tofsee | 5ff58c63e54e4bbbc6b4ec1aff3abb6275f8692a9f42a25dc9fcec70438a6bc6

General

Target

fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe
Size

11.8MB
MD5

fff0aab4de88fa3503e16290699ea84b
SHA1

9b6879a810a5f8609898f8f552067a237b67912b
SHA256

5ff58c63e54e4bbbc6b4ec1aff3abb6275f8692a9f42a25dc9fcec70438a6bc6
SHA512

3587ec145d1503bc06673592da1feca0e9d9fae5c6a968f2ee3d0ad37559a132a789d3e43205921413c5159c8aeac8789a4af0234ba894f74a04e9c436711c6e
SSDEEP

98304:+NWUlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllx:MW

Score

10^/10

tofsee evasion persistence 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) 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

2924 netsh.exe

pid	process
2924	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\xqxdsmy\ImagePath = "C:\\Windows\\SysWOW64\\xqxdsmy\\fioixitz.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:

fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2316 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

fioixitz.exe

pid process

2056 fioixitz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

fioixitz.exe

description pid process target process

PID 2056 set thread context of 2316 2056 fioixitz.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

4932 sc.exe
2664 sc.exe
2540 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2316	svchost.exe

pid	process
2056	fioixitz.exe

description	pid	process	target process
PID 2056 set thread context of 2316	2056	fioixitz.exe	svchost.exe

pid	process
4932	sc.exe
2664	sc.exe
2540	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exefioixitz.exe

description	pid	process	target process
PID 3212 wrote to memory of 4804	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	cmd.exe
PID 3212 wrote to memory of 4804	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	cmd.exe
PID 3212 wrote to memory of 4804	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	cmd.exe
PID 3212 wrote to memory of 2940	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	cmd.exe
PID 3212 wrote to memory of 2940	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	cmd.exe
PID 3212 wrote to memory of 2940	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	cmd.exe
PID 3212 wrote to memory of 4932	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	sc.exe
PID 3212 wrote to memory of 4932	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	sc.exe
PID 3212 wrote to memory of 4932	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	sc.exe
PID 3212 wrote to memory of 2664	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	sc.exe
PID 3212 wrote to memory of 2664	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	sc.exe
PID 3212 wrote to memory of 2664	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	sc.exe
PID 3212 wrote to memory of 2540	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	sc.exe
PID 3212 wrote to memory of 2540	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	sc.exe
PID 3212 wrote to memory of 2540	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	sc.exe
PID 3212 wrote to memory of 2924	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	netsh.exe
PID 3212 wrote to memory of 2924	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	netsh.exe
PID 3212 wrote to memory of 2924	3212	fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe	netsh.exe
PID 2056 wrote to memory of 2316	2056	fioixitz.exe	svchost.exe
PID 2056 wrote to memory of 2316	2056	fioixitz.exe	svchost.exe
PID 2056 wrote to memory of 2316	2056	fioixitz.exe	svchost.exe
PID 2056 wrote to memory of 2316	2056	fioixitz.exe	svchost.exe
PID 2056 wrote to memory of 2316	2056	fioixitz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3212

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xqxdsmy\
2⤵
PID:4804

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\fioixitz.exe" C:\Windows\SysWOW64\xqxdsmy\
2⤵
PID:2940

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create xqxdsmy binPath= "C:\Windows\SysWOW64\xqxdsmy\fioixitz.exe /d\"C:\Users\Admin\AppData\Local\Temp\fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4932

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description xqxdsmy "wifi internet conection"
2⤵
- Launches sc.exe
PID:2664

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start xqxdsmy
2⤵
- Launches sc.exe
PID:2540

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:2924

C:\Windows\SysWOW64\xqxdsmy\fioixitz.exe
C:\Windows\SysWOW64\xqxdsmy\fioixitz.exe /d"C:\Users\Admin\AppData\Local\Temp\fff0aab4de88fa3503e16290699ea84b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2056

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2316

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

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

Replay Monitor

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Downloads

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

Filesize
14.0MB

MD5
933eddeb41be73a16637acad5ce92ff1

SHA1
9e7e9fc74bee5ce81bb533fa0cb0ac95160ef1e9

SHA256
280188c901c0dcfebacb4507ed09336a1551564356535bb4b0e6bece667e4f00

SHA512
48ac9c91f53b906044d82a415d477eb92807522b66ea6c0b25bcde843ecc77dc8e24fdd5c56a72242218da0a43b1d75222810e4dfdaf9a08bfa0d8c265d59cb2

Download Submit
memory/2056-11-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/2056-13-0x0000000003960000-0x0000000003A60000-memory.dmp

Filesize
1024KB

Download
memory/2056-18-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/2316-10-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/2316-15-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/2316-16-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/2316-17-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/2316-19-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/3212-4-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/3212-2-0x0000000005410000-0x0000000005423000-memory.dmp

Filesize
76KB

Download
memory/3212-7-0x0000000000400000-0x00000000036CD000-memory.dmp

Filesize
50.8MB

Download
memory/3212-8-0x0000000005410000-0x0000000005423000-memory.dmp

Filesize
76KB

Download
memory/3212-1-0x0000000003820000-0x0000000003920000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads