tofsee | 113204d499543435f6256751082b03e43cbfa3e5aaf4ac2ae72791dc1d5b1c4e

General

Target

2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe
Size

14.5MB
MD5

21bab2b2396f9666734d4fa8ecb7c391
SHA1

cc0110f22a0e113277447eeb0977b1fe0f092b42
SHA256

113204d499543435f6256751082b03e43cbfa3e5aaf4ac2ae72791dc1d5b1c4e
SHA512

33b705f9d6465f2a42c7f24976e05142e6e6b8295056a20d3ccc96fd711a6546d14a9c7ca0f1e9d43472002913b498045716db8a76116e5c70adc151803556cf
SSDEEP

24576:i6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQM:rWdLQkW

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2168	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\gbcuvjhc\ImagePath = "C:\\Windows\\SysWOW64\\gbcuvjhc\\pgcjazdh.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe

Deletes itself 1 IoCs

pid	Process
3400	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4124	pgcjazdh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4124 set thread context of 3400	4124	pgcjazdh.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1932	sc.exe
2948	sc.exe
2276	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5028	5076	WerFault.exe	83
2988	4124	WerFault.exe	94

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pgcjazdh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5076 wrote to memory of 3036	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	84
PID 5076 wrote to memory of 3036	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	84
PID 5076 wrote to memory of 3036	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	84
PID 5076 wrote to memory of 3260	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	86
PID 5076 wrote to memory of 3260	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	86
PID 5076 wrote to memory of 3260	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	86
PID 5076 wrote to memory of 2948	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	88
PID 5076 wrote to memory of 2948	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	88
PID 5076 wrote to memory of 2948	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	88
PID 5076 wrote to memory of 2276	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	90
PID 5076 wrote to memory of 2276	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	90
PID 5076 wrote to memory of 2276	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	90
PID 5076 wrote to memory of 1932	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	92
PID 5076 wrote to memory of 1932	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	92
PID 5076 wrote to memory of 1932	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	92
PID 5076 wrote to memory of 2168	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	95
PID 5076 wrote to memory of 2168	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	95
PID 5076 wrote to memory of 2168	5076	2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe	95
PID 4124 wrote to memory of 3400	4124	pgcjazdh.exe	100
PID 4124 wrote to memory of 3400	4124	pgcjazdh.exe	100
PID 4124 wrote to memory of 3400	4124	pgcjazdh.exe	100
PID 4124 wrote to memory of 3400	4124	pgcjazdh.exe	100
PID 4124 wrote to memory of 3400	4124	pgcjazdh.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gbcuvjhc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pgcjazdh.exe" C:\Windows\SysWOW64\gbcuvjhc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3260
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gbcuvjhc binPath= "C:\Windows\SysWOW64\gbcuvjhc\pgcjazdh.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gbcuvjhc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2276
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gbcuvjhc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1932
- 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:2168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5076 -s 1332
  2⤵
  - Program crash
  PID:5028

C:\Windows\SysWOW64\gbcuvjhc\pgcjazdh.exe
C:\Windows\SysWOW64\gbcuvjhc\pgcjazdh.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-07_21bab2b2396f9666734d4fa8ecb7c391_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4124
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4124 -s 516
  2⤵
  - Program crash
  PID:2988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 5076 -ip 5076
1⤵
PID:3096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4124 -ip 4124
1⤵
PID:4820

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
10.8MB

MD5
6988130bb040f1cd5d33e38b1ccbc62c

SHA1
dbffcbf6e50fc6e89cc3f1ee73a1ad54f2ab4049

SHA256
fc4163793f45a74aa70dbfb4ed4c93c94778e184d5e6a4d6840ecebf8440b277

SHA512
e0e466ceae1ecbfd12db14dbc4dc4d80fa027f4b17b48bb9168748ad361c87dcaabe13c658114e3e992f8108dfb8899cd4dad7028aa6d4a89f60b2a3fbb916e3

Download Submit
memory/3400-14-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/3400-17-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/3400-16-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/4124-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4124-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4124-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4124-18-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5076-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/5076-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5076-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/5076-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/5076-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5076-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads