tofsee | 4862a24b71b2b82a87363c6e8f76784c96fca5a5285611387c8c012928206445

General

Target

fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe
Size

12.5MB
MD5

fe1a54e652e0aabbeef12672ab7cd8b6
SHA1

ade9b1b9a4cffb7273e0d4658c46e4b96da074cb
SHA256

4862a24b71b2b82a87363c6e8f76784c96fca5a5285611387c8c012928206445
SHA512

fc5f7260a03670a45105b77e4eab17cd784f43fc689e8c7314848f08cabbefcd833cef6e42736585dcd8af54d0642db4249e70ffd6b7b6153dcbe09bf97f41e0
SSDEEP

49152:oM+SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSz:o

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

3940 netsh.exe

pid	process
3940	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\yywechrq\ImagePath = "C:\\Windows\\SysWOW64\\yywechrq\\uwpahpdt.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:

fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3716 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

uwpahpdt.exe

pid process

1788 uwpahpdt.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

uwpahpdt.exe

description pid process target process

PID 1788 set thread context of 3716 1788 uwpahpdt.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

1916 sc.exe
3900 sc.exe
3628 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

1532 4832 WerFault.exe fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe
388 1788 WerFault.exe uwpahpdt.exe

pid	process
3716	svchost.exe

pid	process
1788	uwpahpdt.exe

description	pid	process	target process
PID 1788 set thread context of 3716	1788	uwpahpdt.exe	svchost.exe

pid	process
1916	sc.exe
3900	sc.exe
3628	sc.exe

pid	pid_target	process	target process
1532	4832	WerFault.exe	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe
388	1788	WerFault.exe	uwpahpdt.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exeuwpahpdt.exe

description	pid	process	target process
PID 4832 wrote to memory of 2116	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	cmd.exe
PID 4832 wrote to memory of 2116	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	cmd.exe
PID 4832 wrote to memory of 2116	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	cmd.exe
PID 4832 wrote to memory of 3764	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	cmd.exe
PID 4832 wrote to memory of 3764	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	cmd.exe
PID 4832 wrote to memory of 3764	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	cmd.exe
PID 4832 wrote to memory of 1916	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	sc.exe
PID 4832 wrote to memory of 1916	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	sc.exe
PID 4832 wrote to memory of 1916	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	sc.exe
PID 4832 wrote to memory of 3900	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	sc.exe
PID 4832 wrote to memory of 3900	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	sc.exe
PID 4832 wrote to memory of 3900	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	sc.exe
PID 4832 wrote to memory of 3628	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	sc.exe
PID 4832 wrote to memory of 3628	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	sc.exe
PID 4832 wrote to memory of 3628	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	sc.exe
PID 4832 wrote to memory of 3940	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	netsh.exe
PID 4832 wrote to memory of 3940	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	netsh.exe
PID 4832 wrote to memory of 3940	4832	fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe	netsh.exe
PID 1788 wrote to memory of 3716	1788	uwpahpdt.exe	svchost.exe
PID 1788 wrote to memory of 3716	1788	uwpahpdt.exe	svchost.exe
PID 1788 wrote to memory of 3716	1788	uwpahpdt.exe	svchost.exe
PID 1788 wrote to memory of 3716	1788	uwpahpdt.exe	svchost.exe
PID 1788 wrote to memory of 3716	1788	uwpahpdt.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4832

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yywechrq\
2⤵
PID:2116

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uwpahpdt.exe" C:\Windows\SysWOW64\yywechrq\
2⤵
PID:3764

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create yywechrq binPath= "C:\Windows\SysWOW64\yywechrq\uwpahpdt.exe /d\"C:\Users\Admin\AppData\Local\Temp\fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1916

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description yywechrq "wifi internet conection"
2⤵
- Launches sc.exe
PID:3900

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start yywechrq
2⤵
- Launches sc.exe
PID:3628

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:3940

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4832 -s 660
2⤵
- Program crash
PID:1532

C:\Windows\SysWOW64\yywechrq\uwpahpdt.exe
C:\Windows\SysWOW64\yywechrq\uwpahpdt.exe /d"C:\Users\Admin\AppData\Local\Temp\fe1a54e652e0aabbeef12672ab7cd8b6_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1788

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:3716

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1788 -s 516
2⤵
- Program crash
PID:388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4832 -ip 4832
1⤵
PID:4652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1788 -ip 1788
1⤵
PID:4380

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\uwpahpdt.exe

Filesize
13.8MB

MD5
5156ccd77d6921205e489b9018209fa8

SHA1
b171914d4595312a6b64fef6ac08dce083b49299

SHA256
316640ba274b1c36f785126ebc413bee57ce67978e7d8af2bf42fa8326ef126d

SHA512
f3bb11c7aaabad5b6702bd5357693b1c8649f884760b414c65ab6601ffaa44a4bbbce2dce3336c787dce4ba05b2f24f5a28dfbb6e7fe16fea906ae8f2a074f22

Download Submit
memory/1788-10-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/1788-11-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/1788-17-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/3716-12-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/3716-16-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/3716-18-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/3716-19-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/4832-3-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4832-2-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download
memory/4832-7-0x0000000000400000-0x0000000000466000-memory.dmp

Filesize
408KB

Download
memory/4832-8-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download
memory/4832-1-0x0000000000630000-0x0000000000730000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads