tofsee | ab2150790dc854f0255900e275835b89d75cfa4c204ebeaacd4183babcc8576d

General

Target

2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe
Size

14.4MB
MD5

052e6cb89d1215df489753b31e65d4b2
SHA1

7c538be17cdd5e617dd23034b5018549b9594d39
SHA256

ab2150790dc854f0255900e275835b89d75cfa4c204ebeaacd4183babcc8576d
SHA512

8e7aa3822b4c933717aeb3e54e91eedb9cf0e82da9a888cadb3bbe6516c0287dcd88f63df6772be5963c086dcdf38494484b022e0b6ec5e64c3f7b64eaaca679
SSDEEP

24576:R6WdLQkyQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ4:4WdLQk

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
Tofsee family
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
1396	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\tlzzdxgk\ImagePath = "C:\\Windows\\SysWOW64\\tlzzdxgk\\xjiwhrzt.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe

Deletes itself 1 IoCs

pid	Process
2436	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4632	xjiwhrzt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4632 set thread context of 2436	4632	xjiwhrzt.exe	113

Launches sc.exe 3 IoCs

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

pid	Process
1724	sc.exe
2256	sc.exe
4292	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3056	2348	WerFault.exe	84
3984	4632	WerFault.exe	104

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xjiwhrzt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-15_052e6cb89d1215df489753b31e65d4b2_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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2348 wrote to memory of 1872	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	88
PID 2348 wrote to memory of 1872	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	88
PID 2348 wrote to memory of 1872	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	88
PID 2348 wrote to memory of 4040	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	90
PID 2348 wrote to memory of 4040	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	90
PID 2348 wrote to memory of 4040	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	90
PID 2348 wrote to memory of 1724	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	94
PID 2348 wrote to memory of 1724	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	94
PID 2348 wrote to memory of 1724	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	94
PID 2348 wrote to memory of 2256	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	96
PID 2348 wrote to memory of 2256	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	96
PID 2348 wrote to memory of 2256	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	96
PID 2348 wrote to memory of 4292	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	102
PID 2348 wrote to memory of 4292	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	102
PID 2348 wrote to memory of 4292	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	102
PID 2348 wrote to memory of 1396	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	105
PID 2348 wrote to memory of 1396	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	105
PID 2348 wrote to memory of 1396	2348	2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe	105
PID 4632 wrote to memory of 2436	4632	xjiwhrzt.exe	113
PID 4632 wrote to memory of 2436	4632	xjiwhrzt.exe	113
PID 4632 wrote to memory of 2436	4632	xjiwhrzt.exe	113
PID 4632 wrote to memory of 2436	4632	xjiwhrzt.exe	113
PID 4632 wrote to memory of 2436	4632	xjiwhrzt.exe	113

C:\Users\Admin\AppData\Local\Temp\2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tlzzdxgk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xjiwhrzt.exe" C:\Windows\SysWOW64\tlzzdxgk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tlzzdxgk binPath= "C:\Windows\SysWOW64\tlzzdxgk\xjiwhrzt.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1724
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tlzzdxgk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tlzzdxgk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4292
- 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:1396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2348 -s 1332
  2⤵
  - Program crash
  PID:3056

C:\Windows\SysWOW64\tlzzdxgk\xjiwhrzt.exe
C:\Windows\SysWOW64\tlzzdxgk\xjiwhrzt.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-15_052e6cb89d1215df489753b31e65d4b2_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4632
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4632 -s 528
  2⤵
  - Program crash
  PID:3984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 2348 -ip 2348
1⤵
PID:4400

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4632 -ip 4632
1⤵
PID:2708

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

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\xjiwhrzt.exe

Filesize
13.0MB

MD5
9e17793914f970aa5d8a92ee574d77ce

SHA1
34845c02cacd603b946b0054fac91a5a1023d41a

SHA256
690a2279ef150c7db182e01f86769b7a58b59dc1391be0851c8b22aa7b3e20f1

SHA512
1ac255ec3ba2e29dfab72cd3825fb6ff75ad3fca517aea35271d61e8a960b1e95a035a42afd7bfa499909d2ebde0a186bdffef26c0e4362cf97fafe99aaa3ae1

Download Submit
memory/2348-8-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2348-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2348-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/2348-7-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/2348-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2348-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2436-14-0x0000000000790000-0x00000000007A5000-memory.dmp

Filesize
84KB

Download
memory/2436-16-0x0000000000790000-0x00000000007A5000-memory.dmp

Filesize
84KB

Download
memory/2436-17-0x0000000000790000-0x00000000007A5000-memory.dmp

Filesize
84KB

Download
memory/4632-12-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4632-11-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4632-13-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download
memory/4632-19-0x0000000000400000-0x000000000044F000-memory.dmp

Filesize
316KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads