tofsee | 3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460

General

Target

JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe
Size

10.5MB
MD5

026f086162e7d6d864ca4dc744149bc0
SHA1

cc81af6e0d8bd8c89126f509ccb5714cce8a3ef0
SHA256

3ef291e4dc9f5a6e42ae653acae1e014e90bf658c4160f6e8de7f2e4b0538460
SHA512

ff7ba4526233eb5a7e6dfa4673bfe0dc9b354a9960c23822267cab62c1571139e93c3919d8bf38bd1afd58b147ea15a2fdc1ad6b92f2e0fd2e65b14847cdebf4
SSDEEP

49152:DkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
1552	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\khdvesej\ImagePath = "C:\\Windows\\SysWOW64\\khdvesej\\wtejhrol.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe

Deletes itself 1 IoCs

pid	Process
4608	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4276	wtejhrol.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4276 set thread context of 4608	4276	wtejhrol.exe	100

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
1828	sc.exe
4916	sc.exe
4032	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2948	852	WerFault.exe	82
732	4276	WerFault.exe	93

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wtejhrol.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 852 wrote to memory of 3092	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	83
PID 852 wrote to memory of 3092	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	83
PID 852 wrote to memory of 3092	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	83
PID 852 wrote to memory of 4912	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	85
PID 852 wrote to memory of 4912	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	85
PID 852 wrote to memory of 4912	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	85
PID 852 wrote to memory of 1828	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	87
PID 852 wrote to memory of 1828	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	87
PID 852 wrote to memory of 1828	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	87
PID 852 wrote to memory of 4916	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	89
PID 852 wrote to memory of 4916	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	89
PID 852 wrote to memory of 4916	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	89
PID 852 wrote to memory of 4032	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	91
PID 852 wrote to memory of 4032	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	91
PID 852 wrote to memory of 4032	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	91
PID 852 wrote to memory of 1552	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	94
PID 852 wrote to memory of 1552	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	94
PID 852 wrote to memory of 1552	852	JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe	94
PID 4276 wrote to memory of 4608	4276	wtejhrol.exe	100
PID 4276 wrote to memory of 4608	4276	wtejhrol.exe	100
PID 4276 wrote to memory of 4608	4276	wtejhrol.exe	100
PID 4276 wrote to memory of 4608	4276	wtejhrol.exe	100
PID 4276 wrote to memory of 4608	4276	wtejhrol.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:852
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\khdvesej\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3092
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wtejhrol.exe" C:\Windows\SysWOW64\khdvesej\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create khdvesej binPath= "C:\Windows\SysWOW64\khdvesej\wtejhrol.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1828
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description khdvesej "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start khdvesej
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4032
- 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
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:1552
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 852 -s 1236
  2⤵
  - Program crash
  PID:2948

C:\Windows\SysWOW64\khdvesej\wtejhrol.exe
C:\Windows\SysWOW64\khdvesej\wtejhrol.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_026f086162e7d6d864ca4dc744149bc0.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4276
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4276 -s 516
  2⤵
  - Program crash
  PID:732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 852 -ip 852
1⤵
PID:1484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 4276 -ip 4276
1⤵
PID:4532

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\wtejhrol.exe

Filesize
14.4MB

MD5
6f0c2edaaf51487b4b05e8a44d8891f7

SHA1
0d1c1f34ebeed8372cec0b20bce35bc7f2f8f84a

SHA256
3da5293a92c8d0efb32b6d9072a0ae2643f4f98bd2d15fec6e34e58589fdd02a

SHA512
b0da09c02c27166166edb63ca6e1d640b4caeb77d2f9d250d8eea540585bb89b582b0594dbc92de648f318e9cd770908e80763584bc703288edfeaea8694710e

Download Submit
memory/852-2-0x00000000024D0000-0x00000000024E3000-memory.dmp

Filesize
76KB

Download
memory/852-1-0x0000000000930000-0x0000000000A30000-memory.dmp

Filesize
1024KB

Download
memory/852-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/852-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/852-9-0x00000000024D0000-0x00000000024E3000-memory.dmp

Filesize
76KB

Download
memory/852-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4276-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4276-16-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4608-12-0x0000000000890000-0x00000000008A5000-memory.dmp

Filesize
84KB

Download
memory/4608-14-0x0000000000890000-0x00000000008A5000-memory.dmp

Filesize
84KB

Download
memory/4608-15-0x0000000000890000-0x00000000008A5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads