tofsee | e8d7aaf589ec5208f5d7194ba23378e00b3ed3fb7c84ffd50b34df8e0a9c5d56

General

Target

JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe
Size

11.8MB
MD5

c7d54346062a0b114e7e99d4b205d785
SHA1

0f28c955632d206bdfdc825c3c5120815e39ab9a
SHA256

e8d7aaf589ec5208f5d7194ba23378e00b3ed3fb7c84ffd50b34df8e0a9c5d56
SHA512

a0910eebcd7a3c96dcd4a9a079725be04ad6e3b5f9c680053917465ff825e59e5459d9f62bca06f050f626c917032ec41a9d995528f6b3f194cae051e3f49c6b
SSDEEP

12288:UQeoegEG/Rl1M7jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjn:UQeGX1M

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
2404	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\tsfweddh\ImagePath = "C:\\Windows\\SysWOW64\\tsfweddh\\audnadiu.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe

Deletes itself 1 IoCs

pid	Process
852	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3144	audnadiu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3144 set thread context of 852	3144	audnadiu.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2128	sc.exe
2976	sc.exe
384	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4092	3080	WerFault.exe	82
1944	3144	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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	audnadiu.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3080 wrote to memory of 2592	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	83
PID 3080 wrote to memory of 2592	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	83
PID 3080 wrote to memory of 2592	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	83
PID 3080 wrote to memory of 3648	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	85
PID 3080 wrote to memory of 3648	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	85
PID 3080 wrote to memory of 3648	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	85
PID 3080 wrote to memory of 2128	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	87
PID 3080 wrote to memory of 2128	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	87
PID 3080 wrote to memory of 2128	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	87
PID 3080 wrote to memory of 2976	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	90
PID 3080 wrote to memory of 2976	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	90
PID 3080 wrote to memory of 2976	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	90
PID 3080 wrote to memory of 384	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	92
PID 3080 wrote to memory of 384	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	92
PID 3080 wrote to memory of 384	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	92
PID 3080 wrote to memory of 2404	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	95
PID 3080 wrote to memory of 2404	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	95
PID 3080 wrote to memory of 2404	3080	JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe	95
PID 3144 wrote to memory of 852	3144	audnadiu.exe	101
PID 3144 wrote to memory of 852	3144	audnadiu.exe	101
PID 3144 wrote to memory of 852	3144	audnadiu.exe	101
PID 3144 wrote to memory of 852	3144	audnadiu.exe	101
PID 3144 wrote to memory of 852	3144	audnadiu.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tsfweddh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\audnadiu.exe" C:\Windows\SysWOW64\tsfweddh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tsfweddh binPath= "C:\Windows\SysWOW64\tsfweddh\audnadiu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2128
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tsfweddh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tsfweddh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:384
- 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:2404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3080 -s 1316
  2⤵
  - Program crash
  PID:4092

C:\Windows\SysWOW64\tsfweddh\audnadiu.exe
C:\Windows\SysWOW64\tsfweddh\audnadiu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c7d54346062a0b114e7e99d4b205d785.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3144
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3144 -s 520
  2⤵
  - Program crash
  PID:1944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3080 -ip 3080
1⤵
PID:1592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3144 -ip 3144
1⤵
PID:1032

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\audnadiu.exe

Filesize
12.2MB

MD5
0d8fe9a8d4138e5358d2f1508de11fb8

SHA1
ed1ff2bd101d251d285128dcae4d49c8a85dfd6a

SHA256
65cceb46ffd7d8d2bcb2aa424d8907d3cdb4d03d083959d90c60c7d2827a80dd

SHA512
45f02c56d54ca302dd15c482d3aaafa5fecb21e56d41f4b8d2f04817cce2df8947f397c72261c039b9e62e4386cbc16a6082d14351b8fa026c16c0704c00a34f

Download Submit
memory/852-10-0x0000000000D80000-0x0000000000D95000-memory.dmp

Filesize
84KB

Download
memory/852-19-0x0000000000D80000-0x0000000000D95000-memory.dmp

Filesize
84KB

Download
memory/852-21-0x0000000000D80000-0x0000000000D95000-memory.dmp

Filesize
84KB

Download
memory/852-13-0x0000000000D80000-0x0000000000D95000-memory.dmp

Filesize
84KB

Download
memory/852-20-0x0000000000D80000-0x0000000000D95000-memory.dmp

Filesize
84KB

Download
memory/3080-2-0x0000000000A10000-0x0000000000A23000-memory.dmp

Filesize
76KB

Download
memory/3080-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3080-1-0x0000000000A70000-0x0000000000B70000-memory.dmp

Filesize
1024KB

Download
memory/3080-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3080-14-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3080-15-0x0000000000A10000-0x0000000000A23000-memory.dmp

Filesize
76KB

Download
memory/3144-9-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3144-18-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/3144-8-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads