tofsee | 88a7ec735e3cbe569b3e28087a92d646e08532291e13217834815edf89235054

General

Target

2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe
Size

13.7MB
MD5

e0cd9fbbcbe2481f1d959855e52aab59
SHA1

ab6f1732b26b63547eeeb506651705d022bea5d5
SHA256

88a7ec735e3cbe569b3e28087a92d646e08532291e13217834815edf89235054
SHA512

e14f4b503991387d3601597b66842c1aed700b1128845a84ac9a22ac7dbc889da33fd2fc7e889845f25039adb3c397d4775662a84a0bd300e79c4a70d54cdad6
SSDEEP

393216:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX7:r

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

Downloads MZ/PE file 1 IoCs

flow	pid	Process
60	3052	Process not Found

Modifies Windows Firewall 2 TTPs 1 IoCs

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2456	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\femefyyd\ImagePath = "C:\\Windows\\SysWOW64\\femefyyd\\egbhanx.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-1-5-21-2573923862-3221519550-2669654151-1000\Control Panel\International\Geo\Nation	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe

Deletes itself 1 IoCs

pid	Process
4324	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1596	egbhanx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1596 set thread context of 4324	1596	egbhanx.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2996	sc.exe
3332	sc.exe
4508	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

System Location Discovery: System Language Discovery 1 TTPs 10 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	MicrosoftEdgeUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	egbhanx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3988	MicrosoftEdgeUpdate.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1228 wrote to memory of 444	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	89
PID 1228 wrote to memory of 444	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	89
PID 1228 wrote to memory of 444	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	89
PID 1228 wrote to memory of 3184	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	91
PID 1228 wrote to memory of 3184	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	91
PID 1228 wrote to memory of 3184	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	91
PID 1228 wrote to memory of 2996	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	93
PID 1228 wrote to memory of 2996	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	93
PID 1228 wrote to memory of 2996	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	93
PID 1228 wrote to memory of 3332	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	95
PID 1228 wrote to memory of 3332	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	95
PID 1228 wrote to memory of 3332	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	95
PID 1228 wrote to memory of 4508	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	97
PID 1228 wrote to memory of 4508	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	97
PID 1228 wrote to memory of 4508	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	97
PID 1596 wrote to memory of 4324	1596	egbhanx.exe	100
PID 1596 wrote to memory of 4324	1596	egbhanx.exe	100
PID 1596 wrote to memory of 4324	1596	egbhanx.exe	100
PID 1596 wrote to memory of 4324	1596	egbhanx.exe	100
PID 1596 wrote to memory of 4324	1596	egbhanx.exe	100
PID 1228 wrote to memory of 2456	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	101
PID 1228 wrote to memory of 2456	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	101
PID 1228 wrote to memory of 2456	1228	2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe	101

C:\Users\Admin\AppData\Local\Temp\2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\femefyyd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:444
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\egbhanx.exe" C:\Windows\SysWOW64\femefyyd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3184
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create femefyyd binPath= "C:\Windows\SysWOW64\femefyyd\egbhanx.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description femefyyd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start femefyyd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4508
- 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:2456

C:\Windows\SysWOW64\femefyyd\egbhanx.exe
C:\Windows\SysWOW64\femefyyd\egbhanx.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-02-09_e0cd9fbbcbe2481f1d959855e52aab59_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1596
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4324

C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe
"C:\Program Files (x86)\Microsoft\EdgeUpdate\MicrosoftEdgeUpdate.exe" /ping PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48cmVxdWVzdCBwcm90b2NvbD0iMy4wIiB1cGRhdGVyPSJPbWFoYSIgdXBkYXRlcnZlcnNpb249IjEuMy4xOTUuNDMiIHNoZWxsX3ZlcnNpb249IjEuMy4xOTUuNDMiIGlzbWFjaGluZT0iMSIgc2Vzc2lvbmlkPSJ7RDgxQkU1NjQtQkZDNS00RDZDLUJDMjUtNDE4NThENjlERUYzfSIgdXNlcmlkPSJ7QjY4NEMzRUQtRDU3NS00RUI2LTk2NkYtMjk0RDYyNDVBMjE3fSIgaW5zdGFsbHNvdXJjZT0ibGltaXRlZCIgcmVxdWVzdGlkPSJ7QkM2RjA0NDUtNTlCMC00NDc2LTlEMEEtRTdFMEUyQ0NFMzQwfSIgZGVkdXA9ImNyIiBkb21haW5qb2luZWQ9IjAiPjxodyBsb2dpY2FsX2NwdXM9IjIiIHBoeXNtZW1vcnk9IjQiIGRpc2tfdHlwZT0iMiIgc3NlPSIxIiBzc2UyPSIxIiBzc2UzPSIxIiBzc3NlMz0iMSIgc3NlNDE9IjEiIHNzZTQyPSIxIiBhdng9IjEiLz48b3MgcGxhdGZvcm09IndpbiIgdmVyc2lvbj0iMTAuMC4xOTA0MS4xMjg4IiBzcD0iIiBhcmNoPSJ4NjQiIHByb2R1Y3RfdHlwZT0iNDgiIGlzX3dpcD0iMCIgaXNfaW5fbG9ja2Rvd25fbW9kZT0iMCIvPjxvZW0gcHJvZHVjdF9tYW51ZmFjdHVyZXI9IiIgcHJvZHVjdF9uYW1lPSIiLz48ZXhwIGV0YWc9IiZxdW90O0UreGJBejZZNnNVMTI4OWJTNnFsNFZSTGJramZCVUdUTUpzanJIcjQ0aUk9JnF1b3Q7Ii8-PGFwcCBhcHBpZD0iezhBNjlEMzQ1LUQ1NjQtNDYzYy1BRkYxLUE2OUQ5RTUzMEY5Nn0iIHZlcnNpb249IjEyMy4wLjYzMTIuMTIzIiBuZXh0dmVyc2lvbj0iIiBsYW5nPSJlbiIgYnJhbmQ9IkdHTFMiIGNsaWVudD0iIiBpbnN0YWxsYWdlPSIxIiBpbnN0YWxsZGF0ZXRpbWU9IjE3Mzg5NDU4MTUiIG9vYmVfaW5zdGFsbF90aW1lPSIxMzM4MzQxODE1MzQzMTAwMDAiPjxldmVudCBldmVudHR5cGU9IjMxIiBldmVudHJlc3VsdD0iMSIgZXJyb3Jjb2RlPSIwIiBleHRyYWNvZGUxPSIyMTc5ODYyIiBzeXN0ZW1fdXB0aW1lX3RpY2tzPSI1MTUyNTY4NzMyIi8-PC9hcHA-PC9yZXF1ZXN0Pg
1⤵
- System Location Discovery: System Language Discovery
- System Network Configuration Discovery: Internet Connection Discovery
PID:3988

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

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
13.4MB

MD5
f987ba4fb511517b30fdfa303659df38

SHA1
b41a2a92c9ae26aeedd164592af3e7cd616153e7

SHA256
3206ffa54f6b0a25487dc50c31f9fd33752fbd551dd1e87a7f0bcc11cb563d2a

SHA512
08af7d0c1fb30114ac120ac0e53646ce2880502bb3b4f33bc6cb64e4840428e22b097e024044090d9d4ecfc7f77226fecd6f962b14067a0300d2aa0f827b8cd0

Download Submit
memory/1228-19-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1228-2-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/1228-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/1228-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1228-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1228-18-0x00000000004A0000-0x00000000004B3000-memory.dmp

Filesize
76KB

Download
memory/1596-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1596-10-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1596-9-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/1596-8-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4324-16-0x0000000000580000-0x0000000000595000-memory.dmp

Filesize
84KB

Download
memory/4324-11-0x0000000000580000-0x0000000000595000-memory.dmp

Filesize
84KB

Download
memory/4324-21-0x0000000000580000-0x0000000000595000-memory.dmp

Filesize
84KB

Download
memory/4324-20-0x0000000000580000-0x0000000000595000-memory.dmp

Filesize
84KB

Download
memory/4324-22-0x0000000000580000-0x0000000000595000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads