tofsee | f7b0ab8b8145a5455631cfe76a35be69d126989c5db08e879f2b6056eb910141

General

Target

2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe
Size

11.4MB
MD5

315506db2635d8bd616315c99537776a
SHA1

8ec2cd8fd34e0ea5224fa9d233dab9ae3404e22e
SHA256

f7b0ab8b8145a5455631cfe76a35be69d126989c5db08e879f2b6056eb910141
SHA512

4117266d0992acb28d54f5a5e66248d8829ea40b61fe4aca3964fbad600c4af7de2fac577eae665f88f736706c9c32d5cd361b3a353335f480ca5b1727f6a946
SSDEEP

12288:PVbj7zJB99tzBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBv:PJzXd

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
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
1460	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\adhknlsu\ImagePath = "C:\\Windows\\SysWOW64\\adhknlsu\\nvkobzii.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	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe

Deletes itself 1 IoCs

pid	Process
1876	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3716	nvkobzii.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3716 set thread context of 1876	3716	nvkobzii.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
4816	sc.exe
1416	sc.exe
4928	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	svchost.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	nvkobzii.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-10-09_315506db2635d8bd616315c99537776a_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 3092 wrote to memory of 4896	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	86
PID 3092 wrote to memory of 4896	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	86
PID 3092 wrote to memory of 4896	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	86
PID 3092 wrote to memory of 3440	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	88
PID 3092 wrote to memory of 3440	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	88
PID 3092 wrote to memory of 3440	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	88
PID 3092 wrote to memory of 4816	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	90
PID 3092 wrote to memory of 4816	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	90
PID 3092 wrote to memory of 4816	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	90
PID 3092 wrote to memory of 1416	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	92
PID 3092 wrote to memory of 1416	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	92
PID 3092 wrote to memory of 1416	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	92
PID 3092 wrote to memory of 4928	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	94
PID 3092 wrote to memory of 4928	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	94
PID 3092 wrote to memory of 4928	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	94
PID 3092 wrote to memory of 1460	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	97
PID 3092 wrote to memory of 1460	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	97
PID 3092 wrote to memory of 1460	3092	2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe	97
PID 3716 wrote to memory of 1876	3716	nvkobzii.exe	99
PID 3716 wrote to memory of 1876	3716	nvkobzii.exe	99
PID 3716 wrote to memory of 1876	3716	nvkobzii.exe	99
PID 3716 wrote to memory of 1876	3716	nvkobzii.exe	99
PID 3716 wrote to memory of 1876	3716	nvkobzii.exe	99

C:\Users\Admin\AppData\Local\Temp\2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\adhknlsu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nvkobzii.exe" C:\Windows\SysWOW64\adhknlsu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3440
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create adhknlsu binPath= "C:\Windows\SysWOW64\adhknlsu\nvkobzii.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description adhknlsu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start adhknlsu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4928
- 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:1460

C:\Windows\SysWOW64\adhknlsu\nvkobzii.exe
C:\Windows\SysWOW64\adhknlsu\nvkobzii.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-10-09_315506db2635d8bd616315c99537776a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3716
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1876

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\nvkobzii.exe

Filesize
15.0MB

MD5
a67ebc34bcaa14a31ee29115fe19c8e1

SHA1
42e9a7513078d5da5f496c7509ac028ca865e10d

SHA256
e5c8ca9578a8c21e73ce4b42637084ee186e7613b61441719b1ff1e0e42ab674

SHA512
b09c1b28b1ffa667524e43c26b4dfeede154b5358a1b0a0004291665fef037c2646e3342c3413cc7289366b184af75cdd59f1bad1180c09c2c34726c04501dc0

Download Submit
memory/1876-14-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/1876-18-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/1876-16-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/3092-8-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/3092-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3092-1-0x0000000000640000-0x0000000000740000-memory.dmp

Filesize
1024KB

Download
memory/3092-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3092-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3092-2-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/3716-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3716-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3716-13-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3716-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads