tofsee | 542d93c66cdf93aaa6ee3c39eb7b9a406b540b06a977b4e98c9bdd5d11b415f3

General

Target

2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe
Size

13.0MB
MD5

c1d8f60cd816d4a087ce756b9c2ccc80
SHA1

085038db8f60c8c169c1545ae7aa79798af6dba6
SHA256

542d93c66cdf93aaa6ee3c39eb7b9a406b540b06a977b4e98c9bdd5d11b415f3
SHA512

4fd3651e87e2be0405ef0617ea054fa05ac2be696134ba7f041f54171745df2111593fcbf0b74982ac54a0707dde6c118870eaac50adde69d4f7036a5d759f81
SSDEEP

24576:qpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttV:+oo

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
2164	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\tbkjsep\ImagePath = "C:\\Windows\\SysWOW64\\tbkjsep\\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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe

Deletes itself 1 IoCs

pid	Process
940	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4304	jiwymjkc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4304 set thread context of 940	4304	jiwymjkc.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
2660	sc.exe
2296	sc.exe
4540	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4212	4724	WerFault.exe	82
4988	4304	WerFault.exe	99

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	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	jiwymjkc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4724 wrote to memory of 3396	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	83
PID 4724 wrote to memory of 3396	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	83
PID 4724 wrote to memory of 3396	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	83
PID 4724 wrote to memory of 4232	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	87
PID 4724 wrote to memory of 4232	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	87
PID 4724 wrote to memory of 4232	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	87
PID 4724 wrote to memory of 2660	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	89
PID 4724 wrote to memory of 2660	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	89
PID 4724 wrote to memory of 2660	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	89
PID 4724 wrote to memory of 2296	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	95
PID 4724 wrote to memory of 2296	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	95
PID 4724 wrote to memory of 2296	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	95
PID 4724 wrote to memory of 4540	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	97
PID 4724 wrote to memory of 4540	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	97
PID 4724 wrote to memory of 4540	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	97
PID 4724 wrote to memory of 2164	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	100
PID 4724 wrote to memory of 2164	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	100
PID 4724 wrote to memory of 2164	4724	2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe	100
PID 4304 wrote to memory of 940	4304	jiwymjkc.exe	108
PID 4304 wrote to memory of 940	4304	jiwymjkc.exe	108
PID 4304 wrote to memory of 940	4304	jiwymjkc.exe	108
PID 4304 wrote to memory of 940	4304	jiwymjkc.exe	108
PID 4304 wrote to memory of 940	4304	jiwymjkc.exe	108

C:\Users\Admin\AppData\Local\Temp\2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tbkjsep\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jiwymjkc.exe" C:\Windows\SysWOW64\tbkjsep\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tbkjsep binPath= "C:\Windows\SysWOW64\tbkjsep\jiwymjkc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tbkjsep "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2296
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tbkjsep
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4540
- 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:2164
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4724 -s 1036
  2⤵
  - Program crash
  PID:4212

C:\Windows\SysWOW64\tbkjsep\jiwymjkc.exe
C:\Windows\SysWOW64\tbkjsep\jiwymjkc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_c1d8f60cd816d4a087ce756b9c2ccc80_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4304
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4304 -s 528
  2⤵
  - Program crash
  PID:4988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4724 -ip 4724
1⤵
PID:2172

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4304 -ip 4304
1⤵
PID:2440

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
11.8MB

MD5
c0acc439a3a90f80b0a9ec3e4d5a0a3d

SHA1
022a09b93e223f69ca54b4487701aea96d18540a

SHA256
73e7da64f38992eeb315a7b4cc06cc2cb5447607f86bf9c003e256918ff9e3ce

SHA512
823482ae1d4ee19f4f82d80c111baf69f0b4cb4171142978fbbd2379501b77ceb03f336109b9b0608a56c37a8f74b1b0eb7cfe305b84313ad8d8b479aebc14ef

Download Submit
memory/940-14-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/940-17-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/940-16-0x0000000000650000-0x0000000000665000-memory.dmp

Filesize
84KB

Download
memory/4304-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4304-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4304-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4304-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4724-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4724-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4724-1-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/4724-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4724-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4724-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads