tofsee | ce1ad5adf634559d6611de722ccc16690c0b1be6d6e05aa73a807dbacae6b15d

General

Target

fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe
Size

13.1MB
MD5

fcd93bb91fe05aa7a08803ef9bcf651a
SHA1

cf910b3f0e207135296eb5d65e9bf1473581e3db
SHA256

ce1ad5adf634559d6611de722ccc16690c0b1be6d6e05aa73a807dbacae6b15d
SHA512

39cff9d762aef61ffa1486a646ef94132eb6888fc843562e8721c67ec9f720aaa2adc581fad48a95a298b0ba9da3ba61f6e3aed698418595af2b48be39909a3d
SSDEEP

98304:TNWUlllllllllllllllllllllllllllllllllllllllllllllllllllllllllll5:xW

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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

2412 netsh.exe

pid	process
2412	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\yxivqagn\ImagePath = "C:\\Windows\\SysWOW64\\yxivqagn\\soggdsrf.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:

fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

688 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

soggdsrf.exe

pid process

4972 soggdsrf.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

soggdsrf.exe

description pid process target process

PID 4972 set thread context of 688 4972 soggdsrf.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

2800 sc.exe
3824 sc.exe
4348 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
688	svchost.exe

pid	process
4972	soggdsrf.exe

description	pid	process	target process
PID 4972 set thread context of 688	4972	soggdsrf.exe	svchost.exe

pid	process
2800	sc.exe
3824	sc.exe
4348	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exesoggdsrf.exe

description	pid	process	target process
PID 1348 wrote to memory of 5088	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	cmd.exe
PID 1348 wrote to memory of 5088	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	cmd.exe
PID 1348 wrote to memory of 5088	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	cmd.exe
PID 1348 wrote to memory of 4700	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	cmd.exe
PID 1348 wrote to memory of 4700	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	cmd.exe
PID 1348 wrote to memory of 4700	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	cmd.exe
PID 1348 wrote to memory of 3824	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	sc.exe
PID 1348 wrote to memory of 3824	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	sc.exe
PID 1348 wrote to memory of 3824	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	sc.exe
PID 1348 wrote to memory of 4348	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	sc.exe
PID 1348 wrote to memory of 4348	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	sc.exe
PID 1348 wrote to memory of 4348	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	sc.exe
PID 1348 wrote to memory of 2800	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	sc.exe
PID 1348 wrote to memory of 2800	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	sc.exe
PID 1348 wrote to memory of 2800	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	sc.exe
PID 1348 wrote to memory of 2412	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	netsh.exe
PID 1348 wrote to memory of 2412	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	netsh.exe
PID 1348 wrote to memory of 2412	1348	fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe	netsh.exe
PID 4972 wrote to memory of 688	4972	soggdsrf.exe	svchost.exe
PID 4972 wrote to memory of 688	4972	soggdsrf.exe	svchost.exe
PID 4972 wrote to memory of 688	4972	soggdsrf.exe	svchost.exe
PID 4972 wrote to memory of 688	4972	soggdsrf.exe	svchost.exe
PID 4972 wrote to memory of 688	4972	soggdsrf.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1348

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yxivqagn\
2⤵
PID:5088

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\soggdsrf.exe" C:\Windows\SysWOW64\yxivqagn\
2⤵
PID:4700

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create yxivqagn binPath= "C:\Windows\SysWOW64\yxivqagn\soggdsrf.exe /d\"C:\Users\Admin\AppData\Local\Temp\fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3824

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description yxivqagn "wifi internet conection"
2⤵
- Launches sc.exe
PID:4348

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start yxivqagn
2⤵
- Launches sc.exe
PID:2800

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:2412

C:\Windows\SysWOW64\yxivqagn\soggdsrf.exe
C:\Windows\SysWOW64\yxivqagn\soggdsrf.exe /d"C:\Users\Admin\AppData\Local\Temp\fcd93bb91fe05aa7a08803ef9bcf651a_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4972

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:688

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\soggdsrf.exe

Filesize
13.3MB

MD5
0d0f825f1e0f5124cc5543276d6c140d

SHA1
b8529471a54f3527564277a46d7a800fd870b661

SHA256
2657ffa6aa25d3deef2f9d75955d5a16c9930d32e5a0f8da8ed448d7bb9448cd

SHA512
81db9556296ef3142a7674adbad7b1240255d818dcbcb8564dab37d051600266fcd7339a8281e6ae3e8dae7405d92c611b95b1094b177fef53b73b3ae4718f72

Download Submit
memory/688-18-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/688-10-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/688-15-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/688-19-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/688-17-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/1348-2-0x0000000003970000-0x0000000003983000-memory.dmp

Filesize
76KB

Download
memory/1348-4-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/1348-8-0x0000000003970000-0x0000000003983000-memory.dmp

Filesize
76KB

Download
memory/1348-7-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/1348-1-0x0000000003990000-0x0000000003A90000-memory.dmp

Filesize
1024KB

Download
memory/4972-11-0x0000000003830000-0x0000000003930000-memory.dmp

Filesize
1024KB

Download
memory/4972-16-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads