remcos | 2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195

General

Target

2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195.exe
Size

133KB
MD5

d6fbe07dc4479b81cf3fcca659ecf7b5
SHA1

e4265d86d805795984b9bb8af92d19ec55dfbc21
SHA256

2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195
SHA512

719cf92bede2b306d6f8c4d31512428f68cf9178840a80322890f4761fae4c5d32a6453d9cf8274515e4c8622de5a906d8f7158e701df1e9ea8a1b4a44b02f43
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKX:xPd4n/M+WLcilrpgGH/GwY87mVmIXaW

Score

10^/10

remcos host discovery persistence rat

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

systemcontrol.ddns.net:45000

systemcontrol2.ddns.net:45000

Attributes

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

Executes dropped EXE 2 IoCs

pid	Process
2904	wn2ra4ohzdr.exe
2288	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
2184	2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2904 set thread context of 2288	2904	wn2ra4ohzdr.exe	31

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

System Information Discovery
T1082

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	wn2ra4ohzdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2288	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2904	2184	2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195.exe	30
PID 2184 wrote to memory of 2904	2184	2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195.exe	30
PID 2184 wrote to memory of 2904	2184	2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195.exe	30
PID 2184 wrote to memory of 2904	2184	2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195.exe	30
PID 2904 wrote to memory of 2288	2904	wn2ra4ohzdr.exe	31
PID 2904 wrote to memory of 2288	2904	wn2ra4ohzdr.exe	31
PID 2904 wrote to memory of 2288	2904	wn2ra4ohzdr.exe	31
PID 2904 wrote to memory of 2288	2904	wn2ra4ohzdr.exe	31
PID 2904 wrote to memory of 2288	2904	wn2ra4ohzdr.exe	31
PID 2904 wrote to memory of 2288	2904	wn2ra4ohzdr.exe	31
PID 2904 wrote to memory of 2288	2904	wn2ra4ohzdr.exe	31
PID 2904 wrote to memory of 2288	2904	wn2ra4ohzdr.exe	31
PID 2904 wrote to memory of 2288	2904	wn2ra4ohzdr.exe	31
PID 2904 wrote to memory of 2288	2904	wn2ra4ohzdr.exe	31

C:\Users\Admin\AppData\Local\Temp\2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195.exe
"C:\Users\Admin\AppData\Local\Temp\2c956dbbe6148be036c83f263c1dca1ccdfa889a493b924a53186eb0d72ed195.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
  "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2904
- - C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe
    "C:\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    PID:2288

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 Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\raj4dkhhiap\wn2ra4ohzdr.exe

Filesize
133KB

MD5
a6ff1953f3b4b0b3510d2eab8bcefee1

SHA1
9cc70659b478023ff85034ba7be0ae0020bc8b65

SHA256
40a136cd71b3e374e52dedd96c53705cb147fb34a8c00efa26352d102fb5dcba

SHA512
3d707ccf9f62b302e483beba5bd18d179b4e481c47c1ff1cd42f09a2ca399fa40fc90ecb0761edc58b9add91c2c99fabc2f99430d1de8ccefac25094be794f95

Download Submit
memory/2184-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/2184-1-0x0000000000E50000-0x0000000000E78000-memory.dmp

Filesize
160KB

Download
memory/2184-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2184-3-0x0000000000420000-0x0000000000440000-memory.dmp

Filesize
128KB

Download
memory/2184-6-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/2184-14-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2288-23-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2288-21-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2288-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2288-31-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2288-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2288-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2288-19-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2288-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2288-17-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2904-16-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2904-15-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2904-13-0x0000000000060000-0x0000000000088000-memory.dmp

Filesize
160KB

Download
memory/2904-35-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2904-36-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads