tofsee | fb761c1ac886be7d6131a7dacfa8e451f93237096dbe6071f8496eeab4cc58a2

General

Target

2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe
Size

14.0MB
MD5

ec1febd5bd936215067feeacc23762c0
SHA1

4355162cff1556d4041817303fa522576dcd83fc
SHA256

fb761c1ac886be7d6131a7dacfa8e451f93237096dbe6071f8496eeab4cc58a2
SHA512

123002ab121277d036aeb4a7cbbd82c459cc08db2dd6602491a99dc74fac1358879d0b138d3ec17186796849d2cf657851d5be7dbc26c9a585fdc5509ec594d6
SSDEEP

6144:s+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:s+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

4824 netsh.exe

pid	process
4824	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\rwvthnrp\ImagePath = "C:\\Windows\\SysWOW64\\rwvthnrp\\tovsrokl.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:

2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2228 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tovsrokl.exe

pid process

4872 tovsrokl.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tovsrokl.exe

description pid process target process

PID 4872 set thread context of 2228 4872 tovsrokl.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

4148 sc.exe
4972 sc.exe
2992 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2228	svchost.exe

pid	process
4872	tovsrokl.exe

description	pid	process	target process
PID 4872 set thread context of 2228	4872	tovsrokl.exe	svchost.exe

pid	process
4148	sc.exe
4972	sc.exe
2992	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\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:

cmd.exenetsh.exetovsrokl.exesvchost.exe2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.execmd.exesc.exesc.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tovsrokl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-19_ec1febd5bd936215067feeacc23762c0_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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exetovsrokl.exe

description	pid	process	target process
PID 2124 wrote to memory of 3476	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2124 wrote to memory of 3476	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2124 wrote to memory of 3476	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2124 wrote to memory of 3044	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2124 wrote to memory of 3044	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2124 wrote to memory of 3044	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2124 wrote to memory of 4148	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2124 wrote to memory of 4148	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2124 wrote to memory of 4148	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2124 wrote to memory of 4972	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2124 wrote to memory of 4972	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2124 wrote to memory of 4972	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2124 wrote to memory of 2992	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2124 wrote to memory of 2992	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2124 wrote to memory of 2992	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2124 wrote to memory of 4824	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	netsh.exe
PID 2124 wrote to memory of 4824	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	netsh.exe
PID 2124 wrote to memory of 4824	2124	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	netsh.exe
PID 4872 wrote to memory of 2228	4872	tovsrokl.exe	svchost.exe
PID 4872 wrote to memory of 2228	4872	tovsrokl.exe	svchost.exe
PID 4872 wrote to memory of 2228	4872	tovsrokl.exe	svchost.exe
PID 4872 wrote to memory of 2228	4872	tovsrokl.exe	svchost.exe
PID 4872 wrote to memory of 2228	4872	tovsrokl.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2124

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rwvthnrp\
2⤵
- System Location Discovery: System Language Discovery
PID:3476

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tovsrokl.exe" C:\Windows\SysWOW64\rwvthnrp\
2⤵
- System Location Discovery: System Language Discovery
PID:3044

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rwvthnrp binPath= "C:\Windows\SysWOW64\rwvthnrp\tovsrokl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4148

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rwvthnrp "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:4972

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rwvthnrp
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2992

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:4824

C:\Windows\SysWOW64\rwvthnrp\tovsrokl.exe
C:\Windows\SysWOW64\rwvthnrp\tovsrokl.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4872

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2228

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4252,i,11251706013556949551,5157034131170452377,262144 --variations-seed-version --mojo-platform-channel-handle=4352 /prefetch:8
1⤵
PID:2976

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\tovsrokl.exe

Filesize
13.5MB

MD5
3f097b20a601e3f0eca2a1b15be02735

SHA1
00e471c4423bbd4b5677fe84df4fab19ff369e29

SHA256
41b0e97334342d3759a028bb35b3351587f496bd547f26503cf22e2f2dda6308

SHA512
aed892a8ca78a51ecba0c9c010f8696ebb9855463d6ba81463c63fd70978412b23d586154e23e232c396f77559d8d939aec840eb74d81f4b0833adb978b33d94

Download Submit
memory/2124-1-0x0000000000750000-0x0000000000850000-memory.dmp

Filesize
1024KB

Download
memory/2124-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2124-6-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2124-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2228-16-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/2228-11-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/2228-17-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/2228-18-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/2228-19-0x0000000000C20000-0x0000000000C35000-memory.dmp

Filesize
84KB

Download
memory/4872-10-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4872-9-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4872-15-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads