tofsee | d322561afeb8e4953a33970d44b4d6df00479d61c6b8eed3cb6be8a7e7ef57e3

General

Target

2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe
Size

10.7MB
MD5

f7e37203241990cb2daf5a06e0ac5b9c
SHA1

5887dc7c0997f274dc130d29a1fbdff2191a958c
SHA256

d322561afeb8e4953a33970d44b4d6df00479d61c6b8eed3cb6be8a7e7ef57e3
SHA512

cc3d27268fbc85c1af01023f3e5071bd01c40235006af28f2eca524108d2099a8195726c820f9facfcf1d562d760a866917e1b53f9a3924bfb0555e6c5b716b4
SSDEEP

6144:fLQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQQ:ETYe+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
2780	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\frzndkau\ImagePath = "C:\\Windows\\SysWOW64\\frzndkau\\eefqlmks.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe

Deletes itself 1 IoCs

pid	Process
2596	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2628	eefqlmks.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2628 set thread context of 2596	2628	eefqlmks.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4928	sc.exe
2184	sc.exe
656	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
4412	4200	WerFault.exe	82
2036	2628	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	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eefqlmks.exe
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	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 4200 wrote to memory of 116	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	83
PID 4200 wrote to memory of 116	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	83
PID 4200 wrote to memory of 116	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	83
PID 4200 wrote to memory of 3148	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	85
PID 4200 wrote to memory of 3148	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	85
PID 4200 wrote to memory of 3148	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	85
PID 4200 wrote to memory of 4928	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	87
PID 4200 wrote to memory of 4928	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	87
PID 4200 wrote to memory of 4928	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	87
PID 4200 wrote to memory of 2184	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	89
PID 4200 wrote to memory of 2184	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	89
PID 4200 wrote to memory of 2184	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	89
PID 4200 wrote to memory of 656	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	92
PID 4200 wrote to memory of 656	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	92
PID 4200 wrote to memory of 656	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	92
PID 4200 wrote to memory of 2780	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	95
PID 4200 wrote to memory of 2780	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	95
PID 4200 wrote to memory of 2780	4200	2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe	95
PID 2628 wrote to memory of 2596	2628	eefqlmks.exe	100
PID 2628 wrote to memory of 2596	2628	eefqlmks.exe	100
PID 2628 wrote to memory of 2596	2628	eefqlmks.exe	100
PID 2628 wrote to memory of 2596	2628	eefqlmks.exe	100
PID 2628 wrote to memory of 2596	2628	eefqlmks.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4200
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\frzndkau\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eefqlmks.exe" C:\Windows\SysWOW64\frzndkau\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3148
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create frzndkau binPath= "C:\Windows\SysWOW64\frzndkau\eefqlmks.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description frzndkau "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start frzndkau
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:656
- 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:2780
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4200 -s 1184
  2⤵
  - Program crash
  PID:4412

C:\Windows\SysWOW64\frzndkau\eefqlmks.exe
C:\Windows\SysWOW64\frzndkau\eefqlmks.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-13_f7e37203241990cb2daf5a06e0ac5b9c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2628 -s 512
  2⤵
  - Program crash
  PID:2036

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4200 -ip 4200
1⤵
PID:4092

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2628 -ip 2628
1⤵
PID:5112

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\eefqlmks.exe

Filesize
11.6MB

MD5
cd57c05ad8a063d2ee5093c556419ce9

SHA1
af591dfce6d7818a5acf2fe7038d2e219e078a53

SHA256
d7edc788cb8acee74cb0d79fe1fcc46884a028c2acf77417a51fc6d5fdc9eb00

SHA512
12ab4a6cd306b15a1df02638ca87e47bb6f33ae039979e81257ea15d780881a620aa9b238a4df4051cf15db884932fb9687a78a657ebd33f7a99efd2bb1223d2

Download Submit
memory/2596-14-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/2596-22-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/2596-21-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/2596-20-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/2596-11-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/2628-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2628-19-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2628-9-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/2628-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4200-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4200-16-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download
memory/4200-15-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/4200-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download
memory/4200-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4200-2-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads