tofsee | adebf698ce7862226c1794aafa272bc8bdd8363ccfb2ed52964912f89f79e61e

General

Target

2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe
Size

14.6MB
MD5

98fa720e04828c3150ee35c8cb30f403
SHA1

d5b7405bd6d33d41b06f12dc8c15dc6abe65db4a
SHA256

adebf698ce7862226c1794aafa272bc8bdd8363ccfb2ed52964912f89f79e61e
SHA512

f0d572dac42f07c94debb447ff084e523dc9e7e7d597ad789f87d0459193db6d3d1e7c20b4afb072ca7bbd54d090524e625ba5f69e30f64ed610699804c3a3b8
SSDEEP

6144:2+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:2+r1IeSXMXc7LlxWV4Ug97GZ+ej

Score

10^/10

tofsee 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

2784 netsh.exe

pid	process
2784	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\fjyqtcma\ImagePath = "C:\\Windows\\SysWOW64\\fjyqtcma\\cldclxbs.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:

2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4356 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

cldclxbs.exe

pid process

3404 cldclxbs.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

cldclxbs.exe

description pid process target process

PID 3404 set thread context of 4356 3404 cldclxbs.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

4668 sc.exe
1168 sc.exe
1760 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4356	svchost.exe

pid	process
3404	cldclxbs.exe

description	pid	process	target process
PID 3404 set thread context of 4356	3404	cldclxbs.exe	svchost.exe

pid	process
4668	sc.exe
1168	sc.exe
1760	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

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.execldclxbs.exe

description	pid	process	target process
PID 2304 wrote to memory of 1556	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	cmd.exe
PID 2304 wrote to memory of 1556	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	cmd.exe
PID 2304 wrote to memory of 1556	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	cmd.exe
PID 2304 wrote to memory of 4744	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	cmd.exe
PID 2304 wrote to memory of 4744	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	cmd.exe
PID 2304 wrote to memory of 4744	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	cmd.exe
PID 2304 wrote to memory of 4668	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	sc.exe
PID 2304 wrote to memory of 4668	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	sc.exe
PID 2304 wrote to memory of 4668	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	sc.exe
PID 2304 wrote to memory of 1168	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	sc.exe
PID 2304 wrote to memory of 1168	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	sc.exe
PID 2304 wrote to memory of 1168	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	sc.exe
PID 2304 wrote to memory of 1760	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	sc.exe
PID 2304 wrote to memory of 1760	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	sc.exe
PID 2304 wrote to memory of 1760	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	sc.exe
PID 2304 wrote to memory of 2784	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	netsh.exe
PID 2304 wrote to memory of 2784	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	netsh.exe
PID 2304 wrote to memory of 2784	2304	2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe	netsh.exe
PID 3404 wrote to memory of 4356	3404	cldclxbs.exe	svchost.exe
PID 3404 wrote to memory of 4356	3404	cldclxbs.exe	svchost.exe
PID 3404 wrote to memory of 4356	3404	cldclxbs.exe	svchost.exe
PID 3404 wrote to memory of 4356	3404	cldclxbs.exe	svchost.exe
PID 3404 wrote to memory of 4356	3404	cldclxbs.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fjyqtcma\
  2⤵
  PID:1556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cldclxbs.exe" C:\Windows\SysWOW64\fjyqtcma\
  2⤵
  PID:4744
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fjyqtcma binPath= "C:\Windows\SysWOW64\fjyqtcma\cldclxbs.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fjyqtcma "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:1168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fjyqtcma
  2⤵
  - Launches sc.exe
  PID:1760
- 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
  PID:2784

C:\Windows\SysWOW64\fjyqtcma\cldclxbs.exe
C:\Windows\SysWOW64\fjyqtcma\cldclxbs.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-06-19_98fa720e04828c3150ee35c8cb30f403_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3404
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4356

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\cldclxbs.exe

Filesize
10.3MB

MD5
0acf7bf9d23da815b504acb5e2b1d0a1

SHA1
dce9a8a7a5ca37e80926d072a5505c8e3b85af76

SHA256
bf0571df4aa61c11d080b85e1b130108a81323c0ac4c7fd5bdb1dd4c36fb9ef9

SHA512
91b88b2d95fbe1e7ae84bd1a2372ef4c62969d9e017a27d86549fd5be28f365ecef1d5278b8f39e914e57917225444853d9682e8554c397ceddf6bb509c72d5c

Download Submit
memory/2304-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/2304-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2304-6-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/2304-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3404-9-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/3404-15-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/3404-10-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4356-11-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download
memory/4356-13-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download
memory/4356-16-0x00000000008E0000-0x00000000008F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads