tofsee | 1b564e720d600b5b4ea45fe242f595c54e356da8f88c2e60c198636df27eab9a

General

Target

2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe
Size

13.6MB
MD5

e3a32c1ce738d32fd2833ac693d0bdb5
SHA1

1ecb711108d3ad9a67df2d302eef34031f53f91e
SHA256

1b564e720d600b5b4ea45fe242f595c54e356da8f88c2e60c198636df27eab9a
SHA512

2d810b3845c1c3b84cbe02999561c984b076aa7c40406c6594d3828b8d95f9239fca74819bc863a91bab6c221b71299d56fc4cd10cdb8e62de42e18069940525
SSDEEP

49152:aqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:aqtYc3

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
3696	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\gmnfxfex\ImagePath = "C:\\Windows\\SysWOW64\\gmnfxfex\\mvpumlgc.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	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe

Deletes itself 1 IoCs

pid	Process
4884	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4356	mvpumlgc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4356 set thread context of 4884	4356	mvpumlgc.exe	93

Launches sc.exe 3 IoCs

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

pid	Process
4496	sc.exe
1552	sc.exe
1880	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
1856	4356	WerFault.exe	92
3152	1120	WerFault.exe	81

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	mvpumlgc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 2732	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	82
PID 1120 wrote to memory of 2732	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	82
PID 1120 wrote to memory of 2732	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	82
PID 1120 wrote to memory of 3216	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	84
PID 1120 wrote to memory of 3216	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	84
PID 1120 wrote to memory of 3216	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	84
PID 1120 wrote to memory of 4496	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	86
PID 1120 wrote to memory of 4496	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	86
PID 1120 wrote to memory of 4496	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	86
PID 1120 wrote to memory of 1552	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	88
PID 1120 wrote to memory of 1552	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	88
PID 1120 wrote to memory of 1552	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	88
PID 1120 wrote to memory of 1880	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	90
PID 1120 wrote to memory of 1880	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	90
PID 1120 wrote to memory of 1880	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	90
PID 4356 wrote to memory of 4884	4356	mvpumlgc.exe	93
PID 4356 wrote to memory of 4884	4356	mvpumlgc.exe	93
PID 4356 wrote to memory of 4884	4356	mvpumlgc.exe	93
PID 4356 wrote to memory of 4884	4356	mvpumlgc.exe	93
PID 4356 wrote to memory of 4884	4356	mvpumlgc.exe	93
PID 1120 wrote to memory of 3696	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	97
PID 1120 wrote to memory of 3696	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	97
PID 1120 wrote to memory of 3696	1120	2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gmnfxfex\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mvpumlgc.exe" C:\Windows\SysWOW64\gmnfxfex\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gmnfxfex binPath= "C:\Windows\SysWOW64\gmnfxfex\mvpumlgc.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gmnfxfex "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gmnfxfex
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1880
- 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:3696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1120 -s 1108
  2⤵
  - Program crash
  PID:3152

C:\Windows\SysWOW64\gmnfxfex\mvpumlgc.exe
C:\Windows\SysWOW64\gmnfxfex\mvpumlgc.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-21_e3a32c1ce738d32fd2833ac693d0bdb5_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4356
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4884
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4356 -s 532
  2⤵
  - Program crash
  PID:1856

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4356 -ip 4356
1⤵
PID:2208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1120 -ip 1120
1⤵
PID:1920

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\mvpumlgc.exe

Filesize
12.0MB

MD5
33041b395629aaae8001d2702284184e

SHA1
5f9e2c0e865381d74bcf5a90dcb00d9a664a94e2

SHA256
bce673dc915e3d87112b07a66893b8b50cb73237af795dbf19d72f2ea8de3d52

SHA512
6624c23af9b9aeb75c8ac54ed64d69c53949b89072fcf83107608f87193fc15fe566fa2c0f0c38d2d8fd7779641a85d62e12e539c9b20f08337a9e401d941480

Download Submit
memory/1120-1-0x0000000002FF0000-0x00000000030F0000-memory.dmp

Filesize
1024KB

Download
memory/1120-2-0x0000000002E20000-0x0000000002E33000-memory.dmp

Filesize
76KB

Download
memory/1120-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1120-12-0x0000000002E20000-0x0000000002E33000-memory.dmp

Filesize
76KB

Download
memory/1120-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1120-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4356-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4884-8-0x0000000000DC0000-0x0000000000DD5000-memory.dmp

Filesize
84KB

Download
memory/4884-14-0x0000000000DC0000-0x0000000000DD5000-memory.dmp

Filesize
84KB

Download
memory/4884-15-0x0000000000DC0000-0x0000000000DD5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads