tofsee | 2364fe2171a548f445d8fd35b0d13c6107fef86c78427c04eb625acd80663125

Analysis

max time kernel
143s
max time network
124s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
28-11-2024 11:55

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General

Target

2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe
Size

13.1MB
MD5

6697ace66a8bbebee54ec3ccfdc544bb
SHA1

7d1394713123831c4e6ca86cc43dd244e11374df
SHA256

2364fe2171a548f445d8fd35b0d13c6107fef86c78427c04eb625acd80663125
SHA512

b4552d787a25727829c0d31c841df37957059442e2a185c870109d71e20d3680b1e48a23b885956e08ee1accb8835ac04e2c5bad51c34bb3c610acd37e405fb1
SSDEEP

6144:HyXxZTquqxpXAdbbiFyKq3nUOcWfMMMMMMMbt:HyXzN8pXAdbbyyZtZfMMMMMMMb

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

Processes:

svchost.exe

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\gzwjzksy = "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

Processes:

netsh.exe

pid	Process
2772	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

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

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
2700	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

gwcvweud.exe

pid	Process
2876	gwcvweud.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

gwcvweud.exe

description	pid	Process	procid_target
PID 2876 set thread context of 2700	2876	gwcvweud.exe	44

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2356	sc.exe
2240	sc.exe
2852	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

Processes:

netsh.exe

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

Processes:

2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exegwcvweud.exesvchost.exenetsh.execmd.execmd.exesc.exesc.exesc.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gwcvweud.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exegwcvweud.exe

description	pid	Process	procid_target
PID 2076 wrote to memory of 3068	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	30
PID 2076 wrote to memory of 3068	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	30
PID 2076 wrote to memory of 3068	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	30
PID 2076 wrote to memory of 3068	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	30
PID 2076 wrote to memory of 2324	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	32
PID 2076 wrote to memory of 2324	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	32
PID 2076 wrote to memory of 2324	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	32
PID 2076 wrote to memory of 2324	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	32
PID 2076 wrote to memory of 2356	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	34
PID 2076 wrote to memory of 2356	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	34
PID 2076 wrote to memory of 2356	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	34
PID 2076 wrote to memory of 2356	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	34
PID 2076 wrote to memory of 2240	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	37
PID 2076 wrote to memory of 2240	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	37
PID 2076 wrote to memory of 2240	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	37
PID 2076 wrote to memory of 2240	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	37
PID 2076 wrote to memory of 2852	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	39
PID 2076 wrote to memory of 2852	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	39
PID 2076 wrote to memory of 2852	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	39
PID 2076 wrote to memory of 2852	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	39
PID 2076 wrote to memory of 2772	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	42
PID 2076 wrote to memory of 2772	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	42
PID 2076 wrote to memory of 2772	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	42
PID 2076 wrote to memory of 2772	2076	2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe	42
PID 2876 wrote to memory of 2700	2876	gwcvweud.exe	44
PID 2876 wrote to memory of 2700	2876	gwcvweud.exe	44
PID 2876 wrote to memory of 2700	2876	gwcvweud.exe	44
PID 2876 wrote to memory of 2700	2876	gwcvweud.exe	44
PID 2876 wrote to memory of 2700	2876	gwcvweud.exe	44
PID 2876 wrote to memory of 2700	2876	gwcvweud.exe	44

C:\Users\Admin\AppData\Local\Temp\2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gzwjzksy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gwcvweud.exe" C:\Windows\SysWOW64\gzwjzksy\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2324
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gzwjzksy binPath= "C:\Windows\SysWOW64\gzwjzksy\gwcvweud.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gzwjzksy "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2240
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gzwjzksy
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- 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:2772

C:\Windows\SysWOW64\gzwjzksy\gwcvweud.exe
C:\Windows\SysWOW64\gzwjzksy\gwcvweud.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-28_6697ace66a8bbebee54ec3ccfdc544bb_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- 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:2700

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\gwcvweud.exe

Filesize
13.4MB

MD5
e7c0bb2cb0335975b9b04174b33c1732

SHA1
6b73302fd47270a9d6874ec8daf1d915dbc727d7

SHA256
4c834a8c79ae3d6748bd61737dec5504491da448c7cf005f5cd8dd586e71f930

SHA512
6d191c93ffcf5c14729fa4e2df2071080f7b889a1da240479f57b6c3ef4ba6a2df47c09b2c73ee9e03967b7cfb742f67c1ce52c224effdb1a08cf1900d71c622

Download Submit
memory/2076-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2076-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2076-2-0x0000000000240000-0x0000000000253000-memory.dmp

Filesize
76KB

Download
memory/2076-7-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download
memory/2076-8-0x0000000000240000-0x0000000000253000-memory.dmp

Filesize
76KB

Download
memory/2076-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/2076-9-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/2700-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2700-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2700-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2700-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2700-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2876-17-0x0000000000400000-0x0000000000481000-memory.dmp

Filesize
516KB

Download