tofsee | 883cc9bf50bf97f0328766207a93f19f3bba89a18a4799414e483dd8356ceeac

Analysis

max time kernel
145s
max time network
122s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
03/02/2025, 21:13

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General

Target

2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe
Size

12.2MB
MD5

7cf8ec2969bb20da7965ea75c471f824
SHA1

adffd7dbf8606465218beb8cec9062b142719f6b
SHA256

883cc9bf50bf97f0328766207a93f19f3bba89a18a4799414e483dd8356ceeac
SHA512

1dcc26bb097ef87713512bfab1ca4993b636e0d49a46150e199446aad168c7a3a7010298ebf8a541de0a18114a82f6ca254db82ba413cbbe075d2a8794039799
SSDEEP

393216:JXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:

Score

10^/10

tofsee defense_evasion discovery 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
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

defense_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\jcuuipgz = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
480	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\jcuuipgz\ImagePath = "C:\\Windows\\SysWOW64\\jcuuipgz\\rmqiyjlj.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2176	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2740	rmqiyjlj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2740 set thread context of 2176	2740	rmqiyjlj.exe	41

Launches sc.exe 3 IoCs

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

pid	Process
2696	sc.exe
2836	sc.exe
2680	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rmqiyjlj.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 2676	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	30
PID 2924 wrote to memory of 2676	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	30
PID 2924 wrote to memory of 2676	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	30
PID 2924 wrote to memory of 2676	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	30
PID 2924 wrote to memory of 2956	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	32
PID 2924 wrote to memory of 2956	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	32
PID 2924 wrote to memory of 2956	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	32
PID 2924 wrote to memory of 2956	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	32
PID 2924 wrote to memory of 2696	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	34
PID 2924 wrote to memory of 2696	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	34
PID 2924 wrote to memory of 2696	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	34
PID 2924 wrote to memory of 2696	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	34
PID 2924 wrote to memory of 2836	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	36
PID 2924 wrote to memory of 2836	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	36
PID 2924 wrote to memory of 2836	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	36
PID 2924 wrote to memory of 2836	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	36
PID 2924 wrote to memory of 2680	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	38
PID 2924 wrote to memory of 2680	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	38
PID 2924 wrote to memory of 2680	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	38
PID 2924 wrote to memory of 2680	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	38
PID 2740 wrote to memory of 2176	2740	rmqiyjlj.exe	41
PID 2740 wrote to memory of 2176	2740	rmqiyjlj.exe	41
PID 2740 wrote to memory of 2176	2740	rmqiyjlj.exe	41
PID 2740 wrote to memory of 2176	2740	rmqiyjlj.exe	41
PID 2740 wrote to memory of 2176	2740	rmqiyjlj.exe	41
PID 2740 wrote to memory of 2176	2740	rmqiyjlj.exe	41
PID 2924 wrote to memory of 480	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	42
PID 2924 wrote to memory of 480	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	42
PID 2924 wrote to memory of 480	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	42
PID 2924 wrote to memory of 480	2924	2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe	42

C:\Users\Admin\AppData\Local\Temp\2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jcuuipgz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rmqiyjlj.exe" C:\Windows\SysWOW64\jcuuipgz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2956
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jcuuipgz binPath= "C:\Windows\SysWOW64\jcuuipgz\rmqiyjlj.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jcuuipgz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jcuuipgz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2680
- 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:480

C:\Windows\SysWOW64\jcuuipgz\rmqiyjlj.exe
C:\Windows\SysWOW64\jcuuipgz\rmqiyjlj.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-03_7cf8ec2969bb20da7965ea75c471f824_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2740
- 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:2176

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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Downloads

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

Filesize
10.1MB

MD5
e6dc909e302296a0678c6a4f90d3b4c0

SHA1
0d5dc626e22a0cfa400bd334f655eccee5392a52

SHA256
b584823fdaf59e66fa2255c106826150af7a8a014a577573e0046ee43cccb93f

SHA512
2cc3e37c26830fd2a891e1c6f38122d2f1cfe24c6fca6936d0e43a6ab1510adae193d33bef30f018f3fdfca62cfa460856f0fd4d65ff163a9bbe887bec6601e5

Download Submit
memory/2176-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2176-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2176-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2176-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2176-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2740-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2924-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2924-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2924-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/2924-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2924-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2924-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads