tofsee | d6b1897866052579df5ab6d4eeac748961ebc9f97dd077fb81dd2f832c0a913c

General

Target

2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe
Size

13.3MB
MD5

049e91393f95c286773971ebcecdaf89
SHA1

a40a8fd1a9e080138d86a76dc09acef57d3abb7c
SHA256

d6b1897866052579df5ab6d4eeac748961ebc9f97dd077fb81dd2f832c0a913c
SHA512

c698f625bce9c18e648d777254c3601da63666e324f87d804298ee39d5466d6c4946dc8a5940bef2a76cf62ebf1c6b8ed7f87998db6fe217f14719f4ad39e830
SSDEEP

24576:WpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttX:aoo

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
788	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\folejsjt\ImagePath = "C:\\Windows\\SysWOW64\\folejsjt\\nemkupwk.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe

Deletes itself 1 IoCs

pid	Process
4104	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3176	nemkupwk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3176 set thread context of 4104	3176	nemkupwk.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3312	sc.exe
1656	sc.exe
2980	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
2560	4496	WerFault.exe	82
1804	3176	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	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nemkupwk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4496 wrote to memory of 3784	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	84
PID 4496 wrote to memory of 3784	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	84
PID 4496 wrote to memory of 3784	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	84
PID 4496 wrote to memory of 4244	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	86
PID 4496 wrote to memory of 4244	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	86
PID 4496 wrote to memory of 4244	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	86
PID 4496 wrote to memory of 3312	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	88
PID 4496 wrote to memory of 3312	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	88
PID 4496 wrote to memory of 3312	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	88
PID 4496 wrote to memory of 1656	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	90
PID 4496 wrote to memory of 1656	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	90
PID 4496 wrote to memory of 1656	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	90
PID 4496 wrote to memory of 2980	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	92
PID 4496 wrote to memory of 2980	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	92
PID 4496 wrote to memory of 2980	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	92
PID 4496 wrote to memory of 788	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	95
PID 4496 wrote to memory of 788	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	95
PID 4496 wrote to memory of 788	4496	2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe	95
PID 3176 wrote to memory of 4104	3176	nemkupwk.exe	101
PID 3176 wrote to memory of 4104	3176	nemkupwk.exe	101
PID 3176 wrote to memory of 4104	3176	nemkupwk.exe	101
PID 3176 wrote to memory of 4104	3176	nemkupwk.exe	101
PID 3176 wrote to memory of 4104	3176	nemkupwk.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\folejsjt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nemkupwk.exe" C:\Windows\SysWOW64\folejsjt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4244
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create folejsjt binPath= "C:\Windows\SysWOW64\folejsjt\nemkupwk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description folejsjt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start folejsjt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2980
- 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:788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4496 -s 572
  2⤵
  - Program crash
  PID:2560

C:\Windows\SysWOW64\folejsjt\nemkupwk.exe
C:\Windows\SysWOW64\folejsjt\nemkupwk.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-19_049e91393f95c286773971ebcecdaf89_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3176
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3176 -s 556
  2⤵
  - Program crash
  PID:1804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4496 -ip 4496
1⤵
PID:3192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 3176 -ip 3176
1⤵
PID:4536

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\nemkupwk.exe

Filesize
10.5MB

MD5
6bf0ca3d8d075bf0e8be0f3ce58d2602

SHA1
ae59b75b0bf338a9c2d7683e02f667311e1b01be

SHA256
0321b336acf5578881fa1cb4ebe016e3a1dd28d1726a92cde9d6c69a3eaf2784

SHA512
b9aa8cb66dbc95146a56e1d1eac78644dc5baf55688fe6c6244109b40705e7413923efd45bce5ac495d7edccf75c0f61d75bec974261c7a58dd53b65ac36e320

Download Submit
memory/3176-8-0x00007FFDAB930000-0x00007FFDABB25000-memory.dmp

Filesize
2.0MB

Download
memory/3176-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4104-9-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/4104-11-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/4104-12-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/4496-1-0x00007FFDAB930000-0x00007FFDABB25000-memory.dmp

Filesize
2.0MB

Download
memory/4496-5-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4496-6-0x00007FFDAB930000-0x00007FFDABB25000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads