remcos | 322279079e3d4bea41a88f786f51fdcd67ede21d36818ffda7d5a389a5a9d238

General

Target

0122a6e44db3445247a4d9801791289a.exe
Size

94KB
MD5

0122a6e44db3445247a4d9801791289a
SHA1

fb36fbf97d96a2695b02cfed7a593ecae9a4f89b
SHA256

322279079e3d4bea41a88f786f51fdcd67ede21d36818ffda7d5a389a5a9d238
SHA512

fd49f3626dcbce42e74a739dc227e4327a3ae63a058f2f7533b9c94bbd3a038026fd6fa6c4f76133aa1a87f8be24a437369a3b58dd69d7eb0fac61706004401c
SSDEEP

768:h5PHyCjmhFdWfLubuZ1kvIaEekM2rjw2r1TZ:h5PHfjGPAKbLVX2r

Score

10^/10

remcos host persistence rat upx

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

lucidair.ddns.net:8080

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
system64.exe
copy_folder
system64
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
keys
keylog_path
%AppData%
mouse_option
false
mutex
remcos_hsnmjifvmg
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screens
screenshot_path
%AppData%
screenshot_time
1
startup_value
system64
take_screenshot_option
false
take_screenshot_time
5

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1424	system64.exe

Loads dropped DLL 2 IoCs

pid	Process
1624	cmd.exe
1624	cmd.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2304-0-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral1/memory/2304-10-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral1/files/0x000b000000014ef8-12.dat	upx
behavioral1/memory/1424-17-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral1/memory/1424-19-0x0000000000400000-0x000000000042C000-memory.dmp	upx
behavioral1/memory/2156-18-0x0000000000400000-0x000000000042C000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\system64 = "\"C:\\Users\\Admin\\AppData\\Roaming\\system64\\system64.exe\""	0122a6e44db3445247a4d9801791289a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\system64 = "\"C:\\Users\\Admin\\AppData\\Roaming\\system64\\system64.exe\""	system64.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1424 set thread context of 2156	1424	system64.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
3008	PING.EXE

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 1624	2304	0122a6e44db3445247a4d9801791289a.exe	28
PID 2304 wrote to memory of 1624	2304	0122a6e44db3445247a4d9801791289a.exe	28
PID 2304 wrote to memory of 1624	2304	0122a6e44db3445247a4d9801791289a.exe	28
PID 2304 wrote to memory of 1624	2304	0122a6e44db3445247a4d9801791289a.exe	28
PID 2304 wrote to memory of 1624	2304	0122a6e44db3445247a4d9801791289a.exe	28
PID 2304 wrote to memory of 1624	2304	0122a6e44db3445247a4d9801791289a.exe	28
PID 2304 wrote to memory of 1624	2304	0122a6e44db3445247a4d9801791289a.exe	28
PID 1624 wrote to memory of 3008	1624	cmd.exe	30
PID 1624 wrote to memory of 3008	1624	cmd.exe	30
PID 1624 wrote to memory of 3008	1624	cmd.exe	30
PID 1624 wrote to memory of 3008	1624	cmd.exe	30
PID 1624 wrote to memory of 1424	1624	cmd.exe	31
PID 1624 wrote to memory of 1424	1624	cmd.exe	31
PID 1624 wrote to memory of 1424	1624	cmd.exe	31
PID 1624 wrote to memory of 1424	1624	cmd.exe	31
PID 1424 wrote to memory of 2156	1424	system64.exe	32
PID 1424 wrote to memory of 2156	1424	system64.exe	32
PID 1424 wrote to memory of 2156	1424	system64.exe	32
PID 1424 wrote to memory of 2156	1424	system64.exe	32
PID 1424 wrote to memory of 2156	1424	system64.exe	32
PID 1424 wrote to memory of 2156	1424	system64.exe	32
PID 1424 wrote to memory of 2156	1424	system64.exe	32
PID 1424 wrote to memory of 2156	1424	system64.exe	32

C:\Users\Admin\AppData\Local\Temp\0122a6e44db3445247a4d9801791289a.exe
"C:\Users\Admin\AppData\Local\Temp\0122a6e44db3445247a4d9801791289a.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1624
- - C:\Windows\SysWOW64\PING.EXE
    PING 127.0.0.1 -n 2
    3⤵
    - Runs ping.exe
    PID:3008
- - C:\Users\Admin\AppData\Roaming\system64\system64.exe
    "C:\Users\Admin\AppData\Roaming\system64\system64.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1424
  - - C:\Program Files (x86)\Internet Explorer\iexplore.exe
      "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
      4⤵
      PID:2156

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.bat

Filesize
103B

MD5
5cf1cb38428d1e37fe1c0fc68888cbba

SHA1
bbdf6b71317e6e17ab756c339ef710864db0a332

SHA256
0800a2efd997eb70f70dd36e9f15302b6aa1c25a346d0617c47eec1fd769e569

SHA512
95559e14e37329d7cd8f93d87a634d5471eed5136980653a4396443d50358e67dc99541a287be3c11c773b3c14b314b09f296a33ba08375f16076eccfaf20db2

Download Submit
\Users\Admin\AppData\Roaming\system64\system64.exe

Filesize
94KB

MD5
0122a6e44db3445247a4d9801791289a

SHA1
fb36fbf97d96a2695b02cfed7a593ecae9a4f89b

SHA256
322279079e3d4bea41a88f786f51fdcd67ede21d36818ffda7d5a389a5a9d238

SHA512
fd49f3626dcbce42e74a739dc227e4327a3ae63a058f2f7533b9c94bbd3a038026fd6fa6c4f76133aa1a87f8be24a437369a3b58dd69d7eb0fac61706004401c

Download Submit
memory/1424-17-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1424-19-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/1624-16-0x0000000000280000-0x00000000002AC000-memory.dmp

Filesize
176KB

Download
memory/1624-20-0x0000000000280000-0x00000000002AC000-memory.dmp

Filesize
176KB

Download
memory/2156-18-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2304-0-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/2304-10-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads