remcos | 69b1d59990dfb0f21e19d4e05a8f60ce145e89368769aa495d9ee3025901977c

General

Target

2196e0cfb27b55107edf93300ec25cdc_JaffaCakes118.exe
Size

131KB
MD5

2196e0cfb27b55107edf93300ec25cdc
SHA1

6e1dee4af4e156e9fef385729c5bd0257ff10cbf
SHA256

69b1d59990dfb0f21e19d4e05a8f60ce145e89368769aa495d9ee3025901977c
SHA512

10e69b22109154298b6a766f9182bb1c096064aa812a1f3816e29f49076c2231f44af7bd44bc22e0861202ea0c71085e597dc5afa91588aa8581d745e5811159
SSDEEP

1536:ITHiPBX4nDzMyRXGHrc9YRHqbTypgpmb5Q+ZReSdhk/J+YLgD3mrxb53cSuYQjK4:xPd4n/M+WLcilrpgGH/GwY87mVmIXI

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
1624	wn2ra4ohzdr.exe
2956	wn2ra4ohzdr.exe

Loads dropped DLL 1 IoCs

pid	Process
2440	2196e0cfb27b55107edf93300ec25cdc_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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\raj4dkhhiap = "C:\\Users\\Admin\\AppData\\Roaming\\raj4dkhhiap\\wn2ra4ohzdr.exe"	2196e0cfb27b55107edf93300ec25cdc_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1624 set thread context of 2956	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	2196e0cfb27b55107edf93300ec25cdc_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
2956	wn2ra4ohzdr.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 1624	2440	2196e0cfb27b55107edf93300ec25cdc_JaffaCakes118.exe	28
PID 2440 wrote to memory of 1624	2440	2196e0cfb27b55107edf93300ec25cdc_JaffaCakes118.exe	28
PID 2440 wrote to memory of 1624	2440	2196e0cfb27b55107edf93300ec25cdc_JaffaCakes118.exe	28
PID 2440 wrote to memory of 1624	2440	2196e0cfb27b55107edf93300ec25cdc_JaffaCakes118.exe	28
PID 1624 wrote to memory of 2956	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2956	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2956	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2956	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2956	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2956	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2956	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2956	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2956	1624	wn2ra4ohzdr.exe	29
PID 1624 wrote to memory of 2956	1624	wn2ra4ohzdr.exe	29

C:\Users\Admin\AppData\Local\Temp\2196e0cfb27b55107edf93300ec25cdc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2196e0cfb27b55107edf93300ec25cdc_JaffaCakes118.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:2956

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
97c3f085eac4786884d8ebd269b6f7f6

SHA1
00c4d3e5c43450edf392a23941417f95959a9638

SHA256
5c01d850fd327182e3f8a02ecf67678ae383330b8a7f5ff02306161da4249107

SHA512
8736c8eddb8a598628388a6f155360d95bc4fd7b236eac006d2b683cddb0f4b34c385b6e33e6075dafcbc8b07022802a55bd90f8638c75088a9f5127a4ae93b5

Download Submit
memory/1624-33-0x000000007445E000-0x000000007445F000-memory.dmp

Filesize
4KB

Download
memory/1624-13-0x000000007445E000-0x000000007445F000-memory.dmp

Filesize
4KB

Download
memory/1624-14-0x00000000011F0000-0x0000000001218000-memory.dmp

Filesize
160KB

Download
memory/1624-15-0x0000000074450000-0x0000000074B3E000-memory.dmp

Filesize
6.9MB

Download
memory/1624-35-0x0000000074450000-0x0000000074B3E000-memory.dmp

Filesize
6.9MB

Download
memory/1624-34-0x0000000074450000-0x0000000074B3E000-memory.dmp

Filesize
6.9MB

Download
memory/2440-1-0x0000000000E40000-0x0000000000E68000-memory.dmp

Filesize
160KB

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

Filesize
6.9MB

Download
memory/2440-3-0x0000000000590000-0x00000000005B0000-memory.dmp

Filesize
128KB

Download
memory/2440-11-0x0000000074B40000-0x000000007522E000-memory.dmp

Filesize
6.9MB

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

Filesize
4KB

Download
memory/2956-25-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2956-20-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2956-17-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2956-18-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2956-29-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2956-30-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2956-22-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2956-24-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download
memory/2956-16-0x0000000000400000-0x0000000000417000-memory.dmp

Filesize
92KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads