tofsee | 5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89

General

Target

JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe
Size

342KB
MD5

1f65c044a1edce2c33c7030fb1a5d0ad
SHA1

df89acc38275392f832d5c8416c1a502a58a7255
SHA256

5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89
SHA512

5664d781c8da599f731ebfbbeb41907e96260f355f1c1f8a49614d97702cd066ff882aa744784696c930b73903b9eae7cda27002bd584448e8afa12399083d6e
SSDEEP

6144:hWwdr+RRATin3UqjCsspkgF9o81ptDPNKHJDlx4BTj:hRcu2UCCssKgF9o81ptDPNKx4B

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
1908	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\sakzshvk\ImagePath = "C:\\Windows\\SysWOW64\\sakzshvk\\rtncyuqh.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_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe

Deletes itself 1 IoCs

pid	Process
340	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3144	rtncyuqh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3144 set thread context of 340	3144	rtncyuqh.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3684	sc.exe
1460	sc.exe
3192	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
3596	1368	WerFault.exe	81
928	3144	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	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	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.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	rtncyuqh.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 1368 wrote to memory of 4468	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	82
PID 1368 wrote to memory of 4468	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	82
PID 1368 wrote to memory of 4468	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	82
PID 1368 wrote to memory of 2880	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	84
PID 1368 wrote to memory of 2880	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	84
PID 1368 wrote to memory of 2880	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	84
PID 1368 wrote to memory of 3684	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	86
PID 1368 wrote to memory of 3684	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	86
PID 1368 wrote to memory of 3684	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	86
PID 1368 wrote to memory of 1460	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	88
PID 1368 wrote to memory of 1460	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	88
PID 1368 wrote to memory of 1460	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	88
PID 1368 wrote to memory of 3192	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	90
PID 1368 wrote to memory of 3192	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	90
PID 1368 wrote to memory of 3192	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	90
PID 1368 wrote to memory of 1908	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	93
PID 1368 wrote to memory of 1908	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	93
PID 1368 wrote to memory of 1908	1368	JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe	93
PID 3144 wrote to memory of 340	3144	rtncyuqh.exe	98
PID 3144 wrote to memory of 340	3144	rtncyuqh.exe	98
PID 3144 wrote to memory of 340	3144	rtncyuqh.exe	98
PID 3144 wrote to memory of 340	3144	rtncyuqh.exe	98
PID 3144 wrote to memory of 340	3144	rtncyuqh.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sakzshvk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4468
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rtncyuqh.exe" C:\Windows\SysWOW64\sakzshvk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sakzshvk binPath= "C:\Windows\SysWOW64\sakzshvk\rtncyuqh.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sakzshvk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sakzshvk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3192
- 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:1908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1368 -s 1052
  2⤵
  - Program crash
  PID:3596

C:\Windows\SysWOW64\sakzshvk\rtncyuqh.exe
C:\Windows\SysWOW64\sakzshvk\rtncyuqh.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5c6056925d553e9289cc8af65829b87fb4c0827cde81fbb2942243a7355a7e89.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3144
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:340
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3144 -s 564
  2⤵
  - Program crash
  PID:928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1368 -ip 1368
1⤵
PID:3268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3144 -ip 3144
1⤵
PID:3236

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\rtncyuqh.exe

Filesize
12.3MB

MD5
9a18a29b431a91a8367de399db923728

SHA1
fc0cee944db5a3f396ce715cb0c134cf4967624c

SHA256
942ea2488d16d66a5f10ff63c2110d010212fdf655799b93b09403cf48c6690d

SHA512
14a03b9b6521625171ee3de327904ea9d83c6c6cfc520f594e223e072a4382a41caaaf25e23618105e7fc6602fcc8b12ee5ec0ce7d53a9655d92b62069139709

Download Submit
memory/340-11-0x0000000000BE0000-0x0000000000BF5000-memory.dmp

Filesize
84KB

Download
memory/340-13-0x0000000000BE0000-0x0000000000BF5000-memory.dmp

Filesize
84KB

Download
memory/340-14-0x0000000000BE0000-0x0000000000BF5000-memory.dmp

Filesize
84KB

Download
memory/1368-1-0x0000000000BA0000-0x0000000000CA0000-memory.dmp

Filesize
1024KB

Download
memory/1368-2-0x0000000000A90000-0x0000000000AA3000-memory.dmp

Filesize
76KB

Download
memory/1368-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1368-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1368-8-0x0000000000A90000-0x0000000000AA3000-memory.dmp

Filesize
76KB

Download
memory/1368-7-0x0000000000400000-0x00000000008FA000-memory.dmp

Filesize
5.0MB

Download
memory/3144-15-0x0000000000400000-0x00000000008FA000-memory.dmp

Filesize
5.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads