tofsee | 942030f148b84380bd6d7d6b19ce99a8717e4614333e216e505f0886087a1243

General

Target

2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe
Size

14.0MB
MD5

7ad23caeb2c9e5adc7a3ee8e4881d40c
SHA1

df8f22b2382a5dac799c19b814d8a4c2c6de33d6
SHA256

942030f148b84380bd6d7d6b19ce99a8717e4614333e216e505f0886087a1243
SHA512

cdc90ae7180cdcdcf33b19157439c276459f6bf53af4d43c33292707f2d6bb20a7570a4259e02feb883d9234a37fe0e9575f49ea0d381facef64e2e04dd0dc4e
SSDEEP

24576:ypomTTN9tttttttttttttttttttttttttttttttttttttttttttttttttttttttH:Woo

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
2792	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\uoisjoms\ImagePath = "C:\\Windows\\SysWOW64\\uoisjoms\\pgomwrym.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	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe

Deletes itself 1 IoCs

pid	Process
2784	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2636	pgomwrym.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2636 set thread context of 2784	2636	pgomwrym.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3100	sc.exe
1028	sc.exe
2224	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
3564	3544	WerFault.exe	83
1216	2636	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	pgomwrym.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_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	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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3544 wrote to memory of 4116	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	84
PID 3544 wrote to memory of 4116	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	84
PID 3544 wrote to memory of 4116	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	84
PID 3544 wrote to memory of 4812	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	86
PID 3544 wrote to memory of 4812	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	86
PID 3544 wrote to memory of 4812	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	86
PID 3544 wrote to memory of 3100	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	88
PID 3544 wrote to memory of 3100	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	88
PID 3544 wrote to memory of 3100	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	88
PID 3544 wrote to memory of 1028	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	90
PID 3544 wrote to memory of 1028	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	90
PID 3544 wrote to memory of 1028	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	90
PID 3544 wrote to memory of 2224	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	92
PID 3544 wrote to memory of 2224	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	92
PID 3544 wrote to memory of 2224	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	92
PID 3544 wrote to memory of 2792	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	95
PID 3544 wrote to memory of 2792	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	95
PID 3544 wrote to memory of 2792	3544	2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe	95
PID 2636 wrote to memory of 2784	2636	pgomwrym.exe	100
PID 2636 wrote to memory of 2784	2636	pgomwrym.exe	100
PID 2636 wrote to memory of 2784	2636	pgomwrym.exe	100
PID 2636 wrote to memory of 2784	2636	pgomwrym.exe	100
PID 2636 wrote to memory of 2784	2636	pgomwrym.exe	100

C:\Users\Admin\AppData\Local\Temp\2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3544
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uoisjoms\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4116
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pgomwrym.exe" C:\Windows\SysWOW64\uoisjoms\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uoisjoms binPath= "C:\Windows\SysWOW64\uoisjoms\pgomwrym.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3100
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uoisjoms "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uoisjoms
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2224
- 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:2792
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3544 -s 1272
  2⤵
  - Program crash
  PID:3564

C:\Windows\SysWOW64\uoisjoms\pgomwrym.exe
C:\Windows\SysWOW64\uoisjoms\pgomwrym.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-02_7ad23caeb2c9e5adc7a3ee8e4881d40c_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2636
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2636 -s 560
  2⤵
  - Program crash
  PID:1216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3544 -ip 3544
1⤵
PID:964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2636 -ip 2636
1⤵
PID:3216

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\pgomwrym.exe

Filesize
10.1MB

MD5
d40a5a99e5b66745edc1ffffe25704bf

SHA1
a2ddf4036ed9099538750b25bed4cc119c5e2840

SHA256
1deebe0c1ec4fd9bbb1cbf89e3660f395ae7b0fe8c7ec77ccea2fc84ca2cf3e5

SHA512
54e291047537190a4d347f40c660044e95a740edba8499d5cf130c345a2ba281480a77d2df8e2a4f6e6c7b04cdcb92945a73a70a5215a7933b69e6cd7e1b38cb

Download Submit
memory/2636-13-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2636-11-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2636-12-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2636-18-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2784-14-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download
memory/2784-16-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download
memory/2784-17-0x0000000000E50000-0x0000000000E65000-memory.dmp

Filesize
84KB

Download
memory/3544-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3544-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3544-7-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/3544-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3544-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3544-1-0x00000000005C0000-0x00000000006C0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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