tofsee | 55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 14:47

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General

Target

JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe
Size

238KB
MD5

35f9cfb5aa8bbc185b3461e3aef129ab
SHA1

020be8206e4ae134f2a23b9c7cd2a4f1e5e63c54
SHA256

55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3
SHA512

acb5aab934ed6b371b17301c5d9203eb20b5465e6ea097f11ef4bc70a97b0ad6a5df095222cc83b4589ce0f92b820384004c2d7cd2336bac8d03d413c86ab7ed
SSDEEP

6144:l0BW7hRIsq1EzccIg3PygjeN7ITsq7igavwVf:l0Y7hRIsqocS3Pyg279

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

quadoil.ru

lakeflex.ru

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\elrhidnv = "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
3032	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\elrhidnv\ImagePath = "C:\\Windows\\SysWOW64\\elrhidnv\\xmrsmuxq.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2840	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2952	xmrsmuxq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2952 set thread context of 2840	2952	xmrsmuxq.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2500	sc.exe
2504	sc.exe
2892	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	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	xmrsmuxq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 2620	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	30
PID 2604 wrote to memory of 2620	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	30
PID 2604 wrote to memory of 2620	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	30
PID 2604 wrote to memory of 2620	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	30
PID 2604 wrote to memory of 1712	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	32
PID 2604 wrote to memory of 1712	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	32
PID 2604 wrote to memory of 1712	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	32
PID 2604 wrote to memory of 1712	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	32
PID 2604 wrote to memory of 2500	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	34
PID 2604 wrote to memory of 2500	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	34
PID 2604 wrote to memory of 2500	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	34
PID 2604 wrote to memory of 2500	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	34
PID 2604 wrote to memory of 2504	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	36
PID 2604 wrote to memory of 2504	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	36
PID 2604 wrote to memory of 2504	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	36
PID 2604 wrote to memory of 2504	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	36
PID 2604 wrote to memory of 2892	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	38
PID 2604 wrote to memory of 2892	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	38
PID 2604 wrote to memory of 2892	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	38
PID 2604 wrote to memory of 2892	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	38
PID 2604 wrote to memory of 3032	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	41
PID 2604 wrote to memory of 3032	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	41
PID 2604 wrote to memory of 3032	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	41
PID 2604 wrote to memory of 3032	2604	JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe	41
PID 2952 wrote to memory of 2840	2952	xmrsmuxq.exe	43
PID 2952 wrote to memory of 2840	2952	xmrsmuxq.exe	43
PID 2952 wrote to memory of 2840	2952	xmrsmuxq.exe	43
PID 2952 wrote to memory of 2840	2952	xmrsmuxq.exe	43
PID 2952 wrote to memory of 2840	2952	xmrsmuxq.exe	43
PID 2952 wrote to memory of 2840	2952	xmrsmuxq.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\elrhidnv\
  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\xmrsmuxq.exe" C:\Windows\SysWOW64\elrhidnv\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create elrhidnv binPath= "C:\Windows\SysWOW64\elrhidnv\xmrsmuxq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2500
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description elrhidnv "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start elrhidnv
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2892
- 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:3032

C:\Windows\SysWOW64\elrhidnv\xmrsmuxq.exe
C:\Windows\SysWOW64\elrhidnv\xmrsmuxq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_55ab4ea1700f5770386e06db324f99990b6f2ca42dc339f167c52567226d72f3.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2952
- 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:2840

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\xmrsmuxq.exe

Filesize
14.3MB

MD5
f8378472a5182a6f17fb4346ee854236

SHA1
12c344685138acadf43e2768524fb8678d86546c

SHA256
ba63b414643bbc83e3e56c7ae5117ada8d42b85902daffd59c6c119196e16058

SHA512
92b88dfdba1615b8b6c67e6406f639b0dcd1112c8a16f1ace9eccc22f17302827687866ae9709c142596ad6eb90d92fae10f2a20b41d13d15ad2f237c55186f3

Download Submit
memory/2604-7-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2604-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2604-1-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2604-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2604-8-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/2604-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2604-6-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/2840-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2840-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2840-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2952-16-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads