remcos | ec84a8bda79a0fd968138e6eb7bed4da519a44b4f24f30eceae26606bf73d5f0

General

Target

Assigned Document.exe
Size

836KB
MD5

f8d1358d21f301908cd951fc887d606b
SHA1

88d68c3dd045ec5245da41feb6130d49b62491f4
SHA256

ec84a8bda79a0fd968138e6eb7bed4da519a44b4f24f30eceae26606bf73d5f0
SHA512

37311fb807024e3ac1dfd558bbcb2d8b4f9eb9f6bf729cf9f65d7d94593ef3b29705a948eb6ded388bed4e0757a6ffa47dfb2cafbf8d590bcd4acd3ae02e32c5

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

remcos009s.duckdns.org:1980

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:

Assigned Document.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Software\Microsoft\Windows\CurrentVersion\Run\Ugedr = "C:\\Users\\Admin\\rdegU.url"	Assigned Document.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

Assigned Document.exe

pid process

580 Assigned Document.exe
580 Assigned Document.exe

pid	process
580	Assigned Document.exe
580	Assigned Document.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Assigned Document.exe

description	pid	process	target process
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe
PID 580 wrote to memory of 1276	580	Assigned Document.exe	ieinstal.exe

C:\Users\Admin\AppData\Local\Temp\Assigned Document.exe
"C:\Users\Admin\AppData\Local\Temp\Assigned Document.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:580

C:\Program Files (x86)\internet explorer\ieinstal.exe
"C:\Program Files (x86)\internet explorer\ieinstal.exe"
2⤵
PID:1276

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/580-2-0x0000000000670000-0x0000000000671000-memory.dmp

Filesize
4KB

Download
memory/1276-3-0x0000000002D60000-0x0000000002D61000-memory.dmp

Filesize
4KB

Download
memory/1276-4-0x0000000000000000-mapping.dmp

Download
memory/1276-5-0x0000000003150000-0x0000000003151000-memory.dmp

Filesize
4KB

Download
memory/1276-7-0x0000000002DC0000-0x0000000002DC1000-memory.dmp

Filesize
4KB

Download
memory/1276-12-0x0000000010540000-0x0000000010564000-memory.dmp

Filesize
144KB

Download
memory/1276-13-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

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