tofsee | afba2105b4e169404b3a9cf3bc73e10d943884b176bfeaa1fc54c985daa0bcd2

General

Target

fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe
Size

14.2MB
MD5

fd10a12bfa4567277ceeeee89218d272
SHA1

1e4c7b5cd7fcd6c5f8d620951316c3dc60e55b19
SHA256

afba2105b4e169404b3a9cf3bc73e10d943884b176bfeaa1fc54c985daa0bcd2
SHA512

90e5592cbcb97e6301317679f8a0acec08f6409e400331528f5698d799c214112ca98ce3b37e7990d00e5a7d6d6c213aceb7d78a67a7c171ccb1f6728fba7411
SSDEEP

24576:YerU5sWbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbL:YsW

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

2032 netsh.exe

pid	process
2032	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\bajqqdxu\ImagePath = "C:\\Windows\\SysWOW64\\bajqqdxu\\fapzejbz.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:

fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

fapzejbz.exe

pid process

3956 fapzejbz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

fapzejbz.exe

description pid process target process

PID 3956 set thread context of 4324 3956 fapzejbz.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

956 sc.exe
3012 sc.exe
116 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3956	fapzejbz.exe

description	pid	process	target process
PID 3956 set thread context of 4324	3956	fapzejbz.exe	svchost.exe

pid	process
956	sc.exe
3012	sc.exe
116	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exefapzejbz.exe

description	pid	process	target process
PID 968 wrote to memory of 3680	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	cmd.exe
PID 968 wrote to memory of 3680	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	cmd.exe
PID 968 wrote to memory of 3680	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	cmd.exe
PID 968 wrote to memory of 3880	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	cmd.exe
PID 968 wrote to memory of 3880	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	cmd.exe
PID 968 wrote to memory of 3880	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	cmd.exe
PID 968 wrote to memory of 956	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	sc.exe
PID 968 wrote to memory of 956	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	sc.exe
PID 968 wrote to memory of 956	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	sc.exe
PID 968 wrote to memory of 3012	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	sc.exe
PID 968 wrote to memory of 3012	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	sc.exe
PID 968 wrote to memory of 3012	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	sc.exe
PID 968 wrote to memory of 116	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	sc.exe
PID 968 wrote to memory of 116	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	sc.exe
PID 968 wrote to memory of 116	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	sc.exe
PID 968 wrote to memory of 2032	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	netsh.exe
PID 968 wrote to memory of 2032	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	netsh.exe
PID 968 wrote to memory of 2032	968	fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe	netsh.exe
PID 3956 wrote to memory of 4324	3956	fapzejbz.exe	svchost.exe
PID 3956 wrote to memory of 4324	3956	fapzejbz.exe	svchost.exe
PID 3956 wrote to memory of 4324	3956	fapzejbz.exe	svchost.exe
PID 3956 wrote to memory of 4324	3956	fapzejbz.exe	svchost.exe
PID 3956 wrote to memory of 4324	3956	fapzejbz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:968

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bajqqdxu\
2⤵
PID:3680

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fapzejbz.exe" C:\Windows\SysWOW64\bajqqdxu\
2⤵
PID:3880

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create bajqqdxu binPath= "C:\Windows\SysWOW64\bajqqdxu\fapzejbz.exe /d\"C:\Users\Admin\AppData\Local\Temp\fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:956

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description bajqqdxu "wifi internet conection"
2⤵
- Launches sc.exe
PID:3012

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start bajqqdxu
2⤵
- Launches sc.exe
PID:116

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:2032

C:\Windows\SysWOW64\bajqqdxu\fapzejbz.exe
C:\Windows\SysWOW64\bajqqdxu\fapzejbz.exe /d"C:\Users\Admin\AppData\Local\Temp\fd10a12bfa4567277ceeeee89218d272_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3956

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:4324

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

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Downloads

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

Filesize
15.0MB

MD5
4f2628986b00bf328d371e38ddfd6a9a

SHA1
d5d74da6c103edf9a228b361281ce4755e475c5c

SHA256
4a38d999c5cbb9ac4108f08b197488cf4e7644a056da098c98eee72849713c97

SHA512
8789359b723df709572106412664242610f57dc3c1948ba5eb3e58ad0974c50508721ff908394d8c941ff85f64e900eb50061316ccd7a3c583b37aba646834ab

Download Submit
memory/968-2-0x0000000000620000-0x0000000000633000-memory.dmp

Filesize
76KB

Download
memory/968-3-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/968-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/968-23-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/968-14-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3956-17-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3956-8-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download
memory/3956-9-0x0000000000400000-0x000000000046D000-memory.dmp

Filesize
436KB

Download
memory/3956-22-0x0000000000D30000-0x0000000000D43000-memory.dmp

Filesize
76KB

Download
memory/4324-10-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4324-16-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4324-15-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4324-13-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4324-25-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads