tofsee | 02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db

General

Target

JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe
Size

217KB
MD5

edacf50354a9e6e50955d4d75dc9d3fc
SHA1

e55be89d83db2c861881ea464a3bf6323b26c4f5
SHA256

02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db
SHA512

5cbbf27ac3faf2f065f0408abdee478433e0193872fbebcb46411b3fa8c625d84f44348e64aa1a2ceac2310dcd60941f0fad47d5d40475e2fccc6b13cfc6521b
SSDEEP

3072:ShqCP0VOCAW/KEow57KVEXKS9H6U8bDCSQblkUlCyEaa:Ssb/KmXKEaU8QbfVE

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
3360	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\ytghklqw\ImagePath = "C:\\Windows\\SysWOW64\\ytghklqw\\xecnsnbp.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe

Deletes itself 1 IoCs

pid	Process
1668	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4924	xecnsnbp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4924 set thread context of 1668	4924	xecnsnbp.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4268	sc.exe
4672	sc.exe
888	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
940	856	WerFault.exe	81
3844	4924	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	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	xecnsnbp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 980	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	82
PID 856 wrote to memory of 980	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	82
PID 856 wrote to memory of 980	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	82
PID 856 wrote to memory of 232	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	84
PID 856 wrote to memory of 232	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	84
PID 856 wrote to memory of 232	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	84
PID 856 wrote to memory of 4268	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	86
PID 856 wrote to memory of 4268	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	86
PID 856 wrote to memory of 4268	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	86
PID 856 wrote to memory of 4672	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	88
PID 856 wrote to memory of 4672	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	88
PID 856 wrote to memory of 4672	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	88
PID 856 wrote to memory of 888	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	90
PID 856 wrote to memory of 888	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	90
PID 856 wrote to memory of 888	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	90
PID 856 wrote to memory of 3360	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	93
PID 856 wrote to memory of 3360	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	93
PID 856 wrote to memory of 3360	856	JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe	93
PID 4924 wrote to memory of 1668	4924	xecnsnbp.exe	98
PID 4924 wrote to memory of 1668	4924	xecnsnbp.exe	98
PID 4924 wrote to memory of 1668	4924	xecnsnbp.exe	98
PID 4924 wrote to memory of 1668	4924	xecnsnbp.exe	98
PID 4924 wrote to memory of 1668	4924	xecnsnbp.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:856
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ytghklqw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:980
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xecnsnbp.exe" C:\Windows\SysWOW64\ytghklqw\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ytghklqw binPath= "C:\Windows\SysWOW64\ytghklqw\xecnsnbp.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4268
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ytghklqw "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ytghklqw
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:888
- 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:3360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 856 -s 1028
  2⤵
  - Program crash
  PID:940

C:\Windows\SysWOW64\ytghklqw\xecnsnbp.exe
C:\Windows\SysWOW64\ytghklqw\xecnsnbp.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_02c2f7c0aa319c0d657f13416f6b0ab894908dea1d5b8a8d861bca68987d01db.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4924
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1668
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4924 -s 512
  2⤵
  - Program crash
  PID:3844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 856 -ip 856
1⤵
PID:3280

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4924 -ip 4924
1⤵
PID:3144

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\xecnsnbp.exe

Filesize
10.4MB

MD5
6d1c35ef9d7da4dac6bbe6e85e07005a

SHA1
1f6a05b6ef57a433ba2141c96727f9f21459821b

SHA256
3783059722cd73f066c65af739bf4122cec4567c45f3f378a4bf5034250d55d9

SHA512
d83f7c6c78538b87b98ced4b2c2a7faaf6a49f1e331452b4dba0e3c835a7fb464c6f1a0dcb1d9c4dd53f3d8b683155ce7b64f0105825574feb8eed01324903f7

Download Submit
memory/856-9-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/856-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/856-2-0x0000000002200000-0x0000000002213000-memory.dmp

Filesize
76KB

Download
memory/856-8-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/856-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/856-1-0x0000000000620000-0x0000000000720000-memory.dmp

Filesize
1024KB

Download
memory/1668-14-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download
memory/1668-16-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download
memory/1668-19-0x0000000000830000-0x0000000000845000-memory.dmp

Filesize
84KB

Download
memory/4924-11-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4924-12-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4924-13-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download
memory/4924-18-0x0000000000400000-0x00000000004BD000-memory.dmp

Filesize
756KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads