tofsee | 914014bdfa54711f0be7ff00b7438aa023468c87494e7ec207ae9f3e543f3d69

General

Target

f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe
Size

11.7MB
MD5

f5fc0244fac4d1134685531500b89a07
SHA1

5e378f0c50c6680eb17f41939ea0e2859a16cf46
SHA256

914014bdfa54711f0be7ff00b7438aa023468c87494e7ec207ae9f3e543f3d69
SHA512

f1d3e9924913692e495c3268814202b6d6c6598cdbcde0b21f9b34f058a25ef744f8bc814bb7a2df1c73ea25a659e7a1ed2bd77b9be83742e0870875b334c769
SSDEEP

12288:TRXQK44fy611111111111111111111111111111111111111111111111111111H:TRx2

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\sespilyg = "0"	svchost.exe

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

2672 netsh.exe

pid	process
2672	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\sespilyg\ImagePath = "C:\\Windows\\SysWOW64\\sespilyg\\hkqkzkvb.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2428 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

hkqkzkvb.exe

pid process

2432 hkqkzkvb.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

hkqkzkvb.exe

description pid process target process

PID 2432 set thread context of 2428 2432 hkqkzkvb.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

2568 sc.exe
2644 sc.exe
2696 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2428	svchost.exe

pid	process
2432	hkqkzkvb.exe

description	pid	process	target process
PID 2432 set thread context of 2428	2432	hkqkzkvb.exe	svchost.exe

pid	process
2568	sc.exe
2644	sc.exe
2696	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exehkqkzkvb.exe

description	pid	process	target process
PID 1676 wrote to memory of 2180	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	cmd.exe
PID 1676 wrote to memory of 2180	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	cmd.exe
PID 1676 wrote to memory of 2180	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	cmd.exe
PID 1676 wrote to memory of 2180	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	cmd.exe
PID 1676 wrote to memory of 2108	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	cmd.exe
PID 1676 wrote to memory of 2108	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	cmd.exe
PID 1676 wrote to memory of 2108	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	cmd.exe
PID 1676 wrote to memory of 2108	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	cmd.exe
PID 1676 wrote to memory of 2568	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2568	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2568	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2568	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2644	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2644	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2644	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2644	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2696	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2696	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2696	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2696	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	sc.exe
PID 1676 wrote to memory of 2672	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	netsh.exe
PID 1676 wrote to memory of 2672	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	netsh.exe
PID 1676 wrote to memory of 2672	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	netsh.exe
PID 1676 wrote to memory of 2672	1676	f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe	netsh.exe
PID 2432 wrote to memory of 2428	2432	hkqkzkvb.exe	svchost.exe
PID 2432 wrote to memory of 2428	2432	hkqkzkvb.exe	svchost.exe
PID 2432 wrote to memory of 2428	2432	hkqkzkvb.exe	svchost.exe
PID 2432 wrote to memory of 2428	2432	hkqkzkvb.exe	svchost.exe
PID 2432 wrote to memory of 2428	2432	hkqkzkvb.exe	svchost.exe
PID 2432 wrote to memory of 2428	2432	hkqkzkvb.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\sespilyg\
  2⤵
  PID:2180
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hkqkzkvb.exe" C:\Windows\SysWOW64\sespilyg\
  2⤵
  PID:2108
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create sespilyg binPath= "C:\Windows\SysWOW64\sespilyg\hkqkzkvb.exe /d\"C:\Users\Admin\AppData\Local\Temp\f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2568
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description sespilyg "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2644
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start sespilyg
  2⤵
  - Launches sc.exe
  PID:2696
- 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:2672

C:\Windows\SysWOW64\sespilyg\hkqkzkvb.exe
C:\Windows\SysWOW64\sespilyg\hkqkzkvb.exe /d"C:\Users\Admin\AppData\Local\Temp\f5fc0244fac4d1134685531500b89a07_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2428

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
10.6MB

MD5
cfe0d9f47ef248a885e0c3741f0a287b

SHA1
0ab9614e1af223b2c6c4567785f9dc5934bd104a

SHA256
7ffc90272e96246f83d9e571a779f5de64442f43ebbd7f5bb806892b08bd5006

SHA512
dff50730c43d2d7fec16ba09eab3d0d0163e24ab5cc7d2f0bb05458f9bb30243c8e496d50863e21d56ebee8b05d0d6b666c32a87b7540a9e22f76e56d092c4ca

Download Submit
memory/1676-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/1676-1-0x00000000034C0000-0x00000000035C0000-memory.dmp

Filesize
1024KB

Download
memory/1676-4-0x0000000000400000-0x0000000003359000-memory.dmp

Filesize
47.3MB

Download
memory/1676-7-0x0000000000400000-0x0000000003359000-memory.dmp

Filesize
47.3MB

Download
memory/2428-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2428-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2428-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2428-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2428-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2428-22-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2432-14-0x00000000034D0000-0x00000000035D0000-memory.dmp

Filesize
1024KB

Download
memory/2432-17-0x0000000000400000-0x0000000003359000-memory.dmp

Filesize
47.3MB

Download
memory/2432-9-0x0000000000400000-0x0000000003359000-memory.dmp

Filesize
47.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads