tofsee | ed7060442c3826f98ea3a5a07d275ebee8e4c9d29ea299d7d689e54fe35f963c

General

Target

8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe
Size

14.7MB
MD5

8294dd5787bd67b96be1626a0121cedb
SHA1

fff7eb9aa0c0607026f63a2e12c4452973084c7a
SHA256

ed7060442c3826f98ea3a5a07d275ebee8e4c9d29ea299d7d689e54fe35f963c
SHA512

0c5365afed982d9de2bf75658d54c7d6a3abd69a0e5c21b67e99c4b1a56e06ba31c2f24b4fc5669557c107858a681fbe13b8fe416e3105de327f71941b09c82d
SSDEEP

393216:Yrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrn:

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
812	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\yxwxpuvm\ImagePath = "C:\\Windows\\SysWOW64\\yxwxpuvm\\rhcoiuyq.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4856	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1476	rhcoiuyq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1476 set thread context of 4856	1476	rhcoiuyq.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
740	sc.exe
4704	sc.exe
4600	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
4440	2688	WerFault.exe	83
876	1476	WerFault.exe	99

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	8294dd5787bd67b96be1626a0121cedb_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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rhcoiuyq.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 2688 wrote to memory of 3508	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	87
PID 2688 wrote to memory of 3508	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	87
PID 2688 wrote to memory of 3508	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	87
PID 2688 wrote to memory of 3752	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	89
PID 2688 wrote to memory of 3752	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	89
PID 2688 wrote to memory of 3752	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	89
PID 2688 wrote to memory of 4600	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	91
PID 2688 wrote to memory of 4600	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	91
PID 2688 wrote to memory of 4600	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	91
PID 2688 wrote to memory of 740	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	95
PID 2688 wrote to memory of 740	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	95
PID 2688 wrote to memory of 740	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	95
PID 2688 wrote to memory of 4704	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	97
PID 2688 wrote to memory of 4704	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	97
PID 2688 wrote to memory of 4704	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	97
PID 2688 wrote to memory of 812	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	102
PID 2688 wrote to memory of 812	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	102
PID 2688 wrote to memory of 812	2688	8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe	102
PID 1476 wrote to memory of 4856	1476	rhcoiuyq.exe	107
PID 1476 wrote to memory of 4856	1476	rhcoiuyq.exe	107
PID 1476 wrote to memory of 4856	1476	rhcoiuyq.exe	107
PID 1476 wrote to memory of 4856	1476	rhcoiuyq.exe	107
PID 1476 wrote to memory of 4856	1476	rhcoiuyq.exe	107

C:\Users\Admin\AppData\Local\Temp\8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2688
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yxwxpuvm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3508
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rhcoiuyq.exe" C:\Windows\SysWOW64\yxwxpuvm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create yxwxpuvm binPath= "C:\Windows\SysWOW64\yxwxpuvm\rhcoiuyq.exe /d\"C:\Users\Admin\AppData\Local\Temp\8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description yxwxpuvm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start yxwxpuvm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4704
- 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:812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2688 -s 868
  2⤵
  - Program crash
  PID:4440

C:\Windows\SysWOW64\yxwxpuvm\rhcoiuyq.exe
C:\Windows\SysWOW64\yxwxpuvm\rhcoiuyq.exe /d"C:\Users\Admin\AppData\Local\Temp\8294dd5787bd67b96be1626a0121cedb_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1476
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1476 -s 516
  2⤵
  - Program crash
  PID:876

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2688 -ip 2688
1⤵
PID:700

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 1476 -ip 1476
1⤵
PID:2160

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\rhcoiuyq.exe

Filesize
10.0MB

MD5
3cf9fc740908d3503201c2ab3bf262b5

SHA1
9392de53ae44862cf3095afcaf8dca567bb22833

SHA256
071506d1e261c2b41abdb6ff0a1728d68fd2e722150593aebfcf978aa1d234c5

SHA512
52e83197e0b8483b5a65f76d9c66a0b7029b4a400355e2e0918479e09cf2d9c48e134cf30e95a5a580cabe606f843ae61c32a731aeca47d9064b790a9f1b4f24

Download Submit
memory/1476-13-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1476-11-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1476-12-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/1476-19-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2688-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2688-1-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/2688-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2688-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2688-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2688-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4856-16-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/4856-14-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/4856-17-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads