tofsee | de6664189711f6d55dd4337ae37167a3feaef197a2a5149d17da8a0a8335f584

General

Target

JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe
Size

14.2MB
MD5

f5e82122b54d4d41824619e647ac946d
SHA1

2e5246a6a5053243e05fb0ec57c53c5f5af4e139
SHA256

de6664189711f6d55dd4337ae37167a3feaef197a2a5149d17da8a0a8335f584
SHA512

59606a4b3babd11a4b927f0a0e470cdb42d2b784be7f75c8a3f9f23376972aa1b98c47ff2cf7c5c30216298e59ab9fcf9681f259bb39fa931fa9c87cf0cade30
SSDEEP

98304:3RoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooY:

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
1192	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\ocewalnh\ImagePath = "C:\\Windows\\SysWOW64\\ocewalnh\\jcqcuoqd.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe

Deletes itself 1 IoCs

pid	Process
316	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2360	jcqcuoqd.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2360 set thread context of 316	2360	jcqcuoqd.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
1616	sc.exe
3684	sc.exe
5068	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4000	2384	WerFault.exe	82
3260	2360	WerFault.exe	93

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	jcqcuoqd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2384 wrote to memory of 4716	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	83
PID 2384 wrote to memory of 4716	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	83
PID 2384 wrote to memory of 4716	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	83
PID 2384 wrote to memory of 4792	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	85
PID 2384 wrote to memory of 4792	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	85
PID 2384 wrote to memory of 4792	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	85
PID 2384 wrote to memory of 1616	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	87
PID 2384 wrote to memory of 1616	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	87
PID 2384 wrote to memory of 1616	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	87
PID 2384 wrote to memory of 3684	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	89
PID 2384 wrote to memory of 3684	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	89
PID 2384 wrote to memory of 3684	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	89
PID 2384 wrote to memory of 5068	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	91
PID 2384 wrote to memory of 5068	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	91
PID 2384 wrote to memory of 5068	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	91
PID 2384 wrote to memory of 1192	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	94
PID 2384 wrote to memory of 1192	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	94
PID 2384 wrote to memory of 1192	2384	JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe	94
PID 2360 wrote to memory of 316	2360	jcqcuoqd.exe	100
PID 2360 wrote to memory of 316	2360	jcqcuoqd.exe	100
PID 2360 wrote to memory of 316	2360	jcqcuoqd.exe	100
PID 2360 wrote to memory of 316	2360	jcqcuoqd.exe	100
PID 2360 wrote to memory of 316	2360	jcqcuoqd.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2384
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ocewalnh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4716
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jcqcuoqd.exe" C:\Windows\SysWOW64\ocewalnh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ocewalnh binPath= "C:\Windows\SysWOW64\ocewalnh\jcqcuoqd.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1616
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ocewalnh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ocewalnh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5068
- 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:1192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2384 -s 668
  2⤵
  - Program crash
  PID:4000

C:\Windows\SysWOW64\ocewalnh\jcqcuoqd.exe
C:\Windows\SysWOW64\ocewalnh\jcqcuoqd.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f5e82122b54d4d41824619e647ac946d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:316
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2360 -s 512
  2⤵
  - Program crash
  PID:3260

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2384 -ip 2384
1⤵
PID:652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2360 -ip 2360
1⤵
PID:2620

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\jcqcuoqd.exe

Filesize
13.9MB

MD5
d2371ac5490d3b3c3c767428f2538abf

SHA1
2368a8df20add9e923306b3a378898ae31c881fa

SHA256
c9b2910321304d461ae789830d3322830d28d7cc9a4fbeec3b70d14a64e5da21

SHA512
88d08dea4f5a7a6e29098aee3ec63a748f2700ad97200539329577efaceafe39c10b58144060aa9bb23ec75e43b904723e5f45713bc685a26f9a7c6b8e28d16d

Download Submit
memory/316-14-0x0000000000390000-0x00000000003A5000-memory.dmp

Filesize
84KB

Download
memory/316-16-0x0000000000390000-0x00000000003A5000-memory.dmp

Filesize
84KB

Download
memory/316-17-0x0000000000390000-0x00000000003A5000-memory.dmp

Filesize
84KB

Download
memory/2360-11-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/2360-13-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/2360-12-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/2360-18-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/2384-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2384-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2384-8-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/2384-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2384-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2384-1-0x00000000006E0000-0x00000000007E0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads