tofsee | d46421db9e494d84927336c31c562240b2ff081429e02199e9d85e3e050ca033

General

Target

202409246577141f035830a975a4a321fa116d92mafia.exe
Size

10.6MB
MD5

6577141f035830a975a4a321fa116d92
SHA1

2f7c6acd12193bfa417bfa44c9127df92f87c74f
SHA256

d46421db9e494d84927336c31c562240b2ff081429e02199e9d85e3e050ca033
SHA512

34f67c602b41c79db84d82bb26f413691c69f3b4a208ddd395598432c0cca2f39d1abc0ba07a29c96aa3f4a750d4b9adf015d6febe716de4ac4c0e7e93aa0bb0
SSDEEP

6144:E+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:E+r1IeSXMXc7LlxWV4Ug97GZ+ej

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

Processes:

netsh.exe

pid process

4232 netsh.exe

pid	process
4232	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\ucndvnjr\ImagePath = "C:\\Windows\\SysWOW64\\ucndvnjr\\oonteszc.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

Processes:

202409246577141f035830a975a4a321fa116d92mafia.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	202409246577141f035830a975a4a321fa116d92mafia.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4140 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

oonteszc.exe

pid process

4900 oonteszc.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

oonteszc.exe

description pid process target process

PID 4900 set thread context of 4140 4900 oonteszc.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

3044 sc.exe
2188 sc.exe
3504 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4140	svchost.exe

pid	process
4900	oonteszc.exe

description	pid	process	target process
PID 4900 set thread context of 4140	4900	oonteszc.exe	svchost.exe

pid	process
3044	sc.exe
2188	sc.exe
3504	sc.exe

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

Processes:

netsh.exe

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

Processes:

202409246577141f035830a975a4a321fa116d92mafia.exesc.exesc.exeoonteszc.exesvchost.execmd.execmd.exesc.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	202409246577141f035830a975a4a321fa116d92mafia.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	oonteszc.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

202409246577141f035830a975a4a321fa116d92mafia.exeoonteszc.exe

description	pid	process	target process
PID 2376 wrote to memory of 3700	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	cmd.exe
PID 2376 wrote to memory of 3700	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	cmd.exe
PID 2376 wrote to memory of 3700	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	cmd.exe
PID 2376 wrote to memory of 516	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	cmd.exe
PID 2376 wrote to memory of 516	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	cmd.exe
PID 2376 wrote to memory of 516	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	cmd.exe
PID 2376 wrote to memory of 2188	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	sc.exe
PID 2376 wrote to memory of 2188	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	sc.exe
PID 2376 wrote to memory of 2188	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	sc.exe
PID 2376 wrote to memory of 3504	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	sc.exe
PID 2376 wrote to memory of 3504	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	sc.exe
PID 2376 wrote to memory of 3504	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	sc.exe
PID 2376 wrote to memory of 3044	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	sc.exe
PID 2376 wrote to memory of 3044	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	sc.exe
PID 2376 wrote to memory of 3044	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	sc.exe
PID 2376 wrote to memory of 4232	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	netsh.exe
PID 2376 wrote to memory of 4232	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	netsh.exe
PID 2376 wrote to memory of 4232	2376	202409246577141f035830a975a4a321fa116d92mafia.exe	netsh.exe
PID 4900 wrote to memory of 4140	4900	oonteszc.exe	svchost.exe
PID 4900 wrote to memory of 4140	4900	oonteszc.exe	svchost.exe
PID 4900 wrote to memory of 4140	4900	oonteszc.exe	svchost.exe
PID 4900 wrote to memory of 4140	4900	oonteszc.exe	svchost.exe
PID 4900 wrote to memory of 4140	4900	oonteszc.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\202409246577141f035830a975a4a321fa116d92mafia.exe
"C:\Users\Admin\AppData\Local\Temp\202409246577141f035830a975a4a321fa116d92mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ucndvnjr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oonteszc.exe" C:\Windows\SysWOW64\ucndvnjr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ucndvnjr binPath= "C:\Windows\SysWOW64\ucndvnjr\oonteszc.exe /d\"C:\Users\Admin\AppData\Local\Temp\202409246577141f035830a975a4a321fa116d92mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ucndvnjr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ucndvnjr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3044
- 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:4232

C:\Windows\SysWOW64\ucndvnjr\oonteszc.exe
C:\Windows\SysWOW64\ucndvnjr\oonteszc.exe /d"C:\Users\Admin\AppData\Local\Temp\202409246577141f035830a975a4a321fa116d92mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4900
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4140

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\oonteszc.exe

Filesize
10.6MB

MD5
7cbfddc17ea9420d76641cc0f2ba3bd1

SHA1
80db676e4c61d9224b2b64ec643af3fbfc81dfed

SHA256
3b62820269f42c3c99aec793ea9b80f13b91056f99e7b665958722b6abf993c8

SHA512
83ee85828e900c7749be63c341d7bf3f045eb992b3b4625a1f7d56e778dafd22ba354658aeaaea7455619ebd848b4bfcd217a0a36ee6ec4dee258e8ab925eb37

Download Submit
memory/2376-1-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2376-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2376-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2376-6-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4140-17-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/4140-11-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/4140-15-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/4140-18-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/4140-19-0x0000000000BD0000-0x0000000000BE5000-memory.dmp

Filesize
84KB

Download
memory/4900-10-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4900-9-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4900-16-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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