tofsee | ae68b6226feff244804140604e7f8da6972ae6b0f4fb9471233e7a6cb044070e

General

Target

f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe
Size

10.2MB
MD5

f9caba13b66e0532d3eef154eb604a60
SHA1

6939cd055aa33d1448ff7a7cdac60460908da2ea
SHA256

ae68b6226feff244804140604e7f8da6972ae6b0f4fb9471233e7a6cb044070e
SHA512

82caa87e72b7ed7242e743686afde2fca9c3cb414adfcb0c651f91cb847f0b5f48e7672922c729586025e72021f89379ea8b77f759ab8a37fe84373a6e75ec48
SSDEEP

196608:O3qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqX:O

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
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
5004	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\yrgixhpl\ImagePath = "C:\\Windows\\SysWOW64\\yrgixhpl\\seqyyjyg.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-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
5100	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
984	seqyyjyg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 984 set thread context of 5100	984	seqyyjyg.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4104	sc.exe
4588	sc.exe
772	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
1972	3036	WerFault.exe	81
4452	984	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	seqyyjyg.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 724	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	82
PID 3036 wrote to memory of 724	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	82
PID 3036 wrote to memory of 724	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	82
PID 3036 wrote to memory of 2608	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	84
PID 3036 wrote to memory of 2608	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	84
PID 3036 wrote to memory of 2608	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	84
PID 3036 wrote to memory of 4588	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	86
PID 3036 wrote to memory of 4588	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	86
PID 3036 wrote to memory of 4588	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	86
PID 3036 wrote to memory of 772	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	88
PID 3036 wrote to memory of 772	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	88
PID 3036 wrote to memory of 772	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	88
PID 3036 wrote to memory of 4104	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	90
PID 3036 wrote to memory of 4104	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	90
PID 3036 wrote to memory of 4104	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	90
PID 3036 wrote to memory of 5004	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	93
PID 3036 wrote to memory of 5004	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	93
PID 3036 wrote to memory of 5004	3036	f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe	93
PID 984 wrote to memory of 5100	984	seqyyjyg.exe	98
PID 984 wrote to memory of 5100	984	seqyyjyg.exe	98
PID 984 wrote to memory of 5100	984	seqyyjyg.exe	98
PID 984 wrote to memory of 5100	984	seqyyjyg.exe	98
PID 984 wrote to memory of 5100	984	seqyyjyg.exe	98

C:\Users\Admin\AppData\Local\Temp\f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yrgixhpl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:724
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\seqyyjyg.exe" C:\Windows\SysWOW64\yrgixhpl\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yrgixhpl binPath= "C:\Windows\SysWOW64\yrgixhpl\seqyyjyg.exe /d\"C:\Users\Admin\AppData\Local\Temp\f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yrgixhpl "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:772
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yrgixhpl
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4104
- 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:5004
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3036 -s 664
  2⤵
  - Program crash
  PID:1972

C:\Windows\SysWOW64\yrgixhpl\seqyyjyg.exe
C:\Windows\SysWOW64\yrgixhpl\seqyyjyg.exe /d"C:\Users\Admin\AppData\Local\Temp\f9caba13b66e0532d3eef154eb604a60_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:984
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5100
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 984 -s 560
  2⤵
  - Program crash
  PID:4452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3036 -ip 3036
1⤵
PID:4100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 984 -ip 984
1⤵
PID:4928

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\seqyyjyg.exe

Filesize
13.3MB

MD5
8a0346c3c4438c3760c110dd13441909

SHA1
5e2f1e908f64a3447d4eb46161297737e29ef28d

SHA256
64f0ff66b09604e8a71551e728ef956d87d8006d6d87c03ebd749966cd3f1b43

SHA512
af08f59a226b0218b750938f8435d9699f2331b5fb3d3b8e533616eb6592ed2c088767ee05540e6acb336073e77c7dbc88d789aaa1515137b462d4d68b0d66bd

Download Submit
memory/984-15-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/984-14-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/3036-1-0x0000000000880000-0x0000000000980000-memory.dmp

Filesize
1024KB

Download
memory/3036-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3036-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3036-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3036-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/3036-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/5100-11-0x0000000000A90000-0x0000000000AA5000-memory.dmp

Filesize
84KB

Download
memory/5100-13-0x0000000000A90000-0x0000000000AA5000-memory.dmp

Filesize
84KB

Download
memory/5100-16-0x0000000000A90000-0x0000000000AA5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads