tofsee | a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72

General

Target

JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe
Size

187KB
MD5

c153d4e45afbdee5133affb67a3acb66
SHA1

35b42f301e9fc6d6eaaf5ef294f3da3e9a8aa584
SHA256

a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72
SHA512

1a7d3f1b97ea11589eb8669ce09e98e8f94b7d2e13bc1b35868342080dd10f288d8a116d913e50a3f1c6065833604d13778ae781aca1fd6d629b9c97ff3d11d5
SSDEEP

3072:z7QkTvI0pZG/xfCcBzzNoCv+l2k80O2rMQEeUpZa9uD6Vdyhkf:g+vI0pZG/xfCANoCGAqrhUwVf

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
3808	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\nvrbfmdi\ImagePath = "C:\\Windows\\SysWOW64\\nvrbfmdi\\ohvhztvi.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe

Deletes itself 1 IoCs

pid	Process
1624	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1936	ohvhztvi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1936 set thread context of 1624	1936	ohvhztvi.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
4236	sc.exe
3588	sc.exe
3464	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ohvhztvi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.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 4652 wrote to memory of 1812	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	82
PID 4652 wrote to memory of 1812	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	82
PID 4652 wrote to memory of 1812	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	82
PID 4652 wrote to memory of 1544	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	84
PID 4652 wrote to memory of 1544	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	84
PID 4652 wrote to memory of 1544	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	84
PID 4652 wrote to memory of 4236	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	86
PID 4652 wrote to memory of 4236	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	86
PID 4652 wrote to memory of 4236	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	86
PID 4652 wrote to memory of 3588	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	88
PID 4652 wrote to memory of 3588	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	88
PID 4652 wrote to memory of 3588	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	88
PID 4652 wrote to memory of 3464	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	90
PID 4652 wrote to memory of 3464	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	90
PID 4652 wrote to memory of 3464	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	90
PID 4652 wrote to memory of 3808	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	93
PID 4652 wrote to memory of 3808	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	93
PID 4652 wrote to memory of 3808	4652	JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe	93
PID 1936 wrote to memory of 1624	1936	ohvhztvi.exe	95
PID 1936 wrote to memory of 1624	1936	ohvhztvi.exe	95
PID 1936 wrote to memory of 1624	1936	ohvhztvi.exe	95
PID 1936 wrote to memory of 1624	1936	ohvhztvi.exe	95
PID 1936 wrote to memory of 1624	1936	ohvhztvi.exe	95

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nvrbfmdi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ohvhztvi.exe" C:\Windows\SysWOW64\nvrbfmdi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1544
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nvrbfmdi binPath= "C:\Windows\SysWOW64\nvrbfmdi\ohvhztvi.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4236
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nvrbfmdi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nvrbfmdi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3464
- 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:3808

C:\Windows\SysWOW64\nvrbfmdi\ohvhztvi.exe
C:\Windows\SysWOW64\nvrbfmdi\ohvhztvi.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a0d3389c0f14bfe059cafd173cd45761fb0777d8e1057313c31a772939587f72.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1624

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ohvhztvi.exe

Filesize
12.5MB

MD5
c4743aede0337860db83af6758affdf5

SHA1
1a9cca602b939e02440443e27b98b43bebb53411

SHA256
c6080ce494311000b2d03d85e24eb5ed30c117919b364b91d470b03d0836a7cc

SHA512
4a948796cd86087a48c8b20cc5a18647832a234f54f018368cb9361975e07b757d1a8a59ae60892cc514d5a1b47667be2b89164f2cffcb6d67a1afd54710837e

Download Submit
memory/1624-13-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/1624-18-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/1624-17-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/1936-10-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1936-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1936-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1936-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4652-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4652-8-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download
memory/4652-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4652-0-0x00000000005E0000-0x00000000005ED000-memory.dmp

Filesize
52KB

Download
memory/4652-7-0x00000000005E0000-0x00000000005ED000-memory.dmp

Filesize
52KB

Download
memory/4652-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4652-1-0x00000000021A0000-0x00000000021B3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads