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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\cpjovvd = "0"	svchost.exe

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

2740 netsh.exe

pid	process
2740	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\cpjovvd\ImagePath = "C:\\Windows\\SysWOW64\\cpjovvd\\lnizqkrk.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2764 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

lnizqkrk.exe

pid process

2848 lnizqkrk.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

lnizqkrk.exe

description pid process target process

PID 2848 set thread context of 2764 2848 lnizqkrk.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

3016 sc.exe
2700 sc.exe
2748 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2764	svchost.exe

pid	process
2848	lnizqkrk.exe

description	pid	process	target process
PID 2848 set thread context of 2764	2848	lnizqkrk.exe	svchost.exe

pid	process
3016	sc.exe
2700	sc.exe
2748	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:

2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.execmd.execmd.exesc.exelnizqkrk.exesc.exesc.exenetsh.exesvchost.exe

description	ioc	process
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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	lnizqkrk.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 30 IoCs

Processes:

2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exelnizqkrk.exe

description	pid	process	target process
PID 2520 wrote to memory of 2328	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2520 wrote to memory of 2328	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2520 wrote to memory of 2328	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2520 wrote to memory of 2328	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2520 wrote to memory of 2104	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2520 wrote to memory of 2104	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2520 wrote to memory of 2104	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2520 wrote to memory of 2104	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	cmd.exe
PID 2520 wrote to memory of 3016	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 3016	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 3016	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 3016	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 2700	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 2700	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 2700	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 2700	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 2748	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 2748	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 2748	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2520 wrote to memory of 2748	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	sc.exe
PID 2848 wrote to memory of 2764	2848	lnizqkrk.exe	svchost.exe
PID 2848 wrote to memory of 2764	2848	lnizqkrk.exe	svchost.exe
PID 2848 wrote to memory of 2764	2848	lnizqkrk.exe	svchost.exe
PID 2848 wrote to memory of 2764	2848	lnizqkrk.exe	svchost.exe
PID 2848 wrote to memory of 2764	2848	lnizqkrk.exe	svchost.exe
PID 2848 wrote to memory of 2764	2848	lnizqkrk.exe	svchost.exe
PID 2520 wrote to memory of 2740	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	netsh.exe
PID 2520 wrote to memory of 2740	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	netsh.exe
PID 2520 wrote to memory of 2740	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	netsh.exe
PID 2520 wrote to memory of 2740	2520	2024-09-19_ec1febd5bd936215067feeacc23762c0_mafia.exe	netsh.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⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cpjovvd\
2⤵
- System Location Discovery: System Language Discovery
PID:2328

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lnizqkrk.exe" C:\Windows\SysWOW64\cpjovvd\
2⤵
- System Location Discovery: System Language Discovery
PID:2104

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create cpjovvd binPath= "C:\Windows\SysWOW64\cpjovvd\lnizqkrk.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:3016

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description cpjovvd "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2700

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start cpjovvd
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2748

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:2740

C:\Windows\SysWOW64\cpjovvd\lnizqkrk.exe
C:\Windows\SysWOW64\cpjovvd\lnizqkrk.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:2848

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2764

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\lnizqkrk.exe

Filesize
10.0MB

MD5
0b5830fc403efacf6492e62588fe2e3a

SHA1
fdeb8f8b9cea48693c2cbdd08cb04e9ef90c5a8d

SHA256
895e58e998394c5bad05cea208855f3ec100bbe82128cf9dc8aedd9dfa1a6be2

SHA512
a66b328c757b52302a8bddbaa4c26dbbb5a272e128a97db7f5aff9d6e83450fe3f6329f9d57e30324cdefdc53382d7ea7f0826308bea9dc58189fc6a4c792052

Download Submit
memory/2520-1-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/2520-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-15-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/2520-13-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2764-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2764-7-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2764-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2764-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2764-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2848-11-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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