tofsee | cc9470d2336b15fbb0c692b90d9bc19c26140f98c2422969ac1d223d262f5ee2

General

Target

2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe
Size

13.6MB
MD5

531e61003ca651617f61f707d2487d70
SHA1

534933e36aa862215c190989e161fca87b27c53c
SHA256

cc9470d2336b15fbb0c692b90d9bc19c26140f98c2422969ac1d223d262f5ee2
SHA512

4afd9ff2de2688cf81b6678b4b9c4c0b3ae8d94ff37a04420f45f951bf848fb9f66a2e21b04d0d888e82aac8f207b2544bd2a88d4c7481b3a11c4402dddf7108
SSDEEP

24576:hpomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttn:7oo

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
33	3144	Process not Found

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
4956	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\yhshjebv\ImagePath = "C:\\Windows\\SysWOW64\\yhshjebv\\uuvgbcai.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-1-5-21-3591594829-2464889670-1367169939-1000\Control Panel\International\Geo\Nation	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe

Deletes itself 1 IoCs

pid	Process
1316	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
8	uuvgbcai.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 8 set thread context of 1316	8	uuvgbcai.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1120	sc.exe
1736	sc.exe
4684	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
1036	5060	WerFault.exe	84
3776	8	WerFault.exe	95

System Location Discovery: System Language Discovery 1 TTPs 10 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	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.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	cmd.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	uuvgbcai.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2588	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5060 wrote to memory of 3252	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	85
PID 5060 wrote to memory of 3252	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	85
PID 5060 wrote to memory of 3252	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	85
PID 5060 wrote to memory of 4068	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	87
PID 5060 wrote to memory of 4068	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	87
PID 5060 wrote to memory of 4068	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	87
PID 5060 wrote to memory of 1120	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	89
PID 5060 wrote to memory of 1120	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	89
PID 5060 wrote to memory of 1120	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	89
PID 5060 wrote to memory of 1736	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	91
PID 5060 wrote to memory of 1736	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	91
PID 5060 wrote to memory of 1736	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	91
PID 5060 wrote to memory of 4684	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	93
PID 5060 wrote to memory of 4684	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	93
PID 5060 wrote to memory of 4684	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	93
PID 5060 wrote to memory of 4956	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	96
PID 5060 wrote to memory of 4956	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	96
PID 5060 wrote to memory of 4956	5060	2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe	96
PID 8 wrote to memory of 1316	8	uuvgbcai.exe	101
PID 8 wrote to memory of 1316	8	uuvgbcai.exe	101
PID 8 wrote to memory of 1316	8	uuvgbcai.exe	101
PID 8 wrote to memory of 1316	8	uuvgbcai.exe	101
PID 8 wrote to memory of 1316	8	uuvgbcai.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5060
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yhshjebv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uuvgbcai.exe" C:\Windows\SysWOW64\yhshjebv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yhshjebv binPath= "C:\Windows\SysWOW64\yhshjebv\uuvgbcai.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1120
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yhshjebv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yhshjebv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4684
- 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:4956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5060 -s 640
  2⤵
  - Program crash
  PID:1036

C:\Windows\SysWOW64\yhshjebv\uuvgbcai.exe
C:\Windows\SysWOW64\yhshjebv\uuvgbcai.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-08_531e61003ca651617f61f707d2487d70_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:8
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 8 -s 512
  2⤵
  - Program crash
  PID:3776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 5060 -ip 5060
1⤵
PID:1656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 8 -ip 8
1⤵
PID:4252

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping 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-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU1NzgiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODAxNjUyMzAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI0OTkxNzkwOTM5Ii8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:2588

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
14.3MB

MD5
34144a68463c8e46c23addce6d2b60d1

SHA1
a93e71042063b06a295a03ebc8f5175482eef2bf

SHA256
d3c13aa0c3e54347acb8601b0b6a66d5587a7efb637e6b6d1aaa843aea7fa954

SHA512
886499a8816d54d96851ea77f75d9df371bbf20cfb9c0cb7767f613f4724ffb98262d7e73a5c09fccfa383e0a042e11d8050e1a398033c987508f92b45f63066

Download Submit
memory/8-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/8-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/8-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/8-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1316-14-0x0000000000500000-0x0000000000515000-memory.dmp

Filesize
84KB

Download
memory/1316-16-0x0000000000500000-0x0000000000515000-memory.dmp

Filesize
84KB

Download
memory/1316-17-0x0000000000500000-0x0000000000515000-memory.dmp

Filesize
84KB

Download
memory/5060-8-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/5060-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5060-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/5060-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/5060-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5060-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads