tofsee | 5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
26/12/2024, 16:09 UTC

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General

Target

JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe
Size

247KB
MD5

5c185e800f8a653e337fb0bd5b9d3ad5
SHA1

101252ab446cec8362a3a4831e4b23555e352b39
SHA256

5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5
SHA512

06d5dd8f801b46cc4fe96188582892f0462975eb8a43a3beaa5c5a8c15397df95061b4ba92f5b744eaf3935cf21e3c4de86d5c56ee892b51fe7cf668fb7d1088
SSDEEP

6144:pLHu86PxLN3smqFYvuzbgwu6QigabwVf:Q86PxdvqFYunn5

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\grxftzof = "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
1928	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\grxftzof\ImagePath = "C:\\Windows\\SysWOW64\\grxftzof\\gzkalibu.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2512	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2800	gzkalibu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2800 set thread context of 2512	2800	gzkalibu.exe	42

Launches sc.exe 3 IoCs

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

pid	Process
2648	sc.exe
2452	sc.exe
2060	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gzkalibu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 1664	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	29
PID 1948 wrote to memory of 1664	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	29
PID 1948 wrote to memory of 1664	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	29
PID 1948 wrote to memory of 1664	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	29
PID 1948 wrote to memory of 1760	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	31
PID 1948 wrote to memory of 1760	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	31
PID 1948 wrote to memory of 1760	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	31
PID 1948 wrote to memory of 1760	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	31
PID 1948 wrote to memory of 2648	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	33
PID 1948 wrote to memory of 2648	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	33
PID 1948 wrote to memory of 2648	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	33
PID 1948 wrote to memory of 2648	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	33
PID 1948 wrote to memory of 2452	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	35
PID 1948 wrote to memory of 2452	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	35
PID 1948 wrote to memory of 2452	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	35
PID 1948 wrote to memory of 2452	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	35
PID 1948 wrote to memory of 2060	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	37
PID 1948 wrote to memory of 2060	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	37
PID 1948 wrote to memory of 2060	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	37
PID 1948 wrote to memory of 2060	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	37
PID 1948 wrote to memory of 1928	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	40
PID 1948 wrote to memory of 1928	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	40
PID 1948 wrote to memory of 1928	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	40
PID 1948 wrote to memory of 1928	1948	JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe	40
PID 2800 wrote to memory of 2512	2800	gzkalibu.exe	42
PID 2800 wrote to memory of 2512	2800	gzkalibu.exe	42
PID 2800 wrote to memory of 2512	2800	gzkalibu.exe	42
PID 2800 wrote to memory of 2512	2800	gzkalibu.exe	42
PID 2800 wrote to memory of 2512	2800	gzkalibu.exe	42
PID 2800 wrote to memory of 2512	2800	gzkalibu.exe	42

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\grxftzof\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1664
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gzkalibu.exe" C:\Windows\SysWOW64\grxftzof\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1760
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create grxftzof binPath= "C:\Windows\SysWOW64\grxftzof\gzkalibu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description grxftzof "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start grxftzof
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2060
- 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:1928

C:\Windows\SysWOW64\grxftzof\gzkalibu.exe
C:\Windows\SysWOW64\grxftzof\gzkalibu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5d03b64067193990a348f19d9c50637ae901bb4afd8a5158234555d7421c57a5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2800
- 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:2512

Network

DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN A

Response

microsoft.com

IN A

20.236.44.162

microsoft.com

IN A

20.112.250.133

microsoft.com

IN A

20.70.246.20

microsoft.com

IN A

20.231.239.246

microsoft.com

IN A

20.76.201.171
DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN MX

Response

microsoft.com

IN MX

microsoft-commail protectionoutlook�
DNS

microsoft-com.mail.protection.outlook.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft-com.mail.protection.outlook.com

IN A

Response

microsoft-com.mail.protection.outlook.com

IN A

52.101.40.26

microsoft-com.mail.protection.outlook.com

IN A

52.101.8.49

microsoft-com.mail.protection.outlook.com

IN A

52.101.11.0

microsoft-com.mail.protection.outlook.com

IN A

52.101.42.0
DNS

quadoil.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

quadoil.ru

IN A

Response
DNS

yahoo.com

svchost.exe

Remote address:

8.8.8.8:53

Request

yahoo.com

IN MX

Response

yahoo.com

IN MX

mta5am0yahoodnsnet

yahoo.com

IN MX

mta6�.

yahoo.com

IN MX

mta7�.
DNS

mta5.am0.yahoodns.net

svchost.exe

Remote address:

8.8.8.8:53

Request

mta5.am0.yahoodns.net

IN A

Response

mta5.am0.yahoodns.net

IN A

67.195.228.110

mta5.am0.yahoodns.net

IN A

67.195.204.79

mta5.am0.yahoodns.net

IN A

98.136.96.76

mta5.am0.yahoodns.net

IN A

67.195.204.74

mta5.am0.yahoodns.net

IN A

67.195.228.94

mta5.am0.yahoodns.net

IN A

67.195.204.73

mta5.am0.yahoodns.net

IN A

98.136.96.91

mta5.am0.yahoodns.net

IN A

98.136.96.74
DNS

lakeflex.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

lakeflex.ru

IN A

Response
DNS

google.com

svchost.exe

Remote address:

8.8.8.8:53

Request

google.com

IN MX

Response

google.com

IN MX

smtp�
DNS

smtp.google.com

svchost.exe

Remote address:

8.8.8.8:53

Request

smtp.google.com

IN A

Response

smtp.google.com

IN A

142.250.27.27

smtp.google.com

IN A

142.250.102.26

smtp.google.com

IN A

142.250.27.26

smtp.google.com

IN A

142.250.102.27
DNS

mail.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

mail.ru

IN MX

Response

mail.ru

IN MX

mxs�
DNS

mxs.mail.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

mxs.mail.ru

IN A

Response

mxs.mail.ru

IN A

217.69.139.150

mxs.mail.ru

IN A

94.100.180.31

20.236.44.162:80

microsoft.com

svchost.exe

190 B
92 B
4
2
52.101.40.26:25

microsoft-com.mail.protection.outlook.com

svchost.exe

152 B
3
67.195.228.110:25

mta5.am0.yahoodns.net

svchost.exe

152 B
3
142.250.27.27:25

smtp.google.com

svchost.exe

152 B
3
217.69.139.150:25

mxs.mail.ru

svchost.exe

152 B
3

8.8.8.8:53

microsoft.com

dns

svchost.exe

59 B
139 B
1
1

DNS Request

microsoft.com

DNS Response

20.236.44.162

20.112.250.133

20.70.246.20

20.231.239.246

20.76.201.171
8.8.8.8:53

microsoft.com

dns

svchost.exe

59 B
113 B
1
1

DNS Request

microsoft.com
8.8.8.8:53

microsoft-com.mail.protection.outlook.com

dns

svchost.exe

87 B
151 B
1
1

DNS Request

microsoft-com.mail.protection.outlook.com

DNS Response

52.101.40.26

52.101.8.49

52.101.11.0

52.101.42.0
8.8.8.8:53

quadoil.ru

dns

svchost.exe

56 B
117 B
1
1

DNS Request

quadoil.ru
8.8.8.8:53

yahoo.com

dns

svchost.exe

55 B
134 B
1
1

DNS Request

yahoo.com
8.8.8.8:53

mta5.am0.yahoodns.net

dns

svchost.exe

67 B
195 B
1
1

DNS Request

mta5.am0.yahoodns.net

DNS Response

67.195.228.110

67.195.204.79

98.136.96.76

67.195.204.74

67.195.228.94

67.195.204.73

98.136.96.91

98.136.96.74
8.8.8.8:53

lakeflex.ru

dns

svchost.exe

57 B
118 B
1
1

DNS Request

lakeflex.ru
8.8.8.8:53

google.com

dns

svchost.exe

56 B
77 B
1
1

DNS Request

google.com
8.8.8.8:53

smtp.google.com

dns

svchost.exe

61 B
125 B
1
1

DNS Request

smtp.google.com

DNS Response

142.250.27.27

142.250.102.26

142.250.27.26

142.250.102.27
8.8.8.8:53

mail.ru

dns

svchost.exe

53 B
73 B
1
1

DNS Request

mail.ru
8.8.8.8:53

mxs.mail.ru

dns

svchost.exe

57 B
89 B
1
1

DNS Request

mxs.mail.ru

DNS Response

217.69.139.150

94.100.180.31

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\gzkalibu.exe

Filesize
14.6MB

MD5
9369f67b82f46d826669fb38c8edfbe5

SHA1
c73f6a82e3344b569d855f0f99c8f111eb1c0dc2

SHA256
2161501458e44dfeb76e78897cd7cdb859886bee89c63b932baa96ac357150a6

SHA512
799b8f9689ff10efb381038d741f0b88120de657b4a536c380731bec6337f186c94bb88ca3485eb4a88c869e5613697e0a6f251442cca669f5240dced5192654

Download Submit
memory/1948-8-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/1948-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1948-1-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/1948-6-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/1948-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1948-0-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/1948-7-0x0000000000220000-0x000000000022D000-memory.dmp

Filesize
52KB

Download
memory/2512-13-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2512-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2512-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2512-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2512-17-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2800-16-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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