tofsee | 4de67356791f43cec40212ccad04c7d1bf0a3b74d3aa1a5b904d13fb1750ed77

General

Target

2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe
Size

11.5MB
MD5

301e2706dc1fd67d639f69376a24a320
SHA1

caba62563befc86a8762929a38fdd3f5c346eb48
SHA256

4de67356791f43cec40212ccad04c7d1bf0a3b74d3aa1a5b904d13fb1750ed77
SHA512

06fb8e2a90f93e6068a5d4b9620dc759783d9b6e13f119b63b00706c49b31dcbbe5c7613efedf5c522c11531a1e67970486ff017857a12657b404b18245d86c9
SSDEEP

3072:mLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:POMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
1940	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\coqslbrt\ImagePath = "C:\\Windows\\SysWOW64\\coqslbrt\\neahyxbf.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe

Deletes itself 1 IoCs

pid	Process
3636	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2288	neahyxbf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2288 set thread context of 3636	2288	neahyxbf.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
212	sc.exe
2044	sc.exe
1964	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
4644	684	WerFault.exe	82
1848	2288	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	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.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	neahyxbf.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 684 wrote to memory of 1344	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	83
PID 684 wrote to memory of 1344	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	83
PID 684 wrote to memory of 1344	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	83
PID 684 wrote to memory of 3632	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	86
PID 684 wrote to memory of 3632	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	86
PID 684 wrote to memory of 3632	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	86
PID 684 wrote to memory of 212	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	88
PID 684 wrote to memory of 212	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	88
PID 684 wrote to memory of 212	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	88
PID 684 wrote to memory of 2044	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	90
PID 684 wrote to memory of 2044	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	90
PID 684 wrote to memory of 2044	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	90
PID 684 wrote to memory of 1964	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	92
PID 684 wrote to memory of 1964	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	92
PID 684 wrote to memory of 1964	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	92
PID 684 wrote to memory of 1940	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	95
PID 684 wrote to memory of 1940	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	95
PID 684 wrote to memory of 1940	684	2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe	95
PID 2288 wrote to memory of 3636	2288	neahyxbf.exe	101
PID 2288 wrote to memory of 3636	2288	neahyxbf.exe	101
PID 2288 wrote to memory of 3636	2288	neahyxbf.exe	101
PID 2288 wrote to memory of 3636	2288	neahyxbf.exe	101
PID 2288 wrote to memory of 3636	2288	neahyxbf.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\coqslbrt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\neahyxbf.exe" C:\Windows\SysWOW64\coqslbrt\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3632
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create coqslbrt binPath= "C:\Windows\SysWOW64\coqslbrt\neahyxbf.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description coqslbrt "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start coqslbrt
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1964
- 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:1940
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 684 -s 1216
  2⤵
  - Program crash
  PID:4644

C:\Windows\SysWOW64\coqslbrt\neahyxbf.exe
C:\Windows\SysWOW64\coqslbrt\neahyxbf.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-25_301e2706dc1fd67d639f69376a24a320_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2288
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3636
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2288 -s 516
  2⤵
  - Program crash
  PID:1848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 684 -ip 684
1⤵
PID:4464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2288 -ip 2288
1⤵
PID:4792

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\neahyxbf.exe

Filesize
12.2MB

MD5
6034f33160db89e82bbfb0919d21de7e

SHA1
3e06b4572bf4c1a8f584bab5f13a3c5bf4624951

SHA256
7d4e19575d9988f22d355f12347f0e99563fa8adcc16d7fa9d7c26ae7c76ef7f

SHA512
859393c6bccb46a8c6498962e25d99cc5ea94ca0acf038bbcbd030726dedf7f7ff584505bdd003931e9024c87e9ab3bc8f5fa2e79cee247261bbbd35f8bb5ae3

Download Submit
memory/684-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/684-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/684-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/684-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/684-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/684-1-0x0000000000770000-0x0000000000870000-memory.dmp

Filesize
1024KB

Download
memory/2288-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2288-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2288-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2288-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3636-16-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download
memory/3636-17-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download
memory/3636-14-0x0000000000AE0000-0x0000000000AF5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads