remcos | 0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2

General

Target

0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe
Size

133KB
MD5

69df44cc9bf3615b052a09ad8c2d480f
SHA1

d4142650c5e3f97926e46ece00bf7cf3d1ec365e
SHA256

0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2
SHA512

feff75495ce185fe46947f5301f2b9ea5b57e9a09d217949ce12d99a1749e6f07561a3de49629708f5342ee3e8143b26aedcca160e09cbbd907fe32c97f2a6fe
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKP:xPd4n/M+WLcilrpgGH/GwY87mVmIXay

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
1624	wn2ra4ohzdr.exe
2248	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
2440	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1624 set thread context of 2248	1624	wn2ra4ohzdr.exe	29

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	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2248	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 1624	2440	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe	28
PID 2440 wrote to memory of 1624	2440	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe	28
PID 2440 wrote to memory of 1624	2440	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe	28
PID 2440 wrote to memory of 1624	2440	0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe	28
PID 1624 wrote to memory of 2248	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2248	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2248	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2248	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2248	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2248	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2248	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2248	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2248	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2248	1624	wn2ra4ohzdr.exe	29

C:\Users\Admin\AppData\Local\Temp\0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe
"C:\Users\Admin\AppData\Local\Temp\0dd8fc246306cd3dd51500e236da808e5cb590e29b157b6fe097248277684db2.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2440
- 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:1624
- - 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:2248

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

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

Filesize
133KB

MD5
8d109fdf3a43945e94d95a050787892b

SHA1
b397e043810756f9881d3c6c606effc411545d31

SHA256
ae3aab33b766cbfdd4e9abeed44838692a1c4d8769c271cff6043aa4c0828136

SHA512
f907b016d381d5ce8ada0ca16bad1553b24e102b20e7ea333f073c6389e2c64c46f27cd2d19d31f88a65eff816346825d9d41e6cce49aecbf89d3e60e1a9e194

Download Submit
memory/1624-13-0x00000000001E0000-0x0000000000208000-memory.dmp

Filesize
160KB

Download
memory/1624-34-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/1624-33-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/1624-14-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/1624-15-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/2248-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2248-17-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2248-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2248-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2248-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2248-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2248-20-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2248-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2248-16-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2440-0-0x0000000074B4E000-0x0000000074B4F000-memory.dmp

Filesize
4KB

Download
memory/2440-12-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/2440-3-0x0000000000530000-0x0000000000550000-memory.dmp

Filesize
128KB

Download
memory/2440-2-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

Download
memory/2440-1-0x0000000001160000-0x0000000001188000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads