tofsee | da858a7e80ed9cd7777e14c9e635069ffb35b991451f95b33076988a69294ee3

Analysis

max time kernel
144s
max time network
122s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
03-12-2024 12:00

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General

Target

bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe
Size

13.7MB
MD5

bd4b15d59a092096fe26478a1a798762
SHA1

33207cb49fbae9c537309a4894eaec056ae421b6
SHA256

da858a7e80ed9cd7777e14c9e635069ffb35b991451f95b33076988a69294ee3
SHA512

82665fc2a5450d7a2834a9d929d82e6eebfbddcb32db2dfa158f3dd7f6e497377d6f61818e288cda1434ac57ada7c3a2c767d959139439c5b4f9cbac25520d6e
SSDEEP

24576:vl3YWRibbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbX:

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\gopnfixu = "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
2748	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\gopnfixu\ImagePath = "C:\\Windows\\SysWOW64\\gopnfixu\\wexnsphr.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2452	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2680	wexnsphr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2680 set thread context of 2452	2680	wexnsphr.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
3024	sc.exe
2492	sc.exe
2348	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wexnsphr.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2316 wrote to memory of 3052	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	30
PID 2316 wrote to memory of 3052	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	30
PID 2316 wrote to memory of 3052	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	30
PID 2316 wrote to memory of 3052	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	30
PID 2316 wrote to memory of 348	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	32
PID 2316 wrote to memory of 348	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	32
PID 2316 wrote to memory of 348	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	32
PID 2316 wrote to memory of 348	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	32
PID 2316 wrote to memory of 2492	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	34
PID 2316 wrote to memory of 2492	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	34
PID 2316 wrote to memory of 2492	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	34
PID 2316 wrote to memory of 2492	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	34
PID 2316 wrote to memory of 2348	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	36
PID 2316 wrote to memory of 2348	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	36
PID 2316 wrote to memory of 2348	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	36
PID 2316 wrote to memory of 2348	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	36
PID 2316 wrote to memory of 3024	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	38
PID 2316 wrote to memory of 3024	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	38
PID 2316 wrote to memory of 3024	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	38
PID 2316 wrote to memory of 3024	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	38
PID 2316 wrote to memory of 2748	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	41
PID 2316 wrote to memory of 2748	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	41
PID 2316 wrote to memory of 2748	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	41
PID 2316 wrote to memory of 2748	2316	bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe	41
PID 2680 wrote to memory of 2452	2680	wexnsphr.exe	43
PID 2680 wrote to memory of 2452	2680	wexnsphr.exe	43
PID 2680 wrote to memory of 2452	2680	wexnsphr.exe	43
PID 2680 wrote to memory of 2452	2680	wexnsphr.exe	43
PID 2680 wrote to memory of 2452	2680	wexnsphr.exe	43
PID 2680 wrote to memory of 2452	2680	wexnsphr.exe	43

C:\Users\Admin\AppData\Local\Temp\bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gopnfixu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wexnsphr.exe" C:\Windows\SysWOW64\gopnfixu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:348
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gopnfixu binPath= "C:\Windows\SysWOW64\gopnfixu\wexnsphr.exe /d\"C:\Users\Admin\AppData\Local\Temp\bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gopnfixu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2348
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gopnfixu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3024
- 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:2748

C:\Windows\SysWOW64\gopnfixu\wexnsphr.exe
C:\Windows\SysWOW64\gopnfixu\wexnsphr.exe /d"C:\Users\Admin\AppData\Local\Temp\bd4b15d59a092096fe26478a1a798762_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2680
- 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:2452

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\wexnsphr.exe

Filesize
13.4MB

MD5
5dfa332523f31f029771754f57ab3150

SHA1
59f8e9b3a7b46a841f28948550b3dcc21a2997ee

SHA256
caba1ca0051aa25ff902117204dbc786eca87e0e115c37b5c7b0987241d61ea9

SHA512
973fa909933bbdb15fd5783c631101d9a1c98ffd54fb64a4a30bbe5b0f64ad4831ff40f27e7225e761900c9f1b6c2da58464aed40262eb8fe55a6b6088bd0698

Download Submit
memory/2316-0-0x00000000002E0000-0x00000000002E1000-memory.dmp

Filesize
4KB

Download
memory/2316-1-0x00000000002F0000-0x00000000002F1000-memory.dmp

Filesize
4KB

Download
memory/2316-2-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2316-6-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/2452-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2452-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2452-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2680-12-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads