tofsee | eef9674a3b52a43eb0fdfaaa7d431a4c2b7dcf48f4ec3bc0e0f1a5f3c0d65817

General

Target

f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe
Size

10.4MB
MD5

f8d73df41f2762b31b9de96cfa433aa0
SHA1

ae4aa80d63ec0a48f6b834a8cd862e0638afd383
SHA256

eef9674a3b52a43eb0fdfaaa7d431a4c2b7dcf48f4ec3bc0e0f1a5f3c0d65817
SHA512

15a379fdeb3a2900e92553054e9acbf3e68ddbe1e29c6806164e34c8a136c8de0b5f556a15e25ddf9577caec1f7a00b7e06d7d2149c0cc35cc9a5e9419286816
SSDEEP

196608:iE/vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvH:iE

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

1472 netsh.exe

pid	process
1472	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\wwvobruv\ImagePath = "C:\\Windows\\SysWOW64\\wwvobruv\\xniuoaew.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:

f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1468 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

xniuoaew.exe

pid process

1728 xniuoaew.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

xniuoaew.exe

description pid process target process

PID 1728 set thread context of 1468 1728 xniuoaew.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

3684 sc.exe
5024 sc.exe
940 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

3808 3048 WerFault.exe f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe
2996 1728 WerFault.exe xniuoaew.exe

pid	process
1468	svchost.exe

pid	process
1728	xniuoaew.exe

description	pid	process	target process
PID 1728 set thread context of 1468	1728	xniuoaew.exe	svchost.exe

pid	process
3684	sc.exe
5024	sc.exe
940	sc.exe

pid	pid_target	process	target process
3808	3048	WerFault.exe	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe
2996	1728	WerFault.exe	xniuoaew.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exexniuoaew.exe

description	pid	process	target process
PID 3048 wrote to memory of 4928	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	cmd.exe
PID 3048 wrote to memory of 4928	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	cmd.exe
PID 3048 wrote to memory of 4928	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	cmd.exe
PID 3048 wrote to memory of 2776	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	cmd.exe
PID 3048 wrote to memory of 2776	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	cmd.exe
PID 3048 wrote to memory of 2776	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	cmd.exe
PID 3048 wrote to memory of 3684	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	sc.exe
PID 3048 wrote to memory of 3684	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	sc.exe
PID 3048 wrote to memory of 3684	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	sc.exe
PID 3048 wrote to memory of 5024	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	sc.exe
PID 3048 wrote to memory of 5024	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	sc.exe
PID 3048 wrote to memory of 5024	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	sc.exe
PID 3048 wrote to memory of 940	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	sc.exe
PID 3048 wrote to memory of 940	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	sc.exe
PID 3048 wrote to memory of 940	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	sc.exe
PID 3048 wrote to memory of 1472	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	netsh.exe
PID 3048 wrote to memory of 1472	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	netsh.exe
PID 3048 wrote to memory of 1472	3048	f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe	netsh.exe
PID 1728 wrote to memory of 1468	1728	xniuoaew.exe	svchost.exe
PID 1728 wrote to memory of 1468	1728	xniuoaew.exe	svchost.exe
PID 1728 wrote to memory of 1468	1728	xniuoaew.exe	svchost.exe
PID 1728 wrote to memory of 1468	1728	xniuoaew.exe	svchost.exe
PID 1728 wrote to memory of 1468	1728	xniuoaew.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3048

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wwvobruv\
2⤵
PID:4928

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xniuoaew.exe" C:\Windows\SysWOW64\wwvobruv\
2⤵
PID:2776

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create wwvobruv binPath= "C:\Windows\SysWOW64\wwvobruv\xniuoaew.exe /d\"C:\Users\Admin\AppData\Local\Temp\f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3684

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description wwvobruv "wifi internet conection"
2⤵
- Launches sc.exe
PID:5024

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start wwvobruv
2⤵
- Launches sc.exe
PID:940

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:1472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3048 -s 788
2⤵
- Program crash
PID:3808

C:\Windows\SysWOW64\wwvobruv\xniuoaew.exe
C:\Windows\SysWOW64\wwvobruv\xniuoaew.exe /d"C:\Users\Admin\AppData\Local\Temp\f8d73df41f2762b31b9de96cfa433aa0_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1728

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:1468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1728 -s 512
2⤵
- Program crash
PID:2996

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 3048 -ip 3048
1⤵
PID:1968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 1728 -ip 1728
1⤵
PID:4480

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\xniuoaew.exe
Filesize
11.0MB

MD5
1c02777674a4ae4bb923298c42eccefe

SHA1
c8dc143607a476f0493e128ac864a9401e2050ec

SHA256
bfa8c7afd3eb9855fcc14e09947cafeda04d92d50021397f15373d42e1d315c8

SHA512
fa88e7a39d2b60e3fb5c80e47b4097738a93741b9e6ae5dd17c4d0caa8d73eda88275a8fd3e94315276e9899a0caff80b7d3c64bd38e23e7e5eb33348f9de736

Download Submit
memory/1468-15-0x0000000000690000-0x00000000006A5000-memory.dmp

Filesize
84KB

Download
memory/1468-12-0x0000000000690000-0x00000000006A5000-memory.dmp

Filesize
84KB

Download
memory/1468-16-0x0000000000690000-0x00000000006A5000-memory.dmp

Filesize
84KB

Download
memory/1468-17-0x0000000000690000-0x00000000006A5000-memory.dmp

Filesize
84KB

Download
memory/1468-19-0x0000000000690000-0x00000000006A5000-memory.dmp

Filesize
84KB

Download
memory/1728-10-0x00000000009B0000-0x0000000000AB0000-memory.dmp

Filesize
1024KB

Download
memory/1728-11-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/1728-18-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/3048-4-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/3048-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3048-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3048-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/3048-1-0x0000000000AD0000-0x0000000000BD0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads