tofsee | e8ae4d92a862230549c7d6f0992f2d83f07520c6716f0db33710a09dfe3f4c04

Analysis

max time kernel
146s
max time network
118s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
02-12-2024 17:55

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General

Target

2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe
Size

11.0MB
MD5

381220f55364f3e5f8b90d364c4e261e
SHA1

93afa3203eb7a1031f934fcac6f9d8b0989a8aa3
SHA256

e8ae4d92a862230549c7d6f0992f2d83f07520c6716f0db33710a09dfe3f4c04
SHA512

9be95c05b73f786203a8d3945f081a24c9c4ac6fb3665a57ea212a108c15070aad6fe2c70906231bdb4132d6f557fdecbbe91e3fe26e7b18b8f1971e08d089ad
SSDEEP

6144:tXxZs2EcxJ8GD96ySzTVaFRFX53ncNnUUMMMMMMMMb5:tXzuKJ8GD96ySzTcANnQMMMMMMMb

Score

10^/10

tofsee discovery evasion 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

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\iafuhxqv = "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

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2860	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\iafuhxqv\ImagePath = "C:\\Windows\\SysWOW64\\iafuhxqv\\nlsonwul.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2912	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2780	nlsonwul.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2780 set thread context of 2912	2780	nlsonwul.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2588	sc.exe
2836	sc.exe
2520	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nlsonwul.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 2580	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	30
PID 2556 wrote to memory of 2580	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	30
PID 2556 wrote to memory of 2580	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	30
PID 2556 wrote to memory of 2580	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	30
PID 2556 wrote to memory of 1920	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	32
PID 2556 wrote to memory of 1920	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	32
PID 2556 wrote to memory of 1920	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	32
PID 2556 wrote to memory of 1920	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	32
PID 2556 wrote to memory of 2588	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	34
PID 2556 wrote to memory of 2588	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	34
PID 2556 wrote to memory of 2588	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	34
PID 2556 wrote to memory of 2588	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	34
PID 2556 wrote to memory of 2836	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	36
PID 2556 wrote to memory of 2836	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	36
PID 2556 wrote to memory of 2836	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	36
PID 2556 wrote to memory of 2836	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	36
PID 2556 wrote to memory of 2520	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	38
PID 2556 wrote to memory of 2520	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	38
PID 2556 wrote to memory of 2520	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	38
PID 2556 wrote to memory of 2520	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	38
PID 2556 wrote to memory of 2860	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	41
PID 2556 wrote to memory of 2860	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	41
PID 2556 wrote to memory of 2860	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	41
PID 2556 wrote to memory of 2860	2556	2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe	41
PID 2780 wrote to memory of 2912	2780	nlsonwul.exe	43
PID 2780 wrote to memory of 2912	2780	nlsonwul.exe	43
PID 2780 wrote to memory of 2912	2780	nlsonwul.exe	43
PID 2780 wrote to memory of 2912	2780	nlsonwul.exe	43
PID 2780 wrote to memory of 2912	2780	nlsonwul.exe	43
PID 2780 wrote to memory of 2912	2780	nlsonwul.exe	43

C:\Users\Admin\AppData\Local\Temp\2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iafuhxqv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2580
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nlsonwul.exe" C:\Windows\SysWOW64\iafuhxqv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1920
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iafuhxqv binPath= "C:\Windows\SysWOW64\iafuhxqv\nlsonwul.exe /d\"C:\Users\Admin\AppData\Local\Temp\2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iafuhxqv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iafuhxqv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2520
- 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:2860

C:\Windows\SysWOW64\iafuhxqv\nlsonwul.exe
C:\Windows\SysWOW64\iafuhxqv\nlsonwul.exe /d"C:\Users\Admin\AppData\Local\Temp\2024-12-02_381220f55364f3e5f8b90d364c4e261e_karagany_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2780
- 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:2912

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\nlsonwul.exe

Filesize
10.5MB

MD5
68bd82edde0d0507e844447fe8da08f1

SHA1
786e5be3924678a085233616ac7eaf56279e4c55

SHA256
1b622ab86fc2a72330ccdbcc7577f4568e6cdbaed9a83aec94d5f7a7b60c2bac

SHA512
d188d69953759f0c5984aae69f4d856fec7d9e59449df69d1ace11ca9c74d8ed33523d5741c489457bd44a371beaa10e4af6033bca7ed5e8481109c19d6f48f8

Download Submit
memory/2556-8-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/2556-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2556-2-0x00000000003C0000-0x00000000003D3000-memory.dmp

Filesize
76KB

Download
memory/2556-7-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2556-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2556-1-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download
memory/2780-15-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/2912-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2912-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2912-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2912-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2912-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2912-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads