tofsee | b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a

General

Target

JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe
Size

187KB
MD5

be6f567dda80049643af2663e424738a
SHA1

9edb7aadb0c618f47a9a41ea08fc3e84be85969b
SHA256

b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a
SHA512

67ab92315ef0aae0903027c272c5c50418a15cd747de49a599444120ad86366ba4e870098a4d1a1f35f41b9a7897f3d6986ae85e965eb0d3514fc71dd58b740c
SSDEEP

3072:j7GjEiHnGPtAA/7Lc5nXn7I9bfBopMTcDcCgjopZa9uD6Vdyhkp:oEiHnGPTzLcVOBgKVcwVf

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
1396	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\wtiluwnn\ImagePath = "C:\\Windows\\SysWOW64\\wtiluwnn\\vnfmlcnu.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_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe

Deletes itself 1 IoCs

pid	Process
2376	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1688	vnfmlcnu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1688 set thread context of 2376	1688	vnfmlcnu.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
996	sc.exe
728	sc.exe
3688	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
2652	2292	WerFault.exe	82
3188	1688	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vnfmlcnu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.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	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 2292 wrote to memory of 4684	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	83
PID 2292 wrote to memory of 4684	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	83
PID 2292 wrote to memory of 4684	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	83
PID 2292 wrote to memory of 3412	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	85
PID 2292 wrote to memory of 3412	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	85
PID 2292 wrote to memory of 3412	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	85
PID 2292 wrote to memory of 996	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	87
PID 2292 wrote to memory of 996	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	87
PID 2292 wrote to memory of 996	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	87
PID 2292 wrote to memory of 728	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	89
PID 2292 wrote to memory of 728	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	89
PID 2292 wrote to memory of 728	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	89
PID 2292 wrote to memory of 3688	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	91
PID 2292 wrote to memory of 3688	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	91
PID 2292 wrote to memory of 3688	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	91
PID 2292 wrote to memory of 1396	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	94
PID 2292 wrote to memory of 1396	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	94
PID 2292 wrote to memory of 1396	2292	JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe	94
PID 1688 wrote to memory of 2376	1688	vnfmlcnu.exe	100
PID 1688 wrote to memory of 2376	1688	vnfmlcnu.exe	100
PID 1688 wrote to memory of 2376	1688	vnfmlcnu.exe	100
PID 1688 wrote to memory of 2376	1688	vnfmlcnu.exe	100
PID 1688 wrote to memory of 2376	1688	vnfmlcnu.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2292
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wtiluwnn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4684
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\vnfmlcnu.exe" C:\Windows\SysWOW64\wtiluwnn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3412
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wtiluwnn binPath= "C:\Windows\SysWOW64\wtiluwnn\vnfmlcnu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:996
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wtiluwnn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:728
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wtiluwnn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3688
- 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:1396
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2292 -s 1244
  2⤵
  - Program crash
  PID:2652

C:\Windows\SysWOW64\wtiluwnn\vnfmlcnu.exe
C:\Windows\SysWOW64\wtiluwnn\vnfmlcnu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b2d49955cd044928d499e29bb44d312e307c40c0d6915827b7adb5f1a6baf24a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1688 -s 516
  2⤵
  - Program crash
  PID:3188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2292 -ip 2292
1⤵
PID:3432

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 1688 -ip 1688
1⤵
PID:4872

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\vnfmlcnu.exe

Filesize
10.6MB

MD5
a703c960edcd52bc7e6876b82f45b7c2

SHA1
f928f46f004272154a75dd8dcd6730070dd62aab

SHA256
47561608f65c0f6817ff432a78ea49064561e42844eb32f47d1a888ee5f26999

SHA512
8a8c22a0e5db5c5c545b8e8ec93024746728dfc9d8682323a80b1e2ce7ca9767bd30e1fb8ed412ac4055a0e21823cf888f3554fb41f86c0840ac1bf926526b17

Download Submit
memory/1688-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1688-7-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1688-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2292-15-0x0000000002190000-0x00000000021A3000-memory.dmp

Filesize
76KB

Download
memory/2292-1-0x0000000002190000-0x00000000021A3000-memory.dmp

Filesize
76KB

Download
memory/2292-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2292-13-0x0000000002180000-0x000000000218D000-memory.dmp

Filesize
52KB

Download
memory/2292-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2292-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2292-0-0x0000000002180000-0x000000000218D000-memory.dmp

Filesize
52KB

Download
memory/2376-8-0x0000000000210000-0x0000000000225000-memory.dmp

Filesize
84KB

Download
memory/2376-11-0x0000000000210000-0x0000000000225000-memory.dmp

Filesize
84KB

Download
memory/2376-17-0x0000000000210000-0x0000000000225000-memory.dmp

Filesize
84KB

Download
memory/2376-18-0x0000000000210000-0x0000000000225000-memory.dmp

Filesize
84KB

Download
memory/2376-19-0x0000000000210000-0x0000000000225000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads