remcos | 7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0

General

Target

7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe
Size

140KB
MD5

826caf6828a8165a5ecdbfbc3f19e6c9
SHA1

7ddc528c0f40a930d6870b98208fcdbe9bed6ad8
SHA256

7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0
SHA512

1643f1466e6d8c888723b4b5da71abb006c24a5dec9cb68c46ed306a3bb0635a693ab331f92158ac223ef1499257730bf1a16ffb496702eb0d2d020abab0df49
SSDEEP

3072:xPd4n/M+WLcilrpgGH/GwY87mVmIXhIHVS9:xP6/M+WLckOBhVmIYs

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
2496	wn2ra4ohzdr.exe
1864	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
2788	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2496 set thread context of 1864	2496	wn2ra4ohzdr.exe	32

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	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wn2ra4ohzdr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1864	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2496	2788	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe	31
PID 2788 wrote to memory of 2496	2788	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe	31
PID 2788 wrote to memory of 2496	2788	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe	31
PID 2788 wrote to memory of 2496	2788	7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe	31
PID 2496 wrote to memory of 1864	2496	wn2ra4ohzdr.exe	32
PID 2496 wrote to memory of 1864	2496	wn2ra4ohzdr.exe	32
PID 2496 wrote to memory of 1864	2496	wn2ra4ohzdr.exe	32
PID 2496 wrote to memory of 1864	2496	wn2ra4ohzdr.exe	32
PID 2496 wrote to memory of 1864	2496	wn2ra4ohzdr.exe	32
PID 2496 wrote to memory of 1864	2496	wn2ra4ohzdr.exe	32
PID 2496 wrote to memory of 1864	2496	wn2ra4ohzdr.exe	32
PID 2496 wrote to memory of 1864	2496	wn2ra4ohzdr.exe	32
PID 2496 wrote to memory of 1864	2496	wn2ra4ohzdr.exe	32
PID 2496 wrote to memory of 1864	2496	wn2ra4ohzdr.exe	32

C:\Users\Admin\AppData\Local\Temp\7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe
"C:\Users\Admin\AppData\Local\Temp\7493ca682e62b4d976af7a820f4a079c0c7864588e6155523414519307bf13a0.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2788
- 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:2496
- - 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:1864

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
140KB

MD5
19400a5fd41a12ace5c2c1158196713f

SHA1
2c1016a0688f4024e3ac31e01d770bad0b1728f6

SHA256
f97c14650a0747da569d605021fc295c71f32dae1b31ee979659088e6ecc7bc3

SHA512
346eaaf4f661ae2722cccd5d2b722cbd848ba4a383499deb653b10ab56b1454a790125171549d091cca39dd9298f57f557ae7241d1bdb19dac39e89b206eabb8

Download Submit
memory/1864-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1864-25-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1864-16-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1864-28-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1864-34-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1864-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1864-19-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1864-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/1864-27-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2496-14-0x0000000074940000-0x000000007502E000-memory.dmp

Filesize
6.9MB

Download
memory/2496-38-0x0000000074940000-0x000000007502E000-memory.dmp

Filesize
6.9MB

Download
memory/2496-15-0x0000000074940000-0x000000007502E000-memory.dmp

Filesize
6.9MB

Download
memory/2496-13-0x0000000000BE0000-0x0000000000C08000-memory.dmp

Filesize
160KB

Download
memory/2496-37-0x0000000074940000-0x000000007502E000-memory.dmp

Filesize
6.9MB

Download
memory/2788-3-0x0000000000510000-0x0000000000530000-memory.dmp

Filesize
128KB

Download
memory/2788-0-0x00000000749CE000-0x00000000749CF000-memory.dmp

Filesize
4KB

Download
memory/2788-2-0x00000000749C0000-0x00000000750AE000-memory.dmp

Filesize
6.9MB

Download
memory/2788-11-0x00000000749C0000-0x00000000750AE000-memory.dmp

Filesize
6.9MB

Download
memory/2788-1-0x0000000001360000-0x0000000001388000-memory.dmp

Filesize
160KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads