tofsee | ca0a6b6fba4b953e89e02937e312d3827725b239597b5fa2d38ee50c4e522f1f

General

Target

JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe
Size

12.0MB
MD5

c15b122b092fb7fd7609b0aa35c50055
SHA1

f7a3a614f928c93255722285522751c2e2683f77
SHA256

ca0a6b6fba4b953e89e02937e312d3827725b239597b5fa2d38ee50c4e522f1f
SHA512

a35833133eb8b957ab4b497aaa8fe184dddde80951891de2ec66b93bc8eed046b30036c452a55fbd7d1a34cc16bffb54da3618df49a666801d7a560d3e2c89de
SSDEEP

6144:0x1e32eIcaedCtrtmVHxzDlnTro77LlZgHzEV8hLH:0PemBSkrt8z5rofxW

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
3612	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\mnetlwye\ImagePath = "C:\\Windows\\SysWOW64\\mnetlwye\\psqlfmwg.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe

Deletes itself 1 IoCs

pid	Process
1048	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1816	psqlfmwg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1816 set thread context of 1048	1816	psqlfmwg.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4944	sc.exe
4452	sc.exe
4312	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
2496	2936	WerFault.exe	81
3724	1816	WerFault.exe	92

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	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	psqlfmwg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2936 wrote to memory of 4680	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	82
PID 2936 wrote to memory of 4680	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	82
PID 2936 wrote to memory of 4680	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	82
PID 2936 wrote to memory of 3604	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	84
PID 2936 wrote to memory of 3604	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	84
PID 2936 wrote to memory of 3604	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	84
PID 2936 wrote to memory of 4452	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	86
PID 2936 wrote to memory of 4452	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	86
PID 2936 wrote to memory of 4452	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	86
PID 2936 wrote to memory of 4312	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	88
PID 2936 wrote to memory of 4312	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	88
PID 2936 wrote to memory of 4312	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	88
PID 2936 wrote to memory of 4944	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	90
PID 2936 wrote to memory of 4944	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	90
PID 2936 wrote to memory of 4944	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	90
PID 2936 wrote to memory of 3612	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	93
PID 2936 wrote to memory of 3612	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	93
PID 2936 wrote to memory of 3612	2936	JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe	93
PID 1816 wrote to memory of 1048	1816	psqlfmwg.exe	98
PID 1816 wrote to memory of 1048	1816	psqlfmwg.exe	98
PID 1816 wrote to memory of 1048	1816	psqlfmwg.exe	98
PID 1816 wrote to memory of 1048	1816	psqlfmwg.exe	98
PID 1816 wrote to memory of 1048	1816	psqlfmwg.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mnetlwye\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4680
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\psqlfmwg.exe" C:\Windows\SysWOW64\mnetlwye\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mnetlwye binPath= "C:\Windows\SysWOW64\mnetlwye\psqlfmwg.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mnetlwye "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mnetlwye
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4944
- 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:3612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2936 -s 1048
  2⤵
  - Program crash
  PID:2496

C:\Windows\SysWOW64\mnetlwye\psqlfmwg.exe
C:\Windows\SysWOW64\mnetlwye\psqlfmwg.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c15b122b092fb7fd7609b0aa35c50055.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1816
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1048
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 564
  2⤵
  - Program crash
  PID:3724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2936 -ip 2936
1⤵
PID:2468

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1816 -ip 1816
1⤵
PID:3044

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\psqlfmwg.exe

Filesize
14.5MB

MD5
423bf231d6d254458628f42b73d488d3

SHA1
119e6456713e2a64178235019ef978deaa0699f7

SHA256
f0b158e2fc6fe213fe1dd763a6974a1dc730582ef4e26ac9dc74b102aab0a159

SHA512
677cafbe082042069d235728d11d95281b9de2bd23fc0ad73b2b3d833d37c870a0540cef901fbc5734ead3f0f76a4214f594ab3ef5c2b1da2d25cef5f594b020

Download Submit
memory/1048-14-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/1048-17-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/1048-16-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/1816-11-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1816-13-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1816-12-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1816-18-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2936-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2936-9-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/2936-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/2936-8-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2936-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2936-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads