tofsee | f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a

General

Target

JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe
Size

187KB
MD5

27b7fa84e7765abcb03f3d7b8ac3699b
SHA1

eabf162f38ad7bcaa862e8d11a8ba5560fba6c61
SHA256

f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a
SHA512

d2c3e3315f97e23af2ef2ce92687ec9e96cc0703bdb3cf0834dc2d8ab9ad18e3e15dc994923c2b52e311edc74696089fd85a3b74224a0a17ca4eb77b9fb8cc88
SSDEEP

3072:Z7ojA4DTPiMhkeIlqT0bkbZsjGp23YXoI/mmBHSO/YpZa9uD6Vdyhk9:4A4DTPiMtIQT0I5+YXoI/mGR/YwVf

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
2684	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\boguiobs\ImagePath = "C:\\Windows\\SysWOW64\\boguiobs\\ynstnvyr.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe

Deletes itself 1 IoCs

pid	Process
3560	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3668	ynstnvyr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3668 set thread context of 3560	3668	ynstnvyr.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
464	sc.exe
3896	sc.exe
3636	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
2680	3312	WerFault.exe	81
2096	3668	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.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	ynstnvyr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3312 wrote to memory of 1220	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	82
PID 3312 wrote to memory of 1220	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	82
PID 3312 wrote to memory of 1220	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	82
PID 3312 wrote to memory of 2336	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	84
PID 3312 wrote to memory of 2336	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	84
PID 3312 wrote to memory of 2336	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	84
PID 3312 wrote to memory of 464	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	86
PID 3312 wrote to memory of 464	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	86
PID 3312 wrote to memory of 464	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	86
PID 3312 wrote to memory of 3896	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	88
PID 3312 wrote to memory of 3896	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	88
PID 3312 wrote to memory of 3896	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	88
PID 3312 wrote to memory of 3636	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	90
PID 3312 wrote to memory of 3636	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	90
PID 3312 wrote to memory of 3636	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	90
PID 3312 wrote to memory of 2684	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	93
PID 3312 wrote to memory of 2684	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	93
PID 3312 wrote to memory of 2684	3312	JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe	93
PID 3668 wrote to memory of 3560	3668	ynstnvyr.exe	98
PID 3668 wrote to memory of 3560	3668	ynstnvyr.exe	98
PID 3668 wrote to memory of 3560	3668	ynstnvyr.exe	98
PID 3668 wrote to memory of 3560	3668	ynstnvyr.exe	98
PID 3668 wrote to memory of 3560	3668	ynstnvyr.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3312
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\boguiobs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ynstnvyr.exe" C:\Windows\SysWOW64\boguiobs\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2336
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create boguiobs binPath= "C:\Windows\SysWOW64\boguiobs\ynstnvyr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description boguiobs "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start boguiobs
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3636
- 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:2684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3312 -s 596
  2⤵
  - Program crash
  PID:2680

C:\Windows\SysWOW64\boguiobs\ynstnvyr.exe
C:\Windows\SysWOW64\boguiobs\ynstnvyr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f93d0887b4bea5ce3be804e193b29a151b4c533b86f83eb871ec154b5e461c7a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3668
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3560
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3668 -s 512
  2⤵
  - Program crash
  PID:2096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3312 -ip 3312
1⤵
PID:2008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 3668 -ip 3668
1⤵
PID:2768

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\ynstnvyr.exe

Filesize
10.7MB

MD5
ea20dbfa329719b579b348d5c63e0af6

SHA1
f332145e90e1bf91315e201b691963082c3972fa

SHA256
80b57cc5b23a7496ec7d73a097dbd1bc1b8acd9b7abd7f2abc1d1532d036b574

SHA512
587ffde2a90529267d46af33ab11b39f7e0d77979d61540cfc100f7822f1db46bc755bbf7b4c4103dd8676b68233490c7048109391c80f3631643b05cff33bb4

Download Submit
memory/3312-7-0x00000000005E0000-0x00000000005ED000-memory.dmp

Filesize
52KB

Download
memory/3312-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3312-1-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/3312-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3312-8-0x00000000005F0000-0x0000000000603000-memory.dmp

Filesize
76KB

Download
memory/3312-0-0x00000000005E0000-0x00000000005ED000-memory.dmp

Filesize
52KB

Download
memory/3312-6-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3560-15-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/3560-13-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/3560-16-0x0000000001000000-0x0000000001015000-memory.dmp

Filesize
84KB

Download
memory/3668-11-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3668-12-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3668-10-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3668-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads