tofsee | 6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b

Analysis

max time kernel
147s
max time network
147s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 05:24

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General

Target

JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe
Size

272KB
MD5

4520ebb24e27fa71848c62c3a03eb5f3
SHA1

c1cb8e3ad5b5723eb7c04cc9d7aebc142de475af
SHA256

6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b
SHA512

56ceac8dcfaff0ce532a3317a062003c4dc33b4f3b733b7abb6c86bb9bfc16cae9e58672d7fcf9de929c84ffe79426078150f83be7d6321c8d0a8063eea5f0f8
SSDEEP

6144:GsJ+2+nV2Lv+yhKk80Uwb31Ct6KROhxxpeTr/ekI:VsVncCyhKk80Uea6/zxp6L

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\goazxueb = "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
3024	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\goazxueb\ImagePath = "C:\\Windows\\SysWOW64\\goazxueb\\rwskilx.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2848	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2876	rwskilx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2876 set thread context of 2848	2876	rwskilx.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2096	sc.exe
2508	sc.exe
2764	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 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rwskilx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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	sc.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	svchost.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2592	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	30
PID 2128 wrote to memory of 2592	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	30
PID 2128 wrote to memory of 2592	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	30
PID 2128 wrote to memory of 2592	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	30
PID 2128 wrote to memory of 2332	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	32
PID 2128 wrote to memory of 2332	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	32
PID 2128 wrote to memory of 2332	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	32
PID 2128 wrote to memory of 2332	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	32
PID 2128 wrote to memory of 2096	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	34
PID 2128 wrote to memory of 2096	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	34
PID 2128 wrote to memory of 2096	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	34
PID 2128 wrote to memory of 2096	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	34
PID 2128 wrote to memory of 2508	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	36
PID 2128 wrote to memory of 2508	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	36
PID 2128 wrote to memory of 2508	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	36
PID 2128 wrote to memory of 2508	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	36
PID 2128 wrote to memory of 2764	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	38
PID 2128 wrote to memory of 2764	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	38
PID 2128 wrote to memory of 2764	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	38
PID 2128 wrote to memory of 2764	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	38
PID 2128 wrote to memory of 3024	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	41
PID 2128 wrote to memory of 3024	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	41
PID 2128 wrote to memory of 3024	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	41
PID 2128 wrote to memory of 3024	2128	JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe	41
PID 2876 wrote to memory of 2848	2876	rwskilx.exe	43
PID 2876 wrote to memory of 2848	2876	rwskilx.exe	43
PID 2876 wrote to memory of 2848	2876	rwskilx.exe	43
PID 2876 wrote to memory of 2848	2876	rwskilx.exe	43
PID 2876 wrote to memory of 2848	2876	rwskilx.exe	43
PID 2876 wrote to memory of 2848	2876	rwskilx.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\goazxueb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2592
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rwskilx.exe" C:\Windows\SysWOW64\goazxueb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create goazxueb binPath= "C:\Windows\SysWOW64\goazxueb\rwskilx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2096
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description goazxueb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2508
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start goazxueb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2764
- 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:3024

C:\Windows\SysWOW64\goazxueb\rwskilx.exe
C:\Windows\SysWOW64\goazxueb\rwskilx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_6a412c52254c5a3c2c51377239d76ec9e7feba6132218f07c83a50a660f5757b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2876
- 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:2848

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\rwskilx.exe

Filesize
13.7MB

MD5
cfcd44d280bcffa35043f734323bdda3

SHA1
1aa7af47eb3d625813a7e682183981c9e830a667

SHA256
e5015b1332c4584b32b0b9fe66b8b835ee58b70307058fdaabe1107625d0112d

SHA512
fb85a685867c699b495c3e7e57585aef912c98f5f1d5ef47da15501763e63ae295de5cdbbfefcccd06b271eac04777b46ef99218db22323857ee41b22f0edc47

Download Submit
memory/2128-8-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2128-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2128-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2128-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2128-9-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2128-1-0x00000000002F0000-0x00000000003F0000-memory.dmp

Filesize
1024KB

Download
memory/2848-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2848-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2848-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2848-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2848-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2876-17-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads