tofsee | 2c2ad8fb26b2481604773c7755cc27156ea9a7c6d19993562bd7f3f0777e3931

Analysis

max time kernel
145s
max time network
120s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
16/04/2024, 22:19

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General

Target
f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe
Size 12.5MB
Sample240416-18ntfaff71
SHA256 2c2ad8fb26b2481604773c7755cc27156ea9a7c6d19993562bd7f3f0777e3931
MD5 f474b3b24c28e9731d49632cf52cb20a
SHA1 379128e922c6174dd9fe7f16eb1428300860ae00
SHA512 226e7ab1d0f5894532ab390960ceb10a6c5ffff97bff475fd7282eafdcd65e4e86251893950c58e48a3e2235ca4ea32f77af44ab084956048ae0e2df0d5151a8
SSDEEP 98304:FNWUlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllF:DW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\zvagoolm = "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

pid	Process
2644	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\zvagoolm\ImagePath = "C:\\Windows\\SysWOW64\\zvagoolm\\egbhanx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2740	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2580	egbhanx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2580 set thread context of 2740	2580	egbhanx.exe	41

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
2672	sc.exe
2660	sc.exe
2136	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 3024	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	28
PID 2228 wrote to memory of 3024	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	28
PID 2228 wrote to memory of 3024	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	28
PID 2228 wrote to memory of 3024	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	28
PID 2228 wrote to memory of 1796	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	30
PID 2228 wrote to memory of 1796	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	30
PID 2228 wrote to memory of 1796	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	30
PID 2228 wrote to memory of 1796	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	30
PID 2228 wrote to memory of 2672	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	32
PID 2228 wrote to memory of 2672	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	32
PID 2228 wrote to memory of 2672	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	32
PID 2228 wrote to memory of 2672	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	32
PID 2228 wrote to memory of 2660	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	34
PID 2228 wrote to memory of 2660	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	34
PID 2228 wrote to memory of 2660	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	34
PID 2228 wrote to memory of 2660	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	34
PID 2228 wrote to memory of 2136	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	36
PID 2228 wrote to memory of 2136	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	36
PID 2228 wrote to memory of 2136	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	36
PID 2228 wrote to memory of 2136	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	36
PID 2228 wrote to memory of 2644	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	39
PID 2228 wrote to memory of 2644	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	39
PID 2228 wrote to memory of 2644	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	39
PID 2228 wrote to memory of 2644	2228	f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe	39
PID 2580 wrote to memory of 2740	2580	egbhanx.exe	41
PID 2580 wrote to memory of 2740	2580	egbhanx.exe	41
PID 2580 wrote to memory of 2740	2580	egbhanx.exe	41
PID 2580 wrote to memory of 2740	2580	egbhanx.exe	41
PID 2580 wrote to memory of 2740	2580	egbhanx.exe	41
PID 2580 wrote to memory of 2740	2580	egbhanx.exe	41

C:\Users\Admin\AppData\Local\Temp\f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zvagoolm\
  2⤵
  PID:3024
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\egbhanx.exe" C:\Windows\SysWOW64\zvagoolm\
  2⤵
  PID:1796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zvagoolm binPath= "C:\Windows\SysWOW64\zvagoolm\egbhanx.exe /d\"C:\Users\Admin\AppData\Local\Temp\f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:2672
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zvagoolm "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:2660
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zvagoolm
  2⤵
  - Launches sc.exe
  PID:2136
- 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:2644

C:\Windows\SysWOW64\zvagoolm\egbhanx.exe
C:\Windows\SysWOW64\zvagoolm\egbhanx.exe /d"C:\Users\Admin\AppData\Local\Temp\f474b3b24c28e9731d49632cf52cb20a_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2580
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  PID:2740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

egbhanx.exe

Path C:\Users\Admin\AppData\Local\Temp\egbhanx.exe
Size 14.6MB
SHA256 1b0eca2b6ca9296b6c4177c1dd12a0efead0890a61337799d9701c10f6e783e7
MD5 e65def10047ae2308cfb6ba69379cdb0
SHA1 d112a8a71015a096a82bd5f0ed63137c9a6e7598
SHA512 f4080e8558641d1a2754e118f0e80c78489fc649607c662b7158800e1518d5ea8a69e66cabc7c4934a5b85c7a05bfe8966869719eb394d04511d814bf6287d39
SSDEEP 98304:JNWUlllllllllllllllllllllllllllllllllllllllllllllllllllllllllllR:/W
MD5 SHA1 SHA512 SSDEEP

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memory/2228-2-0x0000000000220000-0x0000000000233000-memory.dmp

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memory/2228-4-0x0000000000400000-0x00000000036CD000-memory.dmp

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memory/2228-7-0x0000000000400000-0x00000000036CD000-memory.dmp

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memory/2228-9-0x0000000000220000-0x0000000000233000-memory.dmp

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memory/2228-1-0x00000000037F0000-0x00000000038F0000-memory.dmp

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memory/2580-18-0x0000000000400000-0x00000000036CD000-memory.dmp

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memory/2580-10-0x0000000000400000-0x00000000036CD000-memory.dmp

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memory/2580-16-0x0000000003830000-0x0000000003930000-memory.dmp

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memory/2740-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

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memory/2740-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

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memory/2740-20-0x00000000000C0000-0x00000000000D5000-memory.dmp

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memory/2740-14-0x00000000000C0000-0x00000000000D5000-memory.dmp

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memory/2740-21-0x00000000000C0000-0x00000000000D5000-memory.dmp

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memory/2740-22-0x00000000000C0000-0x00000000000D5000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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