tofsee | e9a2cc4b78ea58a60129a46c78598d18a9cfadaeb63f5e869035e5b020a9c22a

General

Target

2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe
Size

10.3MB
MD5

436f3f4351865fdad50a16c2356d2ac2
SHA1

af73c647d938a24548d56c58dfff155c39be087b
SHA256

e9a2cc4b78ea58a60129a46c78598d18a9cfadaeb63f5e869035e5b020a9c22a
SHA512

b40a6af767d646a18790a8567ed5d480b745298888e0f8f783ed43ada2fdd2d7dbfef7a566611d4724daf50a603024d7ee20a9321839b290133b5488fcfba898
SSDEEP

3072:aLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:DOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
1140	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\tgdzeqfk\ImagePath = "C:\\Windows\\SysWOW64\\tgdzeqfk\\xfuyljss.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe

Deletes itself 1 IoCs

pid	Process
4436	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1772	xfuyljss.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1772 set thread context of 4436	1772	xfuyljss.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
848	sc.exe
4468	sc.exe
2624	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
1972	3216	WerFault.exe	82
1752	1772	WerFault.exe	93

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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xfuyljss.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3216 wrote to memory of 4192	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	83
PID 3216 wrote to memory of 4192	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	83
PID 3216 wrote to memory of 4192	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	83
PID 3216 wrote to memory of 2352	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	85
PID 3216 wrote to memory of 2352	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	85
PID 3216 wrote to memory of 2352	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	85
PID 3216 wrote to memory of 848	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	87
PID 3216 wrote to memory of 848	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	87
PID 3216 wrote to memory of 848	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	87
PID 3216 wrote to memory of 4468	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	89
PID 3216 wrote to memory of 4468	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	89
PID 3216 wrote to memory of 4468	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	89
PID 3216 wrote to memory of 2624	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	91
PID 3216 wrote to memory of 2624	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	91
PID 3216 wrote to memory of 2624	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	91
PID 3216 wrote to memory of 1140	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	94
PID 3216 wrote to memory of 1140	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	94
PID 3216 wrote to memory of 1140	3216	2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe	94
PID 1772 wrote to memory of 4436	1772	xfuyljss.exe	100
PID 1772 wrote to memory of 4436	1772	xfuyljss.exe	100
PID 1772 wrote to memory of 4436	1772	xfuyljss.exe	100
PID 1772 wrote to memory of 4436	1772	xfuyljss.exe	100
PID 1772 wrote to memory of 4436	1772	xfuyljss.exe	100

C:\Users\Admin\AppData\Local\Temp\2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3216
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tgdzeqfk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4192
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xfuyljss.exe" C:\Windows\SysWOW64\tgdzeqfk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2352
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tgdzeqfk binPath= "C:\Windows\SysWOW64\tgdzeqfk\xfuyljss.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:848
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tgdzeqfk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tgdzeqfk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2624
- 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:1140
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3216 -s 1256
  2⤵
  - Program crash
  PID:1972

C:\Windows\SysWOW64\tgdzeqfk\xfuyljss.exe
C:\Windows\SysWOW64\tgdzeqfk\xfuyljss.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-22_436f3f4351865fdad50a16c2356d2ac2_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1772 -s 532
  2⤵
  - Program crash
  PID:1752

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3216 -ip 3216
1⤵
PID:2360

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1772 -ip 1772
1⤵
PID:2460

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\xfuyljss.exe

Filesize
12.9MB

MD5
294ca74724e31618b3b9acd3c72736f8

SHA1
dd97366515a0883eb3918ab1e3890935f037cd4c

SHA256
fb9391e2338952f5c458760360eff0aa219a1d64b99bbbeb6bbac5f122886d45

SHA512
4f0a3312a6e85e148e51fa4b0b5111d29604ff72cc83f423f8e10a23eaee91d8ea1ef76686d7dc7a68806e080056ef19cdc71d2eb2aaa38e4c6286078045c8f9

Download Submit
memory/1772-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1772-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1772-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1772-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3216-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3216-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3216-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3216-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3216-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3216-1-0x0000000000700000-0x0000000000800000-memory.dmp

Filesize
1024KB

Download
memory/4436-14-0x0000000000170000-0x0000000000185000-memory.dmp

Filesize
84KB

Download
memory/4436-16-0x0000000000170000-0x0000000000185000-memory.dmp

Filesize
84KB

Download
memory/4436-17-0x0000000000170000-0x0000000000185000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads