tofsee | 1f44bd12254ee5f6bb61ea433d76ab8e00a6f1d8c33e3a9e4abcaba508e1fefe

Analysis

max time kernel
145s
max time network
121s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
21/01/2025, 21:39

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General

Target

2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe
Size

13.7MB
MD5

36ad0603776f34d90e13324ccdf9732b
SHA1

d8248c185a92b9318d70a71804ebca51553f23ed
SHA256

1f44bd12254ee5f6bb61ea433d76ab8e00a6f1d8c33e3a9e4abcaba508e1fefe
SHA512

63679de0e5bafc340ba3d739622f80d4195e65c1631f2e525ea1696a8d6ae3e4f19365e6083ae4bd45cf36796416cce53c650aeaa35d9ff9f85c45f56b27194d
SSDEEP

3072:wLBgXOXcdW8tar7vGdq8c7YMl2b8anmMXnb58XuDP9het3Zv1oSW1za2E+w5C2/Y:NOMdRQr7OB0ypmMXnl8XEPM3noSWOC

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\cxdzbwgr = "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
2224	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\cxdzbwgr\ImagePath = "C:\\Windows\\SysWOW64\\cxdzbwgr\\mktudzok.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2596	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2520	mktudzok.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2520 set thread context of 2596	2520	mktudzok.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2572	sc.exe
2740	sc.exe
2548	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

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	mktudzok.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2025-01-21_36ad0603776f34d90e13324ccdf9732b_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	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 2772 wrote to memory of 2672	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	31
PID 2772 wrote to memory of 2672	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	31
PID 2772 wrote to memory of 2672	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	31
PID 2772 wrote to memory of 2672	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	31
PID 2772 wrote to memory of 2728	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	33
PID 2772 wrote to memory of 2728	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	33
PID 2772 wrote to memory of 2728	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	33
PID 2772 wrote to memory of 2728	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	33
PID 2772 wrote to memory of 2740	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	35
PID 2772 wrote to memory of 2740	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	35
PID 2772 wrote to memory of 2740	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	35
PID 2772 wrote to memory of 2740	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	35
PID 2772 wrote to memory of 2548	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	37
PID 2772 wrote to memory of 2548	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	37
PID 2772 wrote to memory of 2548	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	37
PID 2772 wrote to memory of 2548	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	37
PID 2772 wrote to memory of 2572	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	39
PID 2772 wrote to memory of 2572	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	39
PID 2772 wrote to memory of 2572	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	39
PID 2772 wrote to memory of 2572	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	39
PID 2520 wrote to memory of 2596	2520	mktudzok.exe	42
PID 2520 wrote to memory of 2596	2520	mktudzok.exe	42
PID 2520 wrote to memory of 2596	2520	mktudzok.exe	42
PID 2520 wrote to memory of 2596	2520	mktudzok.exe	42
PID 2520 wrote to memory of 2596	2520	mktudzok.exe	42
PID 2520 wrote to memory of 2596	2520	mktudzok.exe	42
PID 2772 wrote to memory of 2224	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	43
PID 2772 wrote to memory of 2224	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	43
PID 2772 wrote to memory of 2224	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	43
PID 2772 wrote to memory of 2224	2772	2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe	43

C:\Users\Admin\AppData\Local\Temp\2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cxdzbwgr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mktudzok.exe" C:\Windows\SysWOW64\cxdzbwgr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cxdzbwgr binPath= "C:\Windows\SysWOW64\cxdzbwgr\mktudzok.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cxdzbwgr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cxdzbwgr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2572
- 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:2224

C:\Windows\SysWOW64\cxdzbwgr\mktudzok.exe
C:\Windows\SysWOW64\cxdzbwgr\mktudzok.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-21_36ad0603776f34d90e13324ccdf9732b_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- 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:2596

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\mktudzok.exe

Filesize
11.1MB

MD5
1a3be911e35f090b3fd2a85f230e16fe

SHA1
f5cce46f96f0a5c7dee520d8acf6deb68ba8dc42

SHA256
6d5caf3918681a8c313d4ace0d018d2e6b964a154c53620da473932dd1548229

SHA512
8c769c3da404f1856c771d9740e8cc90e766919ded8288e77dea23f475e95247c948394dad44b6dd4244c7fc689b8ded27e959a91ea78aa4086ac0fdbd9da5c8

Download Submit
memory/2520-16-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2596-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2596-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2596-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2596-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2596-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2772-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/2772-3-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download
memory/2772-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2772-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2772-14-0x0000000000400000-0x000000000044E000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads