remcos | 82d86565a1d25c4d51dd3c61b58594769bbdacc7e56baf2d5441f4f8dc36b225

Analysis

max time kernel
147s
max time network
151s
platform
windows10_x64
resource
win10v20201028
submitted
11-01-2021 18:37

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General

Target

New inquiry CON 20-10630.exe
Size

1.0MB
MD5

81b6d0ccb04d637c5d3531c5db05581e
SHA1

9d91a6242122b0777fa838a8317fc967fb306caa
SHA256

82d86565a1d25c4d51dd3c61b58594769bbdacc7e56baf2d5441f4f8dc36b225
SHA512

eee5f074947c43bdc57fe6a8a286aa5c9732af659babf0e35f3e3f29345b071a0648acb10460b10a0f6a1d4d7e0d8d4d2e9056ae2bef4ef1a7e127aa10ad8810

Score

10^/10

remcos persistence rat

Malware Config

Signatures

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

New inquiry CON 20-10630.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\nwmcK = "C:\\Users\\Admin\\nwmcK.url"	New inquiry CON 20-10630.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

Processes:

description	flow	ioc
HTTP User-Agent header	25	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	24	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

New inquiry CON 20-10630.exe

description	pid	process	target process
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe
PID 1924 wrote to memory of 3688	1924	New inquiry CON 20-10630.exe	ieinstal.exe

C:\Users\Admin\AppData\Local\Temp\New inquiry CON 20-10630.exe
"C:\Users\Admin\AppData\Local\Temp\New inquiry CON 20-10630.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1924

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe"
2⤵
PID:3688

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/3688-2-0x0000000000670000-0x0000000000671000-memory.dmp

Filesize
4KB

Download
memory/3688-3-0x0000000000000000-mapping.dmp

Download
memory/3688-4-0x0000000000730000-0x0000000000731000-memory.dmp

Filesize
4KB

Download
memory/3688-6-0x00000000006D0000-0x00000000006D1000-memory.dmp

Filesize
4KB

Download