tofsee | 125855b740b1777ffecc46e376fba8c12e89daa1ac4d4c64c9df5ecc00380b74

General

Target

2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe
Size

10.8MB
MD5

bc0920bf926ce5afd4b3bddbe164c661
SHA1

02d2615da6e80b0f12c8f5af0059034365a7e7c6
SHA256

125855b740b1777ffecc46e376fba8c12e89daa1ac4d4c64c9df5ecc00380b74
SHA512

56f38c84ff5439fe5301fcbc934f8a0212bb535b1e6d41d5207a2b7ce18713eda482557cfa3bec79f3ee77a2e3153c946234230070e2fae85d3a9ab67b5877b5
SSDEEP

6144:1LQ1p/2p5e+D2jFHO+iZoy6u9FlfrXEz9NQNQNQNQNQNQNQNQNQNQNQNQNQNQNQQ:GTYe+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
3140	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\coxnarna\ImagePath = "C:\\Windows\\SysWOW64\\coxnarna\\jiwymjkc.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe

Deletes itself 1 IoCs

pid	Process
3280	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3376	jiwymjkc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3376 set thread context of 3280	3376	jiwymjkc.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
5008	sc.exe
2472	sc.exe
1332	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
4648	212	WerFault.exe	82
3408	3376	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.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	jiwymjkc.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 212 wrote to memory of 3000	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	83
PID 212 wrote to memory of 3000	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	83
PID 212 wrote to memory of 3000	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	83
PID 212 wrote to memory of 2816	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	85
PID 212 wrote to memory of 2816	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	85
PID 212 wrote to memory of 2816	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	85
PID 212 wrote to memory of 5008	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	87
PID 212 wrote to memory of 5008	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	87
PID 212 wrote to memory of 5008	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	87
PID 212 wrote to memory of 2472	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	89
PID 212 wrote to memory of 2472	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	89
PID 212 wrote to memory of 2472	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	89
PID 212 wrote to memory of 1332	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	92
PID 212 wrote to memory of 1332	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	92
PID 212 wrote to memory of 1332	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	92
PID 212 wrote to memory of 3140	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	95
PID 212 wrote to memory of 3140	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	95
PID 212 wrote to memory of 3140	212	2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe	95
PID 3376 wrote to memory of 3280	3376	jiwymjkc.exe	100
PID 3376 wrote to memory of 3280	3376	jiwymjkc.exe	100
PID 3376 wrote to memory of 3280	3376	jiwymjkc.exe	100
PID 3376 wrote to memory of 3280	3376	jiwymjkc.exe	100
PID 3376 wrote to memory of 3280	3376	jiwymjkc.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\coxnarna\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jiwymjkc.exe" C:\Windows\SysWOW64\coxnarna\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create coxnarna binPath= "C:\Windows\SysWOW64\coxnarna\jiwymjkc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description coxnarna "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start coxnarna
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1332
- 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:3140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 212 -s 724
  2⤵
  - Program crash
  PID:4648

C:\Windows\SysWOW64\coxnarna\jiwymjkc.exe
C:\Windows\SysWOW64\coxnarna\jiwymjkc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-09_bc0920bf926ce5afd4b3bddbe164c661_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3376
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3280
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3376 -s 516
  2⤵
  - Program crash
  PID:3408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 212 -ip 212
1⤵
PID:1848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3376 -ip 3376
1⤵
PID:344

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\jiwymjkc.exe

Filesize
14.2MB

MD5
114a9492c862494db7c17bfb27ecaf36

SHA1
76547c4a6d09e4e1ec9eea2ce75abcc767ec558f

SHA256
332081b60784f17c791cf86beaa34f15f73c0c4456e8b9efc1f04f794f940ff7

SHA512
c116482c1c203bffee714159a02a542c56b29b743edf81bf03fcd43bf4f25a924d3a65ff8976dd128de2cb74239463e442c6631ac8f3b8c67fa91d5228b73d9d

Download Submit
memory/212-18-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/212-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/212-1-0x00000000007D0000-0x00000000008D0000-memory.dmp

Filesize
1024KB

Download
memory/212-17-0x0000000000730000-0x0000000000743000-memory.dmp

Filesize
76KB

Download
memory/212-16-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/212-2-0x0000000000730000-0x0000000000743000-memory.dmp

Filesize
76KB

Download
memory/3280-9-0x0000000000890000-0x00000000008A5000-memory.dmp

Filesize
84KB

Download
memory/3280-14-0x0000000000890000-0x00000000008A5000-memory.dmp

Filesize
84KB

Download
memory/3280-19-0x0000000000890000-0x00000000008A5000-memory.dmp

Filesize
84KB

Download
memory/3280-20-0x0000000000890000-0x00000000008A5000-memory.dmp

Filesize
84KB

Download
memory/3280-21-0x0000000000890000-0x00000000008A5000-memory.dmp

Filesize
84KB

Download
memory/3376-13-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3376-10-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download
memory/3376-8-0x0000000000400000-0x00000000004C1000-memory.dmp

Filesize
772KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads