tofsee | 97b150d3c7d68e35a8601d95ba0f43ac9b83b61179a3260a29347ba880993ced

Analysis

max time kernel
145s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
30/08/2024, 23:04

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General

Target
2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe
Size 12.3MB
Sample240830-22b2qs1emf
SHA256 97b150d3c7d68e35a8601d95ba0f43ac9b83b61179a3260a29347ba880993ced
MD5 ee64939627d553fe824c36c173282baf
SHA1 aa52d0075d52ed759a0732de76f9116c72d618b5
SHA512 dd50fe0c89f36e8d3c4fa98bbecb0014087da7974c820584f133015a476c00cdd1a31acd75867b7fae77159f5139564c3d3dda00befcecfb5a5c3c7b470cbc3b
SSDEEP 6144:x+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:x+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
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
4068	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\qpdzdazi\ImagePath = "C:\\Windows\\SysWOW64\\qpdzdazi\\bkcbkwar.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-1-5-21-1194130065-3471212556-1656947724-1000\Control Panel\International\Geo\Nation	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe

Deletes itself 1 IoCs

pid	Process
4852	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
768	bkcbkwar.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 768 set thread context of 4852	768	bkcbkwar.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3800	sc.exe
4472	sc.exe
2576	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	2024-08-30_ee64939627d553fe824c36c173282baf_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	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	bkcbkwar.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4308 wrote to memory of 856	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	87
PID 4308 wrote to memory of 856	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	87
PID 4308 wrote to memory of 856	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	87
PID 4308 wrote to memory of 3228	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	89
PID 4308 wrote to memory of 3228	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	89
PID 4308 wrote to memory of 3228	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	89
PID 4308 wrote to memory of 3800	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	91
PID 4308 wrote to memory of 3800	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	91
PID 4308 wrote to memory of 3800	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	91
PID 4308 wrote to memory of 4472	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	93
PID 4308 wrote to memory of 4472	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	93
PID 4308 wrote to memory of 4472	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	93
PID 4308 wrote to memory of 2576	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	95
PID 4308 wrote to memory of 2576	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	95
PID 4308 wrote to memory of 2576	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	95
PID 4308 wrote to memory of 4068	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	98
PID 4308 wrote to memory of 4068	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	98
PID 4308 wrote to memory of 4068	4308	2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe	98
PID 768 wrote to memory of 4852	768	bkcbkwar.exe	100
PID 768 wrote to memory of 4852	768	bkcbkwar.exe	100
PID 768 wrote to memory of 4852	768	bkcbkwar.exe	100
PID 768 wrote to memory of 4852	768	bkcbkwar.exe	100
PID 768 wrote to memory of 4852	768	bkcbkwar.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4308
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qpdzdazi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bkcbkwar.exe" C:\Windows\SysWOW64\qpdzdazi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qpdzdazi binPath= "C:\Windows\SysWOW64\qpdzdazi\bkcbkwar.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qpdzdazi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4472
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qpdzdazi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2576
- 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:4068

C:\Windows\SysWOW64\qpdzdazi\bkcbkwar.exe
C:\Windows\SysWOW64\qpdzdazi\bkcbkwar.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-08-30_ee64939627d553fe824c36c173282baf_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:768
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4852

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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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Downloads

bkcbkwar.exe

Path C:\Users\Admin\AppData\Local\Temp\bkcbkwar.exe
Size 10.3MB
SHA256 f92320ab684976898b832da5b076dd27a53edad2e485d21527aee3992a2d7fa5
MD5 fa29d8d2cc7f86db5f9721657644585f
SHA1 fd183a34a40595bb1e90e6734f4604031910f0de
SHA512 f2f0094973a8008e1607c25a67d172058462e4a8e7c1f7555ff2aba88798d03b6214d9bfdafa66909e6cd8b87b0baade32fd6e5ed139deda2a5c50a6972ad795
SSDEEP 6144:l+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:l+r1IeSXMXc7LlxWV4Ug97GZ+ej
MD5 SHA1 SHA512 SSDEEP

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memory/768-16-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/768-9-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/768-10-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/4308-2-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4308-6-0x0000000000400000-0x000000000051A000-memory.dmp

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memory/4308-7-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4308-1-0x00000000007F0000-0x00000000008F0000-memory.dmp

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memory/4852-11-0x0000000000640000-0x0000000000655000-memory.dmp

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memory/4852-17-0x0000000000640000-0x0000000000655000-memory.dmp

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memory/4852-15-0x0000000000640000-0x0000000000655000-memory.dmp

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memory/4852-18-0x0000000000640000-0x0000000000655000-memory.dmp

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memory/4852-19-0x0000000000640000-0x0000000000655000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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