tofsee | e484c2397a151ed82e2874060f335ffc33c6d442d4358158cfe385f75abc378f

General

Target

JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe
Size

12.5MB
MD5

c6cdc26d4da1406f0901958066c6a85f
SHA1

5bcf2516112953906f9312b2c3cfb34845c00049
SHA256

e484c2397a151ed82e2874060f335ffc33c6d442d4358158cfe385f75abc378f
SHA512

4e9a67c17d2ec2848be598ab0a3bbe65c8a6c40fd25af41fe1dd649612227e0cb05b2e839b5c1e4062b16f757a1bc95f800ee50b382aea4791efe3c855ff7ead
SSDEEP

49152:ZvUWkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkE:Z

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
2056	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\jlxxvqbx\ImagePath = "C:\\Windows\\SysWOW64\\jlxxvqbx\\gmhktccx.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_c6cdc26d4da1406f0901958066c6a85f.exe

Deletes itself 1 IoCs

pid	Process
4188	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1928	gmhktccx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1928 set thread context of 4188	1928	gmhktccx.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
976	sc.exe
2460	sc.exe
4572	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
4492	4000	WerFault.exe	81
4928	1928	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gmhktccx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4000 wrote to memory of 3676	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	82
PID 4000 wrote to memory of 3676	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	82
PID 4000 wrote to memory of 3676	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	82
PID 4000 wrote to memory of 4812	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	84
PID 4000 wrote to memory of 4812	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	84
PID 4000 wrote to memory of 4812	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	84
PID 4000 wrote to memory of 976	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	86
PID 4000 wrote to memory of 976	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	86
PID 4000 wrote to memory of 976	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	86
PID 4000 wrote to memory of 2460	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	88
PID 4000 wrote to memory of 2460	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	88
PID 4000 wrote to memory of 2460	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	88
PID 4000 wrote to memory of 4572	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	90
PID 4000 wrote to memory of 4572	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	90
PID 4000 wrote to memory of 4572	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	90
PID 4000 wrote to memory of 2056	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	93
PID 4000 wrote to memory of 2056	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	93
PID 4000 wrote to memory of 2056	4000	JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe	93
PID 1928 wrote to memory of 4188	1928	gmhktccx.exe	98
PID 1928 wrote to memory of 4188	1928	gmhktccx.exe	98
PID 1928 wrote to memory of 4188	1928	gmhktccx.exe	98
PID 1928 wrote to memory of 4188	1928	gmhktccx.exe	98
PID 1928 wrote to memory of 4188	1928	gmhktccx.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4000
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jlxxvqbx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gmhktccx.exe" C:\Windows\SysWOW64\jlxxvqbx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jlxxvqbx binPath= "C:\Windows\SysWOW64\jlxxvqbx\gmhktccx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jlxxvqbx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2460
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jlxxvqbx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4572
- 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:2056
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4000 -s 1152
  2⤵
  - Program crash
  PID:4492

C:\Windows\SysWOW64\jlxxvqbx\gmhktccx.exe
C:\Windows\SysWOW64\jlxxvqbx\gmhktccx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_c6cdc26d4da1406f0901958066c6a85f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4188
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 512
  2⤵
  - Program crash
  PID:4928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4000 -ip 4000
1⤵
PID:1364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1928 -ip 1928
1⤵
PID:2052

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\gmhktccx.exe

Filesize
14.7MB

MD5
02758be328e6766c1d7437f254465c44

SHA1
d22dc48a9d2125deede0fb0659d73500ed2f63f6

SHA256
7660d7f4d9df51ee4e99100a43495ea22720e327502cfad7fbd9085b885a59ee

SHA512
aebf3cbebdd14ca1c8496ce68091595e193e0435408282bc7495b4fda576e76f93eab1fdc93b9c0c9856b1185dd7e8c4d581a12006f752ee96cd531603264605

Download Submit
memory/1928-15-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/4000-2-0x0000000003040000-0x0000000003053000-memory.dmp

Filesize
76KB

Download
memory/4000-1-0x00000000030A0000-0x00000000031A0000-memory.dmp

Filesize
1024KB

Download
memory/4000-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4000-9-0x0000000003040000-0x0000000003053000-memory.dmp

Filesize
76KB

Download
memory/4000-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4000-8-0x0000000000400000-0x0000000002DA4000-memory.dmp

Filesize
41.6MB

Download
memory/4188-11-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/4188-13-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download
memory/4188-14-0x00000000007D0000-0x00000000007E5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads