tofsee | 2672d159494e7cdfa545a996013835ac0795ae33a3cc8926e673d41d7ef60c1a

General

Target

JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe
Size

12.2MB
MD5

ad5762b0012c42b5ec1e4bec9e18cf38
SHA1

c893d010ac8fe223aefb4d7598510870490f0f20
SHA256

2672d159494e7cdfa545a996013835ac0795ae33a3cc8926e673d41d7ef60c1a
SHA512

9622b673fd3d9482cdd1355936fbc2f2260f83167d5812b3f1523e3323fe1300b4eef7e609eda0125545ddf6558753441f3cb5706e454f35464257adf88f5db1
SSDEEP

6144:d9fvApQ0bA3aGmYv+943cj9G+LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLr:d9fvApQ0bjGme84Mj9

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation 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
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
864	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\iqctevow\ImagePath = "C:\\Windows\\SysWOW64\\iqctevow\\rlueruzl.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe

Deletes itself 1 IoCs

pid	Process
2044	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5036	rlueruzl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5036 set thread context of 2044	5036	rlueruzl.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3060	sc.exe
216	sc.exe
4868	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 opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3936	3400	WerFault.exe	82
776	5036	WerFault.exe	94

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	rlueruzl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3400 wrote to memory of 3216	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	83
PID 3400 wrote to memory of 3216	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	83
PID 3400 wrote to memory of 3216	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	83
PID 3400 wrote to memory of 468	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	85
PID 3400 wrote to memory of 468	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	85
PID 3400 wrote to memory of 468	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	85
PID 3400 wrote to memory of 216	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	87
PID 3400 wrote to memory of 216	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	87
PID 3400 wrote to memory of 216	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	87
PID 3400 wrote to memory of 4868	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	90
PID 3400 wrote to memory of 4868	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	90
PID 3400 wrote to memory of 4868	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	90
PID 3400 wrote to memory of 3060	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	92
PID 3400 wrote to memory of 3060	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	92
PID 3400 wrote to memory of 3060	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	92
PID 3400 wrote to memory of 864	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	95
PID 3400 wrote to memory of 864	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	95
PID 3400 wrote to memory of 864	3400	JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe	95
PID 5036 wrote to memory of 2044	5036	rlueruzl.exe	101
PID 5036 wrote to memory of 2044	5036	rlueruzl.exe	101
PID 5036 wrote to memory of 2044	5036	rlueruzl.exe	101
PID 5036 wrote to memory of 2044	5036	rlueruzl.exe	101
PID 5036 wrote to memory of 2044	5036	rlueruzl.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iqctevow\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3216
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rlueruzl.exe" C:\Windows\SysWOW64\iqctevow\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iqctevow binPath= "C:\Windows\SysWOW64\iqctevow\rlueruzl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iqctevow "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iqctevow
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3060
- 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:864
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3400 -s 1148
  2⤵
  - Program crash
  PID:3936

C:\Windows\SysWOW64\iqctevow\rlueruzl.exe
C:\Windows\SysWOW64\iqctevow\rlueruzl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ad5762b0012c42b5ec1e4bec9e18cf38.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5036
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5036 -s 512
  2⤵
  - Program crash
  PID:776

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3400 -ip 3400
1⤵
PID:2736

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 5036 -ip 5036
1⤵
PID:4904

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\rlueruzl.exe

Filesize
12.7MB

MD5
653f87b00db1688b65572a58423344be

SHA1
bc07304661fa0c4b2746990ee93cc63ea6160b03

SHA256
cda628dbcc52b310ee25ef17c159a1705c19bcefdd3834130b516e02c00cc9f3

SHA512
97a0bd0a745b4f4416168b17f96f49629c49de56451078ff0a315df676c53a8d48fe315b3b1ed83be1ccf823d7414a5e5a9389887a1722cc7e3d012114af4fcd

Download Submit
memory/2044-11-0x0000000000630000-0x0000000000645000-memory.dmp

Filesize
84KB

Download
memory/2044-13-0x0000000000630000-0x0000000000645000-memory.dmp

Filesize
84KB

Download
memory/2044-14-0x0000000000630000-0x0000000000645000-memory.dmp

Filesize
84KB

Download
memory/3400-1-0x0000000002CA0000-0x0000000002DA0000-memory.dmp

Filesize
1024KB

Download
memory/3400-2-0x0000000002BF0000-0x0000000002C03000-memory.dmp

Filesize
76KB

Download
memory/3400-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3400-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3400-9-0x0000000002BF0000-0x0000000002C03000-memory.dmp

Filesize
76KB

Download
memory/3400-8-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download
memory/5036-15-0x0000000000400000-0x0000000002B8F000-memory.dmp

Filesize
39.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads