tofsee | 6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d

General

Target

JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe
Size

136KB
MD5

a1746af01bdd96219bdfc0a44b5825b1
SHA1

82fdd3deb8414b3fd0c5c01a16d8a84488e21c2d
SHA256

6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d
SHA512

976ab91a304d4cbe65676b545281758414f0e042ee4fffa124100d11683a0acec6630df81286c1c9578f0dda78af6a96bb782f6c1b5fea79444ad99423e7ddd4
SSDEEP

3072:0aDZxXySmDW/dHWHNHm3aDWD57ulk9mY5:0aFxCRuHWZmNs

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
4672	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\oobxwezm\ImagePath = "C:\\Windows\\SysWOW64\\oobxwezm\\amyggrgo.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe

Deletes itself 1 IoCs

pid	Process
2520	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3888	amyggrgo.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3888 set thread context of 2520	3888	amyggrgo.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2188	sc.exe
2308	sc.exe
3892	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.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	amyggrgo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 388	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	82
PID 2276 wrote to memory of 388	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	82
PID 2276 wrote to memory of 388	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	82
PID 2276 wrote to memory of 4280	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	84
PID 2276 wrote to memory of 4280	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	84
PID 2276 wrote to memory of 4280	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	84
PID 2276 wrote to memory of 2188	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	86
PID 2276 wrote to memory of 2188	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	86
PID 2276 wrote to memory of 2188	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	86
PID 2276 wrote to memory of 2308	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	88
PID 2276 wrote to memory of 2308	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	88
PID 2276 wrote to memory of 2308	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	88
PID 2276 wrote to memory of 3892	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	92
PID 2276 wrote to memory of 3892	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	92
PID 2276 wrote to memory of 3892	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	92
PID 2276 wrote to memory of 4672	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	95
PID 2276 wrote to memory of 4672	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	95
PID 2276 wrote to memory of 4672	2276	JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe	95
PID 3888 wrote to memory of 2520	3888	amyggrgo.exe	100
PID 3888 wrote to memory of 2520	3888	amyggrgo.exe	100
PID 3888 wrote to memory of 2520	3888	amyggrgo.exe	100
PID 3888 wrote to memory of 2520	3888	amyggrgo.exe	100
PID 3888 wrote to memory of 2520	3888	amyggrgo.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oobxwezm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\amyggrgo.exe" C:\Windows\SysWOW64\oobxwezm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oobxwezm binPath= "C:\Windows\SysWOW64\oobxwezm\amyggrgo.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oobxwezm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oobxwezm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3892
- 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:4672

C:\Windows\SysWOW64\oobxwezm\amyggrgo.exe
C:\Windows\SysWOW64\oobxwezm\amyggrgo.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6ceb9a72d32552da5885593938dca574bf043d6f39ee5443e2803dfcfae5f18d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3888
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2520

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\amyggrgo.exe

Filesize
13.6MB

MD5
a48c0f85fe01122881f1586b6d5cf170

SHA1
24b9a6cb08c9fc0c3bdc090c959d9d963773467e

SHA256
d6fd0032ea3fac862608d29dda08663149c14792d0e6567dc6a7db6e74bc2cc7

SHA512
a2a42d507222a9d14e23f11b5d4db67bc49641e3618c79e32b5e88fea48224bf61bfc5a2b49f520440d6b0ded123c292c13d136cd8a7bb959916d0c2f6b489ed

Download Submit
memory/2276-9-0x0000000000540000-0x0000000000553000-memory.dmp

Filesize
76KB

Download
memory/2276-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2276-2-0x0000000000540000-0x0000000000553000-memory.dmp

Filesize
76KB

Download
memory/2276-8-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/2276-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2276-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/2520-14-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/2520-16-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/2520-19-0x0000000000860000-0x0000000000875000-memory.dmp

Filesize
84KB

Download
memory/3888-11-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/3888-13-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/3888-12-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/3888-18-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads