remcos | 4cd823b02efc3aaf62baa4f4e9c252ae487d969c887fe2a72291ad2e69359cac

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7v20201028
submitted
15/01/2021, 13:55

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General

Target
RFQ TK011521.exe
Size 773KB
Sample210115-yrbbsvwhea
SHA256 4cd823b02efc3aaf62baa4f4e9c252ae487d969c887fe2a72291ad2e69359cac
MD5 1b82291a598a2e1a2b6c6db774ddb5ea
SHA1 a4fa0d9d5a3ec8041d84eb4ca541e3e49833bc8c
SHA512 6488bfca54881950ab06185e1aea997b6ed4a0c93e841dbe4e14e364b1f23d0deb68b5e4a71394fc63fe54c94a5792eae4d4d6a42a9adaf9f728f112e66cd470
MD5 SHA1 SHA512

Score

10^/10

remcos rat

Malware Config

Extracted

Family

remcos

jackpiaau.duckdns.org:4902
ihechi.ddns.net:4902

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1676 set thread context of 1512	1676	RFQ TK011521.exe	31

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1064	schtasks.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 1064	1676	RFQ TK011521.exe	29
PID 1676 wrote to memory of 1064	1676	RFQ TK011521.exe	29
PID 1676 wrote to memory of 1064	1676	RFQ TK011521.exe	29
PID 1676 wrote to memory of 1064	1676	RFQ TK011521.exe	29
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31
PID 1676 wrote to memory of 1512	1676	RFQ TK011521.exe	31

C:\Users\Admin\AppData\Local\Temp\RFQ TK011521.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ TK011521.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UhmWrAKbkBd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpC0DF.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1064
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  PID:1512

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Scripting

T1064

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Scripting

T1064

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1512-9-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/1512-11-0x0000000000400000-0x0000000000421000-memory.dmp

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memory/1676-2-0x0000000074110000-0x00000000747FE000-memory.dmp

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memory/1676-3-0x0000000000E60000-0x0000000000E61000-memory.dmp

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memory/1676-5-0x00000000008F0000-0x0000000000902000-memory.dmp

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memory/1676-6-0x0000000004B00000-0x0000000004B58000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads