remcos | c18c4e383f8776032ddb4b7e1782c5068469649b60dbb8f1fe1df2e32399161f

General

Target

UPSCBIJ99581770131.exe
Size

1.1MB
MD5

4e991fbca595be038bf07c2bec420e54
SHA1

7da7bef438d2a35ea39a59623b78d1c8871f2462
SHA256

43994b889ce86f1e9c546467c18d9dfa3cc1cec6f5b2dc88799ecb731e1bc43c
SHA512

b2ebcb9f58a019c3265d5e001897cb778444a5f8caa509fb3b14ee368cf553aeab27769453ca9164a86f12e2a531b68b96daf0d5df8dbcc9ee6d3027bd6d2c90
SSDEEP

24576:K1Cp6h1NhMue8erGEEdQqzGdGD3aCg9zTZCX7r3gps:BCRMP8erseqadd9xC3W

Score

10^/10

remcos remotehost discovery rat

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

yayabeloo.duckdns.org:6847

Attributes

audio_folder
MicRecords
audio_path
ApplicationPath
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-VPA6N9
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
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
Remcos family
remcos

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1916 set thread context of 2828	1916	UPSCBIJ99581770131.exe	31

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	UPSCBIJ99581770131.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	UPSCBIJ99581770131.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2828	UPSCBIJ99581770131.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31
PID 1916 wrote to memory of 2828	1916	UPSCBIJ99581770131.exe	31

C:\Users\Admin\AppData\Local\Temp\UPSCBIJ99581770131.exe
"C:\Users\Admin\AppData\Local\Temp\UPSCBIJ99581770131.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1916
- C:\Users\Admin\AppData\Local\Temp\UPSCBIJ99581770131.exe
  "C:\Users\Admin\AppData\Local\Temp\UPSCBIJ99581770131.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2828

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

C:\ProgramData\remcos\logs.dat

Filesize
144B

MD5
14d237636c19fb96618dadba9b7bcc43

SHA1
c9d3bf54cd4d2a1acb1551595bd9b86526842594

SHA256
b470b0011af7b6ac05002c8b1fbde4e89f7c32c0a34dca41f49e3de0c8617d68

SHA512
aeef8517ac73157a9edc36a31fb76520530478624bdd237796066a5d347df9aa9b02e93fede3c48f70aec892c8805bd97f0fef9212152d8a20d01fc9e647deee

Download Submit
memory/1916-0-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/1916-1-0x0000000000D60000-0x0000000000E8C000-memory.dmp

Filesize
1.2MB

Download
memory/1916-2-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/1916-3-0x0000000000980000-0x000000000099C000-memory.dmp

Filesize
112KB

Download
memory/1916-4-0x0000000074E8E000-0x0000000074E8F000-memory.dmp

Filesize
4KB

Download
memory/1916-5-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/1916-6-0x0000000004960000-0x0000000004A22000-memory.dmp

Filesize
776KB

Download
memory/1916-26-0x0000000074E80000-0x000000007556E000-memory.dmp

Filesize
6.9MB

Download
memory/2828-20-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-27-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-10-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-9-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-15-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-21-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-24-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-7-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-18-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-25-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-16-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2828-12-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-28-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-29-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-31-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-35-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-36-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-14-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-43-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-51-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-52-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-59-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/2828-60-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

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