remcos | 79e70809a85e291f9da3d391131208ce7645dd512eb6bb71811154b43da23222

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7v20201028
submitted
17/02/2021, 23:12

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General

Target
Quote.exe
Size 233KB
Sample210217-tzlm4actmn
SHA256 79e70809a85e291f9da3d391131208ce7645dd512eb6bb71811154b43da23222
MD5 a96067cac28b1f5c3de4e1b6c7d0a402
SHA1 51c65c8ece4bfd5c7d1b09105440f3f02d3b14ca
SHA512 1627058a9a884965bce4ece1ccf03c24a849cd79fe883c923ae2eb56c8e0bbb730cf823e550c080685af1f906a38f2847a65dc8ed236181d97eee9ddcfc3f96e
MD5 SHA1 SHA512

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

103.89.88.238:4299

Signatures

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

Loads dropped DLL 2 IoCs

pid	Process
1096	Quote.exe
1096	Quote.exe

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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz = "C:\\Users\\Admin\\AppData\\Roaming\\abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstu"	Quote.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1096 set thread context of 1040	1096	Quote.exe	26

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 4 IoCs

pid	Process
1096	Quote.exe
1096	Quote.exe
1096	Quote.exe
1096	Quote.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1096	Quote.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1040	Quote.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 1040	1096	Quote.exe	26
PID 1096 wrote to memory of 1040	1096	Quote.exe	26
PID 1096 wrote to memory of 1040	1096	Quote.exe	26
PID 1096 wrote to memory of 1040	1096	Quote.exe	26
PID 1096 wrote to memory of 1040	1096	Quote.exe	26

C:\Users\Admin\AppData\Local\Temp\Quote.exe
"C:\Users\Admin\AppData\Local\Temp\Quote.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1096
- C:\Users\Admin\AppData\Local\Temp\Quote.exe
  "C:\Users\Admin\AppData\Local\Temp\Quote.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:1040

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1040-7-0x0000000000400000-0x0000000000421000-memory.dmp

Download

memory/1096-2-0x00000000761F1000-0x00000000761F3000-memory.dmp

Download