tofsee | b2eb1eeaf6d84c8e877b366a85c7834453c04e63c0c027b0e014c62e42b69f07

General

Target

f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe
Size

12.2MB
MD5

f2d6bac2f4208d668b547848b5b846a6
SHA1

1dc64444c82eb91d175bd0490eb5147c959a5dca
SHA256

b2eb1eeaf6d84c8e877b366a85c7834453c04e63c0c027b0e014c62e42b69f07
SHA512

2efb885ca1f37d7789d6545d91ac50102f29179c84fef558e1a8655b50ba8b17eeb6d17019e535b4bed91a9841812c5701f8a6d497a652c2ed00b4506ae9146d
SSDEEP

49152:w7JggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggI:

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

2724 netsh.exe

pid	process
2724	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\qvkcfgdk\ImagePath = "C:\\Windows\\SysWOW64\\qvkcfgdk\\pnwxgcrn.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:

f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

5060 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

pnwxgcrn.exe

pid process

5040 pnwxgcrn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

pnwxgcrn.exe

description pid process target process

PID 5040 set thread context of 5060 5040 pnwxgcrn.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

1148 sc.exe
1512 sc.exe
1812 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5060	svchost.exe

pid	process
5040	pnwxgcrn.exe

description	pid	process	target process
PID 5040 set thread context of 5060	5040	pnwxgcrn.exe	svchost.exe

pid	process
1148	sc.exe
1512	sc.exe
1812	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exepnwxgcrn.exe

description	pid	process	target process
PID 2976 wrote to memory of 3740	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 3740	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 3740	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 1652	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 1652	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 1652	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	cmd.exe
PID 2976 wrote to memory of 1148	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 1148	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 1148	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 1512	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 1512	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 1512	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 1812	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 1812	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 1812	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	sc.exe
PID 2976 wrote to memory of 2724	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	netsh.exe
PID 2976 wrote to memory of 2724	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	netsh.exe
PID 2976 wrote to memory of 2724	2976	f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe	netsh.exe
PID 5040 wrote to memory of 5060	5040	pnwxgcrn.exe	svchost.exe
PID 5040 wrote to memory of 5060	5040	pnwxgcrn.exe	svchost.exe
PID 5040 wrote to memory of 5060	5040	pnwxgcrn.exe	svchost.exe
PID 5040 wrote to memory of 5060	5040	pnwxgcrn.exe	svchost.exe
PID 5040 wrote to memory of 5060	5040	pnwxgcrn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2976

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qvkcfgdk\
2⤵
PID:3740

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\pnwxgcrn.exe" C:\Windows\SysWOW64\qvkcfgdk\
2⤵
PID:1652

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create qvkcfgdk binPath= "C:\Windows\SysWOW64\qvkcfgdk\pnwxgcrn.exe /d\"C:\Users\Admin\AppData\Local\Temp\f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1148

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description qvkcfgdk "wifi internet conection"
2⤵
- Launches sc.exe
PID:1512

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start qvkcfgdk
2⤵
- Launches sc.exe
PID:1812

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:2724

C:\Windows\SysWOW64\qvkcfgdk\pnwxgcrn.exe
C:\Windows\SysWOW64\qvkcfgdk\pnwxgcrn.exe /d"C:\Users\Admin\AppData\Local\Temp\f2d6bac2f4208d668b547848b5b846a6_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:5040

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:5060

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\pnwxgcrn.exe
Filesize
10.5MB

MD5
0c07f9ba53ed10cc4a8765ef758ac27b

SHA1
5d39fd040c5d56aafd5e40eac2abbd7d6dcb342e

SHA256
6c111cd1a9edf32f1b390e605a8054b676e6e47534b2c61d6b88c3cc294d1711

SHA512
94f9981299d3819951f2d13f6411750976597374ab47c7184e7059793106d371c2111e0179ce2e2cc24289f0477c4ea27efa402d8f1cc8281916f8cfdc1792a5

Download Submit
memory/2976-1-0x00000000006A0000-0x00000000007A0000-memory.dmp

Filesize
1024KB

Download
memory/2976-2-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/2976-3-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2976-8-0x0000000000600000-0x0000000000613000-memory.dmp

Filesize
76KB

Download
memory/2976-6-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/5040-10-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/5040-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/5040-15-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/5060-12-0x0000000000DE0000-0x0000000000DF5000-memory.dmp

Filesize
84KB

Download
memory/5060-17-0x0000000000DE0000-0x0000000000DF5000-memory.dmp

Filesize
84KB

Download
memory/5060-18-0x0000000000DE0000-0x0000000000DF5000-memory.dmp

Filesize
84KB

Download
memory/5060-19-0x0000000000DE0000-0x0000000000DF5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads