-0x00007FF952CF0000-0x00007FF952D00000-memory.dmp

Filesize
64KB

Download
memory/780-4-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download
memory/780-6-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download
memory/780-5-0x00007FF952CF0000-0x00007FF952D00000-memory.dmp

Filesize
64KB

Download
memory/780-7-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download
memory/780-8-0x00007FF952CF0000-0x00007FF952D00000-memory.dmp

Filesize
64KB

Download
memory/780-0-0x00007FF952CF0000-0x00007FF952D00000-memory.dmp

Filesize
64KB

Download
memory/780-9-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download
memory/780-13-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download
memory/780-12-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download
memory/780-10-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download
memory/780-14-0x00007FF950B50000-0x00007FF950B60000-memory.dmp

Filesize
64KB

Download
memory/780-15-0x00007FF950B50000-0x00007FF950B60000-memory.dmp

Filesize
64KB

Download
memory/780-1-0x00007FF992D0D000-0x00007FF992D0E000-memory.dmp

Filesize
4KB

Download
memory/780-30-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download
memory/780-31-0x00007FF992D0D000-0x00007FF992D0E000-memory.dmp

Filesize
4KB

Download
memory/780-32-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download
memory/780-33-0x00007FF992C70000-0x00007FF992E65000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads