tofsee | c19cb57c9b1b07d9fce3b91c332897c54fc4587a6a35cfcf1dad7a472359994b

Analysis

max time kernel
145s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17/01/2025, 18:58 UTC

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General

Target

2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe
Size

12.7MB
MD5

5d724bae2123a62b760f822e2ec31aca
SHA1

0ef87feda2c7a82422d8d0f6e532f7dcb6626419
SHA256

c19cb57c9b1b07d9fce3b91c332897c54fc4587a6a35cfcf1dad7a472359994b
SHA512

4cf6fc1000cc7b2156ecdbd257537df77cfece6b5d0abd629260a6f265e8b042f5ea800270c6c4ad92536c4ef2fdd90e65744abe946bd313cfbcfb19ed828192
SSDEEP

49152:JqE0YKr3fYPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPn:JqtYc3

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
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
2944	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\zbiouyfx\ImagePath = "C:\\Windows\\SysWOW64\\zbiouyfx\\snrjzkmk.exe"	svchost.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe

Deletes itself 1 IoCs

pid	Process
2948	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4604	snrjzkmk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4604 set thread context of 2948	4604	snrjzkmk.exe	95

Launches sc.exe 3 IoCs

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

pid	Process
3316	sc.exe
1392	sc.exe
1872	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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2508	3492	WerFault.exe	82
2460	4604	WerFault.exe	94

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	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.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	snrjzkmk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3492 wrote to memory of 2732	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	83
PID 3492 wrote to memory of 2732	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	83
PID 3492 wrote to memory of 2732	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	83
PID 3492 wrote to memory of 400	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	85
PID 3492 wrote to memory of 400	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	85
PID 3492 wrote to memory of 400	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	85
PID 3492 wrote to memory of 3316	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	87
PID 3492 wrote to memory of 3316	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	87
PID 3492 wrote to memory of 3316	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	87
PID 3492 wrote to memory of 1392	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	89
PID 3492 wrote to memory of 1392	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	89
PID 3492 wrote to memory of 1392	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	89
PID 3492 wrote to memory of 1872	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	92
PID 3492 wrote to memory of 1872	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	92
PID 3492 wrote to memory of 1872	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	92
PID 4604 wrote to memory of 2948	4604	snrjzkmk.exe	95
PID 4604 wrote to memory of 2948	4604	snrjzkmk.exe	95
PID 4604 wrote to memory of 2948	4604	snrjzkmk.exe	95
PID 4604 wrote to memory of 2948	4604	snrjzkmk.exe	95
PID 4604 wrote to memory of 2948	4604	snrjzkmk.exe	95
PID 3492 wrote to memory of 2944	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	97
PID 3492 wrote to memory of 2944	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	97
PID 3492 wrote to memory of 2944	3492	2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe	97

C:\Users\Admin\AppData\Local\Temp\2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe
"C:\Users\Admin\AppData\Local\Temp\2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\zbiouyfx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\snrjzkmk.exe" C:\Windows\SysWOW64\zbiouyfx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:400
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create zbiouyfx binPath= "C:\Windows\SysWOW64\zbiouyfx\snrjzkmk.exe /d\"C:\Users\Admin\AppData\Local\Temp\2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3316
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description zbiouyfx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start zbiouyfx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1872
- 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:2944
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3492 -s 664
  2⤵
  - Program crash
  PID:2508

C:\Windows\SysWOW64\zbiouyfx\snrjzkmk.exe
C:\Windows\SysWOW64\zbiouyfx\snrjzkmk.exe /d"C:\Users\Admin\AppData\Local\Temp\2025-01-17_5d724bae2123a62b760f822e2ec31aca_mafia.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2948
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4604 -s 512
  2⤵
  - Program crash
  PID:2460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4604 -ip 4604
1⤵
PID:4644

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 3492 -ip 3492
1⤵
PID:4948

Network

DNS

209.205.72.20.in-addr.arpa

Remote address:

8.8.8.8:53

Request

209.205.72.20.in-addr.arpa

IN PTR

Response
DNS

24.125.209.23.in-addr.arpa

Remote address:

8.8.8.8:53

Request

24.125.209.23.in-addr.arpa

IN PTR

Response

24.125.209.23.in-addr.arpa

IN PTR

a23-209-125-24deploystaticakamaitechnologiescom
DNS

74.32.126.40.in-addr.arpa

Remote address:

8.8.8.8:53

Request

74.32.126.40.in-addr.arpa

IN PTR

Response
DNS

167.173.78.104.in-addr.arpa

Remote address:

8.8.8.8:53

Request

167.173.78.104.in-addr.arpa

IN PTR

Response

167.173.78.104.in-addr.arpa

IN PTR

a104-78-173-167deploystaticakamaitechnologiescom
DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN A

Response

microsoft.com

IN A

20.76.201.171

microsoft.com

IN A

20.70.246.20

microsoft.com

IN A

20.231.239.246

microsoft.com

IN A

20.112.250.133

microsoft.com

IN A

20.236.44.162
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

52.101.11.0

microsoft-com.mail.protection.outlook.com

IN A

52.101.40.26

microsoft-com.mail.protection.outlook.com

IN A

52.101.42.0

microsoft-com.mail.protection.outlook.com

IN A

52.101.8.49
DNS

171.201.76.20.in-addr.arpa

Remote address:

8.8.8.8:53

Request

171.201.76.20.in-addr.arpa

IN PTR

Response
DNS

149.220.183.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

149.220.183.52.in-addr.arpa

IN PTR

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

mta7�.

yahoo.com

IN MX

mta6�.
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

67.195.228.109

mta5.am0.yahoodns.net

IN A

67.195.204.74

mta5.am0.yahoodns.net

IN A

98.136.96.76

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

67.195.228.94

mta5.am0.yahoodns.net

IN A

67.195.204.77

mta5.am0.yahoodns.net

IN A

98.136.96.91
DNS

197.87.175.4.in-addr.arpa

Remote address:

8.8.8.8:53

Request

197.87.175.4.in-addr.arpa

IN PTR

Response
DNS

18.31.95.13.in-addr.arpa

Remote address:

8.8.8.8:53

Request

18.31.95.13.in-addr.arpa

IN PTR

Response
DNS

92.12.20.2.in-addr.arpa

Remote address:

8.8.8.8:53

Request

92.12.20.2.in-addr.arpa

IN PTR

Response

92.12.20.2.in-addr.arpa

IN PTR

a2-20-12-92deploystaticakamaitechnologiescom
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

172.217.218.26

smtp.google.com

IN A

108.177.127.27

smtp.google.com

IN A

108.177.127.26

smtp.google.com

IN A

142.251.31.26

smtp.google.com

IN A

172.217.218.27
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

94.100.180.31

mxs.mail.ru

IN A

217.69.139.150
DNS

13.227.111.52.in-addr.arpa

Remote address:

8.8.8.8:53

Request

13.227.111.52.in-addr.arpa

IN PTR

Response

20.76.201.171:80

microsoft.com

svchost.exe

190 B
132 B
4
3
52.101.11.0:25

microsoft-com.mail.protection.outlook.com

svchost.exe

260 B
5
43.231.4.7:443

svchost.exe

260 B
5
67.195.228.109:25

mta5.am0.yahoodns.net

svchost.exe

260 B
5
172.217.218.26:25

smtp.google.com

svchost.exe

260 B
5
43.231.4.7:443

svchost.exe

260 B
5
94.100.180.31:25

mxs.mail.ru

svchost.exe

260 B
5
43.231.4.7:443

svchost.exe

260 B
5

8.8.8.8:53

209.205.72.20.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

209.205.72.20.in-addr.arpa
8.8.8.8:53

24.125.209.23.in-addr.arpa

dns

72 B
137 B
1
1

DNS Request

24.125.209.23.in-addr.arpa
8.8.8.8:53

74.32.126.40.in-addr.arpa

dns

71 B
157 B
1
1

DNS Request

74.32.126.40.in-addr.arpa
8.8.8.8:53

167.173.78.104.in-addr.arpa

dns

73 B
139 B
1
1

DNS Request

167.173.78.104.in-addr.arpa
8.8.8.8:53

microsoft.com

dns

svchost.exe

59 B
139 B
1
1

DNS Request

microsoft.com

DNS Response

20.76.201.171

20.70.246.20

20.231.239.246

20.112.250.133

20.236.44.162
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

52.101.11.0

52.101.40.26

52.101.42.0

52.101.8.49
8.8.8.8:53

171.201.76.20.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

171.201.76.20.in-addr.arpa
8.8.8.8:53

149.220.183.52.in-addr.arpa

dns

73 B
147 B
1
1

DNS Request

149.220.183.52.in-addr.arpa
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

67.195.228.109

67.195.204.74

98.136.96.76

67.195.228.110

67.195.204.79

67.195.228.94

67.195.204.77

98.136.96.91
8.8.8.8:53

197.87.175.4.in-addr.arpa

dns

71 B
157 B
1
1

DNS Request

197.87.175.4.in-addr.arpa
8.8.8.8:53

18.31.95.13.in-addr.arpa

dns

70 B
144 B
1
1

DNS Request

18.31.95.13.in-addr.arpa
8.8.8.8:53

92.12.20.2.in-addr.arpa

dns

69 B
131 B
1
1

DNS Request

92.12.20.2.in-addr.arpa
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
141 B
1
1

DNS Request

smtp.google.com

DNS Response

172.217.218.26

108.177.127.27

108.177.127.26

142.251.31.26

172.217.218.27
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

94.100.180.31

217.69.139.150
8.8.8.8:53

13.227.111.52.in-addr.arpa

dns

72 B
158 B
1
1

DNS Request

13.227.111.52.in-addr.arpa

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

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\snrjzkmk.exe

Filesize
14.5MB

MD5
3f4c4c314a9e1e3500b0113f8815655c

SHA1
f364aebe26f744c276f7944bd52c57eae67a596e

SHA256
9ec3f86d763f85d37b64cec67cabe5a02420d653890b9ece64158b7540ef41fe

SHA512
3e0bad40bd20ddead45e2571760049d2044fe3ebae59ac5efd3d8b5bb073d5f56492320002eda9313ef202fff254a58956ddaf8e4f29bd09997441ea07598dec

Download Submit
memory/2948-8-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/2948-14-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/2948-15-0x0000000000360000-0x0000000000375000-memory.dmp

Filesize
84KB

Download
memory/3492-1-0x0000000003010000-0x0000000003110000-memory.dmp

Filesize
1024KB

Download
memory/3492-2-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/3492-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3492-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3492-12-0x0000000002EE0000-0x0000000002EF3000-memory.dmp

Filesize
76KB

Download
memory/3492-11-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download
memory/4604-10-0x0000000000400000-0x0000000002DC3000-memory.dmp

Filesize
41.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

MITRE ATT&CK Enterprise v15

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