tofsee | f6bb05628a5c7b46bde51f556687ee0d06723b97db383e0863677b63d662e42b

General

Target

ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe
Size

12.6MB
MD5

ff33e300d05739184f8b619c6c0b3655
SHA1

5ba18dc0534a01afa24c27dc36ac9ceb01bcfa91
SHA256

f6bb05628a5c7b46bde51f556687ee0d06723b97db383e0863677b63d662e42b
SHA512

1f5da43990f2fdf7d567e7da33677f45304a8211d56bd017f22b84c804bcdb1cd65cddde2d5fc16e774b1c59eeae46d5adf58225521451a86c004a9dbdf63947
SSDEEP

12288:6ZH3jactctctctctctctctctctctctctctctctctctctctctctctctctctctctcS:61T

Score

10^/10

tofsee evasion persistence 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) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

1580 netsh.exe

pid	process
1580	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\ivdrsply\ImagePath = "C:\\Windows\\SysWOW64\\ivdrsply\\xniuoaew.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:

ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1920 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

xniuoaew.exe

pid process

3264 xniuoaew.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

xniuoaew.exe

description pid process target process

PID 3264 set thread context of 1920 3264 xniuoaew.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

4060 sc.exe
2820 sc.exe
1952 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1920	svchost.exe

pid	process
3264	xniuoaew.exe

description	pid	process	target process
PID 3264 set thread context of 1920	3264	xniuoaew.exe	svchost.exe

pid	process
4060	sc.exe
2820	sc.exe
1952	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exexniuoaew.exe

description	pid	process	target process
PID 4716 wrote to memory of 1764	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	cmd.exe
PID 4716 wrote to memory of 1764	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	cmd.exe
PID 4716 wrote to memory of 1764	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	cmd.exe
PID 4716 wrote to memory of 1556	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	cmd.exe
PID 4716 wrote to memory of 1556	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	cmd.exe
PID 4716 wrote to memory of 1556	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	cmd.exe
PID 4716 wrote to memory of 4060	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	sc.exe
PID 4716 wrote to memory of 4060	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	sc.exe
PID 4716 wrote to memory of 4060	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	sc.exe
PID 4716 wrote to memory of 2820	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	sc.exe
PID 4716 wrote to memory of 2820	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	sc.exe
PID 4716 wrote to memory of 2820	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	sc.exe
PID 4716 wrote to memory of 1952	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	sc.exe
PID 4716 wrote to memory of 1952	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	sc.exe
PID 4716 wrote to memory of 1952	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	sc.exe
PID 4716 wrote to memory of 1580	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	netsh.exe
PID 4716 wrote to memory of 1580	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	netsh.exe
PID 4716 wrote to memory of 1580	4716	ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe	netsh.exe
PID 3264 wrote to memory of 1920	3264	xniuoaew.exe	svchost.exe
PID 3264 wrote to memory of 1920	3264	xniuoaew.exe	svchost.exe
PID 3264 wrote to memory of 1920	3264	xniuoaew.exe	svchost.exe
PID 3264 wrote to memory of 1920	3264	xniuoaew.exe	svchost.exe
PID 3264 wrote to memory of 1920	3264	xniuoaew.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ivdrsply\
  2⤵
  PID:1764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xniuoaew.exe" C:\Windows\SysWOW64\ivdrsply\
  2⤵
  PID:1556
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ivdrsply binPath= "C:\Windows\SysWOW64\ivdrsply\xniuoaew.exe /d\"C:\Users\Admin\AppData\Local\Temp\ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ivdrsply "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2820
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ivdrsply
  2⤵
  - Launches sc.exe
  PID:1952
- 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
  PID:1580

C:\Windows\SysWOW64\ivdrsply\xniuoaew.exe
C:\Windows\SysWOW64\ivdrsply\xniuoaew.exe /d"C:\Users\Admin\AppData\Local\Temp\ff33e300d05739184f8b619c6c0b3655_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3264
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1920

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

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

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Downloads

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

Filesize
12.7MB

MD5
8187eabdb13da66a8f7a127d7cea0aa0

SHA1
d22c62eefa5aa35260f1b0b5c7d16b3d06b49303

SHA256
e2cd282888273956a973eceb426652b5236f73745c387b8162dc7e4019bd715f

SHA512
608facf89d0fbf80134d6681a8945aec97c576c15f2c4054e72f461117faabcb82b6331073f76c52b4afab44eadf988a5aa6f63bdf5fd716c967db02e60b37de

Download Submit
memory/1920-11-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download
memory/1920-14-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download
memory/1920-17-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download
memory/1920-18-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download
memory/1920-19-0x0000000001250000-0x0000000001265000-memory.dmp

Filesize
84KB

Download
memory/3264-10-0x0000000002D30000-0x0000000002E30000-memory.dmp

Filesize
1024KB

Download
memory/3264-16-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/4716-4-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/4716-2-0x00000000048C0000-0x00000000048D3000-memory.dmp

Filesize
76KB

Download
memory/4716-8-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/4716-9-0x00000000048C0000-0x00000000048D3000-memory.dmp

Filesize
76KB

Download
memory/4716-1-0x0000000002CC0000-0x0000000002DC0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads