tofsee | cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a

Analysis

max time kernel
144s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28-12-2024 23:03

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General

Target

JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe
Size

271KB
MD5

94c7198c19c34c0cda20f648f5ddddee
SHA1

55bb7508994c6d934b30426f6de6262c2afcd164
SHA256

cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a
SHA512

eaa8f23d325ad827d9e17274c0381a76665fba56880463b6f7fffbb1c952b7b8b186365a95e64635e5ec231e3a3cf926cb4daaf1a06c62a71c3c3d01bb9220c6
SSDEEP

6144:NlCjpeSS2LqgL6ebgC1zoTjc9JZHLza0UB/4:azS2LqgLdv1y4HLzri

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

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\dbrzcbex = "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
2308	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\dbrzcbex\ImagePath = "C:\\Windows\\SysWOW64\\dbrzcbex\\vawompb.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2576	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2676	vawompb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2676 set thread context of 2576	2676	vawompb.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2824	sc.exe
2268	sc.exe
2656	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vawompb.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2324 wrote to memory of 2184	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	31
PID 2324 wrote to memory of 2184	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	31
PID 2324 wrote to memory of 2184	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	31
PID 2324 wrote to memory of 2184	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	31
PID 2324 wrote to memory of 2372	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	33
PID 2324 wrote to memory of 2372	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	33
PID 2324 wrote to memory of 2372	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	33
PID 2324 wrote to memory of 2372	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	33
PID 2324 wrote to memory of 2268	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	35
PID 2324 wrote to memory of 2268	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	35
PID 2324 wrote to memory of 2268	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	35
PID 2324 wrote to memory of 2268	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	35
PID 2324 wrote to memory of 2656	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	37
PID 2324 wrote to memory of 2656	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	37
PID 2324 wrote to memory of 2656	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	37
PID 2324 wrote to memory of 2656	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	37
PID 2324 wrote to memory of 2824	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	39
PID 2324 wrote to memory of 2824	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	39
PID 2324 wrote to memory of 2824	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	39
PID 2324 wrote to memory of 2824	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	39
PID 2324 wrote to memory of 2308	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	42
PID 2324 wrote to memory of 2308	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	42
PID 2324 wrote to memory of 2308	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	42
PID 2324 wrote to memory of 2308	2324	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	42
PID 2676 wrote to memory of 2576	2676	vawompb.exe	44
PID 2676 wrote to memory of 2576	2676	vawompb.exe	44
PID 2676 wrote to memory of 2576	2676	vawompb.exe	44
PID 2676 wrote to memory of 2576	2676	vawompb.exe	44
PID 2676 wrote to memory of 2576	2676	vawompb.exe	44
PID 2676 wrote to memory of 2576	2676	vawompb.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2324
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dbrzcbex\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2184
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vawompb.exe" C:\Windows\SysWOW64\dbrzcbex\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2372
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dbrzcbex binPath= "C:\Windows\SysWOW64\dbrzcbex\vawompb.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2268
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dbrzcbex "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dbrzcbex
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2824
- 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:2308

C:\Windows\SysWOW64\dbrzcbex\vawompb.exe
C:\Windows\SysWOW64\dbrzcbex\vawompb.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2676
- 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:2576

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\vawompb.exe

Filesize
11.0MB

MD5
4fd277f76a547dc8f72a5fd192fca382

SHA1
d4648d73a3ff7dccd22c8e8b650d0629e4601827

SHA256
bcefc078fe1f19c3bf2088d9a53718c135077e887e70907ea9402b2d338bcb60

SHA512
2538e07cd07444d499f3fe6c82f5fbdc676033c198ee2c992f98569762d5da671f862cc9bdb0f2bdee4128c367cbedb15daa77d57f41084458ac6ff6d2a8a325

Download Submit
memory/2324-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2324-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2324-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2324-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2324-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2324-1-0x0000000000510000-0x0000000000610000-memory.dmp

Filesize
1024KB

Download
memory/2576-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2576-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2576-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2576-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2576-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2676-15-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads