tofsee | bdc9e29f60050c116a263f1b183fd1f15c268e21a29ab43546cc9d1e40e66ab3

General

Target

2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe
Size

11.0MB
MD5

08074404f8b31d0e87a7463ad0b8971d
SHA1

6233da81ed9883318a02d5a87fcfcf52e3617cd9
SHA256

bdc9e29f60050c116a263f1b183fd1f15c268e21a29ab43546cc9d1e40e66ab3
SHA512

c02e3363a74a8bee633135005208305c6140b71d5a6f2994f408c80e840ce277a47d6df4de42b2a82dd235c4a4cf6fa7716e52e32ef9796c5d7e8ccb23dabbb8
SSDEEP

24576:L6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ4:GWdLQk

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
2356	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\jdnklcxi\ImagePath = "C:\\Windows\\SysWOW64\\jdnklcxi\\ultrbwdr.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe

Deletes itself 1 IoCs

pid	Process
2828	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4828	ultrbwdr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4828 set thread context of 2828	4828	ultrbwdr.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4852	sc.exe
1116	sc.exe
5068	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
916	940	WerFault.exe	81
2428	4828	WerFault.exe	92

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ultrbwdr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 940 wrote to memory of 2604	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	82
PID 940 wrote to memory of 2604	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	82
PID 940 wrote to memory of 2604	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	82
PID 940 wrote to memory of 1028	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	84
PID 940 wrote to memory of 1028	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	84
PID 940 wrote to memory of 1028	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	84
PID 940 wrote to memory of 4852	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	86
PID 940 wrote to memory of 4852	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	86
PID 940 wrote to memory of 4852	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	86
PID 940 wrote to memory of 1116	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	88
PID 940 wrote to memory of 1116	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	88
PID 940 wrote to memory of 1116	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	88
PID 940 wrote to memory of 5068	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	90
PID 940 wrote to memory of 5068	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	90
PID 940 wrote to memory of 5068	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	90
PID 940 wrote to memory of 2356	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	93
PID 940 wrote to memory of 2356	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	93
PID 940 wrote to memory of 2356	940	2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe	93
PID 4828 wrote to memory of 2828	4828	ultrbwdr.exe	98
PID 4828 wrote to memory of 2828	4828	ultrbwdr.exe	98
PID 4828 wrote to memory of 2828	4828	ultrbwdr.exe	98
PID 4828 wrote to memory of 2828	4828	ultrbwdr.exe	98
PID 4828 wrote to memory of 2828	4828	ultrbwdr.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jdnklcxi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2604
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ultrbwdr.exe" C:\Windows\SysWOW64\jdnklcxi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jdnklcxi binPath= "C:\Windows\SysWOW64\jdnklcxi\ultrbwdr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jdnklcxi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jdnklcxi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5068
- 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:2356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 940 -s 1244
  2⤵
  - Program crash
  PID:916

C:\Windows\SysWOW64\jdnklcxi\ultrbwdr.exe
C:\Windows\SysWOW64\jdnklcxi\ultrbwdr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_08074404f8b31d0e87a7463ad0b8971d_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4828
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2828
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4828 -s 508
  2⤵
  - Program crash
  PID:2428

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 940 -ip 940
1⤵
PID:2108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4828 -ip 4828
1⤵
PID:4972

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\ultrbwdr.exe

Filesize
11.1MB

MD5
50d6822b6f55ade2f6995138f8dc42db

SHA1
c5c8682b4620595c1d633872b1f363cafa8b58ab

SHA256
0852ff7b52a647186815954302d622d2e87defc09658406a8d64b40a3ffaa98f

SHA512
84007a78817353fdab11aec06cb2e37a94ae5001edd8ee17197601ec6377b534752a40090800c6e9768910819e986e19c4451e14b86976bcab18bc7685410c30

Download Submit
memory/940-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/940-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/940-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/940-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/940-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/940-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download
memory/2828-14-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/2828-16-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/2828-17-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/4828-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4828-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4828-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4828-19-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads