tofsee | cd49e88abc766e9e6577b1e7d8b0c4b27df164e7067039ae11ff78c2b0166bb2

General

Target

4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe
Size

10.9MB
MD5

4276d6e574f6400e64b3f2a1dae82741
SHA1

aa8086e024027c58126f30047092b43651c0da35
SHA256

cd49e88abc766e9e6577b1e7d8b0c4b27df164e7067039ae11ff78c2b0166bb2
SHA512

859c90ab3290144e7aef08e9fa126943e28a570da620d46365967c15da158e984a99735352d6c2b099d148cdaa7080066f7c51f160e6884f7eecde25235e540f
SSDEEP

196608:tXPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP3:t

Score

10^/10

tofsee 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
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

Processes:

netsh.exe

pid process

1628 netsh.exe

pid	process
1628	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\kcwxjtzj\ImagePath = "C:\\Windows\\SysWOW64\\kcwxjtzj\\etgcongs.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

Processes:

4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1705699165-553239100-4129523827-1000\Control Panel\International\Geo\Nation	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4888 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

etgcongs.exe

pid process

4116 etgcongs.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

etgcongs.exe

description pid process target process

PID 4116 set thread context of 4888 4116 etgcongs.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

4428 sc.exe
4820 sc.exe
3176 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4888	svchost.exe

pid	process
4116	etgcongs.exe

description	pid	process	target process
PID 4116 set thread context of 4888	4116	etgcongs.exe	svchost.exe

pid	process
4428	sc.exe
4820	sc.exe
3176	sc.exe

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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

1052 3040 WerFault.exe 4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe
3908 4116 WerFault.exe etgcongs.exe

pid	pid_target	process	target process
1052	3040	WerFault.exe	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe
3908	4116	WerFault.exe	etgcongs.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exeetgcongs.exe

description	pid	process	target process
PID 3040 wrote to memory of 5044	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 5044	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 5044	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 2128	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 2128	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 2128	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	cmd.exe
PID 3040 wrote to memory of 4428	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 4428	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 4428	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 4820	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 4820	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 4820	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 3176	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 3176	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 3176	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	sc.exe
PID 3040 wrote to memory of 1628	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	netsh.exe
PID 3040 wrote to memory of 1628	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	netsh.exe
PID 3040 wrote to memory of 1628	3040	4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe	netsh.exe
PID 4116 wrote to memory of 4888	4116	etgcongs.exe	svchost.exe
PID 4116 wrote to memory of 4888	4116	etgcongs.exe	svchost.exe
PID 4116 wrote to memory of 4888	4116	etgcongs.exe	svchost.exe
PID 4116 wrote to memory of 4888	4116	etgcongs.exe	svchost.exe
PID 4116 wrote to memory of 4888	4116	etgcongs.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3040

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kcwxjtzj\
2⤵
PID:5044

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\etgcongs.exe" C:\Windows\SysWOW64\kcwxjtzj\
2⤵
PID:2128

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kcwxjtzj binPath= "C:\Windows\SysWOW64\kcwxjtzj\etgcongs.exe /d\"C:\Users\Admin\AppData\Local\Temp\4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4428

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kcwxjtzj "wifi internet conection"
2⤵
- Launches sc.exe
PID:4820

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kcwxjtzj
2⤵
- Launches sc.exe
PID:3176

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
PID:1628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3040 -s 1044
2⤵
- Program crash
PID:1052

C:\Windows\SysWOW64\kcwxjtzj\etgcongs.exe
C:\Windows\SysWOW64\kcwxjtzj\etgcongs.exe /d"C:\Users\Admin\AppData\Local\Temp\4276d6e574f6400e64b3f2a1dae82741_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4116

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4888

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4116 -s 512
2⤵
- Program crash
PID:3908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3040 -ip 3040
1⤵
PID:3900

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4116 -ip 4116
1⤵
PID:3768

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\etgcongs.exe
Filesize
12.5MB

MD5
a6c87338971513cd0f57c5e4fa8671a9

SHA1
8661846249a7aad6eed84cffeaaa123ea1ec5481

SHA256
df4c41e62ed7204245c1a3a8075be6c6da0e8b4952fa675f210700d1976171ac

SHA512
bf4f4ae9a5759387d5aa40f550bff7a9d141ce23323627cb4fce8be7586d796787fb98fecdd4280b5758556ec149a13bcf68962a8ba67dac1577843d29292029

Download Submit
memory/3040-1-0x0000000000980000-0x0000000000A80000-memory.dmp

Filesize
1024KB

Download
memory/3040-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3040-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3040-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3040-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3040-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/4116-15-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/4116-14-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/4888-11-0x00000000010E0000-0x00000000010F5000-memory.dmp

Filesize
84KB

Download
memory/4888-13-0x00000000010E0000-0x00000000010F5000-memory.dmp

Filesize
84KB

Download
memory/4888-16-0x00000000010E0000-0x00000000010F5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads