tofsee | 1aee6a5bcf5228486fc5cb5e14a547ba8874a409a930a407c366c6794a586d7a

General

Target

b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe
Size

10.1MB
MD5

b5499023bec1ab1093f9a5ebc8b494dc
SHA1

0fdef03dbf650bdb19080042bc0704c92e315a49
SHA256

1aee6a5bcf5228486fc5cb5e14a547ba8874a409a930a407c366c6794a586d7a
SHA512

4d8cf6ff7ee9b1650491671c73a7e0b2732c85265495f8a722421a011b48228d95fc8055e97e2c8c9fac082cd475a955894cfc265aed0d86fd85aa3cc8c1984f
SSDEEP

98304:YYTPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPv:Y

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.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
2944	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\cebqkehb\ImagePath = "C:\\Windows\\SysWOW64\\cebqkehb\\fxfucaec.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	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2080	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1008	fxfucaec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1008 set thread context of 2080	1008	fxfucaec.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
3496	sc.exe
4796	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

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.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	fxfucaec.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4524 wrote to memory of 4508	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	82
PID 4524 wrote to memory of 4508	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	82
PID 4524 wrote to memory of 4508	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	82
PID 4524 wrote to memory of 1188	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	84
PID 4524 wrote to memory of 1188	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	84
PID 4524 wrote to memory of 1188	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	84
PID 4524 wrote to memory of 3496	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	86
PID 4524 wrote to memory of 3496	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	86
PID 4524 wrote to memory of 3496	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	86
PID 4524 wrote to memory of 4796	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	88
PID 4524 wrote to memory of 4796	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	88
PID 4524 wrote to memory of 4796	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	88
PID 4524 wrote to memory of 1184	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	90
PID 4524 wrote to memory of 1184	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	90
PID 4524 wrote to memory of 1184	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	90
PID 4524 wrote to memory of 2944	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	93
PID 4524 wrote to memory of 2944	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	93
PID 4524 wrote to memory of 2944	4524	b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe	93
PID 1008 wrote to memory of 2080	1008	fxfucaec.exe	95
PID 1008 wrote to memory of 2080	1008	fxfucaec.exe	95
PID 1008 wrote to memory of 2080	1008	fxfucaec.exe	95
PID 1008 wrote to memory of 2080	1008	fxfucaec.exe	95
PID 1008 wrote to memory of 2080	1008	fxfucaec.exe	95

C:\Users\Admin\AppData\Local\Temp\b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4524
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cebqkehb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fxfucaec.exe" C:\Windows\SysWOW64\cebqkehb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cebqkehb binPath= "C:\Windows\SysWOW64\cebqkehb\fxfucaec.exe /d\"C:\Users\Admin\AppData\Local\Temp\b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.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 cebqkehb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cebqkehb
  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:2944

C:\Windows\SysWOW64\cebqkehb\fxfucaec.exe
C:\Windows\SysWOW64\cebqkehb\fxfucaec.exe /d"C:\Users\Admin\AppData\Local\Temp\b5499023bec1ab1093f9a5ebc8b494dc_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1008
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2080

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\fxfucaec.exe

Filesize
14.2MB

MD5
7e0b1a985ca4c17c045619a5b2f1a6f4

SHA1
d58ef0276f93f69f7a93985cca77310ffe35e87c

SHA256
b387446c729c9b579fa7ab4b5476ba08c6c374ed6db5b58850606b3ad2e96994

SHA512
c2401fff2e5e62218224cdd87d6da424c4ad81e6e9c196aefd1a530ab95e0c463b63a5f55754dd814de217d6ac989110f6156cc900a93c00cc84d613e1bd46b1

Download Submit
memory/1008-14-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download
memory/2080-11-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download
memory/2080-13-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download
memory/2080-15-0x0000000000F50000-0x0000000000F65000-memory.dmp

Filesize
84KB

Download
memory/4524-2-0x0000000000DC0000-0x0000000000DD3000-memory.dmp

Filesize
76KB

Download
memory/4524-1-0x0000000000E40000-0x0000000000F40000-memory.dmp

Filesize
1024KB

Download
memory/4524-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4524-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4524-8-0x0000000000DC0000-0x0000000000DD3000-memory.dmp

Filesize
76KB

Download
memory/4524-7-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads