tofsee | cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a

General

Target

JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe
Size

271KB
MD5

94c7198c19c34c0cda20f648f5ddddee
SHA1

55bb7508994c6d934b30426f6de6262c2afcd164
SHA256

cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a
SHA512

eaa8f23d325ad827d9e17274c0381a76665fba56880463b6f7fffbb1c952b7b8b186365a95e64635e5ec231e3a3cf926cb4daaf1a06c62a71c3c3d01bb9220c6
SSDEEP

6144:NlCjpeSS2LqgL6ebgC1zoTjc9JZHLza0UB/4:azS2LqgLdv1y4HLzri

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
4944	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\qynutoa\ImagePath = "C:\\Windows\\SysWOW64\\qynutoa\\kavhbnrj.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_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe

Deletes itself 1 IoCs

pid	Process
1228	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4352	kavhbnrj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4352 set thread context of 1228	4352	kavhbnrj.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4480	sc.exe
4776	sc.exe
1012	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
1820	4344	WerFault.exe	81
216	4352	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kavhbnrj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4344 wrote to memory of 4400	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	82
PID 4344 wrote to memory of 4400	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	82
PID 4344 wrote to memory of 4400	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	82
PID 4344 wrote to memory of 3480	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	84
PID 4344 wrote to memory of 3480	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	84
PID 4344 wrote to memory of 3480	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	84
PID 4344 wrote to memory of 4480	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	86
PID 4344 wrote to memory of 4480	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	86
PID 4344 wrote to memory of 4480	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	86
PID 4344 wrote to memory of 4776	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	88
PID 4344 wrote to memory of 4776	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	88
PID 4344 wrote to memory of 4776	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	88
PID 4344 wrote to memory of 1012	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	90
PID 4344 wrote to memory of 1012	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	90
PID 4344 wrote to memory of 1012	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	90
PID 4344 wrote to memory of 4944	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	93
PID 4344 wrote to memory of 4944	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	93
PID 4344 wrote to memory of 4944	4344	JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe	93
PID 4352 wrote to memory of 1228	4352	kavhbnrj.exe	98
PID 4352 wrote to memory of 1228	4352	kavhbnrj.exe	98
PID 4352 wrote to memory of 1228	4352	kavhbnrj.exe	98
PID 4352 wrote to memory of 1228	4352	kavhbnrj.exe	98
PID 4352 wrote to memory of 1228	4352	kavhbnrj.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4344
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qynutoa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4400
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kavhbnrj.exe" C:\Windows\SysWOW64\qynutoa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qynutoa binPath= "C:\Windows\SysWOW64\qynutoa\kavhbnrj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4480
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qynutoa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4776
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qynutoa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1012
- 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:4944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4344 -s 1044
  2⤵
  - Program crash
  PID:1820

C:\Windows\SysWOW64\qynutoa\kavhbnrj.exe
C:\Windows\SysWOW64\qynutoa\kavhbnrj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cf4f236229e742870789685e59e7427cd16482a2b34c14e3d3b82142a3103d4a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4352
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4352 -s 528
  2⤵
  - Program crash
  PID:216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4344 -ip 4344
1⤵
PID:1524

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4352 -ip 4352
1⤵
PID:1912

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\kavhbnrj.exe

Filesize
13.6MB

MD5
16a6b0b242b7a7c31e0ec9d42837c97b

SHA1
86b01096b9ac2f459797417d0773883112d77dc7

SHA256
2ec55a6534404ccee9f8f3153b03278406e9e2096e2810f154941b7799f359c4

SHA512
890cb7139773219345f827823b602b4f1a3056c0da63f5e8ea2e744d54af93db514194f26b2309155691bd76f980a6269fc598baa1ffb96ee7f675f337d1a71d

Download Submit
memory/1228-13-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/1228-16-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/1228-15-0x0000000000140000-0x0000000000155000-memory.dmp

Filesize
84KB

Download
memory/4344-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4344-9-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/4344-1-0x00000000006D0000-0x00000000007D0000-memory.dmp

Filesize
1024KB

Download
memory/4344-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4344-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4344-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/4352-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4352-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4352-18-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads