tofsee | dc7c95788c1c469180356c18a99f3ad1b71f609eabbd51a85966f83f245c252b

General

Target

2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe
Size

12.4MB
MD5

cf2e3c0be26450cbab80b728d8789650
SHA1

58f4d81c6127d6da8dfde18fdfaa433aba54af12
SHA256

dc7c95788c1c469180356c18a99f3ad1b71f609eabbd51a85966f83f245c252b
SHA512

3f8222faa36a11ab4d0344cc475902d5a482dd58ef4b2922cf536dcc62c076a678fa6ffc34ffbc3b3215709032c790d19ca613b138b09a174756dce656cb974c
SSDEEP

49152:zqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP:zqtYc3

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
4484	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\sxmvarro\ImagePath = "C:\\Windows\\SysWOW64\\sxmvarro\\xwkmaxyq.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	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe

Deletes itself 1 IoCs

pid	Process
2344	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3820	xwkmaxyq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3820 set thread context of 2344	3820	xwkmaxyq.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
2584	sc.exe
4924	sc.exe
748	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
3960	3712	WerFault.exe	83
2616	3820	WerFault.exe	94

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	svchost.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	xwkmaxyq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3712 wrote to memory of 1312	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	84
PID 3712 wrote to memory of 1312	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	84
PID 3712 wrote to memory of 1312	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	84
PID 3712 wrote to memory of 4332	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	86
PID 3712 wrote to memory of 4332	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	86
PID 3712 wrote to memory of 4332	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	86
PID 3712 wrote to memory of 748	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	88
PID 3712 wrote to memory of 748	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	88
PID 3712 wrote to memory of 748	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	88
PID 3712 wrote to memory of 2584	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	90
PID 3712 wrote to memory of 2584	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	90
PID 3712 wrote to memory of 2584	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	90
PID 3712 wrote to memory of 4924	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	92
PID 3712 wrote to memory of 4924	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	92
PID 3712 wrote to memory of 4924	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	92
PID 3820 wrote to memory of 2344	3820	xwkmaxyq.exe	95
PID 3820 wrote to memory of 2344	3820	xwkmaxyq.exe	95
PID 3820 wrote to memory of 2344	3820	xwkmaxyq.exe	95
PID 3820 wrote to memory of 2344	3820	xwkmaxyq.exe	95
PID 3820 wrote to memory of 2344	3820	xwkmaxyq.exe	95
PID 3712 wrote to memory of 4484	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	97
PID 3712 wrote to memory of 4484	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	97
PID 3712 wrote to memory of 4484	3712	2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sxmvarro\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xwkmaxyq.exe" C:\Windows\SysWOW64\sxmvarro\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sxmvarro binPath= "C:\Windows\SysWOW64\sxmvarro\xwkmaxyq.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:748
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sxmvarro "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2584
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sxmvarro
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4924
- 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:4484
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3712 -s 1264
  2⤵
  - Program crash
  PID:3960

C:\Windows\SysWOW64\sxmvarro\xwkmaxyq.exe
C:\Windows\SysWOW64\sxmvarro\xwkmaxyq.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-29_cf2e3c0be26450cbab80b728d8789650_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3820
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2344
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3820 -s 512
  2⤵
  - Program crash
  PID:2616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 468 -p 3712 -ip 3712
1⤵
PID:4716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3820 -ip 3820
1⤵
PID:4744

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\xwkmaxyq.exe

Filesize
12.8MB

MD5
8bdbca894376b8c9a864ac11879ddb58

SHA1
8edf0912d7a6574770ec52d56d89ced568d5c5ab

SHA256
0fa9658a9944e2a5fd88eb5fa7b9bd44cd065257f3aeaac1e645566f0fecd131

SHA512
974fbcdeaf2219b4fe8fcb4e95e740dbb705c6f8460147fd8f73f073fd387c0d70127a2bc9ed989310ddee9d21e2a1c4b1d319435dd73ce0c1ca364386a6690f

Download Submit
memory/2344-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2344-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2344-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3712-1-0x0000000003000000-0x0000000003100000-memory.dmp

Filesize
1024KB

Download
memory/3712-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/3712-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3712-12-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/3712-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3712-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/3820-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads