tofsee | 9affcef96c7a0311b248db4f6b690c2c7105162c76f9eeb35b7729533dc83b24

General

Target

JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe
Size

14.3MB
MD5

345840fcaaa9e93ed0e17204d330028e
SHA1

5830c492bcc7a3cf2c93a04e34e9aaa1689cc270
SHA256

9affcef96c7a0311b248db4f6b690c2c7105162c76f9eeb35b7729533dc83b24
SHA512

d800b73f7f5f57b3fff7a5489a2d3ea715af79c121b78f0d633ab6b22f220a347812f55e976ec4daa8df7d3be484f37eaf5e58cc5c9d8659ea00bee0c2e819f3
SSDEEP

49152:YzPOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO:Y

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
3592	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\obejyxlj\ImagePath = "C:\\Windows\\SysWOW64\\obejyxlj\\tmameyan.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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe

Deletes itself 1 IoCs

pid	Process
4320	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2040	tmameyan.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2040 set thread context of 4320	2040	tmameyan.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1252	sc.exe
1552	sc.exe
4516	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
740	3348	WerFault.exe	81
4112	2040	WerFault.exe	92

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.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	tmameyan.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3348 wrote to memory of 1820	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	82
PID 3348 wrote to memory of 1820	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	82
PID 3348 wrote to memory of 1820	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	82
PID 3348 wrote to memory of 4364	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	84
PID 3348 wrote to memory of 4364	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	84
PID 3348 wrote to memory of 4364	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	84
PID 3348 wrote to memory of 4516	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	86
PID 3348 wrote to memory of 4516	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	86
PID 3348 wrote to memory of 4516	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	86
PID 3348 wrote to memory of 1252	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	88
PID 3348 wrote to memory of 1252	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	88
PID 3348 wrote to memory of 1252	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	88
PID 3348 wrote to memory of 1552	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	90
PID 3348 wrote to memory of 1552	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	90
PID 3348 wrote to memory of 1552	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	90
PID 3348 wrote to memory of 3592	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	93
PID 3348 wrote to memory of 3592	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	93
PID 3348 wrote to memory of 3592	3348	JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe	93
PID 2040 wrote to memory of 4320	2040	tmameyan.exe	98
PID 2040 wrote to memory of 4320	2040	tmameyan.exe	98
PID 2040 wrote to memory of 4320	2040	tmameyan.exe	98
PID 2040 wrote to memory of 4320	2040	tmameyan.exe	98
PID 2040 wrote to memory of 4320	2040	tmameyan.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3348
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\obejyxlj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1820
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tmameyan.exe" C:\Windows\SysWOW64\obejyxlj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create obejyxlj binPath= "C:\Windows\SysWOW64\obejyxlj\tmameyan.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4516
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description obejyxlj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1252
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start obejyxlj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1552
- 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:3592
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3348 -s 1240
  2⤵
  - Program crash
  PID:740

C:\Windows\SysWOW64\obejyxlj\tmameyan.exe
C:\Windows\SysWOW64\obejyxlj\tmameyan.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_345840fcaaa9e93ed0e17204d330028e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4320
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2040 -s 520
  2⤵
  - Program crash
  PID:4112

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3348 -ip 3348
1⤵
PID:512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2040 -ip 2040
1⤵
PID:1940

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\tmameyan.exe

Filesize
14.9MB

MD5
c3be31a399eb69eddae2b8485cdb4206

SHA1
6419cb10f4f366178a19d8c0ed5bd2026699cfeb

SHA256
76ae1d0f35a416fcc5d6413e49194c722c725e732d41c14049407f5a3a92e5f9

SHA512
ce8b96d83e0e6d1281a0bc0ac50fb98124a65ef2646691026f00cefe88a77835e79447011d46bd34c35316067076bfe82f4bce314ab405837c9849b08f0bc904

Download Submit
memory/2040-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2040-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/3348-1-0x00000000018B0000-0x00000000019B0000-memory.dmp

Filesize
1024KB

Download
memory/3348-2-0x0000000001860000-0x0000000001873000-memory.dmp

Filesize
76KB

Download
memory/3348-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3348-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3348-9-0x0000000001860000-0x0000000001873000-memory.dmp

Filesize
76KB

Download
memory/3348-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/4320-13-0x00000000009A0000-0x00000000009B5000-memory.dmp

Filesize
84KB

Download
memory/4320-11-0x00000000009A0000-0x00000000009B5000-memory.dmp

Filesize
84KB

Download
memory/4320-15-0x00000000009A0000-0x00000000009B5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads