tofsee | 5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23

General

Target

JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe
Size

167KB
MD5

7a418d23ee221c55a141484703811b86
SHA1

e66e5b34f33f49961ed1b469fb88dd4020a3357b
SHA256

5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23
SHA512

ad35649dca8bb5720981c8941e2733c9d9dec3e6b57f70083948cb9c89b3e0d12ffee0b151dd301b0e80d3e1e3782acf7502d3302e423a5223b0a6a349264700
SSDEEP

3072:icIJ8Ty2eHnl+YF7MZrXrYLWvY25glvzs6PS9H6dYs:XIWe2eHRF7mrXsLvvzBEad

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
2736	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\gnraekru\ImagePath = "C:\\Windows\\SysWOW64\\gnraekru\\bveobejv.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe

Deletes itself 1 IoCs

pid	Process
1956	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3156	bveobejv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3156 set thread context of 1956	3156	bveobejv.exe	102

Launches sc.exe 3 IoCs

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

pid	Process
4396	sc.exe
4792	sc.exe
3552	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
1744	1688	WerFault.exe	83
3852	3156	WerFault.exe	95

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	bveobejv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 3448	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	84
PID 1688 wrote to memory of 3448	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	84
PID 1688 wrote to memory of 3448	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	84
PID 1688 wrote to memory of 2908	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	86
PID 1688 wrote to memory of 2908	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	86
PID 1688 wrote to memory of 2908	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	86
PID 1688 wrote to memory of 4396	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	88
PID 1688 wrote to memory of 4396	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	88
PID 1688 wrote to memory of 4396	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	88
PID 1688 wrote to memory of 4792	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	91
PID 1688 wrote to memory of 4792	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	91
PID 1688 wrote to memory of 4792	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	91
PID 1688 wrote to memory of 3552	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	93
PID 1688 wrote to memory of 3552	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	93
PID 1688 wrote to memory of 3552	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	93
PID 1688 wrote to memory of 2736	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	96
PID 1688 wrote to memory of 2736	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	96
PID 1688 wrote to memory of 2736	1688	JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe	96
PID 3156 wrote to memory of 1956	3156	bveobejv.exe	102
PID 3156 wrote to memory of 1956	3156	bveobejv.exe	102
PID 3156 wrote to memory of 1956	3156	bveobejv.exe	102
PID 3156 wrote to memory of 1956	3156	bveobejv.exe	102
PID 3156 wrote to memory of 1956	3156	bveobejv.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gnraekru\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3448
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bveobejv.exe" C:\Windows\SysWOW64\gnraekru\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2908
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gnraekru binPath= "C:\Windows\SysWOW64\gnraekru\bveobejv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gnraekru "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4792
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gnraekru
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3552
- 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:2736
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1688 -s 1200
  2⤵
  - Program crash
  PID:1744

C:\Windows\SysWOW64\gnraekru\bveobejv.exe
C:\Windows\SysWOW64\gnraekru\bveobejv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5315c094dff5dc94036b83598b252b83d4ba1d72f856cae3fc1dc95cf72ffd23.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3156
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1956
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3156 -s 512
  2⤵
  - Program crash
  PID:3852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1688 -ip 1688
1⤵
PID:2984

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3156 -ip 3156
1⤵
PID:1364

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\bveobejv.exe

Filesize
11.9MB

MD5
251582589a479e834600c4db8ee2067b

SHA1
50d977e354b8f8218001e8d06d23f00a3afb9422

SHA256
7d07627703d84107fce12d99cfdc95dbd5a597356346ddca1a6664e58f53dcb8

SHA512
ea4b550d59e579a660f459ad84bcde195bfc3f8dcd16a51d63ef003ca0e1e12cdc20e97d9a13840337f3ace2f92c6df69aac56a834a68ee62fcb7a7e9be44ae7

Download Submit
memory/1688-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1688-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1688-1-0x00000000006B0000-0x00000000007B0000-memory.dmp

Filesize
1024KB

Download
memory/1688-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1688-9-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/1688-2-0x00000000021F0000-0x0000000002203000-memory.dmp

Filesize
76KB

Download
memory/1956-14-0x0000000000440000-0x0000000000455000-memory.dmp

Filesize
84KB

Download
memory/1956-16-0x0000000000440000-0x0000000000455000-memory.dmp

Filesize
84KB

Download
memory/1956-17-0x0000000000440000-0x0000000000455000-memory.dmp

Filesize
84KB

Download
memory/3156-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3156-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3156-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3156-19-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads