remcos | ecda47981df58b45e0c3ff4271613a55f5134ef9acf5d041fcca8b49ddbc9ee7

General

Target

17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe
Size

917KB
MD5

41c5accc5d18ccfc53abd3bd9a0cd4fb
SHA1

4d31540eb9d0e978b3692e253c2f5ddd42cfe77a
SHA256

17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6
SHA512

338efad9b6ed7352c04f3b12e7a41f24aa42e643b9bd58e97f6a8d010c4197614787dbf1a2626ff240823ac085090219e99fa36402de1ff77165dc65c023cb7f
SSDEEP

12288:zT9NjqguOyNcpLiFxXbhc9JhWc1wOKS8oh:lAHPsh

Score

10^/10

remcos new-files discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

2.7.1 Pro

Botnet

NEW-FILES

C2

www.kesaihk.com:5004

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
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-M95371
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
Remcos family
remcos

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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\vlc = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\VideoLAN\\vlc.exe\""	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2384 set thread context of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30

System Location Discovery: System Language Discovery 1 TTPs 1 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	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2668	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30
PID 2384 wrote to memory of 2668	2384	17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe	30

C:\Users\Admin\AppData\Local\Temp\17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe
"C:\Users\Admin\AppData\Local\Temp\17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Users\Admin\AppData\Local\Temp\17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe
  "C:\Users\Admin\AppData\Local\Temp\17e9d52b94e1a65fc82877895556c7bcc1087c442b146ef7d5ccfe1ce14f3ed6.exe"
  2⤵
  - Suspicious use of SetWindowsHookEx
  PID:2668

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

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Downloads

C:\Users\Admin\AppData\Roaming\remcos\logs.dat

Filesize
74B

MD5
f529f1c734b45845679e4816108eb124

SHA1
3d8581f0ecb939b5733f2031292d07e74f17f890

SHA256
5cacc54fe6ec07f10ef1cc07adb533e597a7bfec37aadd00921d0a70f2e16af7

SHA512
e7026d98b209f7719bc1f2533e4e1e1bf33c807676943a5be4f3b4c11a8595ebf3e76bff8dc27c9876b7cf934b23ce7aebd5ac69caf52f0c3bee3f38b82424a4

Download Submit
memory/2384-0-0x00000000740CE000-0x00000000740CF000-memory.dmp

Filesize
4KB

Download
memory/2384-1-0x0000000000EB0000-0x0000000000F9C000-memory.dmp

Filesize
944KB

Download
memory/2384-2-0x0000000000520000-0x000000000053E000-memory.dmp

Filesize
120KB

Download
memory/2384-4-0x0000000000560000-0x0000000000572000-memory.dmp

Filesize
72KB

Download
memory/2384-16-0x00000000740C0000-0x00000000747AE000-memory.dmp

Filesize
6.9MB

Download
memory/2668-10-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2668-11-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2668-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2668-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2668-8-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2668-7-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2668-5-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2668-17-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2668-18-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2668-21-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/2668-14-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads