tofsee | ece3c96e6d9ff76cda55ebb17804eb5cb0a3928fca63f720cf2b51f94272717b

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
27-11-2024 21:56

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General

Target

a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe
Size

13.5MB
MD5

a9cc0300922517f9e2a23a8906a0f608
SHA1

bf14eeff59d959a745c06d43aa372e7b9fe9edaf
SHA256

ece3c96e6d9ff76cda55ebb17804eb5cb0a3928fca63f720cf2b51f94272717b
SHA512

fb952776ac12916c9e2cdd92d70d0c11c467e5fe3693be001c6b715b8c17a21df4631ebd84f108adaed0980efe55bdc971048e540fa1871fe820a97512b157b4
SSDEEP

12288:Kj8IJUh3rNPQTN2/bMBrow6NGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGq:KDJqrFb0on

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
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\czcvycva = "0"	svchost.exe

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
2876	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\czcvycva\ImagePath = "C:\\Windows\\SysWOW64\\czcvycva\\amyggrgo.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
1264	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

amyggrgo.exe

pid	Process
3056	amyggrgo.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

amyggrgo.exe

description	pid	Process	procid_target
PID 3056 set thread context of 1264	3056	amyggrgo.exe	44

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
2600	sc.exe
2360	sc.exe
2880	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

Processes:

netsh.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

sc.exesc.execmd.exesc.exenetsh.exeamyggrgo.exesvchost.exea9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	amyggrgo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exeamyggrgo.exe

description	pid	Process	procid_target
PID 2188 wrote to memory of 2620	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	30
PID 2188 wrote to memory of 2620	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	30
PID 2188 wrote to memory of 2620	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	30
PID 2188 wrote to memory of 2620	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	30
PID 2188 wrote to memory of 3044	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	32
PID 2188 wrote to memory of 3044	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	32
PID 2188 wrote to memory of 3044	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	32
PID 2188 wrote to memory of 3044	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	32
PID 2188 wrote to memory of 2600	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	34
PID 2188 wrote to memory of 2600	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	34
PID 2188 wrote to memory of 2600	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	34
PID 2188 wrote to memory of 2600	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	34
PID 2188 wrote to memory of 2360	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	37
PID 2188 wrote to memory of 2360	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	37
PID 2188 wrote to memory of 2360	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	37
PID 2188 wrote to memory of 2360	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	37
PID 2188 wrote to memory of 2880	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	39
PID 2188 wrote to memory of 2880	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	39
PID 2188 wrote to memory of 2880	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	39
PID 2188 wrote to memory of 2880	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	39
PID 2188 wrote to memory of 2876	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	41
PID 2188 wrote to memory of 2876	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	41
PID 2188 wrote to memory of 2876	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	41
PID 2188 wrote to memory of 2876	2188	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	41
PID 3056 wrote to memory of 1264	3056	amyggrgo.exe	44
PID 3056 wrote to memory of 1264	3056	amyggrgo.exe	44
PID 3056 wrote to memory of 1264	3056	amyggrgo.exe	44
PID 3056 wrote to memory of 1264	3056	amyggrgo.exe	44
PID 3056 wrote to memory of 1264	3056	amyggrgo.exe	44
PID 3056 wrote to memory of 1264	3056	amyggrgo.exe	44

C:\Users\Admin\AppData\Local\Temp\a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\czcvycva\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\amyggrgo.exe" C:\Windows\SysWOW64\czcvycva\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3044
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create czcvycva binPath= "C:\Windows\SysWOW64\czcvycva\amyggrgo.exe /d\"C:\Users\Admin\AppData\Local\Temp\a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2600
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description czcvycva "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2360
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start czcvycva
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2880
- 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
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2876

C:\Windows\SysWOW64\czcvycva\amyggrgo.exe
C:\Windows\SysWOW64\czcvycva\amyggrgo.exe /d"C:\Users\Admin\AppData\Local\Temp\a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1264

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
14.6MB

MD5
5b3ddaac68b60729a22a257604222378

SHA1
d2346b0cb65a4129b199389900f7c59edce73a9f

SHA256
0626147a040801a50ca11aed6ad7a09a9d175b7ef2a1bd62bd32a3ca3fb71742

SHA512
2bea413af910ee151cf040c6bd06569b12216fe29ee7fda4de80344e68878684625b68fc1187eb9a13e100948f2efdf63df8955e1fa254f3a4f45da1f3499981

Download Submit
memory/1264-11-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1264-14-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1264-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1264-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/1264-18-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2188-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2188-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2188-8-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2188-7-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2188-6-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2188-1-0x0000000000580000-0x0000000000680000-memory.dmp

Filesize
1024KB

Download
memory/3056-16-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download