remcos | a00a856f0d85fcb7f485777ae81a0b1c52974bb1cd2482ba5e987a7ce8207511

General

Target
BKLULYOT.EXE
Size 755KB
Sample211126-hhhkmaebf6
SHA256 a00a856f0d85fcb7f485777ae81a0b1c52974bb1cd2482ba5e987a7ce8207511
MD5 2cb79bcce5050528580bf880f47d9d61
SHA1 32e93d278b70caf5156e8bb1d7bfc8e29658fccc
SHA512 a32393ece3ac9e4ff24ae1d50bf81657c4d83772b96bcdcb9c9d6590e0570f2f2c3ebd15ff21cf76be482f292b80138b301159a3bc0d3a4c50e7e215cf0c5b94
MD5 SHA1 SHA512

Score

10^/10

remcos tls persistence rat

Malware Config

Extracted

Family

remcos

Version

3.3.0 Pro

Botnet

TLS

C2

latua.nsupdate.info:7722
goldie.nsupdate.info:7722
coke.nsupdate.info:7722
fanta.nsupdate.info:7722

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
myhdudhdmmderfff-0RK6ZO
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
wikipedia;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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run\Bklulyot = "C:\\Users\\Admin\\Contacts\\toylulkB.url"	BKLULYOT.EXE

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69
PID 4480 wrote to memory of 4636	4480	BKLULYOT.EXE	69

C:\Users\Admin\AppData\Local\Temp\BKLULYOT.EXE
"C:\Users\Admin\AppData\Local\Temp\BKLULYOT.EXE"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4480
- C:\Windows\SysWOW64\mobsync.exe
  C:\Windows\System32\mobsync.exe
  2⤵
  PID:4636

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

memory/4480-118-0x00000000006D1000-0x00000000006E5000-memory.dmp

Download

memory/4480-119-0x0000000000580000-0x00000000006CA000-memory.dmp

Download

memory/4636-122-0x0000000002F90000-0x0000000002F91000-memory.dmp

Download

memory/4636-121-0x0000000003250000-0x0000000003251000-memory.dmp

Download

memory/4636-124-0x0000000072600000-0x000000007267C000-memory.dmp

Download

memory/4636-123-0x0000000003210000-0x0000000003211000-memory.dmp

Download

memory/4636-125-0x0000000000400000-0x0000000000479000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads