remcos | c684c19f26ab739c326667fc6c0ad1d6288846b22da744940e7865bbde25dd00

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
23/07/2024, 04:41

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General

Target
662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe
Size 983KB
Sample240723-fa8ezaydpq
SHA256 c684c19f26ab739c326667fc6c0ad1d6288846b22da744940e7865bbde25dd00
MD5 662d5ab8f03c44205c00e9f12e99105a
SHA1 df86b024cd1d3135a0056c32c5e682420b4301ad
SHA512 abcec11083f1895767d4a880cef5c03be189f29246062eb45c54bb020e7d51cda84c192bfb285f3e751a2249e731d087eec29cf7db8acf1a485ade93fc040a9f
SSDEEP 24576:Emy2FtwvxuN4HtOOpmF4zH5YOMGk6pbKneG9tK:TXFQINIOOpJzH515gQ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

remcos feb persistence rat

Malware Config

Extracted

Family

remcos

Version

3.0.2 Pro

Botnet

194.5.98.202:2404

Attributes

audio_folder
audio
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
5
copy_file
remcos.exe
copy_folder
remcos
delete_file
false
hide_file
false
hide_keylog_file
false
install_flag
true
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-8W5M5B
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
1
startup_value
remcos
take_screenshot_option
false
take_screenshot_time
5

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 2 IoCs

pid	Process
3788	remcos.exe
4268	remcos.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\remcos.exe\""	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\remcos = "\"C:\\Users\\Admin\\AppData\\Roaming\\remcos\\remcos.exe\""	remcos.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2752 set thread context of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 3788 set thread context of 4268	3788	remcos.exe	103

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2990742725-2267136959-192470804-1000_Classes\Local Settings	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4268	remcos.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 2752 wrote to memory of 3384	2752	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	97
PID 3384 wrote to memory of 3284	3384	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	98
PID 3384 wrote to memory of 3284	3384	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	98
PID 3384 wrote to memory of 3284	3384	662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe	98
PID 3284 wrote to memory of 1752	3284	WScript.exe	99
PID 3284 wrote to memory of 1752	3284	WScript.exe	99
PID 3284 wrote to memory of 1752	3284	WScript.exe	99
PID 1752 wrote to memory of 3788	1752	cmd.exe	101
PID 1752 wrote to memory of 3788	1752	cmd.exe	101
PID 1752 wrote to memory of 3788	1752	cmd.exe	101
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 3788 wrote to memory of 4268	3788	remcos.exe	103
PID 4268 wrote to memory of 3604	4268	remcos.exe	104
PID 4268 wrote to memory of 3604	4268	remcos.exe	104
PID 4268 wrote to memory of 3604	4268	remcos.exe	104

C:\Users\Admin\AppData\Local\Temp\662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2752
- C:\Users\Admin\AppData\Local\Temp\662d5ab8f03c44205c00e9f12e99105a_JaffaCakes118.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3384
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
    3⤵
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:3284
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1752
    - - C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
        
        C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:3788
      - C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
        
        "{path}"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:4268
        
        C:\Windows\SysWOW64\svchost.exe
        
        C:\Windows\SysWOW64\svchost.exe
        7⤵
        
        PID:3604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

install.vbs

Path C:\Users\Admin\AppData\Local\Temp\install.vbs
Size 418B
SHA256 655787cf79040ee701963986320556a834d6345e850e03653e4852d94eb09416
MD5 ff449f6f7bc5e2d800eb30e2d2c56611
SHA1 93419ea805b9ce35a766e5c56db50d54c2d3f94b
SHA512 02a17064c837d36ba241fb8edf9266e33479a10eb8652b974158a3227878a801da29db1108413bb2c298a105b3c19bd20c3a3100f19444189f434706825766a6
MD5 SHA1 SHA512

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logs.dat

Path C:\Users\Admin\AppData\Roaming\remcos\logs.dat
Size 74B
SHA256 ca6b7f1592aa05fd670629f4e18c0cdb7cc3e09f06b4abef918f917e3267928a
MD5 e17c3d0d2a74f37e7059fe9ec92828eb
SHA1 117755fe80bdd12a1b30404cabd9d2a53697fa65
SHA512 2c9fc2b51f425bf58862a2be389b999992c2f7f3e3c9740d3adf0f74f199af27d0f22d297eed6e70b7b9694e6b883d615ff781ccd82a2421cbe20b0f8c0fe0dc
MD5 SHA1 SHA512

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remcos.exe

Path C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
Size 983KB
SHA256 c684c19f26ab739c326667fc6c0ad1d6288846b22da744940e7865bbde25dd00
MD5 662d5ab8f03c44205c00e9f12e99105a
SHA1 df86b024cd1d3135a0056c32c5e682420b4301ad
SHA512 abcec11083f1895767d4a880cef5c03be189f29246062eb45c54bb020e7d51cda84c192bfb285f3e751a2249e731d087eec29cf7db8acf1a485ade93fc040a9f
SSDEEP 24576:Emy2FtwvxuN4HtOOpmF4zH5YOMGk6pbKneG9tK:TXFQINIOOpJzH515gQ
MD5 SHA1 SHA512 SSDEEP

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memory/2752-6-0x0000000007750000-0x00000000077EC000-memory.dmp

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memory/2752-18-0x0000000074D30000-0x00000000754E0000-memory.dmp

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memory/2752-4-0x0000000074D30000-0x00000000754E0000-memory.dmp

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memory/2752-0-0x0000000074D3E000-0x0000000074D3F000-memory.dmp

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memory/2752-7-0x0000000005410000-0x0000000005418000-memory.dmp

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memory/2752-8-0x0000000074D3E000-0x0000000074D3F000-memory.dmp

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memory/2752-9-0x0000000074D30000-0x00000000754E0000-memory.dmp

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memory/2752-10-0x00000000078F0000-0x00000000079BC000-memory.dmp

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memory/2752-1-0x0000000000320000-0x000000000041C000-memory.dmp

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memory/2752-2-0x0000000005430000-0x00000000059D4000-memory.dmp

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memory/2752-3-0x0000000004DD0000-0x0000000004E62000-memory.dmp

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memory/2752-5-0x0000000004F80000-0x0000000004F8A000-memory.dmp

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memory/3384-17-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/3384-21-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/3384-14-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/3384-11-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/3384-12-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/4268-30-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/4268-29-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/4268-33-0x0000000000400000-0x0000000000478000-memory.dmp

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memory/4268-36-0x0000000000400000-0x0000000000478000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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