tofsee | 77288fcd3e18e83fc6bfcfb138f229bcf224ea580a731ad7da68e48d4efc0c2f

General

Target

2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe
Size

14.5MB
MD5

e1a41009719f24351fdb86cb08327975
SHA1

e926304291d60be6fdc8a5d4fbe912789a576120
SHA256

77288fcd3e18e83fc6bfcfb138f229bcf224ea580a731ad7da68e48d4efc0c2f
SHA512

eac60911b15fec1f4fbb10103091f48c5aacfc7b41378d857c37856f97d1927cae70f5d4bd27e46575f0c2f06a465236a41646908a5841e7a4d5c58c6660ade7
SSDEEP

49152:dqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPy:dqtYc3h

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
2456	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\zufbfwam\ImagePath = "C:\\Windows\\SysWOW64\\zufbfwam\\trabkgvr.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	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe

Deletes itself 1 IoCs

pid	Process
2920	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3060	trabkgvr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3060 set thread context of 2920	3060	trabkgvr.exe	103

Launches sc.exe 3 IoCs

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

pid	Process
2104	sc.exe
2980	sc.exe
5112	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
4148	2500	WerFault.exe	83
588	3060	WerFault.exe	102

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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	trabkgvr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 5020	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	87
PID 2500 wrote to memory of 5020	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	87
PID 2500 wrote to memory of 5020	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	87
PID 2500 wrote to memory of 2020	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	89
PID 2500 wrote to memory of 2020	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	89
PID 2500 wrote to memory of 2020	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	89
PID 2500 wrote to memory of 5112	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	91
PID 2500 wrote to memory of 5112	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	91
PID 2500 wrote to memory of 5112	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	91
PID 2500 wrote to memory of 2104	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	97
PID 2500 wrote to memory of 2104	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	97
PID 2500 wrote to memory of 2104	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	97
PID 2500 wrote to memory of 2980	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	100
PID 2500 wrote to memory of 2980	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	100
PID 2500 wrote to memory of 2980	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	100
PID 3060 wrote to memory of 2920	3060	trabkgvr.exe	103
PID 3060 wrote to memory of 2920	3060	trabkgvr.exe	103
PID 3060 wrote to memory of 2920	3060	trabkgvr.exe	103
PID 3060 wrote to memory of 2920	3060	trabkgvr.exe	103
PID 3060 wrote to memory of 2920	3060	trabkgvr.exe	103
PID 2500 wrote to memory of 2456	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	107
PID 2500 wrote to memory of 2456	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	107
PID 2500 wrote to memory of 2456	2500	2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe	107

C:\Users\Admin\AppData\Local\Temp\2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zufbfwam\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\trabkgvr.exe" C:\Windows\SysWOW64\zufbfwam\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2020
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zufbfwam binPath= "C:\Windows\SysWOW64\zufbfwam\trabkgvr.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5112
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zufbfwam "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2104
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zufbfwam
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2980
- 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:2456
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2500 -s 1036
  2⤵
  - Program crash
  PID:4148

C:\Windows\SysWOW64\zufbfwam\trabkgvr.exe
C:\Windows\SysWOW64\zufbfwam\trabkgvr.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-06_e1a41009719f24351fdb86cb08327975_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3060
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2920
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3060 -s 508
  2⤵
  - Program crash
  PID:588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3060 -ip 3060
1⤵
PID:5008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2500 -ip 2500
1⤵
PID:1520

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\trabkgvr.exe

Filesize
13.2MB

MD5
42576b16f53d00b33acc43a6ee7c1185

SHA1
a2b133ad50ccfc4d5cc1869a2dd28cb7b6ac812a

SHA256
8b388cef1f5d7328a983be59267458af674d5866dcedc063df48efaa4cbc0de3

SHA512
b8ac774c73bb3c7bdf51a0eecda91dfabb5f4a9a31e7a2aab0a4040f6ee827bdeaa670fdb94a732bef56f8caf8bf33b48d8529c7254fc03dd115b5c012e08327

Download Submit
memory/2500-1-0x00000000030D0000-0x00000000031D0000-memory.dmp

Filesize
1024KB

Download
memory/2500-2-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/2500-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2500-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2500-12-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/2500-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/2920-8-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/2920-14-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/2920-15-0x0000000000EC0000-0x0000000000ED5000-memory.dmp

Filesize
84KB

Download
memory/3060-10-0x0000000000400000-0x0000000002DC3000-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