tofsee | ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
24-11-2024 20:02

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General

Target

ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe
Size

291KB
MD5

1a6ce36ee783de5148f2c0817ac6dabe
SHA1

fa957807a9fe6a0de8f959b3c67a3365eac569a7
SHA256

ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e
SHA512

6fd759a69ce43798a3b43efe578f36923f1e67a8f8969d6f593fd29d442c76d72632a6b8679b679deb6e3f62aa0577eeb13e3938182918adbf247ce2c2822305
SSDEEP

6144:HbDiEbQtM055szCZb55JgXrSXuZet0yob7PANco+hOgw:UM450a55G7SXuZet0yob7Ro+Fw

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.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\ckxgfgbb = "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
2920	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\ckxgfgbb\ImagePath = "C:\\Windows\\SysWOW64\\ckxgfgbb\\jpknwffa.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2680	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3028	jpknwffa.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3028 set thread context of 2680	3028	jpknwffa.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2468	sc.exe
2852	sc.exe
2784	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	jpknwffa.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	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2256	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	29
PID 2220 wrote to memory of 2256	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	29
PID 2220 wrote to memory of 2256	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	29
PID 2220 wrote to memory of 2256	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	29
PID 2220 wrote to memory of 276	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	31
PID 2220 wrote to memory of 276	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	31
PID 2220 wrote to memory of 276	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	31
PID 2220 wrote to memory of 276	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	31
PID 2220 wrote to memory of 2468	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	33
PID 2220 wrote to memory of 2468	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	33
PID 2220 wrote to memory of 2468	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	33
PID 2220 wrote to memory of 2468	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	33
PID 2220 wrote to memory of 2852	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	35
PID 2220 wrote to memory of 2852	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	35
PID 2220 wrote to memory of 2852	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	35
PID 2220 wrote to memory of 2852	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	35
PID 2220 wrote to memory of 2784	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	37
PID 2220 wrote to memory of 2784	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	37
PID 2220 wrote to memory of 2784	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	37
PID 2220 wrote to memory of 2784	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	37
PID 2220 wrote to memory of 2920	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	40
PID 2220 wrote to memory of 2920	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	40
PID 2220 wrote to memory of 2920	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	40
PID 2220 wrote to memory of 2920	2220	ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe	40
PID 3028 wrote to memory of 2680	3028	jpknwffa.exe	42
PID 3028 wrote to memory of 2680	3028	jpknwffa.exe	42
PID 3028 wrote to memory of 2680	3028	jpknwffa.exe	42
PID 3028 wrote to memory of 2680	3028	jpknwffa.exe	42
PID 3028 wrote to memory of 2680	3028	jpknwffa.exe	42
PID 3028 wrote to memory of 2680	3028	jpknwffa.exe	42

C:\Users\Admin\AppData\Local\Temp\ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe
"C:\Users\Admin\AppData\Local\Temp\ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ckxgfgbb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jpknwffa.exe" C:\Windows\SysWOW64\ckxgfgbb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:276
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ckxgfgbb binPath= "C:\Windows\SysWOW64\ckxgfgbb\jpknwffa.exe /d\"C:\Users\Admin\AppData\Local\Temp\ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ckxgfgbb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2852
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ckxgfgbb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2784
- 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:2920

C:\Windows\SysWOW64\ckxgfgbb\jpknwffa.exe
C:\Windows\SysWOW64\ckxgfgbb\jpknwffa.exe /d"C:\Users\Admin\AppData\Local\Temp\ac3366999fcb9a093c9aa8694c6c9c915c3539478efd08655893d26b1d61a86e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3028
- 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:2680

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\jpknwffa.exe

Filesize
13.1MB

MD5
db7c5d37f3e34ed1711de523ab1fb473

SHA1
697bb94c18784a53706e22aec2626407b01062b8

SHA256
55c99abc8664dea11bd2d5eda322a643da843ab5f14c2546264d0c8d20e0bd0c

SHA512
156a9d6b81d5d1f43de4a83e555e4cfdd6645d07554d3ba703956b34576e1171b5b3dcfb07282108660594d68b5a0c97b4c369fa452567f5aec6b8d694cf8f96

Download Submit
memory/2220-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2220-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2220-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2220-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2220-9-0x0000000002C30000-0x0000000002D30000-memory.dmp

Filesize
1024KB

Download
memory/2220-1-0x0000000002C30000-0x0000000002D30000-memory.dmp

Filesize
1024KB

Download
memory/2220-7-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/2680-17-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2680-15-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2680-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2680-12-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/2680-19-0x0000000000100000-0x0000000000115000-memory.dmp

Filesize
84KB

Download
memory/3028-18-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads