tofsee | a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050

General

Target

JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe
Size

285KB
MD5

9ef28e78bca5e055f127cc9f27b757ae
SHA1

ba887227e4c8a7330c9d822377476c78524f7e4c
SHA256

a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050
SHA512

ae05655182aca76c16bfb24695e61ca17470f3ab37dc7038a128fdd8db127e1a7973845dc62ed8f1283c63282d2faaab6016a0caa0d075498085fe9ec6a73d20
SSDEEP

6144:LKFbjkk2kvN11uzbgwu6L7ITsqSigaTwVf:gbjRHunnn7s

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
4228	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\nghjluea\ImagePath = "C:\\Windows\\SysWOW64\\nghjluea\\zmvstykx.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_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe

Deletes itself 1 IoCs

pid	Process
616	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2280	zmvstykx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2280 set thread context of 616	2280	zmvstykx.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
1700	sc.exe
5008	sc.exe
3732	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
4968	2708	WerFault.exe	81
1656	2280	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_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.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	zmvstykx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 4908	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	82
PID 2708 wrote to memory of 4908	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	82
PID 2708 wrote to memory of 4908	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	82
PID 2708 wrote to memory of 4016	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	84
PID 2708 wrote to memory of 4016	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	84
PID 2708 wrote to memory of 4016	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	84
PID 2708 wrote to memory of 1700	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	86
PID 2708 wrote to memory of 1700	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	86
PID 2708 wrote to memory of 1700	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	86
PID 2708 wrote to memory of 5008	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	88
PID 2708 wrote to memory of 5008	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	88
PID 2708 wrote to memory of 5008	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	88
PID 2708 wrote to memory of 3732	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	90
PID 2708 wrote to memory of 3732	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	90
PID 2708 wrote to memory of 3732	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	90
PID 2708 wrote to memory of 4228	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	93
PID 2708 wrote to memory of 4228	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	93
PID 2708 wrote to memory of 4228	2708	JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe	93
PID 2280 wrote to memory of 616	2280	zmvstykx.exe	97
PID 2280 wrote to memory of 616	2280	zmvstykx.exe	97
PID 2280 wrote to memory of 616	2280	zmvstykx.exe	97
PID 2280 wrote to memory of 616	2280	zmvstykx.exe	97
PID 2280 wrote to memory of 616	2280	zmvstykx.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nghjluea\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4908
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zmvstykx.exe" C:\Windows\SysWOW64\nghjluea\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nghjluea binPath= "C:\Windows\SysWOW64\nghjluea\zmvstykx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1700
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nghjluea "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nghjluea
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3732
- 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:4228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2708 -s 1044
  2⤵
  - Program crash
  PID:4968

C:\Windows\SysWOW64\nghjluea\zmvstykx.exe
C:\Windows\SysWOW64\nghjluea\zmvstykx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a5dc3e74e99e0d02922f059bdce456099a7a357cd04d97618ee07dd5832f9050.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2280 -s 560
  2⤵
  - Program crash
  PID:1656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2708 -ip 2708
1⤵
PID:1304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 2280 -ip 2280
1⤵
PID:3336

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\zmvstykx.exe

Filesize
11.0MB

MD5
70931bb6314819208b2e9439fbfb3a75

SHA1
c86cb23dc76af3af2be86d05594e21a6cd91bdbd

SHA256
ba031b36e982b9bf9a82632fdc5546b711d874c034135ca17c3289e773543de5

SHA512
2f7c345fc173e3afdb29f6e3fba0193432b81126b0a2e5100d9de627a3ba5d8591621965fbf5c54856f85f007ab9bb2eaf94111d55a4c334c04188e49d23b35e

Download Submit
memory/616-9-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/616-21-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/616-20-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/616-19-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/616-12-0x00000000003D0000-0x00000000003E5000-memory.dmp

Filesize
84KB

Download
memory/2280-6-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2280-8-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2280-7-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2280-18-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2708-14-0x00000000004D0000-0x00000000004DD000-memory.dmp

Filesize
52KB

Download
memory/2708-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2708-15-0x00000000004E0000-0x00000000004F3000-memory.dmp

Filesize
76KB

Download
memory/2708-13-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2708-0-0x00000000004D0000-0x00000000004DD000-memory.dmp

Filesize
52KB

Download
memory/2708-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2708-1-0x00000000004E0000-0x00000000004F3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads