remcos | 41376827ba300374727d29048920ca2a2d9f20b929e964098181981581e47af2

General

Target

cayV0Deo9jSt417.exe
Size

958KB
MD5

aa3cdd5145d9fb980c061d2d8653fa8d
SHA1

de696701275b01ddad5461e269d7ab15b7466d6a
SHA256

41376827ba300374727d29048920ca2a2d9f20b929e964098181981581e47af2
SHA512

4be32b5e9eaffa8d3f4cce515717faa6259373e8dbd258b9ebc2534fd0b62aaa7043093204e43627983fe332f63d8f998a90dc1cbb74f54a18c55f67e42a8a32
SSDEEP

24576:PExy+NP2Gc/hgXzYRVG7mRPQeMeokqjVnlqud+/2P+A:6+Gc/hD67mJQeMhkqXfd+/9A

Score

10^/10

remcos go!!!discovery persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Go!!!

C2

dangerous.hopto.org:2404

dangerous.hopto.org:2602

91.92.242.184:2602

91.92.242.184:2404

Attributes

audio_folder
??????????? ??????
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
taskhost.exe
copy_folder
System32
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
tapiui.dat
keylog_flag
false
keylog_folder
System32
mouse_option
false
mutex
???-LDKG91
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
?????????
screenshot_path
%AppData%
screenshot_time
10
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
2852	taskhost.exe

Loads dropped DLL 1 IoCs

pid	Process
2784	clip.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\???-LDKG91 = "\"C:\\Users\\Admin\\AppData\\Roaming\\System32\\taskhost.exe\""	clip.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2668 set thread context of 2784	2668	cayV0Deo9jSt417.exe	31

System Location Discovery: System Language Discovery 1 TTPs 3 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	cayV0Deo9jSt417.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	clip.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskhost.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2668 wrote to memory of 2784	2668	cayV0Deo9jSt417.exe	31
PID 2784 wrote to memory of 2852	2784	clip.exe	32
PID 2784 wrote to memory of 2852	2784	clip.exe	32
PID 2784 wrote to memory of 2852	2784	clip.exe	32
PID 2784 wrote to memory of 2852	2784	clip.exe	32

C:\Users\Admin\AppData\Local\Temp\cayV0Deo9jSt417.exe
"C:\Users\Admin\AppData\Local\Temp\cayV0Deo9jSt417.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Windows\SysWOW64\clip.exe
  "C:\Windows\SysWOW64\clip.exe"
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Users\Admin\AppData\Roaming\System32\taskhost.exe
    "C:\Users\Admin\AppData\Roaming\System32\taskhost.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2852

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

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

\Users\Admin\AppData\Roaming\System32\taskhost.exe

Filesize
25KB

MD5
04ebddcc3a90b6512aef4aa2eee36624

SHA1
185cd595c19dec765d5fcbdff914140b5354a864

SHA256
1c4b1acf31ec2dd48c746ad7cf2cc1404c76c7492bd15a6953f2ce6991496856

SHA512
fbb7d67593018cd5a12355800b8e2974ad8f04918fafedb89c98fe3ed9cde53fa3ae91e26474cb9d2b1f9e4f7b6267ba1eece6f02ae5df20e95ce94bbb1f28da

Download Submit
memory/2668-0-0x00000000742AE000-0x00000000742AF000-memory.dmp

Filesize
4KB

Download
memory/2668-1-0x0000000001050000-0x0000000001146000-memory.dmp

Filesize
984KB

Download
memory/2668-2-0x0000000000370000-0x0000000000378000-memory.dmp

Filesize
32KB

Download
memory/2668-3-0x00000000003E0000-0x00000000003FA000-memory.dmp

Filesize
104KB

Download
memory/2668-4-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2668-5-0x0000000000B90000-0x0000000000C36000-memory.dmp

Filesize
664KB

Download
memory/2668-9-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2784-6-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2784-10-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2784-8-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download
memory/2784-17-0x0000000000400000-0x0000000000482000-memory.dmp

Filesize
520KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads