remcos | 2b305f1f4fa4f5ebe3b32ba17036b1b28febbcfecda7266a39c8d0aa21c12313

Analysis

max time kernel
149s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
31/07/2022, 18:44

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General

Target
SecuriteInfo.com.Trojan.Inject4.38260.21589.exe
Size 866KB
Sample220731-xdfykabfg2
SHA256 2b305f1f4fa4f5ebe3b32ba17036b1b28febbcfecda7266a39c8d0aa21c12313
MD5 40e0ad7247f2f8c810d4693345e6e0a2
SHA1 e88c6d910c167ab1f9581771f91d91f29c346ea0
SHA512 4442b1e2fe2b9647cfd6c9f07b7cfe783c744e01fee4f3617bb27ad36b1a60abc3ab8a7cf18ffd83b1539057cb2c79f628fbdf0424fe8724f9b701481a407af1
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 2 IoCs

pid	Process
384	i0s.exe
452	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-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Windows\CurrentVersion\Run\	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ios = "\"C:\\Users\\Admin\\AppData\\Roaming\\i0s.exe\""	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe
Key created	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Windows\CurrentVersion\Run\	i0s.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ios = "\"C:\\Users\\Admin\\AppData\\Roaming\\i0s.exe\""	i0s.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1996 set thread context of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 384 set thread context of 452	384	i0s.exe	104

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-1-5-21-2660308776-3705150086-26593515-1000_Classes\Local Settings	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
452	i0s.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 1996 wrote to memory of 2508	1996	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	98
PID 2508 wrote to memory of 1348	2508	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	99
PID 2508 wrote to memory of 1348	2508	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	99
PID 2508 wrote to memory of 1348	2508	SecuriteInfo.com.Trojan.Inject4.38260.21589.exe	99
PID 1348 wrote to memory of 1748	1348	WScript.exe	100
PID 1348 wrote to memory of 1748	1348	WScript.exe	100
PID 1348 wrote to memory of 1748	1348	WScript.exe	100
PID 1748 wrote to memory of 384	1748	cmd.exe	102
PID 1748 wrote to memory of 384	1748	cmd.exe	102
PID 1748 wrote to memory of 384	1748	cmd.exe	102
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104
PID 384 wrote to memory of 452	384	i0s.exe	104

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Inject4.38260.21589.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Inject4.38260.21589.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1996
- C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Inject4.38260.21589.exe
  "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.Inject4.38260.21589.exe"
  2⤵
  - Checks computer location settings
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2508
- - 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:1348
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\i0s.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1748
    - - C:\Users\Admin\AppData\Roaming\i0s.exe
        
        C:\Users\Admin\AppData\Roaming\i0s.exe
        5⤵
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious use of WriteProcessMemory
        
        PID:384
      - C:\Users\Admin\AppData\Roaming\i0s.exe
        
        "C:\Users\Admin\AppData\Roaming\i0s.exe"
        6⤵
        Executes dropped EXE
        Adds Run key to start application
        Suspicious use of SetWindowsHookEx
        
        PID:452

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

Replay Monitor

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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 866KB
SHA256 2b305f1f4fa4f5ebe3b32ba17036b1b28febbcfecda7266a39c8d0aa21c12313
MD5 40e0ad7247f2f8c810d4693345e6e0a2
SHA1 e88c6d910c167ab1f9581771f91d91f29c346ea0
SHA512 4442b1e2fe2b9647cfd6c9f07b7cfe783c744e01fee4f3617bb27ad36b1a60abc3ab8a7cf18ffd83b1539057cb2c79f628fbdf0424fe8724f9b701481a407af1
SSDEEP 12288:Z8w2HjPtGn7veQGJjI8urDIGl9waHkHFpIbqRQ6fRxJOdSxTPUJcUIZ/hQXy:iTtwcJjImGlh4pIbP6ZxJ2cEcUIJH
MD5 SHA1 SHA512 SSDEEP

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i0s.exe

Path C:\Users\Admin\AppData\Roaming\i0s.exe
Size 866KB
SHA256 2b305f1f4fa4f5ebe3b32ba17036b1b28febbcfecda7266a39c8d0aa21c12313
MD5 40e0ad7247f2f8c810d4693345e6e0a2
SHA1 e88c6d910c167ab1f9581771f91d91f29c346ea0
SHA512 4442b1e2fe2b9647cfd6c9f07b7cfe783c744e01fee4f3617bb27ad36b1a60abc3ab8a7cf18ffd83b1539057cb2c79f628fbdf0424fe8724f9b701481a407af1
SSDEEP 12288:Z8w2HjPtGn7veQGJjI8urDIGl9waHkHFpIbqRQ6fRxJOdSxTPUJcUIZ/hQXy:iTtwcJjImGlh4pIbP6ZxJ2cEcUIJH
MD5 SHA1 SHA512 SSDEEP

Submit Download

i0s.exe

Path C:\Users\Admin\AppData\Roaming\i0s.exe
Size 866KB
SHA256 2b305f1f4fa4f5ebe3b32ba17036b1b28febbcfecda7266a39c8d0aa21c12313
MD5 40e0ad7247f2f8c810d4693345e6e0a2
SHA1 e88c6d910c167ab1f9581771f91d91f29c346ea0
SHA512 4442b1e2fe2b9647cfd6c9f07b7cfe783c744e01fee4f3617bb27ad36b1a60abc3ab8a7cf18ffd83b1539057cb2c79f628fbdf0424fe8724f9b701481a407af1
SSDEEP 12288:Z8w2HjPtGn7veQGJjI8urDIGl9waHkHFpIbqRQ6fRxJOdSxTPUJcUIZ/hQXy:iTtwcJjImGlh4pIbP6ZxJ2cEcUIJH
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/452-149-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/452-152-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/452-151-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/452-150-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/1996-130-0x0000000000100000-0x00000000001DE000-memory.dmp

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memory/1996-134-0x00000000054D0000-0x0000000005536000-memory.dmp

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memory/1996-133-0x00000000059A0000-0x0000000005F44000-memory.dmp

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memory/1996-132-0x0000000004F50000-0x0000000004FEC000-memory.dmp

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memory/1996-131-0x0000000004C10000-0x0000000004CA2000-memory.dmp

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memory/2508-140-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/2508-138-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/2508-137-0x0000000000400000-0x000000000047E000-memory.dmp

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memory/2508-136-0x0000000000400000-0x000000000047E000-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