remcos | d94560cd6d50d7d21e77bc064c508f5569329d6c2a074859ba3b1ea2f64142ec

Analysis

max time kernel
149s
max time network
150s
platform
windows10_x64
resource
win10v20201028
submitted
05/03/2021, 13:20

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General

Target
Doc_ASOC21010304112665477909654_pdf.scr
Size 820KB
Sample210305-5e7kyex32e
SHA256 d94560cd6d50d7d21e77bc064c508f5569329d6c2a074859ba3b1ea2f64142ec
MD5 5131d3d07009df1ee01de43e3112f05a
SHA1 581ef0e712bee9f3326d3ad054ada409a283b9ed
SHA512 969ff10dba5bde0e9a750753956b8feb1a00c30b97f32b6a33dad754fe129a90fa2223f5f57a0ac229a116c23e172bbf0f353d58469a3bd9d4c898597beeb28a
MD5 SHA1 SHA512

Score

10^/10

remcos rat

Malware Config

Extracted

Family

remcos

xchilogs.duckdns.org:62532
xxxxza.dynamic-dns.net:23409

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Loads dropped DLL 1 IoCs

pid	Process
648	Doc_ASOC21010304112665477909654_pdf.scr

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 648 set thread context of 2512	648	Doc_ASOC21010304112665477909654_pdf.scr	77

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
648	Doc_ASOC21010304112665477909654_pdf.scr
648	Doc_ASOC21010304112665477909654_pdf.scr
648	Doc_ASOC21010304112665477909654_pdf.scr
648	Doc_ASOC21010304112665477909654_pdf.scr
648	Doc_ASOC21010304112665477909654_pdf.scr
648	Doc_ASOC21010304112665477909654_pdf.scr
648	Doc_ASOC21010304112665477909654_pdf.scr
648	Doc_ASOC21010304112665477909654_pdf.scr

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
648	Doc_ASOC21010304112665477909654_pdf.scr

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2512	Doc_ASOC21010304112665477909654_pdf.scr

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 648 wrote to memory of 2512	648	Doc_ASOC21010304112665477909654_pdf.scr	77
PID 648 wrote to memory of 2512	648	Doc_ASOC21010304112665477909654_pdf.scr	77
PID 648 wrote to memory of 2512	648	Doc_ASOC21010304112665477909654_pdf.scr	77
PID 648 wrote to memory of 2512	648	Doc_ASOC21010304112665477909654_pdf.scr	77

C:\Users\Admin\AppData\Local\Temp\Doc_ASOC21010304112665477909654_pdf.scr
"C:\Users\Admin\AppData\Local\Temp\Doc_ASOC21010304112665477909654_pdf.scr" /S
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:648
- C:\Users\Admin\AppData\Local\Temp\Doc_ASOC21010304112665477909654_pdf.scr
  "C:\Users\Admin\AppData\Local\Temp\Doc_ASOC21010304112665477909654_pdf.scr" /S
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2512

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2512-4-0x0000000000400000-0x0000000000478000-memory.dmp

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