tofsee | bbabfa154211eda8107840625da2a440e6c9ba85aab42a8d870a5f862caf4dbe

General

Target

f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe
Size

14.4MB
MD5

f32ca9eb5d903eab1e1a44925ad6b06d
SHA1

bfade70a1efc8b1e6080ba077b11ded84c6459e5
SHA256

bbabfa154211eda8107840625da2a440e6c9ba85aab42a8d870a5f862caf4dbe
SHA512

a22e9a2ed01b8021f5f74af0dded81523a63c907742242d298c1290feaf616f305b4af045a6b31ff862722bd1907f3a9d338ed8707d0f04c721e9a3d44f39ffd
SSDEEP

49152:lc67fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffv:lc6

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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

4608 netsh.exe

pid	process
4608	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\ohngsxtd\ImagePath = "C:\\Windows\\SysWOW64\\ohngsxtd\\kupkbbua.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:

f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4700 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

kupkbbua.exe

pid process

2824 kupkbbua.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

kupkbbua.exe

description pid process target process

PID 2824 set thread context of 4700 2824 kupkbbua.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

1620 sc.exe
5080 sc.exe
4404 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4700	svchost.exe

pid	process
2824	kupkbbua.exe

description	pid	process	target process
PID 2824 set thread context of 4700	2824	kupkbbua.exe	svchost.exe

pid	process
1620	sc.exe
5080	sc.exe
4404	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exekupkbbua.exe

description	pid	process	target process
PID 3732 wrote to memory of 3600	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	cmd.exe
PID 3732 wrote to memory of 3600	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	cmd.exe
PID 3732 wrote to memory of 3600	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	cmd.exe
PID 3732 wrote to memory of 1128	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	cmd.exe
PID 3732 wrote to memory of 1128	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	cmd.exe
PID 3732 wrote to memory of 1128	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	cmd.exe
PID 3732 wrote to memory of 1620	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	sc.exe
PID 3732 wrote to memory of 1620	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	sc.exe
PID 3732 wrote to memory of 1620	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	sc.exe
PID 3732 wrote to memory of 5080	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	sc.exe
PID 3732 wrote to memory of 5080	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	sc.exe
PID 3732 wrote to memory of 5080	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	sc.exe
PID 3732 wrote to memory of 4404	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	sc.exe
PID 3732 wrote to memory of 4404	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	sc.exe
PID 3732 wrote to memory of 4404	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	sc.exe
PID 3732 wrote to memory of 4608	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	netsh.exe
PID 3732 wrote to memory of 4608	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	netsh.exe
PID 3732 wrote to memory of 4608	3732	f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe	netsh.exe
PID 2824 wrote to memory of 4700	2824	kupkbbua.exe	svchost.exe
PID 2824 wrote to memory of 4700	2824	kupkbbua.exe	svchost.exe
PID 2824 wrote to memory of 4700	2824	kupkbbua.exe	svchost.exe
PID 2824 wrote to memory of 4700	2824	kupkbbua.exe	svchost.exe
PID 2824 wrote to memory of 4700	2824	kupkbbua.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3732

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ohngsxtd\
2⤵
PID:3600

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kupkbbua.exe" C:\Windows\SysWOW64\ohngsxtd\
2⤵
PID:1128

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create ohngsxtd binPath= "C:\Windows\SysWOW64\ohngsxtd\kupkbbua.exe /d\"C:\Users\Admin\AppData\Local\Temp\f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1620

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description ohngsxtd "wifi internet conection"
2⤵
- Launches sc.exe
PID:5080

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start ohngsxtd
2⤵
- Launches sc.exe
PID:4404

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:4608

C:\Windows\SysWOW64\ohngsxtd\kupkbbua.exe
C:\Windows\SysWOW64\ohngsxtd\kupkbbua.exe /d"C:\Users\Admin\AppData\Local\Temp\f32ca9eb5d903eab1e1a44925ad6b06d_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2824

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4700

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\kupkbbua.exe
Filesize
13.7MB

MD5
d6b449a5229e1914df39b91f65bc818c

SHA1
6ce95c677b4a21e22a1b85dd8c210e681c857b8d

SHA256
598452804be261714e2effd214638652cc715618c6ca45c5252ff7d6111ba897

SHA512
4281e041382d09f5d342d72afc375e640feb6d4086fbbe99f59e9105f383d983aac46871a8659a70619d723876e1a3d2413e3bd6384d798c2060159f357a23fc

Download Submit
memory/2824-10-0x0000000000D30000-0x0000000000E30000-memory.dmp

Filesize
1024KB

Download
memory/2824-13-0x0000000000400000-0x0000000000C1C000-memory.dmp

Filesize
8.1MB

Download
memory/2824-15-0x0000000000400000-0x0000000000C1C000-memory.dmp

Filesize
8.1MB

Download
memory/3732-4-0x0000000000400000-0x0000000000C1C000-memory.dmp

Filesize
8.1MB

Download
memory/3732-2-0x0000000000D60000-0x0000000000D73000-memory.dmp

Filesize
76KB

Download
memory/3732-7-0x0000000000400000-0x0000000000C1C000-memory.dmp

Filesize
8.1MB

Download
memory/3732-8-0x0000000000D60000-0x0000000000D73000-memory.dmp

Filesize
76KB

Download
memory/3732-1-0x0000000000E20000-0x0000000000F20000-memory.dmp

Filesize
1024KB

Download
memory/4700-11-0x0000000001070000-0x0000000001085000-memory.dmp

Filesize
84KB

Download
memory/4700-16-0x0000000001070000-0x0000000001085000-memory.dmp

Filesize
84KB

Download
memory/4700-17-0x0000000001070000-0x0000000001085000-memory.dmp

Filesize
84KB

Download
memory/4700-18-0x0000000001070000-0x0000000001085000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads