tofsee | e12f4b91c2032aa459faad30f305a81e1aaedab6f2e04e05e91740d714ad9c80

General

Target

JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe
Size

11.2MB
MD5

1ed0709942f40ec6bdb7b1278dbd6e9d
SHA1

a80ab46b8c0b7464ae01d19bfb1816f2f17373ce
SHA256

e12f4b91c2032aa459faad30f305a81e1aaedab6f2e04e05e91740d714ad9c80
SHA512

f97fcfef714cab32ff89840326a57e9e6892bc4643fd94a22321d9f520c546533ecc721a4d65968d19071ad2d98c2babd9214936f8fb38545c3cb7663db7b3a0
SSDEEP

49152:tN5555555555555555555555555555555555555555555555555555555555555/:

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
1696	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\fvegwixe\ImagePath = "C:\\Windows\\SysWOW64\\fvegwixe\\zeoesx.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_1ed0709942f40ec6bdb7b1278dbd6e9d.exe

Deletes itself 1 IoCs

pid	Process
2484	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1384	zeoesx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1384 set thread context of 2484	1384	zeoesx.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3496	sc.exe
3536	sc.exe
1184	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
1780	2100	WerFault.exe	81
3736	1384	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	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.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	netsh.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	zeoesx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2100 wrote to memory of 4180	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	82
PID 2100 wrote to memory of 4180	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	82
PID 2100 wrote to memory of 4180	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	82
PID 2100 wrote to memory of 4056	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	84
PID 2100 wrote to memory of 4056	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	84
PID 2100 wrote to memory of 4056	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	84
PID 2100 wrote to memory of 3496	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	86
PID 2100 wrote to memory of 3496	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	86
PID 2100 wrote to memory of 3496	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	86
PID 2100 wrote to memory of 3536	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	88
PID 2100 wrote to memory of 3536	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	88
PID 2100 wrote to memory of 3536	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	88
PID 2100 wrote to memory of 1184	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	90
PID 2100 wrote to memory of 1184	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	90
PID 2100 wrote to memory of 1184	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	90
PID 2100 wrote to memory of 1696	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	93
PID 2100 wrote to memory of 1696	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	93
PID 2100 wrote to memory of 1696	2100	JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe	93
PID 1384 wrote to memory of 2484	1384	zeoesx.exe	98
PID 1384 wrote to memory of 2484	1384	zeoesx.exe	98
PID 1384 wrote to memory of 2484	1384	zeoesx.exe	98
PID 1384 wrote to memory of 2484	1384	zeoesx.exe	98
PID 1384 wrote to memory of 2484	1384	zeoesx.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2100
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fvegwixe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4180
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zeoesx.exe" C:\Windows\SysWOW64\fvegwixe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fvegwixe binPath= "C:\Windows\SysWOW64\fvegwixe\zeoesx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fvegwixe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fvegwixe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1184
- 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:1696
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2100 -s 1036
  2⤵
  - Program crash
  PID:1780

C:\Windows\SysWOW64\fvegwixe\zeoesx.exe
C:\Windows\SysWOW64\fvegwixe\zeoesx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1ed0709942f40ec6bdb7b1278dbd6e9d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2484
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1384 -s 512
  2⤵
  - Program crash
  PID:3736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2100 -ip 2100
1⤵
PID:2544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1384 -ip 1384
1⤵
PID:2452

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\zeoesx.exe

Filesize
13.6MB

MD5
18357d88cb6b67d5d520fb1040db6bfe

SHA1
949a6267c2512ec8721a1be2a80567cc92e09254

SHA256
f663bb19838637c5fddc581085edd6d6a28a2cbd4a73967c11b2254f0297a082

SHA512
91cd97b44b2c1b02b3d595f50481bedb8ab014e69ca7987d30c0d26fdd1dcc97960a2f6cc42ff6d115d87b6cbcdaf744fc89519abc70165d147741958d5fee1c

Download Submit
memory/1384-15-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/2100-1-0x0000000003010000-0x0000000003110000-memory.dmp

Filesize
1024KB

Download
memory/2100-2-0x00000000049B0000-0x00000000049C3000-memory.dmp

Filesize
76KB

Download
memory/2100-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2100-9-0x00000000049B0000-0x00000000049C3000-memory.dmp

Filesize
76KB

Download
memory/2100-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2100-8-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/2484-11-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/2484-13-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download
memory/2484-14-0x0000000001230000-0x0000000001245000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads