tofsee | 3d75c4f3de4c59779cd84d9b938445948a257b5dbe6d291ce64b98d7e0b5e80d

General

Target

f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe
Size

11.5MB
MD5

f82fcc6b28d0ae7b42e6a6a123913719
SHA1

ca5b8c2a36e2baa53082673f78f65b402182d2bd
SHA256

3d75c4f3de4c59779cd84d9b938445948a257b5dbe6d291ce64b98d7e0b5e80d
SHA512

109cb309682d2761bb7d03a2a52718d83f4cc8d437c33dcda17a055c41e5b798057dc63bf3095c4652d0027e7d08d3fbcbfa6aa366dac308cc8926be08e9b4d7
SSDEEP

49152:i3SkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkE:i3

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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\pjcaoeug = "0"	svchost.exe

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

2820 netsh.exe

pid	process
2820	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\pjcaoeug\ImagePath = "C:\\Windows\\SysWOW64\\pjcaoeug\\bbckqlnz.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2468 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

bbckqlnz.exe

pid process

2472 bbckqlnz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bbckqlnz.exe

description pid process target process

PID 2472 set thread context of 2468 2472 bbckqlnz.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

2588 sc.exe
2552 sc.exe
2560 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2468	svchost.exe

pid	process
2472	bbckqlnz.exe

description	pid	process	target process
PID 2472 set thread context of 2468	2472	bbckqlnz.exe	svchost.exe

pid	process
2588	sc.exe
2552	sc.exe
2560	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exebbckqlnz.exe

description	pid	process	target process
PID 756 wrote to memory of 792	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 756 wrote to memory of 792	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 756 wrote to memory of 792	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 756 wrote to memory of 792	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 756 wrote to memory of 2264	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 756 wrote to memory of 2264	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 756 wrote to memory of 2264	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 756 wrote to memory of 2264	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	cmd.exe
PID 756 wrote to memory of 2588	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2588	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2588	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2588	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2552	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2552	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2552	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2552	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2560	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2560	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2560	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2560	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	sc.exe
PID 756 wrote to memory of 2820	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	netsh.exe
PID 756 wrote to memory of 2820	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	netsh.exe
PID 756 wrote to memory of 2820	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	netsh.exe
PID 756 wrote to memory of 2820	756	f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe	netsh.exe
PID 2472 wrote to memory of 2468	2472	bbckqlnz.exe	svchost.exe
PID 2472 wrote to memory of 2468	2472	bbckqlnz.exe	svchost.exe
PID 2472 wrote to memory of 2468	2472	bbckqlnz.exe	svchost.exe
PID 2472 wrote to memory of 2468	2472	bbckqlnz.exe	svchost.exe
PID 2472 wrote to memory of 2468	2472	bbckqlnz.exe	svchost.exe
PID 2472 wrote to memory of 2468	2472	bbckqlnz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:756
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pjcaoeug\
  2⤵
  PID:792
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bbckqlnz.exe" C:\Windows\SysWOW64\pjcaoeug\
  2⤵
  PID:2264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pjcaoeug binPath= "C:\Windows\SysWOW64\pjcaoeug\bbckqlnz.exe /d\"C:\Users\Admin\AppData\Local\Temp\f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pjcaoeug "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2552
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pjcaoeug
  2⤵
  - Launches sc.exe
  PID:2560
- 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:2820

C:\Windows\SysWOW64\pjcaoeug\bbckqlnz.exe
C:\Windows\SysWOW64\pjcaoeug\bbckqlnz.exe /d"C:\Users\Admin\AppData\Local\Temp\f82fcc6b28d0ae7b42e6a6a123913719_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2472
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2468

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

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\bbckqlnz.exe

Filesize
10.4MB

MD5
f150995159a29c2ed203dea7350b0117

SHA1
1a1382930694330fea33f3adea9a2abc72015ec2

SHA256
64e5b407e69fa8099e0a5ea0389dd1fb305acbb11e2a838deae0bae32dd5c174

SHA512
d48c41faa2a1dfbb108fa67fe9f017fb4946282c63044fdeb764e82f959c687a90caa8d1ae1937724b53d3f5af1efac93fc3920aacf43e0d26415c1dbca2fe82

Download Submit
memory/756-1-0x0000000000230000-0x0000000000330000-memory.dmp

Filesize
1024KB

Download
memory/756-4-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/756-7-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/756-3-0x00000000003B0000-0x00000000003C3000-memory.dmp

Filesize
76KB

Download
memory/2468-19-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2468-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2468-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2468-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2468-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2468-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2468-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2472-10-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/2472-15-0x0000000000400000-0x0000000000C14000-memory.dmp

Filesize
8.1MB

Download
memory/2472-9-0x0000000000250000-0x0000000000350000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads