tofsee | 8ce486ceb12f06bb549a6d2ee456e0805f5019e4a35313bce08c6f36b7608177

Analysis

max time kernel
149s
max time network
117s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
30/08/2024, 22:50

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General

Target
2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe
Size 14.9MB
Sample240830-2spaps1emk
SHA256 8ce486ceb12f06bb549a6d2ee456e0805f5019e4a35313bce08c6f36b7608177
MD5 72eacd8c0200a968c6a409622545fc23
SHA1 79b47393103c7dc3a936e159fcc04f305214ffe6
SHA512 4cc3b990608ff68677d1cf4db332fb0e48df030d4af900038c1445d51f52eeeb50025818a8b82ee54ce434cc69de5cbfcba4d9ccb62c424d98c2ad40c1050dc4
SSDEEP 6144:G+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:G+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\kwbargbi = "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

pid	Process
2912	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\kwbargbi\ImagePath = "C:\\Windows\\SysWOW64\\kwbargbi\\dfaricjc.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2364	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
296	dfaricjc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 296 set thread context of 2364	296	dfaricjc.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2316	sc.exe
2916	sc.exe
2784	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 queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key opened	\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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dfaricjc.exe
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	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.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 30 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 3008	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	30
PID 628 wrote to memory of 3008	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	30
PID 628 wrote to memory of 3008	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	30
PID 628 wrote to memory of 3008	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	30
PID 628 wrote to memory of 1784	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	32
PID 628 wrote to memory of 1784	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	32
PID 628 wrote to memory of 1784	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	32
PID 628 wrote to memory of 1784	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	32
PID 628 wrote to memory of 2316	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	34
PID 628 wrote to memory of 2316	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	34
PID 628 wrote to memory of 2316	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	34
PID 628 wrote to memory of 2316	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	34
PID 628 wrote to memory of 2916	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	36
PID 628 wrote to memory of 2916	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	36
PID 628 wrote to memory of 2916	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	36
PID 628 wrote to memory of 2916	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	36
PID 628 wrote to memory of 2784	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	38
PID 628 wrote to memory of 2784	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	38
PID 628 wrote to memory of 2784	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	38
PID 628 wrote to memory of 2784	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	38
PID 296 wrote to memory of 2364	296	dfaricjc.exe	41
PID 296 wrote to memory of 2364	296	dfaricjc.exe	41
PID 296 wrote to memory of 2364	296	dfaricjc.exe	41
PID 296 wrote to memory of 2364	296	dfaricjc.exe	41
PID 296 wrote to memory of 2364	296	dfaricjc.exe	41
PID 296 wrote to memory of 2364	296	dfaricjc.exe	41
PID 628 wrote to memory of 2912	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	42
PID 628 wrote to memory of 2912	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	42
PID 628 wrote to memory of 2912	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	42
PID 628 wrote to memory of 2912	628	2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kwbargbi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3008
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dfaricjc.exe" C:\Windows\SysWOW64\kwbargbi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kwbargbi binPath= "C:\Windows\SysWOW64\kwbargbi\dfaricjc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kwbargbi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kwbargbi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2784
- 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:2912

C:\Windows\SysWOW64\kwbargbi\dfaricjc.exe
C:\Windows\SysWOW64\kwbargbi\dfaricjc.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-08-30_72eacd8c0200a968c6a409622545fc23_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:296
- 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:2364

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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dfaricjc.exe

Path C:\Users\Admin\AppData\Local\Temp\dfaricjc.exe
Size 13.0MB
SHA256 9e28544ff3df937db1973d722b2162b8e8158aee234e537563287652567160bb
MD5 df03e9b89b407af88ae04c6f006b52f5
SHA1 29a75eac5cd2e67b9d10b057c35c4a5be66249d3
SHA512 d543141d06f3e3adeca3df1ba28f8e395fdc08fd468dd04673d7ed9fa36610381c2299d6fc21094f1412819e24919d2e7cb4cea693c15105f2fe7bcb381c62eb
SSDEEP 6144:z+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:z+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

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memory/296-11-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/628-1-0x0000000000230000-0x0000000000330000-memory.dmp

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memory/628-2-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/628-14-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/628-13-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/2364-10-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2364-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2364-7-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2364-15-0x0000000000080000-0x0000000000095000-memory.dmp

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memory/2364-16-0x0000000000080000-0x0000000000095000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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