tofsee | 90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
29/12/2024, 02:01

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General

Target
JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe
Size 238KB
Sample241229-cftbfsypgj
SHA256 90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684
MD5 6308912dbac2a0b3bb83a38428b05928
SHA1 95ae34a688611808b01c1994cdbced788273325d
SHA512 c013c50c0796576bc6a1b581b88e080ebc63a1089c2937527c56b5edbd5aff9a2f1042e9e275736a51a4df48f13efcfa286cbf13b8f59cb5821cb22e31279114
SSDEEP 6144:LMfeF3QoSEUI692A/Im7sseZfG+ZH2KsItnT:Lu0goSEo9226X3WKF
MD5 SHA1 SHA512 SSDEEP

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
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
2316	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\nkpkvgtd\ImagePath = "C:\\Windows\\SysWOW64\\nkpkvgtd\\lxspwvvj.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe

Deletes itself 1 IoCs

pid	Process
2980	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3260	lxspwvvj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3260 set thread context of 2980	3260	lxspwvvj.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
2932	sc.exe
2504	sc.exe
2004	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	lxspwvvj.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	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4808 wrote to memory of 3500	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	82
PID 4808 wrote to memory of 3500	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	82
PID 4808 wrote to memory of 3500	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	82
PID 4808 wrote to memory of 2928	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	84
PID 4808 wrote to memory of 2928	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	84
PID 4808 wrote to memory of 2928	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	84
PID 4808 wrote to memory of 2932	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	86
PID 4808 wrote to memory of 2932	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	86
PID 4808 wrote to memory of 2932	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	86
PID 4808 wrote to memory of 2504	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	88
PID 4808 wrote to memory of 2504	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	88
PID 4808 wrote to memory of 2504	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	88
PID 4808 wrote to memory of 2004	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	90
PID 4808 wrote to memory of 2004	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	90
PID 4808 wrote to memory of 2004	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	90
PID 4808 wrote to memory of 2316	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	93
PID 4808 wrote to memory of 2316	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	93
PID 4808 wrote to memory of 2316	4808	JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe	93
PID 3260 wrote to memory of 2980	3260	lxspwvvj.exe	95
PID 3260 wrote to memory of 2980	3260	lxspwvvj.exe	95
PID 3260 wrote to memory of 2980	3260	lxspwvvj.exe	95
PID 3260 wrote to memory of 2980	3260	lxspwvvj.exe	95
PID 3260 wrote to memory of 2980	3260	lxspwvvj.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nkpkvgtd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lxspwvvj.exe" C:\Windows\SysWOW64\nkpkvgtd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2928
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nkpkvgtd binPath= "C:\Windows\SysWOW64\nkpkvgtd\lxspwvvj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nkpkvgtd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nkpkvgtd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2004
- 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:2316

C:\Windows\SysWOW64\nkpkvgtd\lxspwvvj.exe
C:\Windows\SysWOW64\nkpkvgtd\lxspwvvj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_90601a67e1ff329483cdb59a6e76125533415bad9a395ed3e09d7f00da5c3684.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3260
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2980

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

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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lxspwvvj.exe

Path C:\Users\Admin\AppData\Local\Temp\lxspwvvj.exe
Size 13.9MB
SHA256 c01aebeaf543d084440442ababf477019b59eab4ce35d8ac0f61dada10c85416
MD5 5843723058573ad5925855299a65b96e
SHA1 6291df053c46b0f03e0e57e566a9ccada0fa6e93
SHA512 9cf0348a4afad3dc47d12c9ba284a6953f9a112dab3677edba8a3d311bed9f03cf5030e76f8716a9eb92c2544cf2affe61486826ce751e5b3db8ccbb91e0db94
SSDEEP 6144:NMfeF3QoSEUI692A/Im7sseZfG+ZH2KsItnT:Nu0goSEo9226X3WKF
MD5 SHA1 SHA512 SSDEEP

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memory/2980-11-0x0000000000670000-0x0000000000685000-memory.dmp

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memory/2980-18-0x0000000000670000-0x0000000000685000-memory.dmp

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memory/2980-17-0x0000000000670000-0x0000000000685000-memory.dmp

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memory/3260-15-0x0000000000400000-0x000000000086B000-memory.dmp

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memory/3260-14-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/3260-12-0x0000000000400000-0x000000000086B000-memory.dmp

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memory/4808-10-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4808-9-0x0000000000CC0000-0x0000000000CD3000-memory.dmp

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memory/4808-8-0x0000000000400000-0x000000000086B000-memory.dmp

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memory/4808-1-0x0000000000960000-0x0000000000A60000-memory.dmp

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memory/4808-3-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4808-2-0x0000000000CC0000-0x0000000000CD3000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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