tofsee | 2be4edefee6dc023948608c38015181e4e69bcf4b0ff420777b0ffefeeb26d6b

General

Target

e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe
Size

14.4MB
MD5

e007ae38e3bdc05af62cfc5d5aba87cd
SHA1

31472beeea454d34bd4be93466e231cf71c6b5ce
SHA256

2be4edefee6dc023948608c38015181e4e69bcf4b0ff420777b0ffefeeb26d6b
SHA512

f6736b45012b5c46cce0e92699100285776c6aebad99f9fac9e5fcf18f644cb6ec250c3fb4d55581672ee46e2bf9f4c19dde38f320e0f4d5586c8a5f8b7d027c
SSDEEP

49152:EwAKFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFr:Ew

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
2616	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\epelcfzc\ImagePath = "C:\\Windows\\SysWOW64\\epelcfzc\\mgcitdvb.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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4204	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
404	mgcitdvb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 404 set thread context of 4204	404	mgcitdvb.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
4816	sc.exe
2204	sc.exe
4492	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
4808	1636	WerFault.exe	82
4756	404	WerFault.exe	100

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	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mgcitdvb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 1872	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	86
PID 1636 wrote to memory of 1872	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	86
PID 1636 wrote to memory of 1872	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	86
PID 1636 wrote to memory of 1944	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	88
PID 1636 wrote to memory of 1944	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	88
PID 1636 wrote to memory of 1944	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	88
PID 1636 wrote to memory of 4816	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	92
PID 1636 wrote to memory of 4816	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	92
PID 1636 wrote to memory of 4816	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	92
PID 1636 wrote to memory of 2204	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	94
PID 1636 wrote to memory of 2204	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	94
PID 1636 wrote to memory of 2204	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	94
PID 1636 wrote to memory of 4492	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	98
PID 1636 wrote to memory of 4492	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	98
PID 1636 wrote to memory of 4492	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	98
PID 1636 wrote to memory of 2616	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	101
PID 1636 wrote to memory of 2616	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	101
PID 1636 wrote to memory of 2616	1636	e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe	101
PID 404 wrote to memory of 4204	404	mgcitdvb.exe	106
PID 404 wrote to memory of 4204	404	mgcitdvb.exe	106
PID 404 wrote to memory of 4204	404	mgcitdvb.exe	106
PID 404 wrote to memory of 4204	404	mgcitdvb.exe	106
PID 404 wrote to memory of 4204	404	mgcitdvb.exe	106

C:\Users\Admin\AppData\Local\Temp\e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\epelcfzc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mgcitdvb.exe" C:\Windows\SysWOW64\epelcfzc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1944
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create epelcfzc binPath= "C:\Windows\SysWOW64\epelcfzc\mgcitdvb.exe /d\"C:\Users\Admin\AppData\Local\Temp\e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4816
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description epelcfzc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2204
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start epelcfzc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4492
- 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:2616
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1636 -s 1044
  2⤵
  - Program crash
  PID:4808

C:\Windows\SysWOW64\epelcfzc\mgcitdvb.exe
C:\Windows\SysWOW64\epelcfzc\mgcitdvb.exe /d"C:\Users\Admin\AppData\Local\Temp\e007ae38e3bdc05af62cfc5d5aba87cd_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:404
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 404 -s 516
  2⤵
  - Program crash
  PID:4756

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1636 -ip 1636
1⤵
PID:1672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 404 -ip 404
1⤵
PID:5100

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\mgcitdvb.exe

Filesize
11.4MB

MD5
260516967e704ff531bf91db2c2b3df4

SHA1
3ef096498c4c750e0f5ba69ad65b71a91f8b6441

SHA256
21f5565357cb901ce12a99caa85aab8a42e0c81517f9fbf78d5fcbdf086c510a

SHA512
8d661f20cb308484f457f0cfc84a56d7624494a1b52984249c4986d3f157c81376f8d0182162985b1b7538709ba2a77dbbe240ddf9747e3b3404817a05ab7731

Download Submit
memory/404-15-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/1636-1-0x0000000002D30000-0x0000000002E30000-memory.dmp

Filesize
1024KB

Download
memory/1636-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1636-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1636-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1636-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1636-8-0x0000000000400000-0x0000000002B90000-memory.dmp

Filesize
39.6MB

Download
memory/4204-13-0x0000000000530000-0x0000000000545000-memory.dmp

Filesize
84KB

Download
memory/4204-11-0x0000000000530000-0x0000000000545000-memory.dmp

Filesize
84KB

Download
memory/4204-14-0x0000000000530000-0x0000000000545000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads