tofsee | 0debd985cd0fff7744ed3165078a38bcb30b0b064ddb5b006d84f2751e0d50f9

General

Target

f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe
Size

14.3MB
MD5

f3bd0e796e1c1b59bde69cecbde26000
SHA1

a3d3bd7e6d987e6cf93c97d80d86b68d2be90af8
SHA256

0debd985cd0fff7744ed3165078a38bcb30b0b064ddb5b006d84f2751e0d50f9
SHA512

32a1ffa73aad3303d3de5bd8766c73d8367c6e1476218df2bd801c2729e34fdacd730e34d6dc5d734d50137cc0db5e8ad0b171d63a3120d4a1b22dccd5193fb3
SSDEEP

3072:DlIKxNiT/X910MzPvrmJXOWYL1DyHSHbfTYBDsopr7p85KzqyROF5LevXZUmoBZ2:DlIKziTP910Uwq1uH4gBDs8BgRn2x

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

4244 netsh.exe

pid	process
4244	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\dwoflsxz\ImagePath = "C:\\Windows\\SysWOW64\\dwoflsxz\\sfwfxkmg.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:

f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4880 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

sfwfxkmg.exe

pid process

2608 sfwfxkmg.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

sfwfxkmg.exe

description pid process target process

PID 2608 set thread context of 4880 2608 sfwfxkmg.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

864 sc.exe
4652 sc.exe
1352 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

1992 1404 WerFault.exe f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe
4852 2608 WerFault.exe sfwfxkmg.exe

pid	process
4880	svchost.exe

pid	process
2608	sfwfxkmg.exe

description	pid	process	target process
PID 2608 set thread context of 4880	2608	sfwfxkmg.exe	svchost.exe

pid	process
864	sc.exe
4652	sc.exe
1352	sc.exe

pid	pid_target	process	target process
1992	1404	WerFault.exe	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe
4852	2608	WerFault.exe	sfwfxkmg.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exesfwfxkmg.exe

description	pid	process	target process
PID 1404 wrote to memory of 2268	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	cmd.exe
PID 1404 wrote to memory of 2268	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	cmd.exe
PID 1404 wrote to memory of 2268	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	cmd.exe
PID 1404 wrote to memory of 4520	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	cmd.exe
PID 1404 wrote to memory of 4520	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	cmd.exe
PID 1404 wrote to memory of 4520	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	cmd.exe
PID 1404 wrote to memory of 864	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	sc.exe
PID 1404 wrote to memory of 864	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	sc.exe
PID 1404 wrote to memory of 864	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	sc.exe
PID 1404 wrote to memory of 4652	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	sc.exe
PID 1404 wrote to memory of 4652	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	sc.exe
PID 1404 wrote to memory of 4652	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	sc.exe
PID 1404 wrote to memory of 1352	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	sc.exe
PID 1404 wrote to memory of 1352	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	sc.exe
PID 1404 wrote to memory of 1352	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	sc.exe
PID 1404 wrote to memory of 4244	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	netsh.exe
PID 1404 wrote to memory of 4244	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	netsh.exe
PID 1404 wrote to memory of 4244	1404	f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe	netsh.exe
PID 2608 wrote to memory of 4880	2608	sfwfxkmg.exe	svchost.exe
PID 2608 wrote to memory of 4880	2608	sfwfxkmg.exe	svchost.exe
PID 2608 wrote to memory of 4880	2608	sfwfxkmg.exe	svchost.exe
PID 2608 wrote to memory of 4880	2608	sfwfxkmg.exe	svchost.exe
PID 2608 wrote to memory of 4880	2608	sfwfxkmg.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1404

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dwoflsxz\
2⤵
PID:2268

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sfwfxkmg.exe" C:\Windows\SysWOW64\dwoflsxz\
2⤵
PID:4520

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create dwoflsxz binPath= "C:\Windows\SysWOW64\dwoflsxz\sfwfxkmg.exe /d\"C:\Users\Admin\AppData\Local\Temp\f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:864

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description dwoflsxz "wifi internet conection"
2⤵
- Launches sc.exe
PID:4652

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start dwoflsxz
2⤵
- Launches sc.exe
PID:1352

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:4244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1404 -s 1196
2⤵
- Program crash
PID:1992

C:\Windows\SysWOW64\dwoflsxz\sfwfxkmg.exe
C:\Windows\SysWOW64\dwoflsxz\sfwfxkmg.exe /d"C:\Users\Admin\AppData\Local\Temp\f3bd0e796e1c1b59bde69cecbde26000_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2608

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 532
2⤵
- Program crash
PID:4852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1404 -ip 1404
1⤵
PID:4708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2608 -ip 2608
1⤵
PID:1832

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\sfwfxkmg.exe
Filesize
14.2MB

MD5
2483d412416be277cc6987cb86cbdeb6

SHA1
8db43b4bcef87853e10198bbb829a77551ef1bf1

SHA256
e4b4ecd4b494011c54e18fcd407d4ed5d78dbc51e10a51d40319f136dd75520a

SHA512
dbb0bfce7e683594598900db86fe19c37ceaef751fddd3608ca0ae610bfe5f8632d52056f7019a9728b19c3adf1b2f1fd6683bf2e0e0c4517a7c79ff5916ba45

Download Submit
memory/1404-2-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/1404-1-0x0000000000590000-0x0000000000690000-memory.dmp

Filesize
1024KB

Download
memory/1404-3-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1404-8-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/1404-9-0x0000000000520000-0x0000000000533000-memory.dmp

Filesize
76KB

Download
memory/2608-10-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/2608-11-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2608-17-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/4880-12-0x0000000000C00000-0x0000000000C15000-memory.dmp

Filesize
84KB

Download
memory/4880-15-0x0000000000C00000-0x0000000000C15000-memory.dmp

Filesize
84KB

Download
memory/4880-16-0x0000000000C00000-0x0000000000C15000-memory.dmp

Filesize
84KB

Download
memory/4880-18-0x0000000000C00000-0x0000000000C15000-memory.dmp

Filesize
84KB

Download
memory/4880-19-0x0000000000C00000-0x0000000000C15000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads