toxiceye | b3ccfc4ddc7f6abf0fa7606be8495acd20c23f85ab23c2fa8bfe43e84befa126

Reason

Machine shutdown

General

Target

ChromeUpdate.exe
Size

119KB
MD5

eedc846c4cf322bbcf849a4af793ced5
SHA1

77fa1a6feb62bd77d30be181696802e13524da8d
SHA256

b3ccfc4ddc7f6abf0fa7606be8495acd20c23f85ab23c2fa8bfe43e84befa126
SHA512

6eb5963fa6d4cca6a2de25850cf47064d8ba523223a55048600fce8cadd120487507af50b0fd39c14b20bed3b976bb9510b5699efc7533e540350101c087ba2c
SSDEEP

3072:Y/aazycnfYOgWPyZ9dOpbZqHVQWqzCrAZuuQD:HIsWqndOpb4K

Score

10^/10

toxiceye discovery rat trojan

Malware Config

Extracted

Family

toxiceye

C2

https://api.telegram.org/bot7742822790:AAHkizf3bilCkIqp8NNVcbWObKSVKo8Xifo/sendMessage?chat_id=7053620590

Signatures

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

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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	ChromeUpdate.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	Update.exe

Executes dropped EXE 1 IoCs

pid	Process
2352	Update.exe

Enumerates processes with tasklist 1 TTPs 1 IoCs

discovery

Process Discovery

T1057

pid	Process
4244	tasklist.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2416	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
4712	schtasks.exe
4924	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2352	Update.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2352	Update.exe
2352	Update.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2928	ChromeUpdate.exe
Token: SeDebugPrivilege	4244	tasklist.exe
Token: SeDebugPrivilege	2352	Update.exe
Token: SeDebugPrivilege	2352	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2352	Update.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2928 wrote to memory of 4712	2928	ChromeUpdate.exe	85
PID 2928 wrote to memory of 4712	2928	ChromeUpdate.exe	85
PID 2928 wrote to memory of 1628	2928	ChromeUpdate.exe	87
PID 2928 wrote to memory of 1628	2928	ChromeUpdate.exe	87
PID 1628 wrote to memory of 4244	1628	cmd.exe	90
PID 1628 wrote to memory of 4244	1628	cmd.exe	90
PID 1628 wrote to memory of 1900	1628	cmd.exe	91
PID 1628 wrote to memory of 1900	1628	cmd.exe	91
PID 1628 wrote to memory of 2416	1628	cmd.exe	92
PID 1628 wrote to memory of 2416	1628	cmd.exe	92
PID 1628 wrote to memory of 2352	1628	cmd.exe	93
PID 1628 wrote to memory of 2352	1628	cmd.exe	93
PID 2352 wrote to memory of 4924	2352	Update.exe	95
PID 2352 wrote to memory of 4924	2352	Update.exe	95

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\ChromeUpdate.exe
"C:\Users\Admin\AppData\Local\Temp\ChromeUpdate.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2928
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Update\Update.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4712
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmpA950.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmpA950.tmp.bat
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1628
- - C:\Windows\system32\tasklist.exe
    Tasklist /fi "PID eq 2928"
    3⤵
    - Enumerates processes with tasklist
    - Suspicious use of AdjustPrivilegeToken
    PID:4244
- - C:\Windows\system32\find.exe
    find ":"
    3⤵
    PID:1900
- - C:\Windows\system32\timeout.exe
    Timeout /T 1 /Nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2416
- - C:\Users\Update\Update.exe
    "Update.exe"
    3⤵
    - 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:2352
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /sc ONLOGON /RL HIGHEST /tn "Chrome Update" /tr "C:\Users\Update\Update.exe"
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:4924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Process Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA950.tmp.bat

Filesize
190B

MD5
f4d08beeeeddc3bbddfa2466586b9f1f

SHA1
28d513c657eea39a6ef2de336325535f4422fdc1

SHA256
8e80009d84e107abd02a26a46b25ffd0589075d665185c1f117463855f9625bb

SHA512
6be8f25a6aaa81c67fa2d8bb5199564b045fd224346e1d0ff836c355cc14d657406d0faf212153a6dbed981d89be079e8567ca1026cb0ea8a8ec106cfc0a03b5

Download Submit
C:\Users\Update\Update.exe

Filesize
119KB

MD5
eedc846c4cf322bbcf849a4af793ced5

SHA1
77fa1a6feb62bd77d30be181696802e13524da8d

SHA256
b3ccfc4ddc7f6abf0fa7606be8495acd20c23f85ab23c2fa8bfe43e84befa126

SHA512
6eb5963fa6d4cca6a2de25850cf47064d8ba523223a55048600fce8cadd120487507af50b0fd39c14b20bed3b976bb9510b5699efc7533e540350101c087ba2c

Download Submit
memory/2928-0-0x00007FF81EA33000-0x00007FF81EA35000-memory.dmp

Filesize
8KB

Download
memory/2928-1-0x000001EB876A0000-0x000001EB876C4000-memory.dmp

Filesize
144KB

Download
memory/2928-2-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

Filesize
10.8MB

Download
memory/2928-6-0x00007FF81EA30000-0x00007FF81F4F1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads