tofsee | bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048

General

Target

JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe
Size

233KB
MD5

d8961898d3975db92f158c4ff70fff57
SHA1

591f965bbb3222b40daff85fd859fb6844ded151
SHA256

bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048
SHA512

4e31f4c36680bfcaec5a1d036592c92581be9c70a08a9a285755daa2319ca9f38911176f151ed51f347b4dd9b9fb5159385540ac02d3fa4d358a4d85467cb9a2
SSDEEP

6144:4c8ikuMSSqBZbH7HOBPyIyf44V+qrLQTl+0i23GUZ:4c8ikvSvZbHTMkdV+yLQBiaG8

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
1964	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\iabswuwf\ImagePath = "C:\\Windows\\SysWOW64\\iabswuwf\\ubnajwxr.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe

Deletes itself 1 IoCs

pid	Process
4656	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3260	ubnajwxr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3260 set thread context of 4656	3260	ubnajwxr.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2932	sc.exe
3580	sc.exe
2588	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
2088	4744	WerFault.exe	81
2364	3260	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ubnajwxr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe
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	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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 3112	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	82
PID 4744 wrote to memory of 3112	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	82
PID 4744 wrote to memory of 3112	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	82
PID 4744 wrote to memory of 2976	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	84
PID 4744 wrote to memory of 2976	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	84
PID 4744 wrote to memory of 2976	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	84
PID 4744 wrote to memory of 2932	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	86
PID 4744 wrote to memory of 2932	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	86
PID 4744 wrote to memory of 2932	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	86
PID 4744 wrote to memory of 3580	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	88
PID 4744 wrote to memory of 3580	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	88
PID 4744 wrote to memory of 3580	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	88
PID 4744 wrote to memory of 2588	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	90
PID 4744 wrote to memory of 2588	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	90
PID 4744 wrote to memory of 2588	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	90
PID 4744 wrote to memory of 1964	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	93
PID 4744 wrote to memory of 1964	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	93
PID 4744 wrote to memory of 1964	4744	JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe	93
PID 3260 wrote to memory of 4656	3260	ubnajwxr.exe	98
PID 3260 wrote to memory of 4656	3260	ubnajwxr.exe	98
PID 3260 wrote to memory of 4656	3260	ubnajwxr.exe	98
PID 3260 wrote to memory of 4656	3260	ubnajwxr.exe	98
PID 3260 wrote to memory of 4656	3260	ubnajwxr.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\iabswuwf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3112
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ubnajwxr.exe" C:\Windows\SysWOW64\iabswuwf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create iabswuwf binPath= "C:\Windows\SysWOW64\iabswuwf\ubnajwxr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description iabswuwf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3580
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start iabswuwf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2588
- 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:1964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4744 -s 1040
  2⤵
  - Program crash
  PID:2088

C:\Windows\SysWOW64\iabswuwf\ubnajwxr.exe
C:\Windows\SysWOW64\iabswuwf\ubnajwxr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bb24d12fa50e680ede3fc873bbec9b08ff9f855c9f66f1fe404e41ecbc5cc048.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3260
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3260 -s 536
  2⤵
  - Program crash
  PID:2364

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4744 -ip 4744
1⤵
PID:2476

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 3260 -ip 3260
1⤵
PID:3492

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\ubnajwxr.exe

Filesize
13.1MB

MD5
ae4f082262bfecfb0d554fad10ce431e

SHA1
3773163e9aeaf4f74db68e464a5617149b763c1f

SHA256
0c7a170e61600e4e9c8bb1a11ee44f84f9453cde486f31b6c65b13e06e278432

SHA512
92376a8e9b09bc66f0ed85aab0032dcc65c512870b38addb2a6fbee29c7b7adbf73ac22ce4dae03eee2c0513edb4750ec8108ef4a34f6797578267ea71c7b6ae

Download Submit
memory/3260-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3260-17-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3260-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4656-13-0x0000000000B90000-0x0000000000BA5000-memory.dmp

Filesize
84KB

Download
memory/4656-15-0x0000000000B90000-0x0000000000BA5000-memory.dmp

Filesize
84KB

Download
memory/4656-16-0x0000000000B90000-0x0000000000BA5000-memory.dmp

Filesize
84KB

Download
memory/4744-9-0x00000000009B0000-0x00000000009C3000-memory.dmp

Filesize
76KB

Download
memory/4744-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4744-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4744-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4744-1-0x0000000000AB0000-0x0000000000BB0000-memory.dmp

Filesize
1024KB

Download
memory/4744-2-0x00000000009B0000-0x00000000009C3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads