tofsee | 06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b

General

Target

JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe
Size

237KB
MD5

a8e1e66bdfc7d5f1f1eb757ac9686f22
SHA1

b7328c79b0abdfc31025b6a9f8eec0055d0a87b9
SHA256

06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b
SHA512

9f59d72958342d0224d9d3bc1658ab40352e41c341e85766b45295068d433fe2237f065774aa402cebb749c3498434831f303161f7a8ceaa2f5c9454f4099d3d
SSDEEP

6144:+X2ED6j2XJ21RnZKA/CBph7ITsq7igavwVf:+X246iXcZK5h79

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
444	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\uzwvgqrn\ImagePath = "C:\\Windows\\SysWOW64\\uzwvgqrn\\umelkbmt.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe

Deletes itself 1 IoCs

pid	Process
4628	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2676	umelkbmt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2676 set thread context of 4628	2676	umelkbmt.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4168	sc.exe
3028	sc.exe
1768	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
3388	3144	WerFault.exe	82
4200	2676	WerFault.exe	94

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	sc.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	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.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	umelkbmt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3144 wrote to memory of 4024	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	83
PID 3144 wrote to memory of 4024	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	83
PID 3144 wrote to memory of 4024	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	83
PID 3144 wrote to memory of 2052	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	85
PID 3144 wrote to memory of 2052	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	85
PID 3144 wrote to memory of 2052	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	85
PID 3144 wrote to memory of 4168	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	87
PID 3144 wrote to memory of 4168	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	87
PID 3144 wrote to memory of 4168	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	87
PID 3144 wrote to memory of 3028	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	89
PID 3144 wrote to memory of 3028	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	89
PID 3144 wrote to memory of 3028	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	89
PID 3144 wrote to memory of 1768	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	92
PID 3144 wrote to memory of 1768	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	92
PID 3144 wrote to memory of 1768	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	92
PID 3144 wrote to memory of 444	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	95
PID 3144 wrote to memory of 444	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	95
PID 3144 wrote to memory of 444	3144	JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe	95
PID 2676 wrote to memory of 4628	2676	umelkbmt.exe	101
PID 2676 wrote to memory of 4628	2676	umelkbmt.exe	101
PID 2676 wrote to memory of 4628	2676	umelkbmt.exe	101
PID 2676 wrote to memory of 4628	2676	umelkbmt.exe	101
PID 2676 wrote to memory of 4628	2676	umelkbmt.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uzwvgqrn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\umelkbmt.exe" C:\Windows\SysWOW64\uzwvgqrn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uzwvgqrn binPath= "C:\Windows\SysWOW64\uzwvgqrn\umelkbmt.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uzwvgqrn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uzwvgqrn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1768
- 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:444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3144 -s 1164
  2⤵
  - Program crash
  PID:3388

C:\Windows\SysWOW64\uzwvgqrn\umelkbmt.exe
C:\Windows\SysWOW64\uzwvgqrn\umelkbmt.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_06850f2d0142e810f57813c7c913a4e12b4c9469faf9056bc451cc31740cf96b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2676
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4628
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2676 -s 512
  2⤵
  - Program crash
  PID:4200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3144 -ip 3144
1⤵
PID:1380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 2676 -ip 2676
1⤵
PID:2612

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\umelkbmt.exe

Filesize
11.4MB

MD5
0f47dea65f8e3144a51851846f6403ea

SHA1
47b4dd9117e810f19c3c1ce21463d5d5a379102b

SHA256
f4c6645c736043d59a2bcb945dbf45007095bd0f7fd02a1dac1bbde8a898728a

SHA512
50bcd4d820aa025e2bc9a8a90c15350c42f601451ac27b91a08f843dee3a7859a973ec4ecbe26842b1140b1760a0c5038f50384fa24ff3d9c13a92f9da16567b

Download Submit
memory/2676-12-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2676-10-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2676-17-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2676-11-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/3144-8-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/3144-7-0x00000000005F0000-0x00000000005FD000-memory.dmp

Filesize
52KB

Download
memory/3144-6-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/3144-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3144-0-0x00000000005F0000-0x00000000005FD000-memory.dmp

Filesize
52KB

Download
memory/3144-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3144-1-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/4628-13-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/4628-15-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download
memory/4628-16-0x00000000005C0000-0x00000000005D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads