tofsee | 97b12ec9acdaf954e9b4146a812dee8769dad50e1518505098fea65e0d612623

General

Target

2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe
Size

11.3MB
MD5

c5c84333e789e6a438348a5486a6d01c
SHA1

29f733539b5bf6f1cd2b9f26598e50ac8eb9e922
SHA256

97b12ec9acdaf954e9b4146a812dee8769dad50e1518505098fea65e0d612623
SHA512

413f2af7181bdc2940e05a98f3911aab7d71dc61c8f6199290f552bff7b0d00842065b251528ab6ccc787e275836a9286b022ba1e3ce04c2a79d354c7a4cc020
SSDEEP

24576:FEfmTNIkv/ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZD:Ofot

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
4744	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\grhxkuqc\ImagePath = "C:\\Windows\\SysWOW64\\grhxkuqc\\dlaerpyy.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe

Deletes itself 1 IoCs

pid	Process
4924	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3864	dlaerpyy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3864 set thread context of 4924	3864	dlaerpyy.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1760	sc.exe
4608	sc.exe
4440	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
3896	1376	WerFault.exe	81
4344	3864	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	2025-01-28_c5c84333e789e6a438348a5486a6d01c_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	dlaerpyy.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1376 wrote to memory of 4820	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	82
PID 1376 wrote to memory of 4820	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	82
PID 1376 wrote to memory of 4820	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	82
PID 1376 wrote to memory of 1712	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	84
PID 1376 wrote to memory of 1712	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	84
PID 1376 wrote to memory of 1712	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	84
PID 1376 wrote to memory of 1760	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	86
PID 1376 wrote to memory of 1760	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	86
PID 1376 wrote to memory of 1760	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	86
PID 1376 wrote to memory of 4608	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	88
PID 1376 wrote to memory of 4608	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	88
PID 1376 wrote to memory of 4608	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	88
PID 1376 wrote to memory of 4440	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	90
PID 1376 wrote to memory of 4440	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	90
PID 1376 wrote to memory of 4440	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	90
PID 1376 wrote to memory of 4744	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	93
PID 1376 wrote to memory of 4744	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	93
PID 1376 wrote to memory of 4744	1376	2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe	93
PID 3864 wrote to memory of 4924	3864	dlaerpyy.exe	98
PID 3864 wrote to memory of 4924	3864	dlaerpyy.exe	98
PID 3864 wrote to memory of 4924	3864	dlaerpyy.exe	98
PID 3864 wrote to memory of 4924	3864	dlaerpyy.exe	98
PID 3864 wrote to memory of 4924	3864	dlaerpyy.exe	98

C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\grhxkuqc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\dlaerpyy.exe" C:\Windows\SysWOW64\grhxkuqc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create grhxkuqc binPath= "C:\Windows\SysWOW64\grhxkuqc\dlaerpyy.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description grhxkuqc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start grhxkuqc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4440
- 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:4744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1376 -s 1028
  2⤵
  - Program crash
  PID:3896

C:\Windows\SysWOW64\grhxkuqc\dlaerpyy.exe
C:\Windows\SysWOW64\grhxkuqc\dlaerpyy.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-28_c5c84333e789e6a438348a5486a6d01c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3864
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3864 -s 508
  2⤵
  - Program crash
  PID:4344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1376 -ip 1376
1⤵
PID:232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3864 -ip 3864
1⤵
PID:2184

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

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Downloads

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

Filesize
14.1MB

MD5
0aa045fd7e868d2b897f7c7d49bd3da1

SHA1
3f32cac736e6fcc3ff4e9dbfbb2fabd1317d7fc2

SHA256
432fa98f61def37c7834351b857e1775a33a94de164b7f94ec7320716daf0fa0

SHA512
e25477ad497ccc470fd73a14d2212dad22c258f49e73b958baf0438b9e1b9e5f30027ce484dcb2534e582c9283a5bd8f2a2452786ea2a37ff0c56d8a2f7a9525

Download Submit
memory/1376-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/1376-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1376-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/1376-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/1376-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1376-1-0x0000000000720000-0x0000000000820000-memory.dmp

Filesize
1024KB

Download
memory/3864-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3864-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3864-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3864-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4924-14-0x0000000000630000-0x0000000000645000-memory.dmp

Filesize
84KB

Download
memory/4924-16-0x0000000000630000-0x0000000000645000-memory.dmp

Filesize
84KB

Download
memory/4924-17-0x0000000000630000-0x0000000000645000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads