tofsee | d11095d95a0c9af2e1de82b379c7e9d91fe7cd0dc2e282a1681c05a612a17c0d

General

Target

JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe
Size

10.5MB
MD5

b5118669e5f5489e011925958a00c4c9
SHA1

ee80f8191a5f209baa04a73830727a69c8611d07
SHA256

d11095d95a0c9af2e1de82b379c7e9d91fe7cd0dc2e282a1681c05a612a17c0d
SHA512

957bb546ea2c3b2592aa771ea58ad6bd0cfd74539d258f224425f5fe35210edd900ddc2a46317b1e2eb649df975a53f097925008ffb222a88b67f60cb3b0b998
SSDEEP

49152:P2mNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNn:u

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
1260	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\xvbovbe\ImagePath = "C:\\Windows\\SysWOW64\\xvbovbe\\xjebihhv.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe

Deletes itself 1 IoCs

pid	Process
4392	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3956	xjebihhv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3956 set thread context of 4392	3956	xjebihhv.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4940	sc.exe
2024	sc.exe
3608	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
4784	3292	WerFault.exe	82
2344	3956	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xjebihhv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3292 wrote to memory of 1444	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	83
PID 3292 wrote to memory of 1444	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	83
PID 3292 wrote to memory of 1444	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	83
PID 3292 wrote to memory of 3540	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	85
PID 3292 wrote to memory of 3540	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	85
PID 3292 wrote to memory of 3540	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	85
PID 3292 wrote to memory of 4940	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	87
PID 3292 wrote to memory of 4940	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	87
PID 3292 wrote to memory of 4940	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	87
PID 3292 wrote to memory of 2024	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	90
PID 3292 wrote to memory of 2024	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	90
PID 3292 wrote to memory of 2024	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	90
PID 3292 wrote to memory of 3608	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	92
PID 3292 wrote to memory of 3608	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	92
PID 3292 wrote to memory of 3608	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	92
PID 3292 wrote to memory of 1260	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	95
PID 3292 wrote to memory of 1260	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	95
PID 3292 wrote to memory of 1260	3292	JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe	95
PID 3956 wrote to memory of 4392	3956	xjebihhv.exe	101
PID 3956 wrote to memory of 4392	3956	xjebihhv.exe	101
PID 3956 wrote to memory of 4392	3956	xjebihhv.exe	101
PID 3956 wrote to memory of 4392	3956	xjebihhv.exe	101
PID 3956 wrote to memory of 4392	3956	xjebihhv.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3292
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xvbovbe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1444
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xjebihhv.exe" C:\Windows\SysWOW64\xvbovbe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3540
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xvbovbe binPath= "C:\Windows\SysWOW64\xvbovbe\xjebihhv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4940
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xvbovbe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2024
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xvbovbe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3608
- 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:1260
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3292 -s 796
  2⤵
  - Program crash
  PID:4784

C:\Windows\SysWOW64\xvbovbe\xjebihhv.exe
C:\Windows\SysWOW64\xvbovbe\xjebihhv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b5118669e5f5489e011925958a00c4c9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3956
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4392
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3956 -s 524
  2⤵
  - Program crash
  PID:2344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3292 -ip 3292
1⤵
PID:4764

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3956 -ip 3956
1⤵
PID:3640

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\xjebihhv.exe

Filesize
10.6MB

MD5
c9c0afffd93b24e38b2e4e8ab24321fd

SHA1
ff522a3de2513ef91cbf92b43edcc3d0c0593719

SHA256
35ef3997d9f4b7a5325c6116a0545db1c18f8d1e1f441842babda3ba62d95d1d

SHA512
868a34fa58b1b8023ce7a60c38261739f55297f308fc966b3e9dbec9ce0378af85295f37ab9fc8f366b099ebe4846d2bbed9d53180bee0979d16c9723f6331d3

Download Submit
memory/3292-9-0x00000000008F0000-0x0000000000903000-memory.dmp

Filesize
76KB

Download
memory/3292-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3292-2-0x00000000008F0000-0x0000000000903000-memory.dmp

Filesize
76KB

Download
memory/3292-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3292-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3292-1-0x0000000000A50000-0x0000000000B50000-memory.dmp

Filesize
1024KB

Download
memory/3956-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3956-16-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3956-15-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4392-12-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download
memory/4392-14-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download
memory/4392-17-0x00000000012C0000-0x00000000012D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads