tofsee | 5cdda5a30dfac65c765ddba79a5eb58eea819a818347e6b9a15e138a553e9c1c

General

Target

2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe
Size

11.9MB
MD5

cf1ee4c0d22d48ebd7ba5de6d28e37ff
SHA1

feffa2b1e47bb1770e61c0f1b76b37cb4ee4ad1d
SHA256

5cdda5a30dfac65c765ddba79a5eb58eea819a818347e6b9a15e138a553e9c1c
SHA512

6fd0cf200d338613a6eabfe20d12576572c73d12f99e01a7e1b2d431d3b692b6fbb2149e9a48463ee9235bb2e1dfefae692c1e11f9cdf20e970624841b3892b1
SSDEEP

49152:OqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:OqtYc3

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
3568	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\lyinilei\ImagePath = "C:\\Windows\\SysWOW64\\lyinilei\\eyypajac.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe

Deletes itself 1 IoCs

pid	Process
4356	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4932	eyypajac.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4932 set thread context of 4356	4932	eyypajac.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
3504	sc.exe
1852	sc.exe
5056	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
3648	4932	WerFault.exe	97
3660	412	WerFault.exe	82

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	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_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	eyypajac.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 412 wrote to memory of 3616	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	83
PID 412 wrote to memory of 3616	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	83
PID 412 wrote to memory of 3616	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	83
PID 412 wrote to memory of 5096	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	87
PID 412 wrote to memory of 5096	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	87
PID 412 wrote to memory of 5096	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	87
PID 412 wrote to memory of 3504	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	89
PID 412 wrote to memory of 3504	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	89
PID 412 wrote to memory of 3504	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	89
PID 412 wrote to memory of 1852	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	93
PID 412 wrote to memory of 1852	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	93
PID 412 wrote to memory of 1852	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	93
PID 412 wrote to memory of 5056	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	95
PID 412 wrote to memory of 5056	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	95
PID 412 wrote to memory of 5056	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	95
PID 412 wrote to memory of 3568	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	98
PID 412 wrote to memory of 3568	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	98
PID 412 wrote to memory of 3568	412	2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe	98
PID 4932 wrote to memory of 4356	4932	eyypajac.exe	102
PID 4932 wrote to memory of 4356	4932	eyypajac.exe	102
PID 4932 wrote to memory of 4356	4932	eyypajac.exe	102
PID 4932 wrote to memory of 4356	4932	eyypajac.exe	102
PID 4932 wrote to memory of 4356	4932	eyypajac.exe	102

C:\Users\Admin\AppData\Local\Temp\2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:412
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lyinilei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eyypajac.exe" C:\Windows\SysWOW64\lyinilei\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lyinilei binPath= "C:\Windows\SysWOW64\lyinilei\eyypajac.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lyinilei "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lyinilei
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5056
- 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:3568
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 412 -s 1032
  2⤵
  - Program crash
  PID:3660

C:\Windows\SysWOW64\lyinilei\eyypajac.exe
C:\Windows\SysWOW64\lyinilei\eyypajac.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-26_cf1ee4c0d22d48ebd7ba5de6d28e37ff_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4932
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4932 -s 516
  2⤵
  - Program crash
  PID:3648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 412 -ip 412
1⤵
PID:4868

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 4932 -ip 4932
1⤵
PID:4760

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\eyypajac.exe

Filesize
14.5MB

MD5
2249cef1333eff73514f42adad7ea019

SHA1
775d2a02ca747114f0d30692ed77d880dc7d755d

SHA256
89eead8658c825bdcb6f4ea1b7fc47658fb6b96d906d266068a8a2e9f61cf2e1

SHA512
c0e99990e8718a9e906e142e72a5b0ba2dcdc367f88f5f9300a021e28a614d3cec5e40c6c411bea08a4b6692e8b82d399e32ccdebe13eda705ea6ac7b9f7abca

Download Submit
memory/412-1-0x0000000002E70000-0x0000000002F70000-memory.dmp

Filesize
1024KB

Download
memory/412-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/412-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/412-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/412-12-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/412-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4356-8-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/4356-14-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/4356-15-0x00000000004C0000-0x00000000004D5000-memory.dmp

Filesize
84KB

Download
memory/4932-10-0x0000000000400000-0x0000000002DC3000-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