tofsee | 003b168c37c2021abf8ab1633c3c633f460cc992bd9d4119adc7f68268b5e281

General

Target

2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe
Size

14.6MB
MD5

1a2bdbcde1923aadc9e8ee75d33e78ba
SHA1

a6888eb7a394e8ffcf897aca153c6b10a7a98d85
SHA256

003b168c37c2021abf8ab1633c3c633f460cc992bd9d4119adc7f68268b5e281
SHA512

1e8d740dc793a4913a252247683c1239fa2400ec1ab7ecc3aa1f4fa36eeaab151460acec08971321b3deff5cf837e3bb1ab3194f3f98eaa7474660e8e468e73a
SSDEEP

3072:gLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:9OMdRQr7OB0ypmMXnl8XEPM3noSWOC

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
3684	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\fduevisv\ImagePath = "C:\\Windows\\SysWOW64\\fduevisv\\zqywgbiw.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-1-5-21-805940606-1861219160-370298170-1000\Control Panel\International\Geo\Nation	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe

Deletes itself 1 IoCs

pid	Process
724	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4220	zqywgbiw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4220 set thread context of 724	4220	zqywgbiw.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4596	sc.exe
4668	sc.exe
4696	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
8	3672	WerFault.exe	82
3540	4220	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_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	zqywgbiw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 224	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	86
PID 3672 wrote to memory of 224	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	86
PID 3672 wrote to memory of 224	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	86
PID 3672 wrote to memory of 2280	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	88
PID 3672 wrote to memory of 2280	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	88
PID 3672 wrote to memory of 2280	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	88
PID 3672 wrote to memory of 4596	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	90
PID 3672 wrote to memory of 4596	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	90
PID 3672 wrote to memory of 4596	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	90
PID 3672 wrote to memory of 4668	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	92
PID 3672 wrote to memory of 4668	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	92
PID 3672 wrote to memory of 4668	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	92
PID 3672 wrote to memory of 4696	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	94
PID 3672 wrote to memory of 4696	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	94
PID 3672 wrote to memory of 4696	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	94
PID 3672 wrote to memory of 3684	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	97
PID 3672 wrote to memory of 3684	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	97
PID 3672 wrote to memory of 3684	3672	2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe	97
PID 4220 wrote to memory of 724	4220	zqywgbiw.exe	102
PID 4220 wrote to memory of 724	4220	zqywgbiw.exe	102
PID 4220 wrote to memory of 724	4220	zqywgbiw.exe	102
PID 4220 wrote to memory of 724	4220	zqywgbiw.exe	102
PID 4220 wrote to memory of 724	4220	zqywgbiw.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fduevisv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zqywgbiw.exe" C:\Windows\SysWOW64\fduevisv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fduevisv binPath= "C:\Windows\SysWOW64\fduevisv\zqywgbiw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4596
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fduevisv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fduevisv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4696
- 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:3684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 1236
  2⤵
  - Program crash
  PID:8

C:\Windows\SysWOW64\fduevisv\zqywgbiw.exe
C:\Windows\SysWOW64\fduevisv\zqywgbiw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-01_1a2bdbcde1923aadc9e8ee75d33e78ba_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4220
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4220 -s 512
  2⤵
  - Program crash
  PID:3540

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3672 -ip 3672
1⤵
PID:1340

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4220 -ip 4220
1⤵
PID:936

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

Loading Replay Monitor...

Downloads

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

Filesize
12.9MB

MD5
e14bd8212b23187c852050e57cd14f1b

SHA1
ecacc7a7dabd107cebb6794c89c41569576d17c6

SHA256
60116ccd9a16d8e7ebc339e89fb522dd54ef58fb77f0f348e4efbe82376f38c1

SHA512
d6fe27101ec43543b7cf49cccf45ab781d2959a08b2ad37b9f9b50158165e16f2163632add2b9c25cb773d320eb8da08f0b65c6c4ef70fb50f7616e15560b22b

Download Submit
memory/724-14-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/724-16-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/724-17-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/3672-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3672-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3672-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3672-1-0x0000000000460000-0x0000000000560000-memory.dmp

Filesize
1024KB

Download
memory/4220-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4220-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4220-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/4220-19-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads