tofsee | e05b97b6d54a7c0bb15a7eb843a41e50a23330367ec06bc96053389c3c8807b4

General

Target

2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe
Size

10.8MB
MD5

a115c374f85cd330e596e28fb19c58d5
SHA1

3cf1a9e97085f77e1ef564695c7f05acf6c92444
SHA256

e05b97b6d54a7c0bb15a7eb843a41e50a23330367ec06bc96053389c3c8807b4
SHA512

1b089f00086825fef8076246c9a74aefc9125fa2d6d4102d4005ac1cf93e7a9dedc878db654f3bf93cd8f5d0abd078e47c9852906799b957b1a8daf408a624bd
SSDEEP

6144:RLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQ1:yTYe+D2jFu+iZoUFhAz

Score

10^/10

tofsee discovery evasion 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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
448	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\vtyrmbbr\ImagePath = "C:\\Windows\\SysWOW64\\vtyrmbbr\\tkgnedhl.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe

Deletes itself 1 IoCs

pid	Process
3832	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2552	tkgnedhl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2552 set thread context of 3832	2552	tkgnedhl.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1308	sc.exe
1712	sc.exe
2976	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4940	4616	WerFault.exe	82
3560	2552	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-13_a115c374f85cd330e596e28fb19c58d5_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	tkgnedhl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4616 wrote to memory of 1564	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	83
PID 4616 wrote to memory of 1564	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	83
PID 4616 wrote to memory of 1564	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	83
PID 4616 wrote to memory of 4064	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	85
PID 4616 wrote to memory of 4064	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	85
PID 4616 wrote to memory of 4064	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	85
PID 4616 wrote to memory of 1712	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	87
PID 4616 wrote to memory of 1712	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	87
PID 4616 wrote to memory of 1712	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	87
PID 4616 wrote to memory of 2976	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	89
PID 4616 wrote to memory of 2976	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	89
PID 4616 wrote to memory of 2976	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	89
PID 4616 wrote to memory of 1308	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	92
PID 4616 wrote to memory of 1308	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	92
PID 4616 wrote to memory of 1308	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	92
PID 4616 wrote to memory of 448	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	95
PID 4616 wrote to memory of 448	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	95
PID 4616 wrote to memory of 448	4616	2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe	95
PID 2552 wrote to memory of 3832	2552	tkgnedhl.exe	98
PID 2552 wrote to memory of 3832	2552	tkgnedhl.exe	98
PID 2552 wrote to memory of 3832	2552	tkgnedhl.exe	98
PID 2552 wrote to memory of 3832	2552	tkgnedhl.exe	98
PID 2552 wrote to memory of 3832	2552	tkgnedhl.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vtyrmbbr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1564
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tkgnedhl.exe" C:\Windows\SysWOW64\vtyrmbbr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4064
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vtyrmbbr binPath= "C:\Windows\SysWOW64\vtyrmbbr\tkgnedhl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vtyrmbbr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vtyrmbbr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1308
- 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:448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4616 -s 1036
  2⤵
  - Program crash
  PID:4940

C:\Windows\SysWOW64\vtyrmbbr\tkgnedhl.exe
C:\Windows\SysWOW64\vtyrmbbr\tkgnedhl.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-13_a115c374f85cd330e596e28fb19c58d5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2552
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2552 -s 512
  2⤵
  - Program crash
  PID:3560

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4616 -ip 4616
1⤵
PID:2600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2552 -ip 2552
1⤵
PID:2332

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

Replay Monitor

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Downloads

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

Filesize
11.1MB

MD5
b507d5594cac8da238f40a3ae8d7c6ee

SHA1
fdb9be9f6649e7f619c3b0f2db8834f13ecc55a0

SHA256
2d0bf8ad5c849cb427ce6bacc9635033e2e7375a807df102bc97f53ec3b70d64

SHA512
cee414b0a3f51482a5442c7f10b66d43b4739f7ea5ad76b73606ab381181dd7764c1e16c71ae239b86af2610e473335ac9429bfb6d88d496cec58b945d05efc9

Download Submit
memory/2552-14-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2552-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3832-12-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/3832-9-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/3832-18-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/3832-19-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/3832-20-0x0000000000BA0000-0x0000000000BB5000-memory.dmp

Filesize
84KB

Download
memory/4616-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4616-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/4616-2-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/4616-16-0x0000000000510000-0x0000000000523000-memory.dmp

Filesize
76KB

Download
memory/4616-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4616-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads