tofsee | abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a

General

Target

JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe
Size

337KB
MD5

d6776b98162419c267c5c4f8bf95ef8b
SHA1

cad3f3d2153d960148239f9ce9bebbb1d364a391
SHA256

abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a
SHA512

1ed3405323520fc4a83339e7df35fa708c26a9bd9c8684864ce95317755d61ad7420b01c94802b4bdda42addb0bfafcaa5fa1738cb735ba934c4e330ccd43789
SSDEEP

6144:SCfwTAbCJYL0eE0BWN3RnzWwXy0bnQjEL81Nrv:SCfoAV0eDBq3RnzWwXyhZX

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
3100	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\rchifffn\ImagePath = "C:\\Windows\\SysWOW64\\rchifffn\\ydndrw.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe

Deletes itself 1 IoCs

pid	Process
4692	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4496	ydndrw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4496 set thread context of 4692	4496	ydndrw.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1412	sc.exe
4328	sc.exe
3256	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3784	5112	WerFault.exe	81
1148	4496	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ydndrw.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 5112 wrote to memory of 3216	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	83
PID 5112 wrote to memory of 3216	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	83
PID 5112 wrote to memory of 3216	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	83
PID 5112 wrote to memory of 3432	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	85
PID 5112 wrote to memory of 3432	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	85
PID 5112 wrote to memory of 3432	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	85
PID 5112 wrote to memory of 1412	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	87
PID 5112 wrote to memory of 1412	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	87
PID 5112 wrote to memory of 1412	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	87
PID 5112 wrote to memory of 4328	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	90
PID 5112 wrote to memory of 4328	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	90
PID 5112 wrote to memory of 4328	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	90
PID 5112 wrote to memory of 3256	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	92
PID 5112 wrote to memory of 3256	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	92
PID 5112 wrote to memory of 3256	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	92
PID 5112 wrote to memory of 3100	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	95
PID 5112 wrote to memory of 3100	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	95
PID 5112 wrote to memory of 3100	5112	JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe	95
PID 4496 wrote to memory of 4692	4496	ydndrw.exe	101
PID 4496 wrote to memory of 4692	4496	ydndrw.exe	101
PID 4496 wrote to memory of 4692	4496	ydndrw.exe	101
PID 4496 wrote to memory of 4692	4496	ydndrw.exe	101
PID 4496 wrote to memory of 4692	4496	ydndrw.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rchifffn\
  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\ydndrw.exe" C:\Windows\SysWOW64\rchifffn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3432
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rchifffn binPath= "C:\Windows\SysWOW64\rchifffn\ydndrw.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1412
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rchifffn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4328
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rchifffn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3256
- 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:3100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5112 -s 1048
  2⤵
  - Program crash
  PID:3784

C:\Windows\SysWOW64\rchifffn\ydndrw.exe
C:\Windows\SysWOW64\rchifffn\ydndrw.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_abf95487064c4fb6b6c0e05e99a9dd70eccc3bb16d83942f43327c077d02090a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4496
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4692
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4496 -s 516
  2⤵
  - Program crash
  PID:1148

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5112 -ip 5112
1⤵
PID:2484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4496 -ip 4496
1⤵
PID:2800

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\ydndrw.exe

Filesize
11.3MB

MD5
8a8a9ee71596a527781730533e896592

SHA1
7196b5ffb2c4bbf7b9e51768402eb9d148ed53f6

SHA256
2e3b572e054d7e71bfb56d4e0406c60032bce5dcf4a8c05c4ba80a590942cb04

SHA512
3f8fa2289ae8d9d2551856c71537437e6cbd7bcc6905114700757c727be354b945ced219053e3403923815afe382a588bedb871adc2cc1d9df448190739220ca

Download Submit
memory/4496-15-0x0000000000400000-0x00000000008F8000-memory.dmp

Filesize
5.0MB

Download
memory/4692-11-0x0000000000870000-0x0000000000885000-memory.dmp

Filesize
84KB

Download
memory/4692-13-0x0000000000870000-0x0000000000885000-memory.dmp

Filesize
84KB

Download
memory/4692-14-0x0000000000870000-0x0000000000885000-memory.dmp

Filesize
84KB

Download
memory/5112-1-0x0000000000C70000-0x0000000000D70000-memory.dmp

Filesize
1024KB

Download
memory/5112-2-0x0000000000A50000-0x0000000000A63000-memory.dmp

Filesize
76KB

Download
memory/5112-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5112-7-0x0000000000400000-0x00000000008F8000-memory.dmp

Filesize
5.0MB

Download
memory/5112-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/5112-8-0x0000000000A50000-0x0000000000A63000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads