tofsee | cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-12-2024 23:29

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General

Target

JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe
Size

165KB
MD5

f0d2f02caedf76608c0e28ed847d3938
SHA1

9a936ac3d1ea6fe5b7910c9e324aa1e20b0c5fbb
SHA256

cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac
SHA512

b7091d2c27d15e053c02c59182917da3a6b3d3d2d7ee6db7836cfd329f41ec27438d6c524fa3393622624407370674814fc518a003e58b577ac45b714b63f260
SSDEEP

3072:JuerXeNjwKrCnQRYFGOFbNflNHfs2d4BnRoG2:VrXOjwWtr8bn9s2yC

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\icbigpm = "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
2792	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\icbigpm\ImagePath = "C:\\Windows\\SysWOW64\\icbigpm\\oydqxsrg.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
1148	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2728	oydqxsrg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2728 set thread context of 1148	2728	oydqxsrg.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2856	sc.exe
1444	sc.exe
2200	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oydqxsrg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 2332	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	31
PID 1928 wrote to memory of 2332	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	31
PID 1928 wrote to memory of 2332	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	31
PID 1928 wrote to memory of 2332	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	31
PID 1928 wrote to memory of 2768	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	33
PID 1928 wrote to memory of 2768	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	33
PID 1928 wrote to memory of 2768	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	33
PID 1928 wrote to memory of 2768	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	33
PID 1928 wrote to memory of 1444	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	35
PID 1928 wrote to memory of 1444	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	35
PID 1928 wrote to memory of 1444	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	35
PID 1928 wrote to memory of 1444	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	35
PID 1928 wrote to memory of 2200	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	37
PID 1928 wrote to memory of 2200	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	37
PID 1928 wrote to memory of 2200	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	37
PID 1928 wrote to memory of 2200	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	37
PID 1928 wrote to memory of 2856	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	39
PID 1928 wrote to memory of 2856	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	39
PID 1928 wrote to memory of 2856	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	39
PID 1928 wrote to memory of 2856	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	39
PID 2728 wrote to memory of 1148	2728	oydqxsrg.exe	42
PID 2728 wrote to memory of 1148	2728	oydqxsrg.exe	42
PID 2728 wrote to memory of 1148	2728	oydqxsrg.exe	42
PID 2728 wrote to memory of 1148	2728	oydqxsrg.exe	42
PID 2728 wrote to memory of 1148	2728	oydqxsrg.exe	42
PID 2728 wrote to memory of 1148	2728	oydqxsrg.exe	42
PID 1928 wrote to memory of 2792	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	43
PID 1928 wrote to memory of 2792	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	43
PID 1928 wrote to memory of 2792	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	43
PID 1928 wrote to memory of 2792	1928	JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\icbigpm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2332
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oydqxsrg.exe" C:\Windows\SysWOW64\icbigpm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2768
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create icbigpm binPath= "C:\Windows\SysWOW64\icbigpm\oydqxsrg.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1444
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description icbigpm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2200
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start icbigpm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2856
- 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:2792

C:\Windows\SysWOW64\icbigpm\oydqxsrg.exe
C:\Windows\SysWOW64\icbigpm\oydqxsrg.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_cfa9a2895b49972fdffd76556471aadb3e056db1605e070c902013ec57cdfcac.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2728
- 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:1148

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\oydqxsrg.exe

Filesize
13.4MB

MD5
9751243aa3a8c0fe422fe0871c51125e

SHA1
70d1773b4c5cc00aedf609ef4a55b3e1075fc86d

SHA256
3b76b9b5393a94b76e30aa272262bd81e7c9c614bc95d3dcaf929afc83b13b39

SHA512
0aad11d6cce40135fdbb4a0f0573b97533c4b615c4eaf6fc05827da6e08d4c7c9d9986c00a7bcbdb526445a132aae9d0d68c55032f9509ecc09abf9e2939f3e7

Download Submit
memory/1148-8-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1148-6-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1148-9-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1148-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1148-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1928-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1928-1-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/1928-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/1928-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1928-14-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/1928-13-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/1928-12-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download
memory/2728-11-0x0000000000400000-0x0000000000431000-memory.dmp

Filesize
196KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads