remcos | f0b11fe8efdddde0ba82e9161aeb62c6a9adc9e0639f701942154012664334a5

General

Target

JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe
Size

240KB
MD5

57cc214ce3d9c1fc9785fab18f81db5c
SHA1

68e24d3c3a5acbd6f0d7d78eba5a1c48c97c2564
SHA256

f0b11fe8efdddde0ba82e9161aeb62c6a9adc9e0639f701942154012664334a5
SHA512

1e07b2d073e06a11eb9db185b9e62c8a88fbf9f82918546b9ce401ca4010cfaba92248e39c5839d8314d71632b0be2ea16c2f3036e1347bf98bcbf34000f7669
SSDEEP

3072:bmzm/ypZ8GeSgj471L35owITz4yJKQ9XY+u1F7iw8Nbop4Gl99EQys:bmzCSLxSwQz4+odF7iYp4Gl3EFs

Score

10^/10

remcos kh discovery rat

Malware Config

Extracted

Family

remcos

Version

2.0.7 Pro

Botnet

KH

C2

abashie11.ddns.net:2828

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
iexplore.exe
copy_folder
iexplore
delete_file
false
hide_file
true
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
iexplore-K3CU4E
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

Signatures

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\filename.exe	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\filename.exe	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File created	C:\Windows\assembly\Desktop.ini	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1784 set thread context of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe
File created	C:\Windows\assembly\Desktop.ini	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1784 wrote to memory of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83
PID 1784 wrote to memory of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83
PID 1784 wrote to memory of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83
PID 1784 wrote to memory of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83
PID 1784 wrote to memory of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83
PID 1784 wrote to memory of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83
PID 1784 wrote to memory of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83
PID 1784 wrote to memory of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83
PID 1784 wrote to memory of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83
PID 1784 wrote to memory of 4796	1784	JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe	83

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57cc214ce3d9c1fc9785fab18f81db5c.exe"
1⤵
- Drops startup file
- Drops desktop.ini file(s)
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1784-0-0x00000000753F2000-0x00000000753F3000-memory.dmp

Filesize
4KB

Download
memory/1784-1-0x00000000753F0000-0x00000000759A1000-memory.dmp

Filesize
5.7MB

Download
memory/1784-2-0x00000000753F0000-0x00000000759A1000-memory.dmp

Filesize
5.7MB

Download
memory/1784-12-0x00000000753F0000-0x00000000759A1000-memory.dmp

Filesize
5.7MB

Download
memory/4796-6-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4796-9-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4796-11-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/4796-13-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download

Analysis

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