tofsee | 6be3100cc2f64e20f89e96bd1b0a487c1fca8afb8c3b92e51d3799517b7684bc

General

Target

JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe
Size

11.1MB
MD5

378a35c7ac31c7acf84ea568f6ef9318
SHA1

8fe14325285e8cc111ad947efe3d1fb4df17d575
SHA256

6be3100cc2f64e20f89e96bd1b0a487c1fca8afb8c3b92e51d3799517b7684bc
SHA512

e6f0671c60d9426140b383a5a7eb3b288b51458697139d169b0b590409b6537417fb99895ca8113eec6731e02d8404a212735619b780e9c518fa65ae49fd252f
SSDEEP

6144:HMdOABJjP3ty21A5M9FW8c3np3XTm9ntiAA:HMEEJD3t3A5M9FfgZXTm9nE/

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
2680	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\aoyecocw\ImagePath = "C:\\Windows\\SysWOW64\\aoyecocw\\mcccriog.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_378a35c7ac31c7acf84ea568f6ef9318.exe

Deletes itself 1 IoCs

pid	Process
2008	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4860	mcccriog.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4860 set thread context of 2008	4860	mcccriog.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3196	sc.exe
4840	sc.exe
852	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
4452	1020	WerFault.exe	81
4012	4860	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_378a35c7ac31c7acf84ea568f6ef9318.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mcccriog.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1020 wrote to memory of 3700	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	82
PID 1020 wrote to memory of 3700	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	82
PID 1020 wrote to memory of 3700	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	82
PID 1020 wrote to memory of 1680	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	84
PID 1020 wrote to memory of 1680	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	84
PID 1020 wrote to memory of 1680	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	84
PID 1020 wrote to memory of 3196	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	86
PID 1020 wrote to memory of 3196	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	86
PID 1020 wrote to memory of 3196	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	86
PID 1020 wrote to memory of 4840	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	88
PID 1020 wrote to memory of 4840	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	88
PID 1020 wrote to memory of 4840	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	88
PID 1020 wrote to memory of 852	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	90
PID 1020 wrote to memory of 852	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	90
PID 1020 wrote to memory of 852	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	90
PID 1020 wrote to memory of 2680	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	93
PID 1020 wrote to memory of 2680	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	93
PID 1020 wrote to memory of 2680	1020	JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe	93
PID 4860 wrote to memory of 2008	4860	mcccriog.exe	98
PID 4860 wrote to memory of 2008	4860	mcccriog.exe	98
PID 4860 wrote to memory of 2008	4860	mcccriog.exe	98
PID 4860 wrote to memory of 2008	4860	mcccriog.exe	98
PID 4860 wrote to memory of 2008	4860	mcccriog.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\aoyecocw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3700
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mcccriog.exe" C:\Windows\SysWOW64\aoyecocw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create aoyecocw binPath= "C:\Windows\SysWOW64\aoyecocw\mcccriog.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3196
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description aoyecocw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start aoyecocw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:852
- 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:2680
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1020 -s 892
  2⤵
  - Program crash
  PID:4452

C:\Windows\SysWOW64\aoyecocw\mcccriog.exe
C:\Windows\SysWOW64\aoyecocw\mcccriog.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_378a35c7ac31c7acf84ea568f6ef9318.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 524
  2⤵
  - Program crash
  PID:4012

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1020 -ip 1020
1⤵
PID:2736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4860 -ip 4860
1⤵
PID:2136

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\mcccriog.exe

Filesize
13.3MB

MD5
2dcbbc70a50e021950503d6e9ce71a6d

SHA1
9e9861eb799b058f798dd75cc628b1bff04e2639

SHA256
4faead8a8bd1a04a216a270388b7de5fd420c36e85541892f7ee6a2a0bbe5070

SHA512
849f545370407e0b53e50dc38f52417e272ba93a23e59e9c5cc3e372998fcc6396ba42bf6f61cf4490e4c40a5d8b2f7292deed263ef07c84bd5e16172b261725

Download Submit
memory/1020-1-0x0000000002D90000-0x0000000002E90000-memory.dmp

Filesize
1024KB

Download
memory/1020-2-0x0000000003120000-0x0000000003133000-memory.dmp

Filesize
76KB

Download
memory/1020-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1020-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1020-9-0x0000000003120000-0x0000000003133000-memory.dmp

Filesize
76KB

Download
memory/1020-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/2008-11-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/2008-13-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/2008-15-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/4860-14-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads