tofsee | eb4879004ba0ee82d332672f71c085ad7b461d6519e1c59647fc34f03b1c95e8

General

Target

2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe
Size

13.5MB
MD5

02c73729047592a348db8fc95b47ac76
SHA1

005b6c07b0dab2aa80cb7bc7159760a822d0b711
SHA256

eb4879004ba0ee82d332672f71c085ad7b461d6519e1c59647fc34f03b1c95e8
SHA512

65aa1132ba80ba5a30a11a4d83f22787285d5c643a637bec0c0b2def7cb4ec78c402fda4380f33a2f5f540c36d10a8af17b463f115447c4f0c5c6012562993d6
SSDEEP

49152:BqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:BqtYc3

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
4008	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\wgfqbvnm\ImagePath = "C:\\Windows\\SysWOW64\\wgfqbvnm\\jlepwesi.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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe

Deletes itself 1 IoCs

pid	Process
628	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4800	jlepwesi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4800 set thread context of 628	4800	jlepwesi.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3400	sc.exe
4680	sc.exe
4828	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
4020	4396	WerFault.exe	82
1972	4800	WerFault.exe	96

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	2025-02-01_02c73729047592a348db8fc95b47ac76_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	jlepwesi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4396 wrote to memory of 1844	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	86
PID 4396 wrote to memory of 1844	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	86
PID 4396 wrote to memory of 1844	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	86
PID 4396 wrote to memory of 232	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	88
PID 4396 wrote to memory of 232	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	88
PID 4396 wrote to memory of 232	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	88
PID 4396 wrote to memory of 4828	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	90
PID 4396 wrote to memory of 4828	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	90
PID 4396 wrote to memory of 4828	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	90
PID 4396 wrote to memory of 3400	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	92
PID 4396 wrote to memory of 3400	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	92
PID 4396 wrote to memory of 3400	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	92
PID 4396 wrote to memory of 4680	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	94
PID 4396 wrote to memory of 4680	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	94
PID 4396 wrote to memory of 4680	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	94
PID 4800 wrote to memory of 628	4800	jlepwesi.exe	98
PID 4800 wrote to memory of 628	4800	jlepwesi.exe	98
PID 4800 wrote to memory of 628	4800	jlepwesi.exe	98
PID 4396 wrote to memory of 4008	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	97
PID 4396 wrote to memory of 4008	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	97
PID 4396 wrote to memory of 4008	4396	2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe	97
PID 4800 wrote to memory of 628	4800	jlepwesi.exe	98
PID 4800 wrote to memory of 628	4800	jlepwesi.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wgfqbvnm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jlepwesi.exe" C:\Windows\SysWOW64\wgfqbvnm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wgfqbvnm binPath= "C:\Windows\SysWOW64\wgfqbvnm\jlepwesi.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4828
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wgfqbvnm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wgfqbvnm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4680
- 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:4008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4396 -s 1036
  2⤵
  - Program crash
  PID:4020

C:\Windows\SysWOW64\wgfqbvnm\jlepwesi.exe
C:\Windows\SysWOW64\wgfqbvnm\jlepwesi.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_02c73729047592a348db8fc95b47ac76_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4800
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 532
  2⤵
  - Program crash
  PID:1972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4800 -ip 4800
1⤵
PID:4748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4396 -ip 4396
1⤵
PID:4372

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\jlepwesi.exe

Filesize
14.9MB

MD5
8ab2b5c032a15ad7d3f7f9499865c209

SHA1
a5dcb1e5db10e1c6a3960a93a93dd08ebbdf751c

SHA256
788db6a25688e77474bcbe907dba63373b5fd6e2833ab9011619018cd12dc7c9

SHA512
56a9800f2c885975ee1b84df762e1cdafaca7bf25d6c8b2fb0be94ea8122161e9411c3cc753213e0df7aaf5a2d8c3c928d36171034317fb352429f5719d783be

Download Submit
memory/628-8-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download
memory/628-14-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download
memory/628-15-0x0000000000F40000-0x0000000000F55000-memory.dmp

Filesize
84KB

Download
memory/4396-1-0x00000000030D0000-0x00000000031D0000-memory.dmp

Filesize
1024KB

Download
memory/4396-2-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/4396-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4396-12-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/4396-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4396-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4800-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads