tofsee | a432105cad3627783fdfab8246f6a09d7d97c796f899dd23af669d46a174a898

General

Target

fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe
Size

10.5MB
MD5

fcff70f4c751ff498a183843ae379351
SHA1

9178bf92b5b7592633f8a21bd7729b5158e99a44
SHA256

a432105cad3627783fdfab8246f6a09d7d97c796f899dd23af669d46a174a898
SHA512

d3523328c186339249ed273d086b053c6035eb7f7d0deaf67377f8d7e14ff324c6a098360c84be07872a1c8b7ad85029a630f7cb52bfdeeab01e8baa55eebc87
SSDEEP

12288:sc8EvSAInj67ygU57H7zKEVlM++++++++++++++++++++++++++++++++++++++G:s0vSAImHU5

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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

1800 netsh.exe

pid	process
1800	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\dujzauw\ImagePath = "C:\\Windows\\SysWOW64\\dujzauw\\oopxdyam.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:

fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3000 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

oopxdyam.exe

pid process

4484 oopxdyam.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

oopxdyam.exe

description pid process target process

PID 4484 set thread context of 3000 4484 oopxdyam.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

3724 sc.exe
1608 sc.exe
2100 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

4852 2980 WerFault.exe fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe
3616 4484 WerFault.exe oopxdyam.exe

pid	process
3000	svchost.exe

pid	process
4484	oopxdyam.exe

description	pid	process	target process
PID 4484 set thread context of 3000	4484	oopxdyam.exe	svchost.exe

pid	process
3724	sc.exe
1608	sc.exe
2100	sc.exe

pid	pid_target	process	target process
4852	2980	WerFault.exe	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe
3616	4484	WerFault.exe	oopxdyam.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fcff70f4c751ff498a183843ae379351_JaffaCakes118.exeoopxdyam.exe

description	pid	process	target process
PID 2980 wrote to memory of 3500	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	cmd.exe
PID 2980 wrote to memory of 3500	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	cmd.exe
PID 2980 wrote to memory of 3500	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	cmd.exe
PID 2980 wrote to memory of 3168	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	cmd.exe
PID 2980 wrote to memory of 3168	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	cmd.exe
PID 2980 wrote to memory of 3168	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	cmd.exe
PID 2980 wrote to memory of 2100	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	sc.exe
PID 2980 wrote to memory of 2100	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	sc.exe
PID 2980 wrote to memory of 2100	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	sc.exe
PID 2980 wrote to memory of 3724	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	sc.exe
PID 2980 wrote to memory of 3724	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	sc.exe
PID 2980 wrote to memory of 3724	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	sc.exe
PID 2980 wrote to memory of 1608	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	sc.exe
PID 2980 wrote to memory of 1608	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	sc.exe
PID 2980 wrote to memory of 1608	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	sc.exe
PID 2980 wrote to memory of 1800	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	netsh.exe
PID 2980 wrote to memory of 1800	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	netsh.exe
PID 2980 wrote to memory of 1800	2980	fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe	netsh.exe
PID 4484 wrote to memory of 3000	4484	oopxdyam.exe	svchost.exe
PID 4484 wrote to memory of 3000	4484	oopxdyam.exe	svchost.exe
PID 4484 wrote to memory of 3000	4484	oopxdyam.exe	svchost.exe
PID 4484 wrote to memory of 3000	4484	oopxdyam.exe	svchost.exe
PID 4484 wrote to memory of 3000	4484	oopxdyam.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2980

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dujzauw\
2⤵
PID:3500

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oopxdyam.exe" C:\Windows\SysWOW64\dujzauw\
2⤵
PID:3168

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create dujzauw binPath= "C:\Windows\SysWOW64\dujzauw\oopxdyam.exe /d\"C:\Users\Admin\AppData\Local\Temp\fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2100

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description dujzauw "wifi internet conection"
2⤵
- Launches sc.exe
PID:3724

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start dujzauw
2⤵
- Launches sc.exe
PID:1608

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:1800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2980 -s 1196
2⤵
- Program crash
PID:4852

C:\Windows\SysWOW64\dujzauw\oopxdyam.exe
C:\Windows\SysWOW64\dujzauw\oopxdyam.exe /d"C:\Users\Admin\AppData\Local\Temp\fcff70f4c751ff498a183843ae379351_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4484

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:3000

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4484 -s 520
2⤵
- Program crash
PID:3616

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2980 -ip 2980
1⤵
PID:2564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4484 -ip 4484
1⤵
PID:2572

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\oopxdyam.exe

Filesize
13.5MB

MD5
4f7874a0a38e7c304b05d87da7261437

SHA1
987437150b4772acc009a024a5f21f940a980026

SHA256
5ce0c1c8531dee857067e449709ab14693e55c6392f78db33d03cc4a7688b1ab

SHA512
598b6286854cfd55614d9b3ee60aed4ed0b9c350039be7d80b28b60982d69e23eba59050163f78a2da8a48239b54771656511fd5c90de31318ff3dde924f4da6

Download Submit
memory/2980-1-0x0000000000B50000-0x0000000000C50000-memory.dmp

Filesize
1024KB

Download
memory/2980-2-0x00000000024F0000-0x0000000002503000-memory.dmp

Filesize
76KB

Download
memory/2980-4-0x0000000000400000-0x00000000008F0000-memory.dmp

Filesize
4.9MB

Download
memory/2980-7-0x0000000000400000-0x00000000008F0000-memory.dmp

Filesize
4.9MB

Download
memory/2980-8-0x00000000024F0000-0x0000000002503000-memory.dmp

Filesize
76KB

Download
memory/3000-15-0x0000000000D00000-0x0000000000D15000-memory.dmp

Filesize
84KB

Download
memory/3000-10-0x0000000000D00000-0x0000000000D15000-memory.dmp

Filesize
84KB

Download
memory/3000-16-0x0000000000D00000-0x0000000000D15000-memory.dmp

Filesize
84KB

Download
memory/3000-18-0x0000000000D00000-0x0000000000D15000-memory.dmp

Filesize
84KB

Download
memory/4484-13-0x0000000000400000-0x00000000008F0000-memory.dmp

Filesize
4.9MB

Download
memory/4484-11-0x0000000000A40000-0x0000000000B40000-memory.dmp

Filesize
1024KB

Download
memory/4484-17-0x0000000000400000-0x00000000008F0000-memory.dmp

Filesize
4.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads