remcos | b2a87b6ad43bda8ae0b7cb4a182abfd355da89ce3fc328eddd2ca3c0557b9999

Analysis

max time kernel
149s
max time network
148s
platform
windows10_x64
resource
win10v200430
submitted
26/06/2020, 09:07

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General

Target
PO#61-26062020.scr
Size 810KB
Sample200626-9pedfwlkr6
SHA256 b2a87b6ad43bda8ae0b7cb4a182abfd355da89ce3fc328eddd2ca3c0557b9999
MD5 914b3e386c9c56b95bdfa054a3bbfc63
SHA1 e7441ec459b0069de08b71ff16edead739755cf0
SHA512 ca4d0cc33424160a01c1af640e322692197fa2f2fb9fe15b371223fea21d240780e5ed4f33bb3bacc5a7999bc6e096cd9c8157d00a8b83e76205226d07006f62
MD5 SHA1 SHA512

Score

10^/10

persistence rat remcos

Malware Config

Extracted

Family

remcos

206.123.129.103:4565

Signatures

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1516 set thread context of 8	1516	PO#61-26062020.scr	71

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
8	ieinstal.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
8	ieinstal.exe

Adds Run entry to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1231583446-2617009595-2137880041-1000\Software\Microsoft\Windows\CurrentVersion\Run\Wyak = "C:\\Users\\Admin\\AppData\\Local\\Wyak\\Wyak.hta"	PO#61-26062020.scr

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1516 wrote to memory of 8	1516	PO#61-26062020.scr	71
PID 1516 wrote to memory of 8	1516	PO#61-26062020.scr	71
PID 1516 wrote to memory of 8	1516	PO#61-26062020.scr	71
PID 1516 wrote to memory of 8	1516	PO#61-26062020.scr	71
PID 1516 wrote to memory of 8	1516	PO#61-26062020.scr	71

C:\Users\Admin\AppData\Local\Temp\PO#61-26062020.scr
"C:\Users\Admin\AppData\Local\Temp\PO#61-26062020.scr" /S
1⤵
- Suspicious use of SetThreadContext
- Adds Run entry to start application
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Program Files (x86)\internet explorer\ieinstal.exe
  "C:\Program Files (x86)\internet explorer\ieinstal.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Suspicious behavior: GetForegroundWindowSpam
  PID:8

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

memory/8-0-0x0000000000400000-0x0000000000420000-memory.dmp

Download

memory/8-2-0x0000000000400000-0x0000000000420000-memory.dmp