tofsee | 0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647

Analysis

max time kernel
147s
max time network
144s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
27/01/2025, 18:46 UTC

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General

Target

0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe
Size

10.7MB
MD5

27d42e4a1a5137d5a8171fa0998feff6
SHA1

c286cbcc0c3840a5c086016a9f432acdb2466bf5
SHA256

0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647
SHA512

2df5b37a8d89a632b780c2e01c0407216b66e2c9495b55d5fb7f984d6eaad409d2a1cc1f6c25f4c26b7e0c13cc89731d0f7baef1f781da642e31cea358c422db
SSDEEP

3072:WcSKLbut7BWLMcD/FHNKZuKqtyONJvq4H6gGIvuFHrHtIxJXA4/a9t/a9t/a9t/6:gKHOWwe/RNKkK0vNdq4HZG0Wr2u

Score

10^/10

tofsee defense_evasion discovery execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

vanaheim.cn

jotunheim.name

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

defense_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\tmcohjvo = "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

defense_evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2828	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\tmcohjvo\ImagePath = "C:\\Windows\\SysWOW64\\tmcohjvo\\bqipusxp.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2972	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2812	bqipusxp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2812 set thread context of 2972	2812	bqipusxp.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2088	sc.exe
2208	sc.exe
2744	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	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bqipusxp.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	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 2436 wrote to memory of 2368	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	30
PID 2436 wrote to memory of 2368	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	30
PID 2436 wrote to memory of 2368	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	30
PID 2436 wrote to memory of 2368	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	30
PID 2436 wrote to memory of 1916	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	32
PID 2436 wrote to memory of 1916	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	32
PID 2436 wrote to memory of 1916	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	32
PID 2436 wrote to memory of 1916	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	32
PID 2436 wrote to memory of 2088	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	34
PID 2436 wrote to memory of 2088	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	34
PID 2436 wrote to memory of 2088	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	34
PID 2436 wrote to memory of 2088	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	34
PID 2436 wrote to memory of 2208	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	36
PID 2436 wrote to memory of 2208	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	36
PID 2436 wrote to memory of 2208	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	36
PID 2436 wrote to memory of 2208	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	36
PID 2436 wrote to memory of 2744	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	38
PID 2436 wrote to memory of 2744	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	38
PID 2436 wrote to memory of 2744	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	38
PID 2436 wrote to memory of 2744	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	38
PID 2436 wrote to memory of 2828	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	41
PID 2436 wrote to memory of 2828	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	41
PID 2436 wrote to memory of 2828	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	41
PID 2436 wrote to memory of 2828	2436	0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe	41
PID 2812 wrote to memory of 2972	2812	bqipusxp.exe	43
PID 2812 wrote to memory of 2972	2812	bqipusxp.exe	43
PID 2812 wrote to memory of 2972	2812	bqipusxp.exe	43
PID 2812 wrote to memory of 2972	2812	bqipusxp.exe	43
PID 2812 wrote to memory of 2972	2812	bqipusxp.exe	43
PID 2812 wrote to memory of 2972	2812	bqipusxp.exe	43

C:\Users\Admin\AppData\Local\Temp\0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe
"C:\Users\Admin\AppData\Local\Temp\0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tmcohjvo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2368
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bqipusxp.exe" C:\Windows\SysWOW64\tmcohjvo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tmcohjvo binPath= "C:\Windows\SysWOW64\tmcohjvo\bqipusxp.exe /d\"C:\Users\Admin\AppData\Local\Temp\0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2088
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tmcohjvo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tmcohjvo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2744
- 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:2828

C:\Windows\SysWOW64\tmcohjvo\bqipusxp.exe
C:\Windows\SysWOW64\tmcohjvo\bqipusxp.exe /d"C:\Users\Admin\AppData\Local\Temp\0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2812
- 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:2972

Network

DNS

microsoft.com

svchost.exe

Remote address:

8.8.8.8:53

Request

microsoft.com

IN A

Response

microsoft.com

IN A

20.70.246.20

microsoft.com

IN A

20.231.239.246

microsoft.com

IN A

20.236.44.162

microsoft.com

IN A

20.112.250.133

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

52.101.8.49

microsoft-com.mail.protection.outlook.com

IN A

52.101.40.26

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

vanaheim.cn

svchost.exe

Remote address:

8.8.8.8:53

Request

vanaheim.cn

IN A

Response

vanaheim.cn

IN A

213.178.155.86
DNS

yahoo.com

svchost.exe

Remote address:

8.8.8.8:53

Request

yahoo.com

IN MX

Response

yahoo.com

IN MX

mta6am0yahoodnsnet

yahoo.com

IN MX

mta7�.

yahoo.com

IN MX

mta5�.
DNS

mta6.am0.yahoodns.net

svchost.exe

Remote address:

8.8.8.8:53

Request

mta6.am0.yahoodns.net

IN A

Response

mta6.am0.yahoodns.net

IN A

67.195.228.106

mta6.am0.yahoodns.net

IN A

98.136.96.91

mta6.am0.yahoodns.net

IN A

67.195.204.72

mta6.am0.yahoodns.net

IN A

67.195.228.94

mta6.am0.yahoodns.net

IN A

67.195.228.111

mta6.am0.yahoodns.net

IN A

67.195.204.74

mta6.am0.yahoodns.net

IN A

67.195.204.79

mta6.am0.yahoodns.net

IN A

98.136.96.76
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

142.251.168.27

smtp.google.com

IN A

64.233.184.26

smtp.google.com

IN A

64.233.184.27

smtp.google.com

IN A

142.251.168.26

smtp.google.com

IN A

142.250.110.26
DNS

mail.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

mail.ru

IN MX

Response

mail.ru

IN MX

mxs�
DNS

mail.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

mail.ru

IN MX
DNS

mail.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

mail.ru

IN MX
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

mxs.mail.ru

svchost.exe

Remote address:

8.8.8.8:53

Request

mxs.mail.ru

IN A
DNS

jotunheim.name

svchost.exe

Remote address:

8.8.8.8:53

Request

jotunheim.name

IN A

Response

jotunheim.name

IN A

80.66.75.11

20.70.246.20:80

microsoft.com

svchost.exe

190 B
92 B
4
2
52.101.8.49:25

microsoft-com.mail.protection.outlook.com

svchost.exe

152 B
3
213.178.155.86:443

vanaheim.cn

svchost.exe

152 B
3
67.195.228.106:25

mta6.am0.yahoodns.net

svchost.exe

152 B
3
213.178.155.86:443

vanaheim.cn

svchost.exe

152 B
3
142.251.168.27:25

smtp.google.com

svchost.exe

152 B
3
213.178.155.86:443

vanaheim.cn

svchost.exe

152 B
3
94.100.180.31:25

mxs.mail.ru

svchost.exe

152 B
3
213.178.155.86:443

vanaheim.cn

svchost.exe

152 B
3
213.178.155.86:443

vanaheim.cn

svchost.exe

152 B
3
80.66.75.11:443

jotunheim.name

svchost.exe

104 B
2

8.8.8.8:53

microsoft.com

dns

svchost.exe

59 B
139 B
1
1

DNS Request

microsoft.com

DNS Response

20.70.246.20

20.231.239.246

20.236.44.162

20.112.250.133

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

52.101.8.49

52.101.40.26

52.101.11.0

52.101.42.0
8.8.8.8:53

vanaheim.cn

dns

svchost.exe

57 B
73 B
1
1

DNS Request

vanaheim.cn

DNS Response

213.178.155.86
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

mta6.am0.yahoodns.net

dns

svchost.exe

67 B
195 B
1
1

DNS Request

mta6.am0.yahoodns.net

DNS Response

67.195.228.106

98.136.96.91

67.195.204.72

67.195.228.94

67.195.228.111

67.195.204.74

67.195.204.79

98.136.96.76
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

142.251.168.27

64.233.184.26

64.233.184.27

142.251.168.26

142.250.110.26
8.8.8.8:53

mail.ru

dns

svchost.exe

159 B
73 B
3
1

DNS Request

mail.ru

DNS Request

mail.ru

DNS Request

mail.ru
8.8.8.8:53

mxs.mail.ru

dns

svchost.exe

114 B
89 B
2
1

DNS Request

mxs.mail.ru

DNS Request

mxs.mail.ru

DNS Response

94.100.180.31

217.69.139.150
8.8.8.8:53

jotunheim.name

dns

svchost.exe

60 B
76 B
1
1

DNS Request

jotunheim.name

DNS Response

80.66.75.11

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\bqipusxp.exe

Filesize
10.7MB

MD5
27d42e4a1a5137d5a8171fa0998feff6

SHA1
c286cbcc0c3840a5c086016a9f432acdb2466bf5

SHA256
0a00671012b4cc6d328abe79ae061427f25595a5996d78dba6522d13abb23647

SHA512
2df5b37a8d89a632b780c2e01c0407216b66e2c9495b55d5fb7f984d6eaad409d2a1cc1f6c25f4c26b7e0c13cc89731d0f7baef1f781da642e31cea358c422db

Download Submit
memory/2436-7-0x0000000000400000-0x0000000002284000-memory.dmp

Filesize
30.5MB

Download
memory/2436-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2436-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2436-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2436-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2436-1-0x0000000002410000-0x0000000002510000-memory.dmp

Filesize
1024KB

Download
memory/2812-17-0x0000000000400000-0x0000000002284000-memory.dmp

Filesize
30.5MB

Download
memory/2972-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2972-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2972-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2972-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2972-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Response

DNS Request

DNS Request

DNS Request

DNS Request

DNS Request

DNS Response

DNS Request

DNS Response

MITRE ATT&CK Enterprise v15

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