tofsee | 98ea3d57064e121e454209ef7c15e6571d4d24a8194e635dfe46df99ef56c0f1

General

Target

2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe
Size

12.5MB
MD5

d8af0d10b9e34488660938c793da32bb
SHA1

e62ece930116d75b30401b0212bba86b2bf2b8c7
SHA256

98ea3d57064e121e454209ef7c15e6571d4d24a8194e635dfe46df99ef56c0f1
SHA512

76a82f0e82436ada650b639d6a4e4f6f0a899239888de1950f7c8d03a0c8a67b1ca2b035b2825d0f047cfdbd062651d4bdb3bfc3141e603dc9b876de64b7fd68
SSDEEP

393216:8XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

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
1092	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\nbwrwybm\ImagePath = "C:\\Windows\\SysWOW64\\nbwrwybm\\ayhirncy.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe

Deletes itself 1 IoCs

pid	Process
2112	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
748	ayhirncy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 748 set thread context of 2112	748	ayhirncy.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
3552	sc.exe
1228	sc.exe
2364	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

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	sc.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	ayhirncy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1396 wrote to memory of 3204	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	82
PID 1396 wrote to memory of 3204	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	82
PID 1396 wrote to memory of 3204	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	82
PID 1396 wrote to memory of 640	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	84
PID 1396 wrote to memory of 640	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	84
PID 1396 wrote to memory of 640	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	84
PID 1396 wrote to memory of 3552	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	86
PID 1396 wrote to memory of 3552	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	86
PID 1396 wrote to memory of 3552	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	86
PID 1396 wrote to memory of 1228	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	88
PID 1396 wrote to memory of 1228	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	88
PID 1396 wrote to memory of 1228	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	88
PID 1396 wrote to memory of 2364	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	90
PID 1396 wrote to memory of 2364	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	90
PID 1396 wrote to memory of 2364	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	90
PID 1396 wrote to memory of 1092	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	93
PID 1396 wrote to memory of 1092	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	93
PID 1396 wrote to memory of 1092	1396	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	93
PID 748 wrote to memory of 2112	748	ayhirncy.exe	95
PID 748 wrote to memory of 2112	748	ayhirncy.exe	95
PID 748 wrote to memory of 2112	748	ayhirncy.exe	95
PID 748 wrote to memory of 2112	748	ayhirncy.exe	95
PID 748 wrote to memory of 2112	748	ayhirncy.exe	95

C:\Users\Admin\AppData\Local\Temp\2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nbwrwybm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ayhirncy.exe" C:\Windows\SysWOW64\nbwrwybm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nbwrwybm binPath= "C:\Windows\SysWOW64\nbwrwybm\ayhirncy.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nbwrwybm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nbwrwybm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2364
- 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:1092

C:\Windows\SysWOW64\nbwrwybm\ayhirncy.exe
C:\Windows\SysWOW64\nbwrwybm\ayhirncy.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:748
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2112

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

Loading Replay Monitor...

Downloads

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

Filesize
11.7MB

MD5
d246a8cf986c082f6e46ee89042e1bc7

SHA1
b630e25b0f9f2ad4740b012f29cdedfcb8719622

SHA256
8d882c471a866ba2e97f9e4ef3b72ca5346e0327a84c5eb087240564b7056f5f

SHA512
b81a4f483f2798eb1599a8e72cc13937d27dc93dddaab80a3bd4838c55e0dc60e899aa9d8990f927aa2cb634e82e8f1430502755a8fcbc6c61afade9bf2f0971

Download Submit
memory/748-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/748-19-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/748-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1396-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1396-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1396-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/1396-8-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/1396-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1396-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/2112-13-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/2112-17-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/2112-16-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/2112-20-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download
memory/2112-21-0x0000000000F00000-0x0000000000F15000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads