remcos | 38713c63b74ba3afb802be57aae6a4563b8127e9ad4337f0c1bb971df82c920b

General

Target

JaffaCakes118_1dadf62523c0d4f37dc8b3b76047af49.exe
Size

132KB
MD5

1dadf62523c0d4f37dc8b3b76047af49
SHA1

a92dfc8fd4a03eaf7494a76568fb7dcdbef251f8
SHA256

38713c63b74ba3afb802be57aae6a4563b8127e9ad4337f0c1bb971df82c920b
SHA512

a8f7d3caa10dd0a26cd8bfbe5c8432f7fc732df4b6e10b4d88ed239eafd84443123428db1377d0e2eac39ee297afbecf055193329e8b0e1d6f707b66be913b67
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKK:xPd4n/M+WLcilrpgGH/GwY87mVmIXxY

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
2928	wn2ra4ohzdr.exe
2584	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
1388	JaffaCakes118_1dadf62523c0d4f37dc8b3b76047af49.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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	JaffaCakes118_1dadf62523c0d4f37dc8b3b76047af49.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2928 set thread context of 2584	2928	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	JaffaCakes118_1dadf62523c0d4f37dc8b3b76047af49.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
2584	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 2928	1388	JaffaCakes118_1dadf62523c0d4f37dc8b3b76047af49.exe	31
PID 1388 wrote to memory of 2928	1388	JaffaCakes118_1dadf62523c0d4f37dc8b3b76047af49.exe	31
PID 1388 wrote to memory of 2928	1388	JaffaCakes118_1dadf62523c0d4f37dc8b3b76047af49.exe	31
PID 1388 wrote to memory of 2928	1388	JaffaCakes118_1dadf62523c0d4f37dc8b3b76047af49.exe	31
PID 2928 wrote to memory of 2584	2928	wn2ra4ohzdr.exe	32
PID 2928 wrote to memory of 2584	2928	wn2ra4ohzdr.exe	32
PID 2928 wrote to memory of 2584	2928	wn2ra4ohzdr.exe	32
PID 2928 wrote to memory of 2584	2928	wn2ra4ohzdr.exe	32
PID 2928 wrote to memory of 2584	2928	wn2ra4ohzdr.exe	32
PID 2928 wrote to memory of 2584	2928	wn2ra4ohzdr.exe	32
PID 2928 wrote to memory of 2584	2928	wn2ra4ohzdr.exe	32
PID 2928 wrote to memory of 2584	2928	wn2ra4ohzdr.exe	32
PID 2928 wrote to memory of 2584	2928	wn2ra4ohzdr.exe	32
PID 2928 wrote to memory of 2584	2928	wn2ra4ohzdr.exe	32

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1dadf62523c0d4f37dc8b3b76047af49.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1dadf62523c0d4f37dc8b3b76047af49.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1388
- 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:2928
- - 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:2584

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
132KB

MD5
5da750fd8f3130e3320f3b1633a64830

SHA1
432641280d5973fee99d3566b0dac5a78f0f3ddf

SHA256
c8ccf32b1da688c4b33acfd58b1ac5091230410547ef12640a01ff9b7b6f92a3

SHA512
22be67370f349447dafc33e7eead2f9b059ceb9187b783ff444dba81f1bacf02f76bd2f62073afbd948d752e43e0dce6195f5b2749736c7ff53f4982c520971e

Download Submit
memory/1388-0-0x000000007479E000-0x000000007479F000-memory.dmp

Filesize
4KB

Download
memory/1388-1-0x00000000010D0000-0x00000000010F8000-memory.dmp

Filesize
160KB

Download
memory/1388-2-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/1388-3-0x0000000000560000-0x0000000000580000-memory.dmp

Filesize
128KB

Download
memory/1388-11-0x0000000074790000-0x0000000074E7E000-memory.dmp

Filesize
6.9MB

Download
memory/2584-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2584-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2584-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2584-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2584-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2584-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2584-20-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2584-17-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2584-16-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2928-14-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/2928-13-0x0000000000FD0000-0x0000000000FF8000-memory.dmp

Filesize
160KB

Download
memory/2928-15-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/2928-33-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/2928-34-0x0000000074710000-0x0000000074DFE000-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