tofsee | ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52

General

Target

JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe
Size

242KB
MD5

c52fdb82480e2d859a00faf94cd47285
SHA1

40e7989b436fbdf67367a8885ba9cf953793ea4a
SHA256

ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52
SHA512

d010316fbfb076cd514183d70885b9af495a5ec8721afab4de1e6dcac371d4a12dd7684ba60a46215dee91c7205c3aa6e64d55c90bdd69122ae249dbd1c1e2b1
SSDEEP

6144:dLZQVtYziDZnv76PE7QQvRdLta6R36k4igVx:BZtziDZnvmxQv/JPR36k4i

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
1704	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\uwoorbeh\ImagePath = "C:\\Windows\\SysWOW64\\uwoorbeh\\nhdjuewc.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_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe

Deletes itself 1 IoCs

pid	Process
3500	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2140	nhdjuewc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2140 set thread context of 3500	2140	nhdjuewc.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4532	sc.exe
4492	sc.exe
5100	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
704	4196	WerFault.exe	82
1780	2140	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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	nhdjuewc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4196 wrote to memory of 3812	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	83
PID 4196 wrote to memory of 3812	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	83
PID 4196 wrote to memory of 3812	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	83
PID 4196 wrote to memory of 5040	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	85
PID 4196 wrote to memory of 5040	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	85
PID 4196 wrote to memory of 5040	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	85
PID 4196 wrote to memory of 4532	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	87
PID 4196 wrote to memory of 4532	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	87
PID 4196 wrote to memory of 4532	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	87
PID 4196 wrote to memory of 4492	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	89
PID 4196 wrote to memory of 4492	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	89
PID 4196 wrote to memory of 4492	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	89
PID 4196 wrote to memory of 5100	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	91
PID 4196 wrote to memory of 5100	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	91
PID 4196 wrote to memory of 5100	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	91
PID 4196 wrote to memory of 1704	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	94
PID 4196 wrote to memory of 1704	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	94
PID 4196 wrote to memory of 1704	4196	JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe	94
PID 2140 wrote to memory of 3500	2140	nhdjuewc.exe	100
PID 2140 wrote to memory of 3500	2140	nhdjuewc.exe	100
PID 2140 wrote to memory of 3500	2140	nhdjuewc.exe	100
PID 2140 wrote to memory of 3500	2140	nhdjuewc.exe	100
PID 2140 wrote to memory of 3500	2140	nhdjuewc.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4196
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uwoorbeh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nhdjuewc.exe" C:\Windows\SysWOW64\uwoorbeh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uwoorbeh binPath= "C:\Windows\SysWOW64\uwoorbeh\nhdjuewc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4532
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uwoorbeh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4492
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uwoorbeh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5100
- 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:1704
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4196 -s 1240
  2⤵
  - Program crash
  PID:704

C:\Windows\SysWOW64\uwoorbeh\nhdjuewc.exe
C:\Windows\SysWOW64\uwoorbeh\nhdjuewc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_ca8256d0c45a22331c492aa3db86bb7e6b5ceb2c174198982e1b869bd09ccd52.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3500
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2140 -s 516
  2⤵
  - Program crash
  PID:1780

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4196 -ip 4196
1⤵
PID:3068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 2140 -ip 2140
1⤵
PID:4156

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\nhdjuewc.exe

Filesize
11.4MB

MD5
e35cb647945a93d19c7bf97456c4455d

SHA1
54a879cb7e112f04ffb46d0b68c777386f272c93

SHA256
29d83ed93e6fb913910afc3f347712d6b9d76281b7321e34de95895e8b47bb1b

SHA512
c714b5899a0053c453f33b10bfe183af56533af6a6c9ee48feff88e7eab1010a63cdf4e298d1768fa6db84665689c69275abc4b294e16bc79b5793311994256b

Download Submit
memory/2140-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2140-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/2140-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3500-13-0x0000000000500000-0x0000000000515000-memory.dmp

Filesize
84KB

Download
memory/3500-15-0x0000000000500000-0x0000000000515000-memory.dmp

Filesize
84KB

Download
memory/3500-16-0x0000000000500000-0x0000000000515000-memory.dmp

Filesize
84KB

Download
memory/4196-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4196-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/4196-9-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4196-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4196-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/4196-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads