tofsee | 43acbb2282a9895367b08adc255ae24499f5caf28fb2e8b32a3d0ec8478953c2

General

Target

2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe
Size

12.2MB
MD5

91e95500111f9606c6d8895da8178943
SHA1

fa5ff18dec49823c882e20c48a2b77e59a75d2f4
SHA256

43acbb2282a9895367b08adc255ae24499f5caf28fb2e8b32a3d0ec8478953c2
SHA512

007e8b324600688264be053e2d9fc02fc4b07fec40cec02c743f20d91e2185224f64ecff9324dc1e5b30e472da6ad44fd8c1241cd92ec5c3ca76cb5030dfae2f
SSDEEP

49152:FVdrl/8HAzGCbGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGO:FVdrl/9zG

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
2760	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\vzizcdtl\ImagePath = "C:\\Windows\\SysWOW64\\vzizcdtl\\jeliheab.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe

Deletes itself 1 IoCs

pid	Process
3788	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4716	jeliheab.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4716 set thread context of 3788	4716	jeliheab.exe	111

Launches sc.exe 3 IoCs

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

pid	Process
668	sc.exe
4448	sc.exe
3204	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
4764	4940	WerFault.exe	82
4816	4716	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jeliheab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-11-10_91e95500111f9606c6d8895da8178943_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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 1196	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	88
PID 4940 wrote to memory of 1196	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	88
PID 4940 wrote to memory of 1196	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	88
PID 4940 wrote to memory of 412	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	94
PID 4940 wrote to memory of 412	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	94
PID 4940 wrote to memory of 412	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	94
PID 4940 wrote to memory of 668	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	96
PID 4940 wrote to memory of 668	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	96
PID 4940 wrote to memory of 668	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	96
PID 4940 wrote to memory of 4448	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	98
PID 4940 wrote to memory of 4448	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	98
PID 4940 wrote to memory of 4448	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	98
PID 4940 wrote to memory of 3204	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	100
PID 4940 wrote to memory of 3204	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	100
PID 4940 wrote to memory of 3204	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	100
PID 4940 wrote to memory of 2760	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	103
PID 4940 wrote to memory of 2760	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	103
PID 4940 wrote to memory of 2760	4940	2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe	103
PID 4716 wrote to memory of 3788	4716	jeliheab.exe	111
PID 4716 wrote to memory of 3788	4716	jeliheab.exe	111
PID 4716 wrote to memory of 3788	4716	jeliheab.exe	111
PID 4716 wrote to memory of 3788	4716	jeliheab.exe	111
PID 4716 wrote to memory of 3788	4716	jeliheab.exe	111

C:\Users\Admin\AppData\Local\Temp\2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vzizcdtl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1196
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jeliheab.exe" C:\Windows\SysWOW64\vzizcdtl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:412
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create vzizcdtl binPath= "C:\Windows\SysWOW64\vzizcdtl\jeliheab.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description vzizcdtl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4448
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start vzizcdtl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3204
- 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:2760
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4940 -s 1296
  2⤵
  - Program crash
  PID:4764

C:\Windows\SysWOW64\vzizcdtl\jeliheab.exe
C:\Windows\SysWOW64\vzizcdtl\jeliheab.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-11-10_91e95500111f9606c6d8895da8178943_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4716
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3788
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4716 -s 532
  2⤵
  - Program crash
  PID:4816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4940 -ip 4940
1⤵
PID:4140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4716 -ip 4716
1⤵
PID:1916

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

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
12.2MB

MD5
e7431da4ee6d90a790407c10276aa55f

SHA1
28750b51e324e13e84eb047564726a68f9434c57

SHA256
d3ba5a6f6b40790e8135e1daf2449f725fc8bd64b1de82602b43214d84fb9173

SHA512
558584c135b8f09472ea2c25ec3ba8ae5ef98c7ae17c5bc897e18c21a0539d0c4be822632bd81c19cfe77f3baf03e1a3ba74bf91ed7b160fcd666ef8afc4cb5b

Download Submit
memory/3788-14-0x0000000000E40000-0x0000000000E55000-memory.dmp

Filesize
84KB

Download
memory/3788-17-0x0000000000E40000-0x0000000000E55000-memory.dmp

Filesize
84KB

Download
memory/3788-16-0x0000000000E40000-0x0000000000E55000-memory.dmp

Filesize
84KB

Download
memory/4716-12-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/4716-11-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/4716-13-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/4716-18-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/4940-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4940-8-0x0000000000640000-0x0000000000653000-memory.dmp

Filesize
76KB

Download
memory/4940-1-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download
memory/4940-7-0x0000000000400000-0x0000000000518000-memory.dmp

Filesize
1.1MB

Download
memory/4940-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4940-2-0x0000000000640000-0x0000000000653000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads