tofsee | a60f03d551fd71fc52fc8bd2483a6c6f20bb7ab187958c1983c1a946edb2c478

General

Target

2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe
Size

14.5MB
MD5

88f01df779e44b11a5c92de6ab31f26a
SHA1

d1b06f61901b428b6ad5e8c78cf348722e88daf6
SHA256

a60f03d551fd71fc52fc8bd2483a6c6f20bb7ab187958c1983c1a946edb2c478
SHA512

c2555bf098dbfb72173093361eea38cbf0893bbf2d82292ef52d796c5b9e991af9c473c67a291489862a0789ec1de95e588ae5ffaf6a748513293b0725bf832b
SSDEEP

24576:eEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ+:3fotQ

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
4248	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\fbvobaea\ImagePath = "C:\\Windows\\SysWOW64\\fbvobaea\\wyrcjrfv.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe

Deletes itself 1 IoCs

pid	Process
4752	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1004	wyrcjrfv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1004 set thread context of 4752	1004	wyrcjrfv.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2428	sc.exe
2196	sc.exe
2104	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
3540	3228	WerFault.exe	83
4640	1004	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wyrcjrfv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3228 wrote to memory of 3748	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	84
PID 3228 wrote to memory of 3748	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	84
PID 3228 wrote to memory of 3748	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	84
PID 3228 wrote to memory of 376	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	86
PID 3228 wrote to memory of 376	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	86
PID 3228 wrote to memory of 376	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	86
PID 3228 wrote to memory of 2428	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	88
PID 3228 wrote to memory of 2428	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	88
PID 3228 wrote to memory of 2428	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	88
PID 3228 wrote to memory of 2196	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	90
PID 3228 wrote to memory of 2196	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	90
PID 3228 wrote to memory of 2196	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	90
PID 3228 wrote to memory of 2104	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	92
PID 3228 wrote to memory of 2104	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	92
PID 3228 wrote to memory of 2104	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	92
PID 3228 wrote to memory of 4248	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	95
PID 3228 wrote to memory of 4248	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	95
PID 3228 wrote to memory of 4248	3228	2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe	95
PID 1004 wrote to memory of 4752	1004	wyrcjrfv.exe	100
PID 1004 wrote to memory of 4752	1004	wyrcjrfv.exe	100
PID 1004 wrote to memory of 4752	1004	wyrcjrfv.exe	100
PID 1004 wrote to memory of 4752	1004	wyrcjrfv.exe	100
PID 1004 wrote to memory of 4752	1004	wyrcjrfv.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fbvobaea\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wyrcjrfv.exe" C:\Windows\SysWOW64\fbvobaea\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:376
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fbvobaea binPath= "C:\Windows\SysWOW64\fbvobaea\wyrcjrfv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2428
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fbvobaea "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2196
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fbvobaea
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2104
- 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:4248
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3228 -s 1232
  2⤵
  - Program crash
  PID:3540

C:\Windows\SysWOW64\fbvobaea\wyrcjrfv.exe
C:\Windows\SysWOW64\fbvobaea\wyrcjrfv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_88f01df779e44b11a5c92de6ab31f26a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1004
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4752
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1004 -s 512
  2⤵
  - Program crash
  PID:4640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3228 -ip 3228
1⤵
PID:644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1004 -ip 1004
1⤵
PID:3376

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\wyrcjrfv.exe

Filesize
13.4MB

MD5
71215ee05d37807c1632cf06bb25edfd

SHA1
94114bef4c06fa389c4f477a272b2caa2b0c6bd6

SHA256
05bbc9809f045bee82aeebfb86a563aba18443ea8b33d33228e611c763333f10

SHA512
f58ac1d4733179f6c2a86940a3cbb86e4acced6f40067cd1541e6263eade0e789fc7d9d2c3c1cedfd58c3ad912662feeec7ab22157101f811f659a36560a513b

Download Submit
memory/1004-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1004-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1004-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1004-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3228-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3228-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3228-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3228-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3228-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3228-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download
memory/4752-14-0x0000000001080000-0x0000000001095000-memory.dmp

Filesize
84KB

Download
memory/4752-16-0x0000000001080000-0x0000000001095000-memory.dmp

Filesize
84KB

Download
memory/4752-17-0x0000000001080000-0x0000000001095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads