tofsee | ae1cbbf63e6551dacf902fdbe4a640a6a6dcfa180d185e02a6eeab4c9965db75

General

Target

2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe
Size

10.2MB
MD5

9b7c823ae2126b55d2c42d2d665d4bdc
SHA1

ee5cd33b2668c6a94e2e77750bf5ec88ad6b6856
SHA256

ae1cbbf63e6551dacf902fdbe4a640a6a6dcfa180d185e02a6eeab4c9965db75
SHA512

e2f63157102151a7370c9b6cf5ec1ebe827410539545b7299db59c19b4c12d3fde482078488ea50cd9a0cc55f49ef21eb9c6b004eb43b6af5701916dabea0a71
SSDEEP

49152:MqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:MqtYc3

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
4860	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\xcxnwdyq\ImagePath = "C:\\Windows\\SysWOW64\\xcxnwdyq\\sedrcmuo.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	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe

Deletes itself 1 IoCs

pid	Process
1636	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1560	sedrcmuo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1560 set thread context of 1636	1560	sedrcmuo.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
3876	sc.exe
4548	sc.exe
3524	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
4888	1560	WerFault.exe	92
4084	2440	WerFault.exe	81

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	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sedrcmuo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2440 wrote to memory of 1488	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	82
PID 2440 wrote to memory of 1488	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	82
PID 2440 wrote to memory of 1488	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	82
PID 2440 wrote to memory of 1884	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	84
PID 2440 wrote to memory of 1884	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	84
PID 2440 wrote to memory of 1884	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	84
PID 2440 wrote to memory of 3876	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	86
PID 2440 wrote to memory of 3876	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	86
PID 2440 wrote to memory of 3876	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	86
PID 2440 wrote to memory of 4548	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	88
PID 2440 wrote to memory of 4548	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	88
PID 2440 wrote to memory of 4548	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	88
PID 2440 wrote to memory of 3524	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	90
PID 2440 wrote to memory of 3524	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	90
PID 2440 wrote to memory of 3524	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	90
PID 1560 wrote to memory of 1636	1560	sedrcmuo.exe	93
PID 1560 wrote to memory of 1636	1560	sedrcmuo.exe	93
PID 1560 wrote to memory of 1636	1560	sedrcmuo.exe	93
PID 1560 wrote to memory of 1636	1560	sedrcmuo.exe	93
PID 1560 wrote to memory of 1636	1560	sedrcmuo.exe	93
PID 2440 wrote to memory of 4860	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	97
PID 2440 wrote to memory of 4860	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	97
PID 2440 wrote to memory of 4860	2440	2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2440
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xcxnwdyq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1488
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sedrcmuo.exe" C:\Windows\SysWOW64\xcxnwdyq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xcxnwdyq binPath= "C:\Windows\SysWOW64\xcxnwdyq\sedrcmuo.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3876
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xcxnwdyq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xcxnwdyq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3524
- 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:4860
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2440 -s 1272
  2⤵
  - Program crash
  PID:4084

C:\Windows\SysWOW64\xcxnwdyq\sedrcmuo.exe
C:\Windows\SysWOW64\xcxnwdyq\sedrcmuo.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_9b7c823ae2126b55d2c42d2d665d4bdc_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1560
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1560 -s 528
  2⤵
  - Program crash
  PID:4888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1560 -ip 1560
1⤵
PID:3432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2440 -ip 2440
1⤵
PID:4388

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\sedrcmuo.exe

Filesize
12.2MB

MD5
a712e23df2ef9f64b34ff288eeb0e651

SHA1
e680d7bf54182c5c9d9c252472dc1edfccae9028

SHA256
d1faf8f4db3f9227249286241d67ff442c49964b07bc156533e7374259b1a42b

SHA512
29975f1c9326ee66fc23761d26bf300095b3519c32d3711e32f406551a23fe8a69f1a64a0714964bd29c4dfec1ff1ac6a20f8298e5e1a2646169b3413c80682a

Download Submit
memory/1560-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/1636-8-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/1636-14-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/1636-15-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/2440-1-0x0000000003150000-0x0000000003250000-memory.dmp

Filesize
1024KB

Download
memory/2440-2-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/2440-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2440-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2440-12-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/2440-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads