toxiceye | 3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
05-12-2024 09:52

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General

Target

3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe
Size

584KB
MD5

001ed9b78e44a5545679286e3872ebc4
SHA1

11a7fa8453ec8a594200b66d889aaf3d3f6a132a
SHA256

3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1
SHA512

68ed219c2660d2a2904e2f7c69f378eeac657e11d9d57345de3f0c025ccd03a77a0e66bb095849e17ef9f7abc7a8b6f83822789e12cb02c9e38d0adc969eb84c
SSDEEP

12288:NY4Sjc5JLsNiN5pa3pnISrX+t4eLMd18Sb1sDkwtkn4nQp6WIoD:NJAc79zpaZnISdeLa8Sb1AA4neDD

Score

10^/10

toxiceye discovery rat trojan

Malware Config

Extracted

Family

toxiceye

https://api.telegram.org/bot6614924384:AAFfRfKSXv_nYZghPcfGxWb5r0pZZqztlKU/sendMessage?chat_id=5006597517

Signatures

ToxicEye
ToxicEye is a trojan written in C#.
rat trojan toxiceye
Toxiceye family
toxiceye

Checks computer location settings 2 TTPs 5 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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	crss.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	crss.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	System.exe

Executes dropped EXE 3 IoCs

pid	Process
2936	System.exe
5024	crss.exe
1492	crss.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs

Web Service

T1102

flow	ioc
19	raw.githubusercontent.com

Drops file in Windows directory 13 IoCs

description	ioc	Process
File created	C:\Windows\win.bat	3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240614281	System.exe
File created	C:\Windows\1.vbs	System.exe
File created	C:\Windows\crss.exe	System.exe
File created	C:\Windows\Sodium.dll	crss.exe
File opened for modification	C:\Windows\crss.exe	System.exe
File created	C:\Windows\libsodium.dll	crss.exe
File created	C:\Windows\bookmarks.txt	crss.exe
File created	C:\Windows\__tmp_rar_sfx_access_check_240613500	3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe
File created	C:\Windows\System.exe	3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe
File opened for modification	C:\Windows\System.exe	3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe
File opened for modification	C:\Windows\win.bat	3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe
File opened for modification	C:\Windows\1.vbs	System.exe

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 5 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	System.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000_Classes\Local Settings	System.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2536	schtasks.exe
1184	schtasks.exe
3048	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
5024	crss.exe
1492	crss.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5024	crss.exe
5024	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe
1492	crss.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5024	crss.exe
Token: SeDebugPrivilege	1492	crss.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5024	crss.exe
1492	crss.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4196 wrote to memory of 2432	4196	3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe	82
PID 4196 wrote to memory of 2432	4196	3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe	82
PID 4196 wrote to memory of 2432	4196	3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe	82
PID 2432 wrote to memory of 2536	2432	cmd.exe	85
PID 2432 wrote to memory of 2536	2432	cmd.exe	85
PID 2432 wrote to memory of 2536	2432	cmd.exe	85
PID 2432 wrote to memory of 2936	2432	cmd.exe	86
PID 2432 wrote to memory of 2936	2432	cmd.exe	86
PID 2432 wrote to memory of 2936	2432	cmd.exe	86
PID 2936 wrote to memory of 3600	2936	System.exe	87
PID 2936 wrote to memory of 3600	2936	System.exe	87
PID 2936 wrote to memory of 3600	2936	System.exe	87
PID 3600 wrote to memory of 5024	3600	WScript.exe	88
PID 3600 wrote to memory of 5024	3600	WScript.exe	88
PID 5024 wrote to memory of 1184	5024	crss.exe	90
PID 5024 wrote to memory of 1184	5024	crss.exe	90
PID 3600 wrote to memory of 1492	3600	WScript.exe	92
PID 3600 wrote to memory of 1492	3600	WScript.exe	92
PID 1492 wrote to memory of 3048	1492	crss.exe	94
PID 1492 wrote to memory of 3048	1492	crss.exe	94

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe
"C:\Users\Admin\AppData\Local\Temp\3181d1dd7eca8b6f8998ddbff6379ef5d8ece3e7a60d5838f4d099d4524b03e1.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4196
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Windows\win.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2432
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /Create /tn "MyApp" /tr "\"C:\Windows\system.exe"" /sc ONSTART /ru SYSTEM
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2536
- - C:\Windows\System.exe
    system.exe
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:2936
  - - C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Windows\1.vbs"
      4⤵
      Checks computer location settings
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3600
    - - C:\Windows\crss.exe
        
        "C:\Windows\crss.exe"
        5⤵
        Checks computer location settings
        Executes dropped EXE
        Drops file in Windows directory
        Suspicious behavior: AddClipboardFormatListener
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:5024
      - C:\Windows\System32\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "yandex" /tr "C:\Users\ToxicEye\rat.exe"
        6⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:1184
    - - C:\Windows\crss.exe
        
        "C:\Windows\crss.exe"
        5⤵
        Checks computer location settings
        Executes dropped EXE
        Suspicious behavior: AddClipboardFormatListener
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        Suspicious use of WriteProcessMemory
        
        PID:1492
      - C:\Windows\System32\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "yandex" /tr "C:\Users\ToxicEye\rat.exe"
        6⤵
        Scheduled Task/Job: Scheduled Task
        
        PID:3048

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\crss.exe.log

Filesize
1KB

MD5
381b3c83bff8b73b7f7405c966f2f747

SHA1
b1f298a082275932dc4129c29518f2c1002e312b

SHA256
13941fe4f1c6775a0ed2893353578b26d47a072447727d38e307fcb997c82545

SHA512
22d7599258c697ebe28d0875e8a32b340175829790cace33e8a065565c6eb1c81ff864f9ef6904aac67ca32045111a4808db1ff521fd7c90b7473070bdbff852

Download Submit
C:\Windows\1.vbs

Filesize
123B

MD5
31aab08a0e1733b8196172d5901e7517

SHA1
cb4092011eebab5c9d3bb2e8a4b79c4111b50ff4

SHA256
3c7d4f1aa35d091d73fad7bc1e70112fc88e9f6e6445d8da34effcde67d3e6b8

SHA512
c3452c4f0f1eb1f9c5abb45b73523c6d48635653ec491202c548454aee48d06560ecac13e34c288ca078df47867ca424e3d699f31abe68500e7cb555f5252784

Download Submit
C:\Windows\System.exe

Filesize
403KB

MD5
c9285b00b99565bdf3a6c04c518f6299

SHA1
d0e5c114019d6ef5211c7d7384d7b0ac5ab4f62b

SHA256
8fa065e4ed2a8ebb457326eafddc6e4f715baeb60e2da39f212d25e6281c6171

SHA512
b0554ec39fad010fb66e65832b9407ba3eee63d9e3fa414fc339712e486bbced6103393990fae783c8ac236b5a4f06e6dea28e2bb105b574eeb7f08a7d082bb0

Download Submit
C:\Windows\crss.exe

Filesize
119KB

MD5
b8853b3517287fc33fce3bf78d2fd693

SHA1
3c20e9c59a8653862c0caf43272353447a458a1f

SHA256
581449c5fa2f3adc3e263aeb030accd55465713baecff297fbafb915a2df2fdb

SHA512
206189ac7614eb9a312c312810a060494c4121bebad34692de8e2b5de5db36c144bc4266be278799f0061b829b5c7e1c191bb18aadcf505737ef19936bab718a

Download Submit
C:\Windows\win.bat

Filesize
129B

MD5
ec573f06f672b120d6af7289e81c8381

SHA1
3e067592aeab1201a1bf0ded92808591894ef9df

SHA256
3932a21385c1e8bda0961f3d360342972abff3345d20a30dabd9b6d157172a18

SHA512
89fb52aa29faa73f9e156412392e2dc62e95f4e3d4e711e557ef6e1519412262dd05119dc8f8d90f322e9deb80017f44f9fe8ef9fffae883f691caeb5228a90e

Download Submit
memory/5024-19-0x0000019E25D00000-0x0000019E25D24000-memory.dmp

Filesize
144KB

Download
memory/5024-22-0x0000019E41980000-0x0000019E4198A000-memory.dmp

Filesize
40KB

Download