remcos | ef842b61ba7b4de87f9c6ab12cdd68e23c97ee6100b3eabcde0078537af9feb8

Analysis

max time kernel
151s
max time network
151s
platform
windows10_x64
resource
win10v20201028
submitted
23/02/2021, 16:02

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General

Target
Attached FILE.exe
Size 1.0MB
Sample210223-dregd262v2
SHA256 ef842b61ba7b4de87f9c6ab12cdd68e23c97ee6100b3eabcde0078537af9feb8
MD5 c5c7bf9b9eb6f04d6f674dbca8cba182
SHA1 cc72a2194d43f226d8cd1cbfd79473a2647f7a95
SHA512 a9dc3f1960c3ea7b68dc1babc18d2b99a297665431d64ec34c87be5ffd89edb3c470b9d4eec4d2a9224aa1770214c42cee2f0d242b41d906a3bba9bd91538e91
MD5 SHA1 SHA512

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

rem1.camdvr.org:2404
rem16.hopto.org:2404
rem1666.hopto.org:2404
rem16.camdvr.org:2404
remmusic.freeddns.org:2404
sunwap1.ddns.net:2404

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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ulbnx = "C:\\Users\\Public\\Libraries\\xnblU.url"	Attached FILE.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4076	ieinstal.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79
PID 1052 wrote to memory of 4076	1052	Attached FILE.exe	79

C:\Users\Admin\AppData\Local\Temp\Attached FILE.exe
"C:\Users\Admin\AppData\Local\Temp\Attached FILE.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1052
- C:\Program Files (x86)\internet explorer\ieinstal.exe
  "C:\Program Files (x86)\internet explorer\ieinstal.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:4076

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1052-2-0x00000000006B0000-0x00000000006B1000-memory.dmp

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memory/1052-3-0x0000000002440000-0x000000000247A000-memory.dmp

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memory/4076-4-0x0000000002890000-0x0000000002891000-memory.dmp

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memory/4076-6-0x0000000002950000-0x0000000002951000-memory.dmp

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memory/4076-8-0x00000000028F0000-0x00000000028F1000-memory.dmp

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memory/4076-14-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/4076-13-0x0000000010540000-0x0000000010564000-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