tofsee | 9c4312d0147836994aa702299b458611d02ede212817b5a677dfef41cd59ccc3

General

Target

badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe
Size

11.1MB
MD5

badca1fe5781d38c5ee80cb495550cf0
SHA1

a7d103fd9a1f2f95077d4b331e7a92ae843669e6
SHA256

9c4312d0147836994aa702299b458611d02ede212817b5a677dfef41cd59ccc3
SHA512

0694aa3d77d027c7196951a3fdd7361ddee98f421c30a0fd35819172566242e4d4008543e6ac5cfb34c6a7d9a1bf54e7576dd8674c6ef8a06a781830d9584b9a
SSDEEP

6144:x0YTUw7FfKLfRZm6WbrQd1svSnAKdKO3fhQCbG+2:hDhKLfRMbrA1WSAKddfHG

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
3016	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\ojwevnog\ImagePath = "C:\\Windows\\SysWOW64\\ojwevnog\\oamuufuc.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
556	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
208	oamuufuc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 208 set thread context of 556	208	oamuufuc.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
5064	sc.exe
116	sc.exe
2688	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3968	4572	WerFault.exe	82
2224	208	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	cmd.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	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oamuufuc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4572 wrote to memory of 548	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	83
PID 4572 wrote to memory of 548	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	83
PID 4572 wrote to memory of 548	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	83
PID 4572 wrote to memory of 1056	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	85
PID 4572 wrote to memory of 1056	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	85
PID 4572 wrote to memory of 1056	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	85
PID 4572 wrote to memory of 116	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	87
PID 4572 wrote to memory of 116	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	87
PID 4572 wrote to memory of 116	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	87
PID 4572 wrote to memory of 2688	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	89
PID 4572 wrote to memory of 2688	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	89
PID 4572 wrote to memory of 2688	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	89
PID 4572 wrote to memory of 5064	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	91
PID 4572 wrote to memory of 5064	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	91
PID 4572 wrote to memory of 5064	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	91
PID 4572 wrote to memory of 3016	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	94
PID 4572 wrote to memory of 3016	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	94
PID 4572 wrote to memory of 3016	4572	badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe	94
PID 208 wrote to memory of 556	208	oamuufuc.exe	100
PID 208 wrote to memory of 556	208	oamuufuc.exe	100
PID 208 wrote to memory of 556	208	oamuufuc.exe	100
PID 208 wrote to memory of 556	208	oamuufuc.exe	100
PID 208 wrote to memory of 556	208	oamuufuc.exe	100

C:\Users\Admin\AppData\Local\Temp\badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4572
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ojwevnog\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:548
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oamuufuc.exe" C:\Windows\SysWOW64\ojwevnog\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1056
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ojwevnog binPath= "C:\Windows\SysWOW64\ojwevnog\oamuufuc.exe /d\"C:\Users\Admin\AppData\Local\Temp\badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:116
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ojwevnog "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ojwevnog
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5064
- 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:3016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4572 -s 1040
  2⤵
  - Program crash
  PID:3968

C:\Windows\SysWOW64\ojwevnog\oamuufuc.exe
C:\Windows\SysWOW64\ojwevnog\oamuufuc.exe /d"C:\Users\Admin\AppData\Local\Temp\badca1fe5781d38c5ee80cb495550cf0_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:208
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:556
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 208 -s 564
  2⤵
  - Program crash
  PID:2224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4572 -ip 4572
1⤵
PID:1976

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 208 -ip 208
1⤵
PID:8

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\oamuufuc.exe

Filesize
10.8MB

MD5
bd61eafdfbd640f5fa1e3ac5823584dd

SHA1
5995ebbd0c4f77cedfb1cc4c16923958c860893f

SHA256
be52b8b1c6899bbb505131676f8549f1c250c1989971028eb3e0aef3bad6a952

SHA512
7caea597b91c96a3f08c66aead73131e594cb7810ac308509d443cee3c67b6d6260fcd171705fa17e463afbb1b760af4e4ee7fc10a539164fefe2650f8c6de40

Download Submit
memory/208-14-0x0000000000400000-0x0000000001782000-memory.dmp

Filesize
19.5MB

Download
memory/208-17-0x0000000000400000-0x0000000001782000-memory.dmp

Filesize
19.5MB

Download
memory/556-11-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/556-13-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/556-15-0x0000000000800000-0x0000000000815000-memory.dmp

Filesize
84KB

Download
memory/4572-2-0x00000000034D0000-0x00000000034E3000-memory.dmp

Filesize
76KB

Download
memory/4572-1-0x0000000001B20000-0x0000000001C20000-memory.dmp

Filesize
1024KB

Download
memory/4572-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4572-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4572-9-0x00000000034D0000-0x00000000034E3000-memory.dmp

Filesize
76KB

Download
memory/4572-8-0x0000000000400000-0x0000000001782000-memory.dmp

Filesize
19.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads