tofsee | b93a47f6924dbe4309eb656760e3edeafdd38061e8ef9add06598f95871260b6

General

Target

JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe
Size

12.9MB
MD5

92017ee762ffecb801be76e272ef66b5
SHA1

0171f93700ce9e398725ad857e7384031581846e
SHA256

b93a47f6924dbe4309eb656760e3edeafdd38061e8ef9add06598f95871260b6
SHA512

1701ed30435153b4b765775aeb68dd1e0751ef2cbc14e7016bcda1933060d881fdeb0a9145e527e29a98bcd3caec23433563d6af73babd3ce33c13242d258d75
SSDEEP

12288:BZwvqm0loTlEUKg7/ua4FXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXn:BSvqmNB/d

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
556	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\givanrsf\ImagePath = "C:\\Windows\\SysWOW64\\givanrsf\\hbkuhkpb.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe

Deletes itself 1 IoCs

pid	Process
3204	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3076	hbkuhkpb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3076 set thread context of 3204	3076	hbkuhkpb.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3500	sc.exe
3124	sc.exe
3408	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5040	3672	WerFault.exe	82
3108	3076	WerFault.exe	94

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_92017ee762ffecb801be76e272ef66b5.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
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	hbkuhkpb.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 1180	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	83
PID 3672 wrote to memory of 1180	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	83
PID 3672 wrote to memory of 1180	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	83
PID 3672 wrote to memory of 2736	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	85
PID 3672 wrote to memory of 2736	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	85
PID 3672 wrote to memory of 2736	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	85
PID 3672 wrote to memory of 3500	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	87
PID 3672 wrote to memory of 3500	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	87
PID 3672 wrote to memory of 3500	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	87
PID 3672 wrote to memory of 3124	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	90
PID 3672 wrote to memory of 3124	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	90
PID 3672 wrote to memory of 3124	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	90
PID 3672 wrote to memory of 3408	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	92
PID 3672 wrote to memory of 3408	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	92
PID 3672 wrote to memory of 3408	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	92
PID 3672 wrote to memory of 556	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	95
PID 3672 wrote to memory of 556	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	95
PID 3672 wrote to memory of 556	3672	JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe	95
PID 3076 wrote to memory of 3204	3076	hbkuhkpb.exe	101
PID 3076 wrote to memory of 3204	3076	hbkuhkpb.exe	101
PID 3076 wrote to memory of 3204	3076	hbkuhkpb.exe	101
PID 3076 wrote to memory of 3204	3076	hbkuhkpb.exe	101
PID 3076 wrote to memory of 3204	3076	hbkuhkpb.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\givanrsf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1180
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hbkuhkpb.exe" C:\Windows\SysWOW64\givanrsf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2736
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create givanrsf binPath= "C:\Windows\SysWOW64\givanrsf\hbkuhkpb.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description givanrsf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3124
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start givanrsf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3408
- 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:556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 1172
  2⤵
  - Program crash
  PID:5040

C:\Windows\SysWOW64\givanrsf\hbkuhkpb.exe
C:\Windows\SysWOW64\givanrsf\hbkuhkpb.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_92017ee762ffecb801be76e272ef66b5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3076 -s 516
  2⤵
  - Program crash
  PID:3108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3672 -ip 3672
1⤵
PID:4976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3076 -ip 3076
1⤵
PID:4012

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\hbkuhkpb.exe

Filesize
14.7MB

MD5
f43d9b5d1bf5257087b3d0136d6ca321

SHA1
7dec4c7ed2f9611869d17a918cc9dbe0f3fd0b48

SHA256
55f0e14365a187b0e30440a1e416fd9d99aa96abb38b5c1d9bf338fca9e73a2b

SHA512
9e4ff2b89bee1597021d8f859677c3877aae22176381fbbadde810d5d432e93b065ae91deed491467c17f5a41cbff5cba6e09f93d0dd077ea56e5af4d563d848

Download Submit
memory/3076-9-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3076-17-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3076-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3204-11-0x00000000004D0000-0x00000000004E5000-memory.dmp

Filesize
84KB

Download
memory/3204-18-0x00000000004D0000-0x00000000004E5000-memory.dmp

Filesize
84KB

Download
memory/3204-19-0x00000000004D0000-0x00000000004E5000-memory.dmp

Filesize
84KB

Download
memory/3672-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-14-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3672-13-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3672-10-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download
memory/3672-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3672-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-1-0x0000000000610000-0x0000000000710000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads