tofsee | e1df3fe8c0ae2b0705699516b26e6cc71c741e05c56922378d1a0c608d8c399c

General

Target

2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe
Size

13.7MB
MD5

63dcaac1b381fa7e88d8cd2e4cdd8d74
SHA1

c30c822977803bfab85a9ff37961517bd74c8311
SHA256

e1df3fe8c0ae2b0705699516b26e6cc71c741e05c56922378d1a0c608d8c399c
SHA512

484379fcf1f922c65e2bbd8ad204344fe11422e3f3bf6d5959b2d84c3efae0945a66175b86fd8daa8607f1189022d4cc9cb04752a275af724395a500c1bd6451
SSDEEP

49152:PqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:PqtYc3

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
2816	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\kuopmyxf\ImagePath = "C:\\Windows\\SysWOW64\\kuopmyxf\\xrritctv.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe

Deletes itself 1 IoCs

pid	Process
4052	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3696	xrritctv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3696 set thread context of 4052	3696	xrritctv.exe	94

Launches sc.exe 3 IoCs

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

pid	Process
5032	sc.exe
3188	sc.exe
3112	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
4072	3932	WerFault.exe	82
1624	3696	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	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.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
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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xrritctv.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3932 wrote to memory of 4036	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	83
PID 3932 wrote to memory of 4036	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	83
PID 3932 wrote to memory of 4036	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	83
PID 3932 wrote to memory of 4092	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	85
PID 3932 wrote to memory of 4092	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	85
PID 3932 wrote to memory of 4092	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	85
PID 3932 wrote to memory of 5032	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	87
PID 3932 wrote to memory of 5032	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	87
PID 3932 wrote to memory of 5032	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	87
PID 3932 wrote to memory of 3188	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	89
PID 3932 wrote to memory of 3188	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	89
PID 3932 wrote to memory of 3188	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	89
PID 3932 wrote to memory of 3112	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	91
PID 3932 wrote to memory of 3112	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	91
PID 3932 wrote to memory of 3112	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	91
PID 3696 wrote to memory of 4052	3696	xrritctv.exe	94
PID 3696 wrote to memory of 4052	3696	xrritctv.exe	94
PID 3696 wrote to memory of 4052	3696	xrritctv.exe	94
PID 3696 wrote to memory of 4052	3696	xrritctv.exe	94
PID 3696 wrote to memory of 4052	3696	xrritctv.exe	94
PID 3932 wrote to memory of 2816	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	95
PID 3932 wrote to memory of 2816	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	95
PID 3932 wrote to memory of 2816	3932	2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe	95

C:\Users\Admin\AppData\Local\Temp\2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kuopmyxf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xrritctv.exe" C:\Windows\SysWOW64\kuopmyxf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4092
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create kuopmyxf binPath= "C:\Windows\SysWOW64\kuopmyxf\xrritctv.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5032
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description kuopmyxf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start kuopmyxf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3112
- 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:2816
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3932 -s 1036
  2⤵
  - Program crash
  PID:4072

C:\Windows\SysWOW64\kuopmyxf\xrritctv.exe
C:\Windows\SysWOW64\kuopmyxf\xrritctv.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_63dcaac1b381fa7e88d8cd2e4cdd8d74_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3696
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4052
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3696 -s 512
  2⤵
  - Program crash
  PID:1624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3932 -ip 3932
1⤵
PID:4032

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 3696 -ip 3696
1⤵
PID:1116

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\xrritctv.exe

Filesize
11.3MB

MD5
c61c74c3ed5bd267783967c90127fe42

SHA1
7a7714887b1c2ab193792a9f95238bb5e89ca9f2

SHA256
ef194301e059bca93ed16be97bbd5b929564285dd62894d0a7b0bec1cbcabe0e

SHA512
83b65dfd2dee39c695de1dddf8308191186c02c74a26a6f6c3bd5de58c928e6612bbb8e31747fc192ac4ed18bdfebfe35f93970acf8687fa4d5beb92b815f2a3

Download Submit
memory/3696-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3932-1-0x0000000002E80000-0x0000000002F80000-memory.dmp

Filesize
1024KB

Download
memory/3932-2-0x0000000002E30000-0x0000000002E43000-memory.dmp

Filesize
76KB

Download
memory/3932-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3932-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3932-12-0x0000000002E30000-0x0000000002E43000-memory.dmp

Filesize
76KB

Download
memory/3932-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4052-8-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/4052-14-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/4052-15-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads