tofsee | fc21c2099b131258186e137fc0b755cbe33b1c3f5fc96f3e1345bf9db4a5535e

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
05-01-2025 07:46

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General

Target

JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe
Size

11.0MB
MD5

955cae2b97e363277394e684c1b3ff10
SHA1

62122067a9c6d464e5bec9012ff77fdf6ffc1dba
SHA256

fc21c2099b131258186e137fc0b755cbe33b1c3f5fc96f3e1345bf9db4a5535e
SHA512

011a62a7ceb84abbdaf1a917bb8b1f3f9fabac6941b8331f54c0b8a670740eaad0adb9f1af90c102787ae0a7248795d9953185102242525483f8c5e44be949fb
SSDEEP

6144:WnYxnXboLAkQbueUH2KrDzFmN+xgGpXAB0ZO:zXMLLhH2AzHgGpXAB0

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\gmedbdma = "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
2832	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\gmedbdma\ImagePath = "C:\\Windows\\SysWOW64\\gmedbdma\\kmgvrnja.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2812	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2720	kmgvrnja.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 2812	2720	kmgvrnja.exe	44

Launches sc.exe 3 IoCs

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

pid	Process
2424	sc.exe
2696	sc.exe
2788	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	kmgvrnja.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 1636	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	31
PID 2252 wrote to memory of 1636	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	31
PID 2252 wrote to memory of 1636	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	31
PID 2252 wrote to memory of 1636	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	31
PID 2252 wrote to memory of 2764	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	33
PID 2252 wrote to memory of 2764	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	33
PID 2252 wrote to memory of 2764	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	33
PID 2252 wrote to memory of 2764	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	33
PID 2252 wrote to memory of 2424	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	35
PID 2252 wrote to memory of 2424	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	35
PID 2252 wrote to memory of 2424	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	35
PID 2252 wrote to memory of 2424	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	35
PID 2252 wrote to memory of 2696	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	37
PID 2252 wrote to memory of 2696	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	37
PID 2252 wrote to memory of 2696	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	37
PID 2252 wrote to memory of 2696	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	37
PID 2252 wrote to memory of 2788	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	39
PID 2252 wrote to memory of 2788	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	39
PID 2252 wrote to memory of 2788	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	39
PID 2252 wrote to memory of 2788	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	39
PID 2252 wrote to memory of 2832	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	42
PID 2252 wrote to memory of 2832	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	42
PID 2252 wrote to memory of 2832	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	42
PID 2252 wrote to memory of 2832	2252	JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe	42
PID 2720 wrote to memory of 2812	2720	kmgvrnja.exe	44
PID 2720 wrote to memory of 2812	2720	kmgvrnja.exe	44
PID 2720 wrote to memory of 2812	2720	kmgvrnja.exe	44
PID 2720 wrote to memory of 2812	2720	kmgvrnja.exe	44
PID 2720 wrote to memory of 2812	2720	kmgvrnja.exe	44
PID 2720 wrote to memory of 2812	2720	kmgvrnja.exe	44

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gmedbdma\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kmgvrnja.exe" C:\Windows\SysWOW64\gmedbdma\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gmedbdma binPath= "C:\Windows\SysWOW64\gmedbdma\kmgvrnja.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2424
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gmedbdma "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gmedbdma
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2788
- 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:2832

C:\Windows\SysWOW64\gmedbdma\kmgvrnja.exe
C:\Windows\SysWOW64\gmedbdma\kmgvrnja.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_955cae2b97e363277394e684c1b3ff10.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2720
- 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:2812

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\kmgvrnja.exe

Filesize
12.0MB

MD5
36e6488baa29233e054b557cb174dda9

SHA1
4a896b1af9a45618b0c536a9c0bc91017e079f6e

SHA256
294fdb8f2547593bbe30e1380368c987f95c7a5776916a17e9a2fe0027d97bfd

SHA512
839bcbb9e6b0b1e66bccde2cbda5135fc850e5508193164b6d3fddc23d15a1f75980f712b72181953af815de90fb7de7d381235e67aa06dfe2789cb87aad428a

Download Submit
memory/2252-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2252-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2252-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2252-8-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/2252-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2252-1-0x0000000001790000-0x0000000001890000-memory.dmp

Filesize
1024KB

Download
memory/2720-16-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/2812-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2812-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2812-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2812-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2812-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads