tofsee | 39d036a551bda39f12cb19872829595cc49592b2b67f045cc8af0e152dd5bfa1

General

Target

3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe
Size

13.9MB
MD5

3fdb3d1b28ad105c77c7b1506ae9c1fe
SHA1

e98ff352d4fd79d4b9e3f5909f3c82c01e22ec1c
SHA256

39d036a551bda39f12cb19872829595cc49592b2b67f045cc8af0e152dd5bfa1
SHA512

5630fb09f2d34bf3cd1051e52a56290434fc38c01182e822bc957849c0d56cdf41f4d6f2757b4467053adc1470c6e39116b687abbdc2bc069718a93d6540caea
SSDEEP

196608:BLad4qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq3:BL

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\bqrkqgmp = "0"	svchost.exe

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

2756 netsh.exe

pid	process
2756	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\bqrkqgmp\ImagePath = "C:\\Windows\\SysWOW64\\bqrkqgmp\\fdnllbka.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2864 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

fdnllbka.exe

pid process

2844 fdnllbka.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

fdnllbka.exe

description pid process target process

PID 2844 set thread context of 2864 2844 fdnllbka.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

2780 sc.exe
2328 sc.exe
2796 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2864	svchost.exe

pid	process
2844	fdnllbka.exe

description	pid	process	target process
PID 2844 set thread context of 2864	2844	fdnllbka.exe	svchost.exe

pid	process
2780	sc.exe
2328	sc.exe
2796	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

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exefdnllbka.exe

description	pid	process	target process
PID 2140 wrote to memory of 2144	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 2140 wrote to memory of 2144	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 2140 wrote to memory of 2144	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 2140 wrote to memory of 2144	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 2140 wrote to memory of 2520	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 2140 wrote to memory of 2520	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 2140 wrote to memory of 2520	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 2140 wrote to memory of 2520	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	cmd.exe
PID 2140 wrote to memory of 2780	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2780	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2780	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2780	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2328	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2328	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2328	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2328	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2796	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2796	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2796	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2796	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	sc.exe
PID 2140 wrote to memory of 2756	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	netsh.exe
PID 2140 wrote to memory of 2756	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	netsh.exe
PID 2140 wrote to memory of 2756	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	netsh.exe
PID 2140 wrote to memory of 2756	2140	3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe	netsh.exe
PID 2844 wrote to memory of 2864	2844	fdnllbka.exe	svchost.exe
PID 2844 wrote to memory of 2864	2844	fdnllbka.exe	svchost.exe
PID 2844 wrote to memory of 2864	2844	fdnllbka.exe	svchost.exe
PID 2844 wrote to memory of 2864	2844	fdnllbka.exe	svchost.exe
PID 2844 wrote to memory of 2864	2844	fdnllbka.exe	svchost.exe
PID 2844 wrote to memory of 2864	2844	fdnllbka.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2140

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bqrkqgmp\
2⤵
PID:2144

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fdnllbka.exe" C:\Windows\SysWOW64\bqrkqgmp\
2⤵
PID:2520

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create bqrkqgmp binPath= "C:\Windows\SysWOW64\bqrkqgmp\fdnllbka.exe /d\"C:\Users\Admin\AppData\Local\Temp\3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2780

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description bqrkqgmp "wifi internet conection"
2⤵
- Launches sc.exe
PID:2328

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start bqrkqgmp
2⤵
- Launches sc.exe
PID:2796

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:2756

C:\Windows\SysWOW64\bqrkqgmp\fdnllbka.exe
C:\Windows\SysWOW64\bqrkqgmp\fdnllbka.exe /d"C:\Users\Admin\AppData\Local\Temp\3fdb3d1b28ad105c77c7b1506ae9c1fe_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2844

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2864

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\fdnllbka.exe
Filesize
11.2MB

MD5
c04dc2d8857e74437930dc34c8d610ba

SHA1
fecc5c461c35607e31433540fb61d81740046a86

SHA256
829d1331885d2814ed88425b13bb7807f39c8bcddbcca1a4800d91d37bf09d05

SHA512
64c71b836342b1c3fb850602e635ce057b4aca24bd85b5d66f581dcedf37103bd5f370b99ff2eff903c67eb7bc40c4a90455922f5e39ef3cbb8fd1f1c9374569

Download Submit
memory/2140-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2140-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2140-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2140-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2140-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2140-1-0x0000000000CE0000-0x0000000000DE0000-memory.dmp

Filesize
1024KB

Download
memory/2844-17-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2864-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2864-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2864-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2864-16-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2864-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads