tofsee | fcb55991155828d579dcde0f155c8c295a1f1afcf5d497145535ac3dd13d40b8

General

Target

c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe
Size

12.8MB
MD5

c296f02e4d3f5773f967172f8b0b352f
SHA1

a5ac3f8756b8ff7bf2a83eb0f452e86af572e776
SHA256

fcb55991155828d579dcde0f155c8c295a1f1afcf5d497145535ac3dd13d40b8
SHA512

15ab64be39838dfdda5d805ca998064a42189ab453c5152c5a1b49154042ee2fc93c05096d43d19cc684292e396c42878d0fd6de3c17a321d7ea3686addf7618
SSDEEP

49152:KFUk///////////////////////////////////////////////////////////v:KF

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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
1620	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\gjinsdst\ImagePath = "C:\\Windows\\SysWOW64\\gjinsdst\\wrvndoqo.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4652	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
5040	wrvndoqo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5040 set thread context of 4652	5040	wrvndoqo.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
2444	sc.exe
1084	sc.exe
3716	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
1124	2608	WerFault.exe	83
1756	5040	WerFault.exe	95

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	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wrvndoqo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2608 wrote to memory of 3428	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	84
PID 2608 wrote to memory of 3428	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	84
PID 2608 wrote to memory of 3428	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	84
PID 2608 wrote to memory of 2824	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	86
PID 2608 wrote to memory of 2824	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	86
PID 2608 wrote to memory of 2824	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	86
PID 2608 wrote to memory of 2444	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	89
PID 2608 wrote to memory of 2444	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	89
PID 2608 wrote to memory of 2444	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	89
PID 2608 wrote to memory of 1084	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	91
PID 2608 wrote to memory of 1084	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	91
PID 2608 wrote to memory of 1084	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	91
PID 2608 wrote to memory of 3716	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	93
PID 2608 wrote to memory of 3716	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	93
PID 2608 wrote to memory of 3716	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	93
PID 2608 wrote to memory of 1620	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	96
PID 2608 wrote to memory of 1620	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	96
PID 2608 wrote to memory of 1620	2608	c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe	96
PID 5040 wrote to memory of 4652	5040	wrvndoqo.exe	107
PID 5040 wrote to memory of 4652	5040	wrvndoqo.exe	107
PID 5040 wrote to memory of 4652	5040	wrvndoqo.exe	107
PID 5040 wrote to memory of 4652	5040	wrvndoqo.exe	107
PID 5040 wrote to memory of 4652	5040	wrvndoqo.exe	107

C:\Users\Admin\AppData\Local\Temp\c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gjinsdst\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3428
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wrvndoqo.exe" C:\Windows\SysWOW64\gjinsdst\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gjinsdst binPath= "C:\Windows\SysWOW64\gjinsdst\wrvndoqo.exe /d\"C:\Users\Admin\AppData\Local\Temp\c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gjinsdst "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1084
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gjinsdst
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3716
- 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:1620
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2608 -s 792
  2⤵
  - Program crash
  PID:1124

C:\Windows\SysWOW64\gjinsdst\wrvndoqo.exe
C:\Windows\SysWOW64\gjinsdst\wrvndoqo.exe /d"C:\Users\Admin\AppData\Local\Temp\c296f02e4d3f5773f967172f8b0b352f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5040
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4652
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5040 -s 520
  2⤵
  - Program crash
  PID:1756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2608 -ip 2608
1⤵
PID:4552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 5040 -ip 5040
1⤵
PID:3712

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\wrvndoqo.exe

Filesize
14.0MB

MD5
2830eee40deed15b7c84612fe4641994

SHA1
711808acf7a3cb94e15cb787bcbfa94611268867

SHA256
98447744d538d3efa3048deb36def13f443fc182e3a0e64a2e664b9afaaa64b4

SHA512
233144fd8b516019a555cf3bca442657810d465337be284a45f2dcf5eecec6dd7516f9e005c5a1de3d33b64366f5b826f1cab1df4896f1dd6b521971a2fce372

Download Submit
memory/2608-7-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/2608-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2608-2-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/2608-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2608-8-0x00000000021B0000-0x00000000021C3000-memory.dmp

Filesize
76KB

Download
memory/2608-1-0x00000000005D0000-0x00000000006D0000-memory.dmp

Filesize
1024KB

Download
memory/4652-14-0x0000000000F30000-0x0000000000F45000-memory.dmp

Filesize
84KB

Download
memory/4652-16-0x0000000000F30000-0x0000000000F45000-memory.dmp

Filesize
84KB

Download
memory/4652-17-0x0000000000F30000-0x0000000000F45000-memory.dmp

Filesize
84KB

Download
memory/5040-11-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/5040-13-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/5040-12-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download
memory/5040-19-0x0000000000400000-0x0000000000461000-memory.dmp

Filesize
388KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads