tofsee | cd2c46dd35a7788252e69365bac207bf99fcc9873d09cbb31937369117bfebeb

General

Target

2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe
Size

11.9MB
MD5

70752e5e70811da5dd76e3e6b585c032
SHA1

3964d27309e610482edd1b85f1538e3e5d1f8db7
SHA256

cd2c46dd35a7788252e69365bac207bf99fcc9873d09cbb31937369117bfebeb
SHA512

e6d9432ad8bc63a78752bc37a5d1270c59ca2bf75d5d6e30d4f3a2d5ad53acafa4ccf07c8aa5c56dc2a392e704d15df054077f21588af48a25b5d5c23cc08b3b
SSDEEP

24576:yEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZn:Lfot

Score

10^/10

tofsee defense_evasion discovery 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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
3128	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\cxibwjhp\ImagePath = "C:\\Windows\\SysWOW64\\cxibwjhp\\zlkyjtbv.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-1-5-21-2436272344-4274332273-444425594-1000\Control Panel\International\Geo\Nation	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe

Deletes itself 1 IoCs

pid	Process
4800	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2252	zlkyjtbv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2252 set thread context of 4800	2252	zlkyjtbv.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3008	sc.exe
4852	sc.exe
4608	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
1176	1300	WerFault.exe	80
3204	2252	WerFault.exe	94

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	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zlkyjtbv.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	svchost.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 1300 wrote to memory of 4592	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	84
PID 1300 wrote to memory of 4592	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	84
PID 1300 wrote to memory of 4592	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	84
PID 1300 wrote to memory of 1860	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	86
PID 1300 wrote to memory of 1860	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	86
PID 1300 wrote to memory of 1860	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	86
PID 1300 wrote to memory of 3008	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	88
PID 1300 wrote to memory of 3008	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	88
PID 1300 wrote to memory of 3008	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	88
PID 1300 wrote to memory of 4852	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	90
PID 1300 wrote to memory of 4852	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	90
PID 1300 wrote to memory of 4852	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	90
PID 1300 wrote to memory of 4608	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	92
PID 1300 wrote to memory of 4608	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	92
PID 1300 wrote to memory of 4608	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	92
PID 1300 wrote to memory of 3128	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	95
PID 1300 wrote to memory of 3128	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	95
PID 1300 wrote to memory of 3128	1300	2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe	95
PID 2252 wrote to memory of 4800	2252	zlkyjtbv.exe	100
PID 2252 wrote to memory of 4800	2252	zlkyjtbv.exe	100
PID 2252 wrote to memory of 4800	2252	zlkyjtbv.exe	100
PID 2252 wrote to memory of 4800	2252	zlkyjtbv.exe	100
PID 2252 wrote to memory of 4800	2252	zlkyjtbv.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1300
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cxibwjhp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zlkyjtbv.exe" C:\Windows\SysWOW64\cxibwjhp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1860
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cxibwjhp binPath= "C:\Windows\SysWOW64\cxibwjhp\zlkyjtbv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cxibwjhp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cxibwjhp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4608
- 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:3128
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1300 -s 888
  2⤵
  - Program crash
  PID:1176

C:\Windows\SysWOW64\cxibwjhp\zlkyjtbv.exe
C:\Windows\SysWOW64\cxibwjhp\zlkyjtbv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-29_70752e5e70811da5dd76e3e6b585c032_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4800
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2252 -s 512
  2⤵
  - Program crash
  PID:3204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1300 -ip 1300
1⤵
PID:3032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 2252 -ip 2252
1⤵
PID:2892

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\zlkyjtbv.exe

Filesize
14.6MB

MD5
340e20f5c4dd6964dc893b41c4794ec3

SHA1
73a8010c6fd2760c73766cbe7b6415f13d385191

SHA256
957e0855b07e0ac2fc16bd76892fc88a76d5c50467e026cc34dead160d1122f9

SHA512
3592f6a573de55a650817cee122a2dcc83b7594d4131b6168141eb8b0db8ef064fab407a5ac08b494f44c2afdd5878bb49ad3066e8390271d21ecb70c7063316

Download Submit
memory/1300-8-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/1300-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1300-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/1300-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1300-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1300-1-0x0000000000570000-0x0000000000670000-memory.dmp

Filesize
1024KB

Download
memory/2252-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2252-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2252-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2252-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4800-14-0x0000000000790000-0x00000000007A5000-memory.dmp

Filesize
84KB

Download
memory/4800-16-0x0000000000790000-0x00000000007A5000-memory.dmp

Filesize
84KB

Download
memory/4800-17-0x0000000000790000-0x00000000007A5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads