tofsee | c187031a129855f7c175d53ea08fbc3251e4effd126ea02c1e10437e36b7d4f2

General

Target

2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe
Size

11.2MB
MD5

eaf1c52f2fc5ea258111fcae8a188e94
SHA1

b1136f6d9f51748cd885f001d299227be1f8030a
SHA256

c187031a129855f7c175d53ea08fbc3251e4effd126ea02c1e10437e36b7d4f2
SHA512

fa5fbcba150d8286a33e03914e1467db04dee6e4a262f12433abbe8db0302e2c90c666cff6ee413208341b1992e5c4caff35b9db23172fa41d01e6b314bed569
SSDEEP

196608:0yXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:JXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH

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
4336	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\ryrkiuqi\ImagePath = "C:\\Windows\\SysWOW64\\ryrkiuqi\\nzymxhpj.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	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe

Deletes itself 1 IoCs

pid	Process
244	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2576	nzymxhpj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2576 set thread context of 244	2576	nzymxhpj.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
936	sc.exe
3224	sc.exe
5008	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nzymxhpj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4328 wrote to memory of 3916	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	82
PID 4328 wrote to memory of 3916	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	82
PID 4328 wrote to memory of 3916	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	82
PID 4328 wrote to memory of 5016	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	84
PID 4328 wrote to memory of 5016	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	84
PID 4328 wrote to memory of 5016	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	84
PID 4328 wrote to memory of 936	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	86
PID 4328 wrote to memory of 936	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	86
PID 4328 wrote to memory of 936	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	86
PID 4328 wrote to memory of 3224	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	88
PID 4328 wrote to memory of 3224	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	88
PID 4328 wrote to memory of 3224	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	88
PID 4328 wrote to memory of 5008	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	90
PID 4328 wrote to memory of 5008	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	90
PID 4328 wrote to memory of 5008	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	90
PID 2576 wrote to memory of 244	2576	nzymxhpj.exe	93
PID 2576 wrote to memory of 244	2576	nzymxhpj.exe	93
PID 2576 wrote to memory of 244	2576	nzymxhpj.exe	93
PID 2576 wrote to memory of 244	2576	nzymxhpj.exe	93
PID 2576 wrote to memory of 244	2576	nzymxhpj.exe	93
PID 4328 wrote to memory of 4336	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	94
PID 4328 wrote to memory of 4336	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	94
PID 4328 wrote to memory of 4336	4328	2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe	94

C:\Users\Admin\AppData\Local\Temp\2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4328
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ryrkiuqi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nzymxhpj.exe" C:\Windows\SysWOW64\ryrkiuqi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ryrkiuqi binPath= "C:\Windows\SysWOW64\ryrkiuqi\nzymxhpj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:936
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ryrkiuqi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ryrkiuqi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5008
- 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:4336

C:\Windows\SysWOW64\ryrkiuqi\nzymxhpj.exe
C:\Windows\SysWOW64\ryrkiuqi\nzymxhpj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_eaf1c52f2fc5ea258111fcae8a188e94_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2576
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:244

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\nzymxhpj.exe

Filesize
14.3MB

MD5
0e696872f42a5bb83d9903fef2ca54e0

SHA1
016b69cd44b74ab8026c16f5ade31793b8e9f777

SHA256
e2195d865aff053034da925011294028d6d8aeed5bff0802b4e9f42d7fedd33e

SHA512
4188432906de712b1ad5b5d32e7696df8b82bd4d04e40a912f8935eda6db0e850c61bd7c7fc30bd27acc175a52177159166b2ef0fb70f79729358b7cbf018bfb

Download Submit
memory/244-11-0x0000000000BF0000-0x0000000000C05000-memory.dmp

Filesize
84KB

Download
memory/244-22-0x0000000000BF0000-0x0000000000C05000-memory.dmp

Filesize
84KB

Download
memory/244-21-0x0000000000BF0000-0x0000000000C05000-memory.dmp

Filesize
84KB

Download
memory/244-20-0x0000000000BF0000-0x0000000000C05000-memory.dmp

Filesize
84KB

Download
memory/244-14-0x0000000000BF0000-0x0000000000C05000-memory.dmp

Filesize
84KB

Download
memory/2576-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2576-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2576-16-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2576-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4328-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4328-19-0x00000000004D0000-0x00000000004E3000-memory.dmp

Filesize
76KB

Download
memory/4328-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4328-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/4328-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4328-2-0x00000000004D0000-0x00000000004E3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads