tofsee | 038b0c81cc776b4a401ee39b5aa856a9de1b6cb675e3ac1af1d60bab12a89405

General

Target

2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe
Size

14.3MB
MD5

dd25f7d89c62f6b011d4781d08655106
SHA1

7480b36fec2081c2eeec3e2b0e5fa21c6d71c3f2
SHA256

038b0c81cc776b4a401ee39b5aa856a9de1b6cb675e3ac1af1d60bab12a89405
SHA512

39f0e36c78a5e0fd5f4f22ca15eb15cebc2706188a773d6b523083e14463f4f793df527dc127fb1805df3225d54b62c735f5ff11a1bce6436ca1fa07dd67fe89
SSDEEP

49152:FqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:FqtYc3

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
1028	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\hyusxeau\ImagePath = "C:\\Windows\\SysWOW64\\hyusxeau\\yplsjimq.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe

Deletes itself 1 IoCs

pid	Process
4824	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3388	yplsjimq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3388 set thread context of 4824	3388	yplsjimq.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
2892	sc.exe
4992	sc.exe
4292	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
700	4600	WerFault.exe	81
1836	3388	WerFault.exe	92

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	2025-01-08_dd25f7d89c62f6b011d4781d08655106_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	yplsjimq.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4600 wrote to memory of 5096	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	82
PID 4600 wrote to memory of 5096	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	82
PID 4600 wrote to memory of 5096	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	82
PID 4600 wrote to memory of 4528	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	84
PID 4600 wrote to memory of 4528	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	84
PID 4600 wrote to memory of 4528	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	84
PID 4600 wrote to memory of 2892	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	86
PID 4600 wrote to memory of 2892	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	86
PID 4600 wrote to memory of 2892	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	86
PID 4600 wrote to memory of 4992	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	88
PID 4600 wrote to memory of 4992	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	88
PID 4600 wrote to memory of 4992	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	88
PID 4600 wrote to memory of 4292	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	90
PID 4600 wrote to memory of 4292	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	90
PID 4600 wrote to memory of 4292	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	90
PID 3388 wrote to memory of 4824	3388	yplsjimq.exe	93
PID 3388 wrote to memory of 4824	3388	yplsjimq.exe	93
PID 3388 wrote to memory of 4824	3388	yplsjimq.exe	93
PID 3388 wrote to memory of 4824	3388	yplsjimq.exe	93
PID 3388 wrote to memory of 4824	3388	yplsjimq.exe	93
PID 4600 wrote to memory of 1028	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	95
PID 4600 wrote to memory of 1028	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	95
PID 4600 wrote to memory of 1028	4600	2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe	95

C:\Users\Admin\AppData\Local\Temp\2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4600
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hyusxeau\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5096
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yplsjimq.exe" C:\Windows\SysWOW64\hyusxeau\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4528
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hyusxeau binPath= "C:\Windows\SysWOW64\hyusxeau\yplsjimq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2892
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hyusxeau "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hyusxeau
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4292
- 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:1028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4600 -s 1040
  2⤵
  - Program crash
  PID:700

C:\Windows\SysWOW64\hyusxeau\yplsjimq.exe
C:\Windows\SysWOW64\hyusxeau\yplsjimq.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-08_dd25f7d89c62f6b011d4781d08655106_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3388
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4824
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3388 -s 548
  2⤵
  - Program crash
  PID:1836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4600 -ip 4600
1⤵
PID:3316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 3388 -ip 3388
1⤵
PID:1896

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\yplsjimq.exe

Filesize
12.4MB

MD5
8c94d6b3385483ea8c78bc863da3bb6e

SHA1
f45058578f354f8b9a2b64c91cdaec3354250403

SHA256
520936f0d45054384bedb2f685da3b9d47c9bd989d552c856cc758d7c42b5701

SHA512
aac43c83d709b547ef5720642e1cf0d9c2f8d55cb4357ce04a32e28f002133230f8ec5de8686e2e5891fb55f29d1f7584b94858258144f19df4e0f630218925b

Download Submit
memory/3388-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4600-1-0x0000000003050000-0x0000000003150000-memory.dmp

Filesize
1024KB

Download
memory/4600-2-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/4600-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4600-12-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/4600-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4600-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4824-8-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/4824-14-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download
memory/4824-15-0x0000000000560000-0x0000000000575000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads