tofsee | 548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2024, 04:34

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General

Target
JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe
Size 234KB
Sample241230-e63zpaykdl
SHA256 548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb
MD5 8c7a19e279b6a8669251eca874339471
SHA1 130983b4e6961e673c092a78d6c8508cc4106c92
SHA512 47e953b9296caf050f2c4e90ca8f2b3bcc4798d0b060a8675c6face0550925c206726da20e8f2c4a97dab87cd35bb65f0ae4e3696ad690b122e856e94172fc0b
SSDEEP 6144:bZRil6yf92g8+IU9XLBuzbgwujigaLwVf:bZRioyf8gxIUlBunnb
MD5 SHA1 SHA512 SSDEEP

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
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
1172	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\mhnuchsb\ImagePath = "C:\\Windows\\SysWOW64\\mhnuchsb\\gznzrlna.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe

Deletes itself 1 IoCs

pid	Process
2652	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3020	gznzrlna.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3020 set thread context of 2652	3020	gznzrlna.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
1716	sc.exe
3948	sc.exe
3476	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.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	svchost.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	gznzrlna.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4152 wrote to memory of 3532	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	83
PID 4152 wrote to memory of 3532	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	83
PID 4152 wrote to memory of 3532	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	83
PID 4152 wrote to memory of 1992	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	85
PID 4152 wrote to memory of 1992	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	85
PID 4152 wrote to memory of 1992	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	85
PID 4152 wrote to memory of 1716	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	87
PID 4152 wrote to memory of 1716	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	87
PID 4152 wrote to memory of 1716	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	87
PID 4152 wrote to memory of 3948	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	89
PID 4152 wrote to memory of 3948	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	89
PID 4152 wrote to memory of 3948	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	89
PID 4152 wrote to memory of 3476	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	92
PID 4152 wrote to memory of 3476	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	92
PID 4152 wrote to memory of 3476	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	92
PID 4152 wrote to memory of 1172	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	95
PID 4152 wrote to memory of 1172	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	95
PID 4152 wrote to memory of 1172	4152	JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe	95
PID 3020 wrote to memory of 2652	3020	gznzrlna.exe	97
PID 3020 wrote to memory of 2652	3020	gznzrlna.exe	97
PID 3020 wrote to memory of 2652	3020	gznzrlna.exe	97
PID 3020 wrote to memory of 2652	3020	gznzrlna.exe	97
PID 3020 wrote to memory of 2652	3020	gznzrlna.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mhnuchsb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3532
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gznzrlna.exe" C:\Windows\SysWOW64\mhnuchsb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mhnuchsb binPath= "C:\Windows\SysWOW64\mhnuchsb\gznzrlna.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mhnuchsb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mhnuchsb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3476
- 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:1172

C:\Windows\SysWOW64\mhnuchsb\gznzrlna.exe
C:\Windows\SysWOW64\mhnuchsb\gznzrlna.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_548f5ce73f4e42e6912d1ffcc66b50d987e5b6dd90ce63f0c3feb6d68cfe0fbb.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3020
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2652

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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gznzrlna.exe

Path C:\Users\Admin\AppData\Local\Temp\gznzrlna.exe
Size 11.5MB
SHA256 00cbcf7a41ac6acf4403a70dee5f15ccdc3a9a0d3776788daad0a131ca63efde
MD5 4031ff90a4b71fa8b1d8000431fb7692
SHA1 fa88817a5afa8297d1f089e4082a1e2fe37cf329
SHA512 a05e430d927d128ff24734c0667e1d6ca92f65ab64cb5535f77a7d703b24cf11ec453b88ace36470f1cfde5ea207a625c8a3512a93a75e701e6e426c686bf17b
SSDEEP 24576:mRw0hUlKbEKbEKbEKbEKbEKbEKbEKbEKbEKbEKbEKbEKbEKbEKbEKbEKbEKbEKb/:mR7
MD5 SHA1 SHA512 SSDEEP

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memory/2652-12-0x0000000000410000-0x0000000000425000-memory.dmp

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memory/2652-20-0x0000000000410000-0x0000000000425000-memory.dmp

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memory/2652-19-0x0000000000410000-0x0000000000425000-memory.dmp

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memory/2652-16-0x0000000000410000-0x0000000000425000-memory.dmp

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memory/2652-15-0x0000000000410000-0x0000000000425000-memory.dmp

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memory/3020-10-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/3020-11-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/3020-18-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/4152-6-0x0000000000400000-0x0000000000444000-memory.dmp

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memory/4152-0-0x0000000002050000-0x000000000205D000-memory.dmp

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memory/4152-7-0x0000000002050000-0x000000000205D000-memory.dmp

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memory/4152-8-0x0000000002060000-0x0000000002073000-memory.dmp

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memory/4152-9-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4152-2-0x0000000000400000-0x0000000000415000-memory.dmp

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memory/4152-1-0x0000000002060000-0x0000000002073000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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