tofsee | 683fa1172ed26a953994f43177ceff28ee665a14736e73fc6f91f9fe330545a0

General

Target

f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe
Size

12.9MB
MD5

f4c26a587ceedc4e1f881db4635d2e46
SHA1

222207a71d9e9e3eb534b4fdbd644e848f1c24e0
SHA256

683fa1172ed26a953994f43177ceff28ee665a14736e73fc6f91f9fe330545a0
SHA512

722be7f412946c0b4a29b611afea11f0d5ca8b4d3263904299a2102a7a58dd1cb5a115f56a298820ade78b89c229e372189648db33de1cd2c13a8b09cc2a2463
SSDEEP

196608:vV8YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY/:

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\stajuqdg = "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

2600 netsh.exe

pid	process
2600	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\stajuqdg\ImagePath = "C:\\Windows\\SysWOW64\\stajuqdg\\pvgrjyse.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2444 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

pvgrjyse.exe

pid process

3032 pvgrjyse.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

pvgrjyse.exe

description pid process target process

PID 3032 set thread context of 2444 3032 pvgrjyse.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

2648 sc.exe
2592 sc.exe
2712 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2444	svchost.exe

pid	process
3032	pvgrjyse.exe

description	pid	process	target process
PID 3032 set thread context of 2444	3032	pvgrjyse.exe	svchost.exe

pid	process
2648	sc.exe
2592	sc.exe
2712	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exepvgrjyse.exe

description	pid	process	target process
PID 2524 wrote to memory of 2004	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 2524 wrote to memory of 2004	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 2524 wrote to memory of 2004	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 2524 wrote to memory of 2004	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 2524 wrote to memory of 3020	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 2524 wrote to memory of 3020	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 2524 wrote to memory of 3020	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 2524 wrote to memory of 3020	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	cmd.exe
PID 2524 wrote to memory of 2648	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2648	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2648	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2648	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2592	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2592	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2592	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2592	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2712	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2712	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2712	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2712	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	sc.exe
PID 2524 wrote to memory of 2600	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	netsh.exe
PID 2524 wrote to memory of 2600	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	netsh.exe
PID 2524 wrote to memory of 2600	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	netsh.exe
PID 2524 wrote to memory of 2600	2524	f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe	netsh.exe
PID 3032 wrote to memory of 2444	3032	pvgrjyse.exe	svchost.exe
PID 3032 wrote to memory of 2444	3032	pvgrjyse.exe	svchost.exe
PID 3032 wrote to memory of 2444	3032	pvgrjyse.exe	svchost.exe
PID 3032 wrote to memory of 2444	3032	pvgrjyse.exe	svchost.exe
PID 3032 wrote to memory of 2444	3032	pvgrjyse.exe	svchost.exe
PID 3032 wrote to memory of 2444	3032	pvgrjyse.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2524

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\stajuqdg\
2⤵
PID:2004

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pvgrjyse.exe" C:\Windows\SysWOW64\stajuqdg\
2⤵
PID:3020

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create stajuqdg binPath= "C:\Windows\SysWOW64\stajuqdg\pvgrjyse.exe /d\"C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2648

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description stajuqdg "wifi internet conection"
2⤵
- Launches sc.exe
PID:2592

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start stajuqdg
2⤵
- Launches sc.exe
PID:2712

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:2600

C:\Windows\SysWOW64\stajuqdg\pvgrjyse.exe
C:\Windows\SysWOW64\stajuqdg\pvgrjyse.exe /d"C:\Users\Admin\AppData\Local\Temp\f4c26a587ceedc4e1f881db4635d2e46_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3032

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2444

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\pvgrjyse.exe
Filesize
10.9MB

MD5
c9716a8dd1dc365868438cfc7961c1f8

SHA1
afe80977fd34795c9d4b74b91cc805def4888e34

SHA256
cef7b7ab3512958f26c4b4021765c5c18e5e64b6a0a8373d08139436fe145b17

SHA512
18f76e5fc3d169d073a77d42d0b26dc7724c44b5f7f24306b300b3a1d3f9beed247821cd954c317fb1f7b6a575a230bcbddeb94eb0e43d96fd55a305e107a22a

Download Submit
memory/2444-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2444-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2444-12-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2444-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2444-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2444-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2444-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2524-4-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/2524-1-0x0000000000A80000-0x0000000000B80000-memory.dmp

Filesize
1024KB

Download
memory/2524-7-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download
memory/2524-3-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/3032-14-0x00000000009A0000-0x0000000000AA0000-memory.dmp

Filesize
1024KB

Download
memory/3032-15-0x0000000000400000-0x00000000008EA000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads