tofsee | 1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63

Analysis

max time kernel
145s
max time network
118s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
12-08-2024 18:49

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General

Target

1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe
Size

12.5MB
MD5

f7be204dbf642a2f941919e2b4a848bd
SHA1

fb8d491e289ade656b8cf8df5d6a5d37315f1e85
SHA256

1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63
SHA512

6e64281a73083da6bbbcbc901d2753826f680e60d58d08cf687aa3dbe440756c35794e333f7e72ce75c2bd9c5399edc8da317bef354ece192ea23d0cc811017a
SSDEEP

6144:2+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:2+r1IeSXMXc7LlxWV4Ug97GZ+ej

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\joocjcki = "0"	svchost.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2840	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\joocjcki\ImagePath = "C:\\Windows\\SysWOW64\\joocjcki\\ieyekmev.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2232	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2196	ieyekmev.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2196 set thread context of 2232	2196	ieyekmev.exe	42

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2260	sc.exe
2764	sc.exe
2868	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 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	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ieyekmev.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1880 wrote to memory of 2400	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	31
PID 1880 wrote to memory of 2400	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	31
PID 1880 wrote to memory of 2400	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	31
PID 1880 wrote to memory of 2400	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	31
PID 1880 wrote to memory of 1888	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	33
PID 1880 wrote to memory of 1888	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	33
PID 1880 wrote to memory of 1888	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	33
PID 1880 wrote to memory of 1888	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	33
PID 1880 wrote to memory of 2260	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	35
PID 1880 wrote to memory of 2260	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	35
PID 1880 wrote to memory of 2260	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	35
PID 1880 wrote to memory of 2260	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	35
PID 1880 wrote to memory of 2764	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	37
PID 1880 wrote to memory of 2764	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	37
PID 1880 wrote to memory of 2764	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	37
PID 1880 wrote to memory of 2764	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	37
PID 1880 wrote to memory of 2868	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	39
PID 1880 wrote to memory of 2868	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	39
PID 1880 wrote to memory of 2868	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	39
PID 1880 wrote to memory of 2868	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	39
PID 2196 wrote to memory of 2232	2196	ieyekmev.exe	42
PID 2196 wrote to memory of 2232	2196	ieyekmev.exe	42
PID 2196 wrote to memory of 2232	2196	ieyekmev.exe	42
PID 2196 wrote to memory of 2232	2196	ieyekmev.exe	42
PID 2196 wrote to memory of 2232	2196	ieyekmev.exe	42
PID 2196 wrote to memory of 2232	2196	ieyekmev.exe	42
PID 1880 wrote to memory of 2840	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	43
PID 1880 wrote to memory of 2840	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	43
PID 1880 wrote to memory of 2840	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	43
PID 1880 wrote to memory of 2840	1880	1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe	43

C:\Users\Admin\AppData\Local\Temp\1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe
"C:\Users\Admin\AppData\Local\Temp\1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1880
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\joocjcki\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ieyekmev.exe" C:\Windows\SysWOW64\joocjcki\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1888
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create joocjcki binPath= "C:\Windows\SysWOW64\joocjcki\ieyekmev.exe /d\"C:\Users\Admin\AppData\Local\Temp\1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2260
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description joocjcki "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start joocjcki
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2840

C:\Windows\SysWOW64\joocjcki\ieyekmev.exe
C:\Windows\SysWOW64\joocjcki\ieyekmev.exe /d"C:\Users\Admin\AppData\Local\Temp\1a1d04df45b475a2eb017dbf36a273faa561ef379185d7764c696157142c4a63.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ieyekmev.exe

Filesize
13.0MB

MD5
42f2af9cbb2ec3d299d76a7e4a2093ce

SHA1
db20b8143840f76dbad1b2b391a66cc97c4bf02f

SHA256
0a679e488693bf8e7715023b09d5ae8b2abe75ae126a9f2b5a732dbf753bdb71

SHA512
799836cbeb75ab6d5d4068a7bfc9b8c686e9327e48d6dde8ca36b658d5ef25e526848700e292b4b9ff6885acf7ccd89aa44585ce686967988d8a3e4ef8c13b92

Download Submit
memory/1880-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1880-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/1880-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/1880-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1880-15-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/2196-11-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2232-10-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download
memory/2232-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2232-7-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download
memory/2232-16-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download
memory/2232-17-0x00000000000A0000-0x00000000000B5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads