remcos | 5aff1782a47c7a60e97ca86c1d44f988e557b679bbe874b1f8fefeccf60e9c6b

General

Target

21f2c75fb8d0d792c99fc526d658e52b_JaffaCakes118.exe
Size

131KB
MD5

21f2c75fb8d0d792c99fc526d658e52b
SHA1

09ca7cfe013050c1d4c78d5cf05f06a3d5e1cdaf
SHA256

5aff1782a47c7a60e97ca86c1d44f988e557b679bbe874b1f8fefeccf60e9c6b
SHA512

36e1129da3f94d0bccc56a1b32bd3082fd7949ac04c2f8763e30106384a40c6c1668b56af69fcb8a69f8c9deba78971532a70de57df7fc844042e861af8ca8f8
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjKX:xPd4n/M+WLcilrpgGH/GwY87mVmIXH

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

Executes dropped EXE 2 IoCs

pid	Process
1668	wn2ra4ohzdr.exe
2824	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
268	21f2c75fb8d0d792c99fc526d658e52b_JaffaCakes118.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"	21f2c75fb8d0d792c99fc526d658e52b_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1668 set thread context of 2824	1668	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	21f2c75fb8d0d792c99fc526d658e52b_JaffaCakes118.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
2824	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 268 wrote to memory of 1668	268	21f2c75fb8d0d792c99fc526d658e52b_JaffaCakes118.exe	31
PID 268 wrote to memory of 1668	268	21f2c75fb8d0d792c99fc526d658e52b_JaffaCakes118.exe	31
PID 268 wrote to memory of 1668	268	21f2c75fb8d0d792c99fc526d658e52b_JaffaCakes118.exe	31
PID 268 wrote to memory of 1668	268	21f2c75fb8d0d792c99fc526d658e52b_JaffaCakes118.exe	31
PID 1668 wrote to memory of 2824	1668	wn2ra4ohzdr.exe	32
PID 1668 wrote to memory of 2824	1668	wn2ra4ohzdr.exe	32
PID 1668 wrote to memory of 2824	1668	wn2ra4ohzdr.exe	32
PID 1668 wrote to memory of 2824	1668	wn2ra4ohzdr.exe	32
PID 1668 wrote to memory of 2824	1668	wn2ra4ohzdr.exe	32
PID 1668 wrote to memory of 2824	1668	wn2ra4ohzdr.exe	32
PID 1668 wrote to memory of 2824	1668	wn2ra4ohzdr.exe	32
PID 1668 wrote to memory of 2824	1668	wn2ra4ohzdr.exe	32
PID 1668 wrote to memory of 2824	1668	wn2ra4ohzdr.exe	32
PID 1668 wrote to memory of 2824	1668	wn2ra4ohzdr.exe	32

C:\Users\Admin\AppData\Local\Temp\21f2c75fb8d0d792c99fc526d658e52b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\21f2c75fb8d0d792c99fc526d658e52b_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:268
- 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:1668
- - 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:2824

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
131KB

MD5
1c2206a43a6a0dcae4784552e3e6238d

SHA1
cdd26df1cd4693cb906bb53b98535d46a7f7452b

SHA256
dcd0de40952e433b1c86f38e484a73bc5e240361c43ccffcfef4b80407c38a64

SHA512
5d58c844da1293fee869b383e084f5c8480a86c4a51909155857a6777d9f31305f8f18665443e81c966464740e82f4551ef6155ec4b8f3beb2b70a8cdd79df1d

Download Submit
memory/268-1-0x00000000011F0000-0x0000000001218000-memory.dmp

Filesize
160KB

Download
memory/268-2-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/268-3-0x0000000000410000-0x0000000000430000-memory.dmp

Filesize
128KB

Download
memory/268-14-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/268-12-0x000000007412E000-0x000000007412F000-memory.dmp

Filesize
4KB

Download
memory/268-0-0x000000007412E000-0x000000007412F000-memory.dmp

Filesize
4KB

Download
memory/1668-36-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/1668-13-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/1668-15-0x00000000008B0000-0x00000000008D8000-memory.dmp

Filesize
160KB

Download
memory/1668-16-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/1668-37-0x0000000074120000-0x000000007480E000-memory.dmp

Filesize
6.9MB

Download
memory/2824-17-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2824-27-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2824-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2824-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2824-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2824-32-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2824-33-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2824-26-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2824-19-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads