tofsee | 8c916ed8a94497730292e458d978e791feb7d13153629b659ac635d393c47463

General

Target

f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe
Size

329KB
MD5

f480c4c267b19e122e2a8538b874e36d
SHA1

fb0bc1a4100646812cb4fd98bb9eed597bb30742
SHA256

8c916ed8a94497730292e458d978e791feb7d13153629b659ac635d393c47463
SHA512

6965a0b6f88ea49a06f46b6ae28091ca71e21426b9e80a9b60b550c70d42534ff7a4534e7b735c63b974b2baae6679b5856cfd632c4ad9fc2800ea3cb510cdea
SSDEEP

6144:N8yvuEffTrVKi7DIdJK6f89HQBPftMBH5rpDSYkoKW5hhaYpZ2dX+GKT:j/ffnv7DuKn9HgN6HdhkW5yzbK

Score

10^/10

tofsee evasion persistence 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) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

4996 netsh.exe

pid	process
4996	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\idtiupyv\ImagePath = "C:\\Windows\\SysWOW64\\idtiupyv\\ccviurqs.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:

f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

ccviurqs.exe

pid process

2492 ccviurqs.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ccviurqs.exe

description pid process target process

PID 2492 set thread context of 1980 2492 ccviurqs.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

2596 sc.exe
232 sc.exe
320 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2492	ccviurqs.exe

description	pid	process	target process
PID 2492 set thread context of 1980	2492	ccviurqs.exe	svchost.exe

pid	process
2596	sc.exe
232	sc.exe
320	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.execcviurqs.exe

description	pid	process	target process
PID 4216 wrote to memory of 2980	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	cmd.exe
PID 4216 wrote to memory of 2980	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	cmd.exe
PID 4216 wrote to memory of 2980	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	cmd.exe
PID 4216 wrote to memory of 2956	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	cmd.exe
PID 4216 wrote to memory of 2956	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	cmd.exe
PID 4216 wrote to memory of 2956	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	cmd.exe
PID 4216 wrote to memory of 2596	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	sc.exe
PID 4216 wrote to memory of 2596	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	sc.exe
PID 4216 wrote to memory of 2596	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	sc.exe
PID 4216 wrote to memory of 232	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	sc.exe
PID 4216 wrote to memory of 232	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	sc.exe
PID 4216 wrote to memory of 232	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	sc.exe
PID 4216 wrote to memory of 320	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	sc.exe
PID 4216 wrote to memory of 320	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	sc.exe
PID 4216 wrote to memory of 320	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	sc.exe
PID 4216 wrote to memory of 4996	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	netsh.exe
PID 4216 wrote to memory of 4996	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	netsh.exe
PID 4216 wrote to memory of 4996	4216	f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe	netsh.exe
PID 2492 wrote to memory of 1980	2492	ccviurqs.exe	svchost.exe
PID 2492 wrote to memory of 1980	2492	ccviurqs.exe	svchost.exe
PID 2492 wrote to memory of 1980	2492	ccviurqs.exe	svchost.exe
PID 2492 wrote to memory of 1980	2492	ccviurqs.exe	svchost.exe
PID 2492 wrote to memory of 1980	2492	ccviurqs.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4216

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\idtiupyv\
2⤵
PID:2980

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ccviurqs.exe" C:\Windows\SysWOW64\idtiupyv\
2⤵
PID:2956

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create idtiupyv binPath= "C:\Windows\SysWOW64\idtiupyv\ccviurqs.exe /d\"C:\Users\Admin\AppData\Local\Temp\f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2596

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description idtiupyv "wifi internet conection"
2⤵
- Launches sc.exe
PID:232

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start idtiupyv
2⤵
- Launches sc.exe
PID:320

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
PID:4996

C:\Windows\SysWOW64\idtiupyv\ccviurqs.exe
C:\Windows\SysWOW64\idtiupyv\ccviurqs.exe /d"C:\Users\Admin\AppData\Local\Temp\f480c4c267b19e122e2a8538b874e36d_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2492

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:1980

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\ccviurqs.exe
Filesize
10.6MB

MD5
51b93489b6d6834243d04b2720f38853

SHA1
c9fbc278b13421d64ba3da3c2bd7bfd46203f5df

SHA256
2cb519938d17215f8dda9e77cdb26eeec123a3e98c33c76998516b79291aa7ba

SHA512
f6386bcd7244f9e1bb78c39be3303f7fae48645f5f32a97d245fbb7764614775280334bc2099621517db957d1fa6d315f377561ccf40791aac97a7b41ee02c07

Download Submit
memory/1980-11-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/1980-25-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/1980-17-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/1980-16-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/1980-14-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/2492-10-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2492-9-0x00000000005D0000-0x00000000005E3000-memory.dmp

Filesize
76KB

Download
memory/2492-8-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/2492-18-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4216-1-0x0000000000820000-0x0000000000920000-memory.dmp

Filesize
1024KB

Download
memory/4216-15-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4216-3-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/4216-23-0x0000000000820000-0x0000000000920000-memory.dmp

Filesize
1024KB

Download
memory/4216-2-0x00000000005C0000-0x00000000005D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads