tofsee | 024b1ff3808f448395efcc16feb5905a841149f9765a3a247a8437949108fa51

General

Target

JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe
Size

12.0MB
MD5

1f81a2c3835fcdd7652325ea0eb70326
SHA1

a0297513774b23399b9e1747b68db90bba1a097b
SHA256

024b1ff3808f448395efcc16feb5905a841149f9765a3a247a8437949108fa51
SHA512

ccc3b7dbd4a8cbf01c3a4c1ceee8ded3b6882ce8d98c0059b51fac3249ed860b7ea21d229fcb9f61dcc658322ef393f2ac6c7cc4554fb904da73f573d9db295b
SSDEEP

49152:y/m3UeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeK:y

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
1888	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\esesjbj\ImagePath = "C:\\Windows\\SysWOW64\\esesjbj\\tmameyan.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_1f81a2c3835fcdd7652325ea0eb70326.exe

Deletes itself 1 IoCs

pid	Process
4524	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
244	tmameyan.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 244 set thread context of 4524	244	tmameyan.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2904	sc.exe
2364	sc.exe
400	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
4948	2896	WerFault.exe	82
2064	244	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tmameyan.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 4884	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	83
PID 2896 wrote to memory of 4884	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	83
PID 2896 wrote to memory of 4884	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	83
PID 2896 wrote to memory of 1484	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	85
PID 2896 wrote to memory of 1484	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	85
PID 2896 wrote to memory of 1484	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	85
PID 2896 wrote to memory of 400	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	87
PID 2896 wrote to memory of 400	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	87
PID 2896 wrote to memory of 400	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	87
PID 2896 wrote to memory of 2904	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	89
PID 2896 wrote to memory of 2904	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	89
PID 2896 wrote to memory of 2904	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	89
PID 2896 wrote to memory of 2364	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	91
PID 2896 wrote to memory of 2364	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	91
PID 2896 wrote to memory of 2364	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	91
PID 2896 wrote to memory of 1888	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	94
PID 2896 wrote to memory of 1888	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	94
PID 2896 wrote to memory of 1888	2896	JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe	94
PID 244 wrote to memory of 4524	244	tmameyan.exe	100
PID 244 wrote to memory of 4524	244	tmameyan.exe	100
PID 244 wrote to memory of 4524	244	tmameyan.exe	100
PID 244 wrote to memory of 4524	244	tmameyan.exe	100
PID 244 wrote to memory of 4524	244	tmameyan.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\esesjbj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4884
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tmameyan.exe" C:\Windows\SysWOW64\esesjbj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1484
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create esesjbj binPath= "C:\Windows\SysWOW64\esesjbj\tmameyan.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description esesjbj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2904
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start esesjbj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2364
- 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:1888
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2896 -s 1040
  2⤵
  - Program crash
  PID:4948

C:\Windows\SysWOW64\esesjbj\tmameyan.exe
C:\Windows\SysWOW64\esesjbj\tmameyan.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1f81a2c3835fcdd7652325ea0eb70326.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:244
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 244 -s 516
  2⤵
  - Program crash
  PID:2064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2896 -ip 2896
1⤵
PID:4164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 244 -ip 244
1⤵
PID:3408

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\tmameyan.exe

Filesize
12.7MB

MD5
c62c53724fde214133a0c7094d735b13

SHA1
0c3673ece0e24389604dd0debf93b2b89f154750

SHA256
7da8fe9e492dac6ee149d0a62c9bccabe9bf3fce0fbc78953e69dfdc0d37c2a8

SHA512
edd92c4ca25e5abffee01050e5f44bb9c8b5d30ba0bb817d472f99754c4b73c8290784a40e0d7fda801df733ca030c10a962792acca1df18cf23ed116e1a60cb

Download Submit
memory/244-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/244-17-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2896-1-0x0000000001920000-0x0000000001A20000-memory.dmp

Filesize
1024KB

Download
memory/2896-2-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/2896-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2896-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2896-9-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/2896-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/4524-11-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/4524-13-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download
memory/4524-15-0x00000000003B0000-0x00000000003C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads