tofsee | e9aae4db1a7f9f0d0b66bab9b74f416fb3fc378acc1eadf328df1887662b3fc3

General

Target

52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe
Size

12.7MB
MD5

52fc71ee762212ee681435ac2cfcea35
SHA1

2ce2840c6f1a8f9816005dfe3c0cd64758710896
SHA256

e9aae4db1a7f9f0d0b66bab9b74f416fb3fc378acc1eadf328df1887662b3fc3
SHA512

ddc8eaa83b079d09c81cb769bf6eedcd92d799f986b303a67e0a966a4656ea64ae9dc78ad0b3b4fb65369a38524cb66b3b2b42a711e9347bc38014c10314a67e
SSDEEP

6144:B5VCb4QuzFJpIozzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzD:X8NKFJp

Score

10^/10

tofsee evasion execution persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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\rraksefi = "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

2432 netsh.exe

pid	process
2432	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\rraksefi\ImagePath = "C:\\Windows\\SysWOW64\\rraksefi\\bzgcbkiz.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2704 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

bzgcbkiz.exe

pid process

2808 bzgcbkiz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bzgcbkiz.exe

description pid process target process

PID 2808 set thread context of 2704 2808 bzgcbkiz.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

3032 sc.exe
2544 sc.exe
2668 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2704	svchost.exe

pid	process
2808	bzgcbkiz.exe

description	pid	process	target process
PID 2808 set thread context of 2704	2808	bzgcbkiz.exe	svchost.exe

pid	process
3032	sc.exe
2544	sc.exe
2668	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exebzgcbkiz.exe

description	pid	process	target process
PID 2156 wrote to memory of 1944	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	cmd.exe
PID 2156 wrote to memory of 1944	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	cmd.exe
PID 2156 wrote to memory of 1944	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	cmd.exe
PID 2156 wrote to memory of 1944	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	cmd.exe
PID 2156 wrote to memory of 2032	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	cmd.exe
PID 2156 wrote to memory of 2032	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	cmd.exe
PID 2156 wrote to memory of 2032	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	cmd.exe
PID 2156 wrote to memory of 2032	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	cmd.exe
PID 2156 wrote to memory of 3032	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 3032	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 3032	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 3032	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 2544	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 2544	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 2544	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 2544	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 2668	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 2668	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 2668	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2156 wrote to memory of 2668	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	sc.exe
PID 2808 wrote to memory of 2704	2808	bzgcbkiz.exe	svchost.exe
PID 2808 wrote to memory of 2704	2808	bzgcbkiz.exe	svchost.exe
PID 2808 wrote to memory of 2704	2808	bzgcbkiz.exe	svchost.exe
PID 2808 wrote to memory of 2704	2808	bzgcbkiz.exe	svchost.exe
PID 2808 wrote to memory of 2704	2808	bzgcbkiz.exe	svchost.exe
PID 2808 wrote to memory of 2704	2808	bzgcbkiz.exe	svchost.exe
PID 2156 wrote to memory of 2432	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	netsh.exe
PID 2156 wrote to memory of 2432	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	netsh.exe
PID 2156 wrote to memory of 2432	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	netsh.exe
PID 2156 wrote to memory of 2432	2156	52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2156

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rraksefi\
2⤵
PID:1944

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bzgcbkiz.exe" C:\Windows\SysWOW64\rraksefi\
2⤵
PID:2032

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rraksefi binPath= "C:\Windows\SysWOW64\rraksefi\bzgcbkiz.exe /d\"C:\Users\Admin\AppData\Local\Temp\52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3032

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rraksefi "wifi internet conection"
2⤵
- Launches sc.exe
PID:2544

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rraksefi
2⤵
- Launches sc.exe
PID:2668

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:2432

C:\Windows\SysWOW64\rraksefi\bzgcbkiz.exe
C:\Windows\SysWOW64\rraksefi\bzgcbkiz.exe /d"C:\Users\Admin\AppData\Local\Temp\52fc71ee762212ee681435ac2cfcea35_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2808

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2704

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

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

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\bzgcbkiz.exe

Filesize
11.8MB

MD5
db15bcfc40019efeb5c8eafff104072a

SHA1
89277d4258636dcca0fb07add8b4ef6959a11cec

SHA256
eb63c055557a666bdde9e21bada87adc5d0f2f5e5e34a84e38c8f903483fce92

SHA512
cc94411a2b3433127bf03711a622276670f967c27a4b9bc514a34715cf5f4066cabd1196d0e38703ac6e17b130117789e134792705a4aa464de6504f5e6a47e1

Download Submit
memory/2704-6-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2704-5-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2704-3-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2704-8-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2704-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads