tofsee | 42ebc1e3ce246575703ca88ab049be62f7a729ac743f5f9e6a45e68d04fec38a

General

Target

fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe
Size

12.2MB
MD5

fe71a5cc8c5564f2e1b9e4e63eb48fc5
SHA1

ae2f00b7bc2fb6cbfae3622b6031c5bb411e0bc5
SHA256

42ebc1e3ce246575703ca88ab049be62f7a729ac743f5f9e6a45e68d04fec38a
SHA512

fda1dcb122f442540741567cd4b4c8b452648742df2701494c88c6a296d878a900b7dc65831f4497fe95acf48567b71d1248e23aabc6bc45aef3614fc075a3c4
SSDEEP

393216:Muuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu:

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

1316 netsh.exe

pid	process
1316	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\bxlyhnao\ImagePath = "C:\\Windows\\SysWOW64\\bxlyhnao\\tfmglrem.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:

fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3876 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tfmglrem.exe

pid process

3664 tfmglrem.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tfmglrem.exe

description pid process target process

PID 3664 set thread context of 3876 3664 tfmglrem.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

3452 sc.exe
1828 sc.exe
4080 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

2940 2212 WerFault.exe fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe
4364 3664 WerFault.exe tfmglrem.exe

pid	process
3876	svchost.exe

pid	process
3664	tfmglrem.exe

description	pid	process	target process
PID 3664 set thread context of 3876	3664	tfmglrem.exe	svchost.exe

pid	process
3452	sc.exe
1828	sc.exe
4080	sc.exe

pid	pid_target	process	target process
2940	2212	WerFault.exe	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe
4364	3664	WerFault.exe	tfmglrem.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exetfmglrem.exe

description	pid	process	target process
PID 2212 wrote to memory of 2468	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	cmd.exe
PID 2212 wrote to memory of 2468	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	cmd.exe
PID 2212 wrote to memory of 2468	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	cmd.exe
PID 2212 wrote to memory of 3516	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	cmd.exe
PID 2212 wrote to memory of 3516	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	cmd.exe
PID 2212 wrote to memory of 3516	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	cmd.exe
PID 2212 wrote to memory of 3452	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	sc.exe
PID 2212 wrote to memory of 3452	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	sc.exe
PID 2212 wrote to memory of 3452	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	sc.exe
PID 2212 wrote to memory of 1828	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	sc.exe
PID 2212 wrote to memory of 1828	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	sc.exe
PID 2212 wrote to memory of 1828	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	sc.exe
PID 2212 wrote to memory of 4080	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	sc.exe
PID 2212 wrote to memory of 4080	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	sc.exe
PID 2212 wrote to memory of 4080	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	sc.exe
PID 2212 wrote to memory of 1316	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	netsh.exe
PID 2212 wrote to memory of 1316	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	netsh.exe
PID 2212 wrote to memory of 1316	2212	fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe	netsh.exe
PID 3664 wrote to memory of 3876	3664	tfmglrem.exe	svchost.exe
PID 3664 wrote to memory of 3876	3664	tfmglrem.exe	svchost.exe
PID 3664 wrote to memory of 3876	3664	tfmglrem.exe	svchost.exe
PID 3664 wrote to memory of 3876	3664	tfmglrem.exe	svchost.exe
PID 3664 wrote to memory of 3876	3664	tfmglrem.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2212

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bxlyhnao\
2⤵
PID:2468

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tfmglrem.exe" C:\Windows\SysWOW64\bxlyhnao\
2⤵
PID:3516

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create bxlyhnao binPath= "C:\Windows\SysWOW64\bxlyhnao\tfmglrem.exe /d\"C:\Users\Admin\AppData\Local\Temp\fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3452

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description bxlyhnao "wifi internet conection"
2⤵
- Launches sc.exe
PID:1828

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start bxlyhnao
2⤵
- Launches sc.exe
PID:4080

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:1316

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2212 -s 664
2⤵
- Program crash
PID:2940

C:\Windows\SysWOW64\bxlyhnao\tfmglrem.exe
C:\Windows\SysWOW64\bxlyhnao\tfmglrem.exe /d"C:\Users\Admin\AppData\Local\Temp\fe71a5cc8c5564f2e1b9e4e63eb48fc5_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3664

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:3876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3664 -s 516
2⤵
- Program crash
PID:4364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2212 -ip 2212
1⤵
PID:4488

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 3664 -ip 3664
1⤵
PID:4108

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\tfmglrem.exe
Filesize
10.2MB

MD5
38f2f48f86b100ac5a375a71214b88c3

SHA1
3799ef5f720f86b827b7bf283146a4336bd296af

SHA256
e9cfb7fa271592a9716eeb65d700e634d31ff59ae326e4149efb14fde5f2873d

SHA512
bded6a825c6befb3067b9f8f58355d0e8943ead2f99b1cc0d689cf92cc9efb736f7c292ec09cd13f7d1aa0ba4f44ab5fc7e61dbd69df3b7a6b21355ce01db31c

Download Submit
memory/2212-1-0x0000000002D90000-0x0000000002E90000-memory.dmp

Filesize
1024KB

Download
memory/2212-2-0x00000000048C0000-0x00000000048D3000-memory.dmp

Filesize
76KB

Download
memory/2212-4-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/2212-8-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/2212-9-0x00000000048C0000-0x00000000048D3000-memory.dmp

Filesize
76KB

Download
memory/3664-10-0x0000000002DD0000-0x0000000002ED0000-memory.dmp

Filesize
1024KB

Download
memory/3664-13-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/3664-18-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/3876-11-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/3876-16-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/3876-17-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/3876-19-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads