remcos | 273d85c547a8d6a03fb0026c1f557b82580ae234dc8d50d757ef6519dde5c6a0

General

Target

b4e2622fa5771f028819d3f648903668.exe
Size

917KB
MD5

b4e2622fa5771f028819d3f648903668
SHA1

25b337987aa1a89a6ca76b5286ad3c5b62231150
SHA256

273d85c547a8d6a03fb0026c1f557b82580ae234dc8d50d757ef6519dde5c6a0
SHA512

33be3e1bfe26f6bc3cc9365f7f6149b4bfb5b1e528a6d7444d6ba07a5a4224c5514293b7bc260fcc3a629aa43ec0a0ea4ca48444aab334019e4252fac952d1d0

Score

10^/10

remcos remotehost persistence rat

Malware Config

Extracted

Family

remcos

Version

3.2.0 Pro

Botnet

RemoteHost

C2

freelife.hopto.org:2404

freelife1.hopto.org:2404

freelife2.hopto.org:2404

freelife01.hopto.org:2404

freelife3.hopto.org:2404

freelife4.hopto.org:2404

freelife5.hopto.org:2404

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
pastananiceforwhat-QQD2AI
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

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:

b4e2622fa5771f028819d3f648903668.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2559286294-2439613352-4032193287-1000\Software\Microsoft\Windows\CurrentVersion\Run\Uhexymko = "C:\\Users\\Public\\Libraries\\okmyxehU.url"	b4e2622fa5771f028819d3f648903668.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

b4e2622fa5771f028819d3f648903668.exe

description	pid	process	target process
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe
PID 4528 wrote to memory of 4648	4528	b4e2622fa5771f028819d3f648903668.exe	secinit.exe

C:\Users\Admin\AppData\Local\Temp\b4e2622fa5771f028819d3f648903668.exe
"C:\Users\Admin\AppData\Local\Temp\b4e2622fa5771f028819d3f648903668.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4528

C:\Windows\SysWOW64\secinit.exe
C:\Windows\System32\secinit.exe
2⤵
PID:4648

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/4528-119-0x0000000000630000-0x000000000077A000-memory.dmp

Filesize
1.3MB

Download
memory/4648-120-0x0000000000000000-mapping.dmp

Download
memory/4648-122-0x00000000009D0000-0x00000000009D1000-memory.dmp

Filesize
4KB

Download
memory/4648-121-0x0000000000910000-0x0000000000911000-memory.dmp

Filesize
4KB

Download
memory/4648-124-0x0000000010590000-0x000000001060C000-memory.dmp

Filesize
496KB

Download
memory/4648-123-0x0000000000970000-0x0000000000971000-memory.dmp

Filesize
4KB

Download
memory/4648-125-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download

Analysis

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