tofsee | 989453998eb96a29b42a09855a8733715faa3cf4e9110e7e0377a703763a0bf0

General

Target

85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe
Size

142KB
MD5

85f05595c757c694136ceecaab4ef1a9
SHA1

decc013e8aed5b4d1bd93880862eac3f76b7be64
SHA256

989453998eb96a29b42a09855a8733715faa3cf4e9110e7e0377a703763a0bf0
SHA512

d59f987761dbf1fe2d248ecfb179a8df306c1508f7264df2713350405fb329da7bbd8ba42611f336c5cc3a2dc54e74d0b3eafa84d20cb5ad44c9302fd275c748
SSDEEP

3072:UO8/FLfgW6rzTkYfiL2+jKfgi4m5nuGFU6W6WNE6b3U:A94zwFLnKP46uC

Score

10^/10

tofsee evasion execution 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) 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

5084 netsh.exe

pid	process
5084	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\jdxocsdx\ImagePath = "C:\\Windows\\SysWOW64\\jdxocsdx\\yaopdlnx.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:

85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1436 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

yaopdlnx.exe

pid process

2372 yaopdlnx.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

yaopdlnx.exe

description pid process target process

PID 2372 set thread context of 1436 2372 yaopdlnx.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

4760 sc.exe
4896 sc.exe
5080 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1436	svchost.exe

pid	process
2372	yaopdlnx.exe

description	pid	process	target process
PID 2372 set thread context of 1436	2372	yaopdlnx.exe	svchost.exe

pid	process
4760	sc.exe
4896	sc.exe
5080	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exeyaopdlnx.exe

description	pid	process	target process
PID 1944 wrote to memory of 2772	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	cmd.exe
PID 1944 wrote to memory of 2772	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	cmd.exe
PID 1944 wrote to memory of 2772	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	cmd.exe
PID 1944 wrote to memory of 3544	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	cmd.exe
PID 1944 wrote to memory of 3544	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	cmd.exe
PID 1944 wrote to memory of 3544	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	cmd.exe
PID 1944 wrote to memory of 4760	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	sc.exe
PID 1944 wrote to memory of 4760	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	sc.exe
PID 1944 wrote to memory of 4760	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	sc.exe
PID 1944 wrote to memory of 4896	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	sc.exe
PID 1944 wrote to memory of 4896	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	sc.exe
PID 1944 wrote to memory of 4896	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	sc.exe
PID 1944 wrote to memory of 5080	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	sc.exe
PID 1944 wrote to memory of 5080	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	sc.exe
PID 1944 wrote to memory of 5080	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	sc.exe
PID 1944 wrote to memory of 5084	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	netsh.exe
PID 1944 wrote to memory of 5084	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	netsh.exe
PID 1944 wrote to memory of 5084	1944	85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe	netsh.exe
PID 2372 wrote to memory of 1436	2372	yaopdlnx.exe	svchost.exe
PID 2372 wrote to memory of 1436	2372	yaopdlnx.exe	svchost.exe
PID 2372 wrote to memory of 1436	2372	yaopdlnx.exe	svchost.exe
PID 2372 wrote to memory of 1436	2372	yaopdlnx.exe	svchost.exe
PID 2372 wrote to memory of 1436	2372	yaopdlnx.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1944

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jdxocsdx\
2⤵
PID:2772

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yaopdlnx.exe" C:\Windows\SysWOW64\jdxocsdx\
2⤵
PID:3544

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create jdxocsdx binPath= "C:\Windows\SysWOW64\jdxocsdx\yaopdlnx.exe /d\"C:\Users\Admin\AppData\Local\Temp\85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4760

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description jdxocsdx "wifi internet conection"
2⤵
- Launches sc.exe
PID:4896

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start jdxocsdx
2⤵
- Launches sc.exe
PID:5080

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:5084

C:\Windows\SysWOW64\jdxocsdx\yaopdlnx.exe
C:\Windows\SysWOW64\jdxocsdx\yaopdlnx.exe /d"C:\Users\Admin\AppData\Local\Temp\85f05595c757c694136ceecaab4ef1a9_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2372

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:1436

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

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\yaopdlnx.exe

Filesize
11.6MB

MD5
774ca5bfc20e6cf6de94e02a6ade0855

SHA1
8304752519bc69dda7da4829c172e6451a05d31b

SHA256
5c018789c9217f7a0597a9e988b12fbe2d6cabb6fee851399c6311c6f82083d6

SHA512
d283e634c2332bcc5d26c41fff5baf198efde4c290f682e2e07733c975810f651df3e0fd4bd5f0440ba33d70285626cc7cd6abf90ed137558cf21546ae288a32

Download Submit
memory/1436-14-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/1436-16-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/1436-9-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/1436-12-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/1436-15-0x00000000012B0000-0x00000000012C5000-memory.dmp

Filesize
84KB

Download
memory/1944-1-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1944-2-0x0000000000480000-0x0000000000481000-memory.dmp

Filesize
4KB

Download
memory/1944-6-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1944-0-0x0000000000470000-0x0000000000471000-memory.dmp

Filesize
4KB

Download
memory/2372-8-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2372-13-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/2372-7-0x0000000000590000-0x0000000000591000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads