remcos | 36ee4cc36b92868bf1c674cacd2cf48eaf5b0fc29fba0e1e9dc13aa920b7ee32

Analysis

max time kernel
155s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20220722-en
resource tags

arch:x64arch:x86image:win10v2004-20220722-enlocale:en-usos:windows10-2004-x64system
submitted
31/07/2022, 08:22

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General

Target
e5574ec07dff681e049b1bee548cb6ff.exe
Size 880KB
Sample220731-j9kdzagaa4
SHA256 36ee4cc36b92868bf1c674cacd2cf48eaf5b0fc29fba0e1e9dc13aa920b7ee32
MD5 e5574ec07dff681e049b1bee548cb6ff
SHA1 9dd04c156b94d1e5d4cd01dcd3b8016fd6ceaa32
SHA512 140e15991ead0f38c51683402c72db7dcb97c06384c565fcc5fa1e57b11381e10491be3209e0b239698aaae7e5c20983233c3357030a222874ba4a78ddefb593
MD5 SHA1 SHA512

Score

10^/10

remcos gee uk persistence rat

Malware Config

Extracted

Family

remcos

Botnet

Gee uk

davidwongwarzone.zapto.org:2030

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
i0s.exe
delete_file
false
hide_file
true
hide_keylog_file
true
install_flag
true
install_path
%AppData%
keylog_crypt
true
keylog_file
logs.dat
keylog_flag
false
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-4Y8NLE
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
ios
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 1 IoCs

pid	Process
4204	i0s.exe

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-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation	e5574ec07dff681e049b1bee548cb6ff.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation	WScript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Software\Microsoft\Windows\CurrentVersion\Run\	e5574ec07dff681e049b1bee548cb6ff.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ios = "\"C:\\Users\\Admin\\AppData\\Roaming\\i0s.exe\""	e5574ec07dff681e049b1bee548cb6ff.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1172 set thread context of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000_Classes\Local Settings	e5574ec07dff681e049b1bee548cb6ff.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 1172 wrote to memory of 3388	1172	e5574ec07dff681e049b1bee548cb6ff.exe	92
PID 3388 wrote to memory of 2968	3388	e5574ec07dff681e049b1bee548cb6ff.exe	93
PID 3388 wrote to memory of 2968	3388	e5574ec07dff681e049b1bee548cb6ff.exe	93
PID 3388 wrote to memory of 2968	3388	e5574ec07dff681e049b1bee548cb6ff.exe	93
PID 2968 wrote to memory of 2052	2968	WScript.exe	96
PID 2968 wrote to memory of 2052	2968	WScript.exe	96
PID 2968 wrote to memory of 2052	2968	WScript.exe	96
PID 2052 wrote to memory of 4204	2052	cmd.exe	98
PID 2052 wrote to memory of 4204	2052	cmd.exe	98
PID 2052 wrote to memory of 4204	2052	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\e5574ec07dff681e049b1bee548cb6ff.exe
"C:\Users\Admin\AppData\Local\Temp\e5574ec07dff681e049b1bee548cb6ff.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1172
- C:\Users\Admin\AppData\Local\Temp\e5574ec07dff681e049b1bee548cb6ff.exe
  "C:\Users\Admin\AppData\Local\Temp\e5574ec07dff681e049b1bee548cb6ff.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:3388
- - 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:2968
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\i0s.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2052
    - - C:\Users\Admin\AppData\Roaming\i0s.exe
        
        C:\Users\Admin\AppData\Roaming\i0s.exe
        5⤵
        Executes dropped EXE
        
        PID:4204

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

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 398B
SHA256 089c7010087528d06f8a2ab88628b2113ff7bd6b72a5fcae17c40e816e00b7ab
MD5 93233cfdb1b37218d9d6c42df40410d5
SHA1 8202a92c8effc12ce02528eceda9c9a794620625
SHA512 a3f963db3f269661022cf95f6d5ee97b6514ec3d37cc296c9f3c4adaf969ea282f041e994ddd88287608e364f24ec9a369aa97b590ddede7b6de371530151ff5
MD5 SHA1 SHA512

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i0s.exe

Path C:\Users\Admin\AppData\Roaming\i0s.exe
Size 880KB
SHA256 36ee4cc36b92868bf1c674cacd2cf48eaf5b0fc29fba0e1e9dc13aa920b7ee32
MD5 e5574ec07dff681e049b1bee548cb6ff
SHA1 9dd04c156b94d1e5d4cd01dcd3b8016fd6ceaa32
SHA512 140e15991ead0f38c51683402c72db7dcb97c06384c565fcc5fa1e57b11381e10491be3209e0b239698aaae7e5c20983233c3357030a222874ba4a78ddefb593
SSDEEP 24576:OVDz2rQXLY7+AvX+ahs6vcrDa3Mxxotpa8f:OVDqrQXLY7VOLXZ
MD5 SHA1 SHA512 SSDEEP

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i0s.exe

Path C:\Users\Admin\AppData\Roaming\i0s.exe
Size 880KB
SHA256 36ee4cc36b92868bf1c674cacd2cf48eaf5b0fc29fba0e1e9dc13aa920b7ee32
MD5 e5574ec07dff681e049b1bee548cb6ff
SHA1 9dd04c156b94d1e5d4cd01dcd3b8016fd6ceaa32
SHA512 140e15991ead0f38c51683402c72db7dcb97c06384c565fcc5fa1e57b11381e10491be3209e0b239698aaae7e5c20983233c3357030a222874ba4a78ddefb593
SSDEEP 24576:OVDz2rQXLY7+AvX+ahs6vcrDa3Mxxotpa8f:OVDqrQXLY7VOLXZ
MD5 SHA1 SHA512 SSDEEP

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memory/1172-136-0x00000000061E0000-0x0000000006246000-memory.dmp

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memory/1172-132-0x0000000000EA0000-0x0000000000F82000-memory.dmp

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memory/1172-133-0x0000000005D40000-0x0000000005DD2000-memory.dmp

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memory/1172-134-0x0000000001670000-0x000000000170C000-memory.dmp

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memory/1172-135-0x00000000065C0000-0x0000000006B64000-memory.dmp

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memory/3388-141-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/3388-143-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/3388-140-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/3388-139-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/3388-138-0x0000000000400000-0x000000000047E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads