tofsee | fb863e1d0182062365f2636b441cb21301cab5c040389c65ab4b2f47b1251e05

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
06-01-2025 18:33

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General

Target

JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe
Size

14.9MB
MD5

33c9724c94bcca8d04231b7b8dba4508
SHA1

b94f9625010efd932e201532b06e78bbc800c434
SHA256

fb863e1d0182062365f2636b441cb21301cab5c040389c65ab4b2f47b1251e05
SHA512

e622c3ae7f08510a708e32e6f10709fe17e853b43b9b432315c3a86a8152c39833ef8539af3c15607b7928cc6134d794df8e32c61aa0d49e8eb8df24cc7f5ab1
SSDEEP

49152:FkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH:

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\ivaictvz = "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
1256	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\ivaictvz\ImagePath = "C:\\Windows\\SysWOW64\\ivaictvz\\zbvkgcyp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1360	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2732	zbvkgcyp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 1360	2732	zbvkgcyp.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2680	sc.exe
2832	sc.exe
2228	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	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.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	cmd.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	zbvkgcyp.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 296 wrote to memory of 2780	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	30
PID 296 wrote to memory of 2780	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	30
PID 296 wrote to memory of 2780	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	30
PID 296 wrote to memory of 2780	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	30
PID 296 wrote to memory of 2136	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	32
PID 296 wrote to memory of 2136	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	32
PID 296 wrote to memory of 2136	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	32
PID 296 wrote to memory of 2136	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	32
PID 296 wrote to memory of 2680	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	34
PID 296 wrote to memory of 2680	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	34
PID 296 wrote to memory of 2680	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	34
PID 296 wrote to memory of 2680	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	34
PID 296 wrote to memory of 2832	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	36
PID 296 wrote to memory of 2832	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	36
PID 296 wrote to memory of 2832	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	36
PID 296 wrote to memory of 2832	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	36
PID 296 wrote to memory of 2228	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	38
PID 296 wrote to memory of 2228	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	38
PID 296 wrote to memory of 2228	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	38
PID 296 wrote to memory of 2228	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	38
PID 296 wrote to memory of 1256	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	41
PID 296 wrote to memory of 1256	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	41
PID 296 wrote to memory of 1256	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	41
PID 296 wrote to memory of 1256	296	JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe	41
PID 2732 wrote to memory of 1360	2732	zbvkgcyp.exe	43
PID 2732 wrote to memory of 1360	2732	zbvkgcyp.exe	43
PID 2732 wrote to memory of 1360	2732	zbvkgcyp.exe	43
PID 2732 wrote to memory of 1360	2732	zbvkgcyp.exe	43
PID 2732 wrote to memory of 1360	2732	zbvkgcyp.exe	43
PID 2732 wrote to memory of 1360	2732	zbvkgcyp.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:296
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ivaictvz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2780
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zbvkgcyp.exe" C:\Windows\SysWOW64\ivaictvz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ivaictvz binPath= "C:\Windows\SysWOW64\ivaictvz\zbvkgcyp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ivaictvz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ivaictvz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2228
- 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:1256

C:\Windows\SysWOW64\ivaictvz\zbvkgcyp.exe
C:\Windows\SysWOW64\ivaictvz\zbvkgcyp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_33c9724c94bcca8d04231b7b8dba4508.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- 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:1360

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\zbvkgcyp.exe

Filesize
11.7MB

MD5
0f5be2deff2ed808c4a502d854430a50

SHA1
ea7e4c2313b1fbfc518f839e086b7f795df5d365

SHA256
c399d476a3a50e83b2825eb7d6ba20420f9701c65c39c828992ee61c00e49e73

SHA512
a61ac3fca782c8c18eb3221314bedc783dbebdd632577708bdd239dc6183664aeeaa4ef6592dd42097aee836cc3eb465c5647dfa2d8d2666e9cf55234de7eed9

Download Submit
memory/296-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/296-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/296-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/296-11-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/296-10-0x0000000000870000-0x0000000000970000-memory.dmp

Filesize
1024KB

Download
memory/296-1-0x0000000000870000-0x0000000000970000-memory.dmp

Filesize
1024KB

Download
memory/296-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1360-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1360-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1360-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1360-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1360-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2732-18-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads