tofsee | 5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4

Analysis

max time kernel
146s
max time network
146s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 03:12

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General

Target

JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe
Size

164KB
MD5

55589556956e20067beacfc7f91f1214
SHA1

fdc38166363828321c4385dba80eeb0464f57618
SHA256

5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4
SHA512

8012acbb678ff4ed847e3729f286c1ee82b978a7765ddcfad7370b22909620bb6bfd93770aeba24787a125d559f12e02c95494fed7158473cb57aca50d305107
SSDEEP

3072:b1u4aoikSqnB8VsNbIvuPypJB5LViiP0aGCyS9H6l:bA4ViK8iWvuPbJEa

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

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

pid	Process
2740	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\dcjqqubx\ImagePath = "C:\\Windows\\SysWOW64\\dcjqqubx\\bnuotzmu.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2136	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2760	bnuotzmu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2760 set thread context of 2136	2760	bnuotzmu.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2828	sc.exe
2784	sc.exe
2984	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

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

description	ioc	Process
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	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.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	bnuotzmu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 2824	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	30
PID 2960 wrote to memory of 2824	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	30
PID 2960 wrote to memory of 2824	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	30
PID 2960 wrote to memory of 2824	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	30
PID 2960 wrote to memory of 1720	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	32
PID 2960 wrote to memory of 1720	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	32
PID 2960 wrote to memory of 1720	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	32
PID 2960 wrote to memory of 1720	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	32
PID 2960 wrote to memory of 2828	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	34
PID 2960 wrote to memory of 2828	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	34
PID 2960 wrote to memory of 2828	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	34
PID 2960 wrote to memory of 2828	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	34
PID 2960 wrote to memory of 2784	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	36
PID 2960 wrote to memory of 2784	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	36
PID 2960 wrote to memory of 2784	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	36
PID 2960 wrote to memory of 2784	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	36
PID 2960 wrote to memory of 2984	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	38
PID 2960 wrote to memory of 2984	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	38
PID 2960 wrote to memory of 2984	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	38
PID 2960 wrote to memory of 2984	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	38
PID 2960 wrote to memory of 2740	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	41
PID 2960 wrote to memory of 2740	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	41
PID 2960 wrote to memory of 2740	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	41
PID 2960 wrote to memory of 2740	2960	JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe	41
PID 2760 wrote to memory of 2136	2760	bnuotzmu.exe	43
PID 2760 wrote to memory of 2136	2760	bnuotzmu.exe	43
PID 2760 wrote to memory of 2136	2760	bnuotzmu.exe	43
PID 2760 wrote to memory of 2136	2760	bnuotzmu.exe	43
PID 2760 wrote to memory of 2136	2760	bnuotzmu.exe	43
PID 2760 wrote to memory of 2136	2760	bnuotzmu.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dcjqqubx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2824
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bnuotzmu.exe" C:\Windows\SysWOW64\dcjqqubx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1720
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dcjqqubx binPath= "C:\Windows\SysWOW64\dcjqqubx\bnuotzmu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2828
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dcjqqubx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2784
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dcjqqubx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2984
- 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:2740

C:\Windows\SysWOW64\dcjqqubx\bnuotzmu.exe
C:\Windows\SysWOW64\dcjqqubx\bnuotzmu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5a3a8646e50046d8f4c0ccb2a9619a89d6f0106820b809e458ea48c16b6048b4.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2760
- 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:2136

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\bnuotzmu.exe

Filesize
10.8MB

MD5
ec41ff870ad4f85f3c6a74eb67e8a4ff

SHA1
f97ea41dd8750a96a0692b4a6acb23234f465417

SHA256
c76b1eaf9c59feb40bc632ea859a01f1f17f93334e7cd6c8d724426b036d7cf5

SHA512
0da4bd79df763a7cff9f5ec7fc2d44b87f5f92d9b6f40bf8f197d455bc3b1aae1827a976c2ef248966479c9ad7567e72388b1d756c3ccbb3900455270ca12f86

Download Submit
memory/2136-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2136-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2136-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2136-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2136-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2760-15-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2960-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2960-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2960-8-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2960-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2960-9-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2960-1-0x0000000000540000-0x0000000000640000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads