tofsee | 2bdbcc7f44fd98dd30ccdb2396267ec841f5b33c17b46c87daeed6baaa1f86cc

General

Target

2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe
Size

10.4MB
MD5

8305103a549a75d8a52f571245bce8fe
SHA1

2ea94c7d17665b69c590b856aa87dfd3f5ee58b0
SHA256

2bdbcc7f44fd98dd30ccdb2396267ec841f5b33c17b46c87daeed6baaa1f86cc
SHA512

40e27b74d6939795d03487d168c5e25984e2c8b774470eb0399f269d66c00b826184e2bb11507479a8e4909dd8d9f33ef91bffc4a7d8b7b65c38550dc52bfc2a
SSDEEP

24576:qEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ3:Dfot

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
1116	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\hwlujxye\ImagePath = "C:\\Windows\\SysWOW64\\hwlujxye\\kirsbxmi.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	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe

Deletes itself 1 IoCs

pid	Process
2228	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1196	kirsbxmi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1196 set thread context of 2228	1196	kirsbxmi.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
524	sc.exe
2620	sc.exe
1588	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
3688	3204	WerFault.exe	81
1604	1196	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	svchost.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kirsbxmi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.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 3204 wrote to memory of 3520	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	82
PID 3204 wrote to memory of 3520	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	82
PID 3204 wrote to memory of 3520	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	82
PID 3204 wrote to memory of 864	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	84
PID 3204 wrote to memory of 864	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	84
PID 3204 wrote to memory of 864	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	84
PID 3204 wrote to memory of 2620	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	86
PID 3204 wrote to memory of 2620	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	86
PID 3204 wrote to memory of 2620	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	86
PID 3204 wrote to memory of 1588	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	88
PID 3204 wrote to memory of 1588	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	88
PID 3204 wrote to memory of 1588	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	88
PID 3204 wrote to memory of 524	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	90
PID 3204 wrote to memory of 524	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	90
PID 3204 wrote to memory of 524	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	90
PID 3204 wrote to memory of 1116	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	93
PID 3204 wrote to memory of 1116	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	93
PID 3204 wrote to memory of 1116	3204	2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe	93
PID 1196 wrote to memory of 2228	1196	kirsbxmi.exe	98
PID 1196 wrote to memory of 2228	1196	kirsbxmi.exe	98
PID 1196 wrote to memory of 2228	1196	kirsbxmi.exe	98
PID 1196 wrote to memory of 2228	1196	kirsbxmi.exe	98
PID 1196 wrote to memory of 2228	1196	kirsbxmi.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hwlujxye\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kirsbxmi.exe" C:\Windows\SysWOW64\hwlujxye\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:864
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hwlujxye binPath= "C:\Windows\SysWOW64\hwlujxye\kirsbxmi.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2620
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hwlujxye "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hwlujxye
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:524
- 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:1116
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3204 -s 1364
  2⤵
  - Program crash
  PID:3688

C:\Windows\SysWOW64\hwlujxye\kirsbxmi.exe
C:\Windows\SysWOW64\hwlujxye\kirsbxmi.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_8305103a549a75d8a52f571245bce8fe_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1196 -s 512
  2⤵
  - Program crash
  PID:1604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3204 -ip 3204
1⤵
PID:4300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1196 -ip 1196
1⤵
PID:4368

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\kirsbxmi.exe

Filesize
14.0MB

MD5
0f5cde624283d31e64928370b51c9737

SHA1
ca803d8da5d4dbd0a0d3ea08a7f4c02eba980afa

SHA256
c69a0f00537a461b4d9f8a01dcd2bc77d14b9548136fe7349e252bbae15ebe00

SHA512
db9b93fb236fb0ccf62354d18fbebaee744b67c95c276445338b140d19b821be6043d30e4911de7c852fb773bf148a0dde95998383df0d4174c8082711c38e60

Download Submit
memory/1196-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1196-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1196-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1196-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2228-14-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2228-16-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/2228-17-0x0000000000110000-0x0000000000125000-memory.dmp

Filesize
84KB

Download
memory/3204-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3204-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3204-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3204-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3204-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3204-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads