tofsee | 8dfa3d272288ee3e4fdfa6f4c04094dd9e9bc955d62a8dbe99b28b09f35244b8

General

Target

JaffaCakes118_7399178568161f5a5da8b869e9736716.exe
Size

10.5MB
MD5

7399178568161f5a5da8b869e9736716
SHA1

08554ea0af56007bb7d46125db489632f83ef166
SHA256

8dfa3d272288ee3e4fdfa6f4c04094dd9e9bc955d62a8dbe99b28b09f35244b8
SHA512

44e4b3b7f7b5a83f0ac02b98b62da54a333f12a9400cdfb0765abb26ed35556b3a7da46ba8da4298170e97263bb58eab6fe45249e4293c069c242bd022f4811c
SSDEEP

12288:jnWdwQB3a1ZAXYlVR7jbMviJvK3SRL/R/R/R/R/R/R/R/R/R/R/R/R/R/R/R/R/1:jnWdFB3a1ZLlsviJv

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
1560	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\rnjcjvsn\ImagePath = "C:\\Windows\\SysWOW64\\rnjcjvsn\\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_7399178568161f5a5da8b869e9736716.exe

Deletes itself 1 IoCs

pid	Process
868	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2728	tmameyan.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2728 set thread context of 868	2728	tmameyan.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3256	sc.exe
1716	sc.exe
3760	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
3460	1312	WerFault.exe	82
3388	2728	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_7399178568161f5a5da8b869e9736716.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	tmameyan.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1312 wrote to memory of 224	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	83
PID 1312 wrote to memory of 224	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	83
PID 1312 wrote to memory of 224	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	83
PID 1312 wrote to memory of 3976	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	85
PID 1312 wrote to memory of 3976	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	85
PID 1312 wrote to memory of 3976	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	85
PID 1312 wrote to memory of 3256	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	87
PID 1312 wrote to memory of 3256	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	87
PID 1312 wrote to memory of 3256	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	87
PID 1312 wrote to memory of 1716	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	89
PID 1312 wrote to memory of 1716	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	89
PID 1312 wrote to memory of 1716	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	89
PID 1312 wrote to memory of 3760	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	91
PID 1312 wrote to memory of 3760	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	91
PID 1312 wrote to memory of 3760	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	91
PID 1312 wrote to memory of 1560	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	94
PID 1312 wrote to memory of 1560	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	94
PID 1312 wrote to memory of 1560	1312	JaffaCakes118_7399178568161f5a5da8b869e9736716.exe	94
PID 2728 wrote to memory of 868	2728	tmameyan.exe	100
PID 2728 wrote to memory of 868	2728	tmameyan.exe	100
PID 2728 wrote to memory of 868	2728	tmameyan.exe	100
PID 2728 wrote to memory of 868	2728	tmameyan.exe	100
PID 2728 wrote to memory of 868	2728	tmameyan.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7399178568161f5a5da8b869e9736716.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7399178568161f5a5da8b869e9736716.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rnjcjvsn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tmameyan.exe" C:\Windows\SysWOW64\rnjcjvsn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rnjcjvsn binPath= "C:\Windows\SysWOW64\rnjcjvsn\tmameyan.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7399178568161f5a5da8b869e9736716.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3256
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rnjcjvsn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1716
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rnjcjvsn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3760
- 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:1560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1312 -s 888
  2⤵
  - Program crash
  PID:3460

C:\Windows\SysWOW64\rnjcjvsn\tmameyan.exe
C:\Windows\SysWOW64\rnjcjvsn\tmameyan.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7399178568161f5a5da8b869e9736716.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2728 -s 512
  2⤵
  - Program crash
  PID:3388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1312 -ip 1312
1⤵
PID:2264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 2728 -ip 2728
1⤵
PID:4968

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
11.0MB

MD5
1dde734efa9b1c6fed05323f342484e0

SHA1
82fd676ecc37365eed8201c01490449ded9b2fbc

SHA256
fe6b2d044bc401a1cfc9f5a08be44e3252bb945897b15ad38a94b86efbc8cebe

SHA512
83b60e6ade98e9bca8dffe5e0e283bf3ff4453ed9bb9050f2d901fd9f660049cdce48595d8b6c47274001d209f0b23dfae4a85fdce91f80433a2d3a4dee38765

Download Submit
memory/868-13-0x0000000000D50000-0x0000000000D65000-memory.dmp

Filesize
84KB

Download
memory/868-15-0x0000000000D50000-0x0000000000D65000-memory.dmp

Filesize
84KB

Download
memory/868-16-0x0000000000D50000-0x0000000000D65000-memory.dmp

Filesize
84KB

Download
memory/1312-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1312-2-0x0000000000930000-0x0000000000943000-memory.dmp

Filesize
76KB

Download
memory/1312-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1312-9-0x0000000000930000-0x0000000000943000-memory.dmp

Filesize
76KB

Download
memory/1312-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1312-1-0x00000000009B0000-0x0000000000AB0000-memory.dmp

Filesize
1024KB

Download
memory/2728-12-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2728-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/2728-18-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads