tofsee | 700fb5ae3600141c1634dcfd95fcf5c6a45c1745f42ca21d50612e442e78e4a3

General

Target

JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe
Size

10.8MB
MD5

249a58536bbcb7a6e8d6955def7e2f13
SHA1

6351d807c7eb2cb473f51011a91b6218606fab6b
SHA256

700fb5ae3600141c1634dcfd95fcf5c6a45c1745f42ca21d50612e442e78e4a3
SHA512

e080a05c501b33f7a1277ff3d5ddfb683c0880718022a29d6f2d663dd0497cca9947dded191e0bdd0a693faa2fd3fc74db3bfc5c3b57e8b5f61feda2e71b4bbb
SSDEEP

12288:yZrif5ZHYBN6U7EP9rFRnyphAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAn:yBif5ZCEFxV

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
3064	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\sumgxcil\ImagePath = "C:\\Windows\\SysWOW64\\sumgxcil\\sqayyoxn.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe

Deletes itself 1 IoCs

pid	Process
2308	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2224	sqayyoxn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2224 set thread context of 2308	2224	sqayyoxn.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2608	sc.exe
4864	sc.exe
3868	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
5012	4916	WerFault.exe	82
1288	2224	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	sqayyoxn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.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 4916 wrote to memory of 4500	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	83
PID 4916 wrote to memory of 4500	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	83
PID 4916 wrote to memory of 4500	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	83
PID 4916 wrote to memory of 984	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	85
PID 4916 wrote to memory of 984	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	85
PID 4916 wrote to memory of 984	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	85
PID 4916 wrote to memory of 2608	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	87
PID 4916 wrote to memory of 2608	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	87
PID 4916 wrote to memory of 2608	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	87
PID 4916 wrote to memory of 4864	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	89
PID 4916 wrote to memory of 4864	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	89
PID 4916 wrote to memory of 4864	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	89
PID 4916 wrote to memory of 3868	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	91
PID 4916 wrote to memory of 3868	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	91
PID 4916 wrote to memory of 3868	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	91
PID 4916 wrote to memory of 3064	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	94
PID 4916 wrote to memory of 3064	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	94
PID 4916 wrote to memory of 3064	4916	JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe	94
PID 2224 wrote to memory of 2308	2224	sqayyoxn.exe	100
PID 2224 wrote to memory of 2308	2224	sqayyoxn.exe	100
PID 2224 wrote to memory of 2308	2224	sqayyoxn.exe	100
PID 2224 wrote to memory of 2308	2224	sqayyoxn.exe	100
PID 2224 wrote to memory of 2308	2224	sqayyoxn.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sumgxcil\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sqayyoxn.exe" C:\Windows\SysWOW64\sumgxcil\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sumgxcil binPath= "C:\Windows\SysWOW64\sumgxcil\sqayyoxn.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sumgxcil "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4864
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sumgxcil
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3868
- 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:3064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4916 -s 1208
  2⤵
  - Program crash
  PID:5012

C:\Windows\SysWOW64\sumgxcil\sqayyoxn.exe
C:\Windows\SysWOW64\sumgxcil\sqayyoxn.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_249a58536bbcb7a6e8d6955def7e2f13.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2224 -s 532
  2⤵
  - Program crash
  PID:1288

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4916 -ip 4916
1⤵
PID:3216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2224 -ip 2224
1⤵
PID:4812

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\sqayyoxn.exe

Filesize
12.6MB

MD5
57a32259e50f1dc9990fb94900ae6fbd

SHA1
e7e47dd9120116bb23161cd0fc2ffee5f419d7e7

SHA256
e46ba9ac0c3a524091ea26aa1e8719a13c0060dbef5bcb2a32558145eaf62116

SHA512
f2772f8243867ad46dab33ec27523a518b6e51db932769a4381e71d978d8bc1deda1ff6b2288cbba28f00da853f318c11fb94a827d756ab421926f54b407cfce

Download Submit
memory/2224-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2224-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2224-13-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2224-19-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2308-16-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/2308-14-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/2308-17-0x0000000000750000-0x0000000000765000-memory.dmp

Filesize
84KB

Download
memory/4916-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4916-9-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4916-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/4916-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4916-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4916-1-0x00000000006C0000-0x00000000007C0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads