tofsee | 3741ce9fe249af187edf138e87543844f539fcb9b539d81e97832b44fb7dfe29

Analysis

max time kernel
147s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
02-12-2024 21:27

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General

Target

2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe
Size

13.3MB
MD5

6a78c96bfc6f9c9957e4fc753858e158
SHA1

9f1c1ed1e963110addd477cf2c70e633fb889c3e
SHA256

3741ce9fe249af187edf138e87543844f539fcb9b539d81e97832b44fb7dfe29
SHA512

e195b4e519b87817cc4444dc171414e7d93133c05d1a610235ee4047a18f22620b6b7b88bb4589811054b6c1fab8cf63ffb923dc9500cc1cdb86c44106f5434d
SSDEEP

6144:lXxZs2EcxJ8GD96ySzTVaFRFX53ncNnUUMMMMMMMMb5:lXzuKJ8GD96ySzTcANnQMMMMMMMb

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
Tofsee family
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\vkkrydvr = "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
2296	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\vkkrydvr\ImagePath = "C:\\Windows\\SysWOW64\\vkkrydvr\\vcppsdvq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2844	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2740	vcppsdvq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2740 set thread context of 2844	2740	vcppsdvq.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2380	sc.exe
1272	sc.exe
2836	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.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	vcppsdvq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2268	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	30
PID 2148 wrote to memory of 2268	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	30
PID 2148 wrote to memory of 2268	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	30
PID 2148 wrote to memory of 2268	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	30
PID 2148 wrote to memory of 2352	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	33
PID 2148 wrote to memory of 2352	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	33
PID 2148 wrote to memory of 2352	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	33
PID 2148 wrote to memory of 2352	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	33
PID 2148 wrote to memory of 2380	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	35
PID 2148 wrote to memory of 2380	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	35
PID 2148 wrote to memory of 2380	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	35
PID 2148 wrote to memory of 2380	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	35
PID 2148 wrote to memory of 1272	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	37
PID 2148 wrote to memory of 1272	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	37
PID 2148 wrote to memory of 1272	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	37
PID 2148 wrote to memory of 1272	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	37
PID 2148 wrote to memory of 2836	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	39
PID 2148 wrote to memory of 2836	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	39
PID 2148 wrote to memory of 2836	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	39
PID 2148 wrote to memory of 2836	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	39
PID 2148 wrote to memory of 2296	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	42
PID 2148 wrote to memory of 2296	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	42
PID 2148 wrote to memory of 2296	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	42
PID 2148 wrote to memory of 2296	2148	2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe	42
PID 2740 wrote to memory of 2844	2740	vcppsdvq.exe	44
PID 2740 wrote to memory of 2844	2740	vcppsdvq.exe	44
PID 2740 wrote to memory of 2844	2740	vcppsdvq.exe	44
PID 2740 wrote to memory of 2844	2740	vcppsdvq.exe	44
PID 2740 wrote to memory of 2844	2740	vcppsdvq.exe	44
PID 2740 wrote to memory of 2844	2740	vcppsdvq.exe	44

C:\Users\Admin\AppData\Local\Temp\2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vkkrydvr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2268
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vcppsdvq.exe" C:\Windows\SysWOW64\vkkrydvr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vkkrydvr binPath= "C:\Windows\SysWOW64\vkkrydvr\vcppsdvq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vkkrydvr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1272
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vkkrydvr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- 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:2296

C:\Windows\SysWOW64\vkkrydvr\vcppsdvq.exe
C:\Windows\SysWOW64\vkkrydvr\vcppsdvq.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-02_6a78c96bfc6f9c9957e4fc753858e158_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2740
- 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:2844

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\vcppsdvq.exe

Filesize
14.0MB

MD5
f4a3bcc2ae7c8ee9de18a292f32024a5

SHA1
ef8a2fec518cef2b7d1123211441e3754834ad91

SHA256
bae70c009ca39f2facbdb06c1862143486fb70ac2212b0999db3638f0569f9a9

SHA512
5664a429100c1834b85921100203571389e7b09b369ee3e9a2781f33505b9738dce7fafe934ee51582365d7cde59d56ee4c5c789635b278bbb9c6168a3c9b1c8

Download Submit
memory/2148-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2148-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2148-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2148-10-0x0000000000570000-0x0000000000670000-memory.dmp

Filesize
1024KB

Download
memory/2148-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2148-1-0x0000000000570000-0x0000000000670000-memory.dmp

Filesize
1024KB

Download
memory/2148-7-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2740-18-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2844-12-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2844-15-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2844-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2844-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2844-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads