tofsee | 98ea3d57064e121e454209ef7c15e6571d4d24a8194e635dfe46df99ef56c0f1

Analysis

max time kernel
144s
max time network
120s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
27/01/2025, 11:17

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General

Target

2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe
Size

12.5MB
MD5

d8af0d10b9e34488660938c793da32bb
SHA1

e62ece930116d75b30401b0212bba86b2bf2b8c7
SHA256

98ea3d57064e121e454209ef7c15e6571d4d24a8194e635dfe46df99ef56c0f1
SHA512

76a82f0e82436ada650b639d6a4e4f6f0a899239888de1950f7c8d03a0c8a67b1ca2b035b2825d0f047cfdbd062651d4bdb3bfc3141e603dc9b876de64b7fd68
SSDEEP

393216:8XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX3:

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

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

Windows security bypass 2 TTPs 1 IoCs

defense_evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\ybgynqhr = "0"	svchost.exe

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
2712	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\ybgynqhr\ImagePath = "C:\\Windows\\SysWOW64\\ybgynqhr\\amlzkucw.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2976	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2156	amlzkucw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2156 set thread context of 2976	2156	amlzkucw.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
3000	sc.exe
2804	sc.exe
2888	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 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	2025-01-27_d8af0d10b9e34488660938c793da32bb_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	amlzkucw.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2588 wrote to memory of 1508	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	31
PID 2588 wrote to memory of 1508	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	31
PID 2588 wrote to memory of 1508	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	31
PID 2588 wrote to memory of 1508	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	31
PID 2588 wrote to memory of 2496	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	33
PID 2588 wrote to memory of 2496	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	33
PID 2588 wrote to memory of 2496	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	33
PID 2588 wrote to memory of 2496	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	33
PID 2588 wrote to memory of 3000	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	35
PID 2588 wrote to memory of 3000	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	35
PID 2588 wrote to memory of 3000	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	35
PID 2588 wrote to memory of 3000	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	35
PID 2588 wrote to memory of 2804	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	37
PID 2588 wrote to memory of 2804	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	37
PID 2588 wrote to memory of 2804	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	37
PID 2588 wrote to memory of 2804	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	37
PID 2588 wrote to memory of 2888	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	39
PID 2588 wrote to memory of 2888	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	39
PID 2588 wrote to memory of 2888	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	39
PID 2588 wrote to memory of 2888	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	39
PID 2156 wrote to memory of 2976	2156	amlzkucw.exe	42
PID 2156 wrote to memory of 2976	2156	amlzkucw.exe	42
PID 2156 wrote to memory of 2976	2156	amlzkucw.exe	42
PID 2156 wrote to memory of 2976	2156	amlzkucw.exe	42
PID 2156 wrote to memory of 2976	2156	amlzkucw.exe	42
PID 2156 wrote to memory of 2976	2156	amlzkucw.exe	42
PID 2588 wrote to memory of 2712	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	43
PID 2588 wrote to memory of 2712	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	43
PID 2588 wrote to memory of 2712	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	43
PID 2588 wrote to memory of 2712	2588	2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2588
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ybgynqhr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\amlzkucw.exe" C:\Windows\SysWOW64\ybgynqhr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ybgynqhr binPath= "C:\Windows\SysWOW64\ybgynqhr\amlzkucw.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3000
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ybgynqhr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ybgynqhr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2888
- 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:2712

C:\Windows\SysWOW64\ybgynqhr\amlzkucw.exe
C:\Windows\SysWOW64\ybgynqhr\amlzkucw.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-27_d8af0d10b9e34488660938c793da32bb_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
12.3MB

MD5
e55f7bcec40b40a6dd1823fdc6c88b9a

SHA1
24522fa9036ff158278433d67cf0d6a139c3f15c

SHA256
ba9747e26f31479ffdee407e7904e19375f38e1b51b61886b7f40b50e0baefed

SHA512
c37999e277568bc0bd4f3362189186992dd610ce4d0994871b913f18e764c0344c80c0d351f0f6298eea283d05c26161ce17c4585bab874b5fca83eb04fd06d2

Download Submit
memory/2156-12-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2588-14-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2588-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2588-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/2588-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2588-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2588-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2976-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2976-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2976-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads