tofsee | 3497d7067998701c2bea7bf39fc56497adfe1a4e8a230b5be44692d86c9d127f

General

Target

2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe
Size

12.4MB
MD5

acf0ce65b64c5ab5852b6958b3db703a
SHA1

73c23316ae3703ca16ec98f37cd01dc580ab8294
SHA256

3497d7067998701c2bea7bf39fc56497adfe1a4e8a230b5be44692d86c9d127f
SHA512

fbbf0d5e1619b2f00e129faaebb0e24962804c82f81bd998d329259a148b8779dba8ea8904e942b9ae253441b9fa0d07831985914bf838456476c00163900c8a
SSDEEP

24576:ipomTTN9ttttttttttttttttttttttttttttttttttttttttttttttttttttttt1:Goo

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
4856	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\icnsjeif\ImagePath = "C:\\Windows\\SysWOW64\\icnsjeif\\pcolerwg.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-1-5-21-4003209913-3868522715-854928974-1000\Control Panel\International\Geo\Nation	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe

Deletes itself 1 IoCs

pid	Process
4016	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2524	pcolerwg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2524 set thread context of 4016	2524	pcolerwg.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3388	sc.exe
4512	sc.exe
3496	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
4540	4832	WerFault.exe	82
4024	2524	WerFault.exe	96

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	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pcolerwg.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 3028	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	86
PID 4832 wrote to memory of 3028	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	86
PID 4832 wrote to memory of 3028	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	86
PID 4832 wrote to memory of 1900	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	88
PID 4832 wrote to memory of 1900	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	88
PID 4832 wrote to memory of 1900	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	88
PID 4832 wrote to memory of 3388	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	90
PID 4832 wrote to memory of 3388	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	90
PID 4832 wrote to memory of 3388	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	90
PID 4832 wrote to memory of 4512	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	92
PID 4832 wrote to memory of 4512	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	92
PID 4832 wrote to memory of 4512	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	92
PID 4832 wrote to memory of 3496	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	94
PID 4832 wrote to memory of 3496	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	94
PID 4832 wrote to memory of 3496	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	94
PID 4832 wrote to memory of 4856	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	97
PID 4832 wrote to memory of 4856	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	97
PID 4832 wrote to memory of 4856	4832	2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe	97
PID 2524 wrote to memory of 4016	2524	pcolerwg.exe	102
PID 2524 wrote to memory of 4016	2524	pcolerwg.exe	102
PID 2524 wrote to memory of 4016	2524	pcolerwg.exe	102
PID 2524 wrote to memory of 4016	2524	pcolerwg.exe	102
PID 2524 wrote to memory of 4016	2524	pcolerwg.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\icnsjeif\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pcolerwg.exe" C:\Windows\SysWOW64\icnsjeif\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1900
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create icnsjeif binPath= "C:\Windows\SysWOW64\icnsjeif\pcolerwg.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description icnsjeif "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4512
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start icnsjeif
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3496
- 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:4856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4832 -s 1124
  2⤵
  - Program crash
  PID:4540

C:\Windows\SysWOW64\icnsjeif\pcolerwg.exe
C:\Windows\SysWOW64\icnsjeif\pcolerwg.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_acf0ce65b64c5ab5852b6958b3db703a_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2524
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2524 -s 512
  2⤵
  - Program crash
  PID:4024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4832 -ip 4832
1⤵
PID:2364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2524 -ip 2524
1⤵
PID:548

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\pcolerwg.exe

Filesize
12.7MB

MD5
7335a64581ddc835be9261bd98ffe878

SHA1
27b8ff9415cafb3426b0358f4ba5e85ac6072dc3

SHA256
d959b4eabb8865dba1b54531820a021d74cdf3f5f641ae73fa797e5c56a4ac37

SHA512
43bdf2b2da58a25b85cc3c1ce46ec7142662648747692eb8c9a6b8f027c8cf313c84252da9cc524c1052c30ae97150e3311f578b16759fa44691266276563144

Download Submit
memory/2524-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2524-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2524-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2524-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4016-14-0x00000000001A0000-0x00000000001B5000-memory.dmp

Filesize
84KB

Download
memory/4016-16-0x00000000001A0000-0x00000000001B5000-memory.dmp

Filesize
84KB

Download
memory/4016-17-0x00000000001A0000-0x00000000001B5000-memory.dmp

Filesize
84KB

Download
memory/4832-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4832-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4832-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4832-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4832-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4832-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads