tofsee | 1a492ad6535cd37ef709e803d55e4bf9086eac1ffe5d5b3f93fd54c2e0578733

General

Target

0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe
Size

12.7MB
MD5

0ee3b729ec821e3c2cc92e2604836b13
SHA1

cbe962cc4ec46f2c6be966ea974b7320ad72c10e
SHA256

1a492ad6535cd37ef709e803d55e4bf9086eac1ffe5d5b3f93fd54c2e0578733
SHA512

7025ad83ba44a2da1e6e951950f38d7239924c11d21d6931efb29be0660596cdb8c6be42cf9614646c6cb27148ae2979fb149550b7d15cbcc07e9e756bc3ea29
SSDEEP

98304:Z999999999999999999999999999999999999999999999999999999999999999:

Score

10^/10

tofsee evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

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

Processes:

netsh.exe

pid process

3788 netsh.exe

pid	process
3788	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\kfkrmmqx\ImagePath = "C:\\Windows\\SysWOW64\\kfkrmmqx\\fkxxazpu.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

Processes:

0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2080292272-204036150-2159171770-1000\Control Panel\International\Geo\Nation	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4596 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

fkxxazpu.exe

pid process

1868 fkxxazpu.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

fkxxazpu.exe

description pid process target process

PID 1868 set thread context of 4596 1868 fkxxazpu.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

5024 sc.exe
2892 sc.exe
2788 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4596	svchost.exe

pid	process
1868	fkxxazpu.exe

description	pid	process	target process
PID 1868 set thread context of 4596	1868	fkxxazpu.exe	svchost.exe

pid	process
5024	sc.exe
2892	sc.exe
2788	sc.exe

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

Processes:

netsh.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exefkxxazpu.exe

description	pid	process	target process
PID 540 wrote to memory of 2248	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	cmd.exe
PID 540 wrote to memory of 2248	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	cmd.exe
PID 540 wrote to memory of 2248	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	cmd.exe
PID 540 wrote to memory of 1072	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	cmd.exe
PID 540 wrote to memory of 1072	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	cmd.exe
PID 540 wrote to memory of 1072	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	cmd.exe
PID 540 wrote to memory of 2788	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	sc.exe
PID 540 wrote to memory of 2788	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	sc.exe
PID 540 wrote to memory of 2788	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	sc.exe
PID 540 wrote to memory of 5024	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	sc.exe
PID 540 wrote to memory of 5024	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	sc.exe
PID 540 wrote to memory of 5024	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	sc.exe
PID 540 wrote to memory of 2892	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	sc.exe
PID 540 wrote to memory of 2892	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	sc.exe
PID 540 wrote to memory of 2892	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	sc.exe
PID 1868 wrote to memory of 4596	1868	fkxxazpu.exe	svchost.exe
PID 1868 wrote to memory of 4596	1868	fkxxazpu.exe	svchost.exe
PID 1868 wrote to memory of 4596	1868	fkxxazpu.exe	svchost.exe
PID 1868 wrote to memory of 4596	1868	fkxxazpu.exe	svchost.exe
PID 1868 wrote to memory of 4596	1868	fkxxazpu.exe	svchost.exe
PID 540 wrote to memory of 3788	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	netsh.exe
PID 540 wrote to memory of 3788	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	netsh.exe
PID 540 wrote to memory of 3788	540	0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:540

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\kfkrmmqx\
2⤵
PID:2248

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fkxxazpu.exe" C:\Windows\SysWOW64\kfkrmmqx\
2⤵
PID:1072

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create kfkrmmqx binPath= "C:\Windows\SysWOW64\kfkrmmqx\fkxxazpu.exe /d\"C:\Users\Admin\AppData\Local\Temp\0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2788

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description kfkrmmqx "wifi internet conection"
2⤵
- Launches sc.exe
PID:5024

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start kfkrmmqx
2⤵
- Launches sc.exe
PID:2892

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
PID:3788

C:\Windows\SysWOW64\kfkrmmqx\fkxxazpu.exe
C:\Windows\SysWOW64\kfkrmmqx\fkxxazpu.exe /d"C:\Users\Admin\AppData\Local\Temp\0ee3b729ec821e3c2cc92e2604836b13_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1868

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4596

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\fkxxazpu.exe

Filesize
13.4MB

MD5
882b0ae79e2201efdb1b6533b101f682

SHA1
4e6c33f99513b0ead9f6c5dbc16fd866e5e36357

SHA256
8e8a8832f93c61a5a848a87c8a6c93d6b8e486dd6678940143bdd8beae10c311

SHA512
c2ab21fa71e760b58e840cb168b953b34ee18fce8497aa8310d67bf2859c21362aca8a6753afc4749a4d0c762e107898b47a9c47a129b7b600edc627338aa21a

Download Submit
memory/540-16-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/540-3-0x0000000000890000-0x0000000000891000-memory.dmp

Filesize
4KB

Download
memory/540-2-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/540-1-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/540-0-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1868-7-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1868-12-0x0000000000400000-0x000000000041E000-memory.dmp

Filesize
120KB

Download
memory/1868-11-0x000000005F000000-0x000000005F011000-memory.dmp

Filesize
68KB

Download
memory/4596-9-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/4596-15-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/4596-18-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/4596-19-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download
memory/4596-20-0x0000000000BC0000-0x0000000000BD5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads