tofsee | 170929e3e7a128082f166a71988e8d97b11f5079fd7c18a780bfda25af14b0e3

General

Target

fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe
Size

12.1MB
MD5

fe3ad8a487aac9594c5a470dd46ac8e2
SHA1

9c6de17f83b0b4c5e1dda4684a0d912b1dd6271c
SHA256

170929e3e7a128082f166a71988e8d97b11f5079fd7c18a780bfda25af14b0e3
SHA512

e000963da5ef22b9fbf1aa48326fb2d79cd95ae57f8f748a2b3ae6278e72308bbbdbd501a4acc62552e78307c7cb10177339bd703eafca59810dfdeb2001aa9b
SSDEEP

24576:OlxdvCcpOKCtBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB3:OlzOR

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

3528 netsh.exe

pid	process
3528	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\vhymvnpu\ImagePath = "C:\\Windows\\SysWOW64\\vhymvnpu\\gttrqree.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:

fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2648 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

gttrqree.exe

pid process

1580 gttrqree.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

gttrqree.exe

description pid process target process

PID 1580 set thread context of 2648 1580 gttrqree.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

3996 sc.exe
4732 sc.exe
3104 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

2408 4536 WerFault.exe fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe
2248 1580 WerFault.exe gttrqree.exe

pid	process
2648	svchost.exe

pid	process
1580	gttrqree.exe

description	pid	process	target process
PID 1580 set thread context of 2648	1580	gttrqree.exe	svchost.exe

pid	process
3996	sc.exe
4732	sc.exe
3104	sc.exe

pid	pid_target	process	target process
2408	4536	WerFault.exe	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe
2248	1580	WerFault.exe	gttrqree.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exegttrqree.exe

description	pid	process	target process
PID 4536 wrote to memory of 4808	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	cmd.exe
PID 4536 wrote to memory of 4808	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	cmd.exe
PID 4536 wrote to memory of 4808	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	cmd.exe
PID 4536 wrote to memory of 2016	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	cmd.exe
PID 4536 wrote to memory of 2016	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	cmd.exe
PID 4536 wrote to memory of 2016	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	cmd.exe
PID 4536 wrote to memory of 3996	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	sc.exe
PID 4536 wrote to memory of 3996	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	sc.exe
PID 4536 wrote to memory of 3996	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	sc.exe
PID 4536 wrote to memory of 4732	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	sc.exe
PID 4536 wrote to memory of 4732	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	sc.exe
PID 4536 wrote to memory of 4732	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	sc.exe
PID 4536 wrote to memory of 3104	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	sc.exe
PID 4536 wrote to memory of 3104	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	sc.exe
PID 4536 wrote to memory of 3104	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	sc.exe
PID 4536 wrote to memory of 3528	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	netsh.exe
PID 4536 wrote to memory of 3528	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	netsh.exe
PID 4536 wrote to memory of 3528	4536	fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe	netsh.exe
PID 1580 wrote to memory of 2648	1580	gttrqree.exe	svchost.exe
PID 1580 wrote to memory of 2648	1580	gttrqree.exe	svchost.exe
PID 1580 wrote to memory of 2648	1580	gttrqree.exe	svchost.exe
PID 1580 wrote to memory of 2648	1580	gttrqree.exe	svchost.exe
PID 1580 wrote to memory of 2648	1580	gttrqree.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4536

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vhymvnpu\
2⤵
PID:4808

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gttrqree.exe" C:\Windows\SysWOW64\vhymvnpu\
2⤵
PID:2016

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create vhymvnpu binPath= "C:\Windows\SysWOW64\vhymvnpu\gttrqree.exe /d\"C:\Users\Admin\AppData\Local\Temp\fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3996

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description vhymvnpu "wifi internet conection"
2⤵
- Launches sc.exe
PID:4732

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start vhymvnpu
2⤵
- Launches sc.exe
PID:3104

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:3528

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4536 -s 1296
2⤵
- Program crash
PID:2408

C:\Windows\SysWOW64\vhymvnpu\gttrqree.exe
C:\Windows\SysWOW64\vhymvnpu\gttrqree.exe /d"C:\Users\Admin\AppData\Local\Temp\fe3ad8a487aac9594c5a470dd46ac8e2_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1580

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2648

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1580 -s 508
2⤵
- Program crash
PID:2248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4536 -ip 4536
1⤵
PID:2524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1580 -ip 1580
1⤵
PID:1984

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\gttrqree.exe

Filesize
10.4MB

MD5
8961a1242bb82f41b7df18aa5a41054f

SHA1
43453c9ce9969c99cce8f0c63f899a08a23d564d

SHA256
13ccdab9eb737211fa7cfaa9022ff1ddce31fb7a4907b66936b9e156311145ee

SHA512
3864b8ae484abaf3cacd846a9d839a60a660bf073e73523bfe69f565ae40dd98d3f24ba96fa544859851b6be802b7cd938667654e00b417c9b967a550b0aa863

Download Submit
memory/1580-10-0x00000000007E0000-0x00000000008E0000-memory.dmp

Filesize
1024KB

Download
memory/1580-11-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/1580-18-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2648-12-0x0000000000310000-0x0000000000325000-memory.dmp

Filesize
84KB

Download
memory/2648-16-0x0000000000310000-0x0000000000325000-memory.dmp

Filesize
84KB

Download
memory/2648-15-0x0000000000310000-0x0000000000325000-memory.dmp

Filesize
84KB

Download
memory/2648-17-0x0000000000310000-0x0000000000325000-memory.dmp

Filesize
84KB

Download
memory/2648-19-0x0000000000310000-0x0000000000325000-memory.dmp

Filesize
84KB

Download
memory/4536-3-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/4536-2-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/4536-9-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/4536-8-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/4536-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads