tofsee | 899aa9dd6997669142d99322dc8151ca0bad52758a3a6680affd28447e3ca2e9

General

Target

82c2359d34d3963f1254fe66fd531487.exe
Size

14.8MB
MD5

82c2359d34d3963f1254fe66fd531487
SHA1

9881acf4de4b213f1500bc6627858257e4bbd190
SHA256

899aa9dd6997669142d99322dc8151ca0bad52758a3a6680affd28447e3ca2e9
SHA512

f98500b7f3de7e2577454c23e14eff00feb0c434ac1bc544da6e2d67d5d4ffd53d6e0d180685358ecd187ae1a1b7c5e04dedac90f844607fca0314edfc122a26
SSDEEP

6144:v+rWO2zeSPDjMXMH7Ll4aFpWVqIwUAP97GEwHrG2+e1x2:v+r1IeSXMXc7LlxWV4Ug97GZ+ej

Score

10^/10

tofsee evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan 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

Processes:

netsh.exe

pid process

1456 netsh.exe

pid	process
1456	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\cqfogjpa\ImagePath = "C:\\Windows\\SysWOW64\\cqfogjpa\\qdruwwuh.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

Processes:

82c2359d34d3963f1254fe66fd531487.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	82c2359d34d3963f1254fe66fd531487.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4672 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

qdruwwuh.exe

pid process

1196 qdruwwuh.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

qdruwwuh.exe

description pid process target process

PID 1196 set thread context of 4672 1196 qdruwwuh.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

920 sc.exe
3176 sc.exe
316 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4672	svchost.exe

pid	process
1196	qdruwwuh.exe

description	pid	process	target process
PID 1196 set thread context of 4672	1196	qdruwwuh.exe	svchost.exe

pid	process
920	sc.exe
3176	sc.exe
316	sc.exe

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

Processes:

netsh.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

82c2359d34d3963f1254fe66fd531487.exeqdruwwuh.exe

description	pid	process	target process
PID 4220 wrote to memory of 2092	4220	82c2359d34d3963f1254fe66fd531487.exe	cmd.exe
PID 4220 wrote to memory of 2092	4220	82c2359d34d3963f1254fe66fd531487.exe	cmd.exe
PID 4220 wrote to memory of 2092	4220	82c2359d34d3963f1254fe66fd531487.exe	cmd.exe
PID 4220 wrote to memory of 2244	4220	82c2359d34d3963f1254fe66fd531487.exe	cmd.exe
PID 4220 wrote to memory of 2244	4220	82c2359d34d3963f1254fe66fd531487.exe	cmd.exe
PID 4220 wrote to memory of 2244	4220	82c2359d34d3963f1254fe66fd531487.exe	cmd.exe
PID 4220 wrote to memory of 920	4220	82c2359d34d3963f1254fe66fd531487.exe	sc.exe
PID 4220 wrote to memory of 920	4220	82c2359d34d3963f1254fe66fd531487.exe	sc.exe
PID 4220 wrote to memory of 920	4220	82c2359d34d3963f1254fe66fd531487.exe	sc.exe
PID 4220 wrote to memory of 3176	4220	82c2359d34d3963f1254fe66fd531487.exe	sc.exe
PID 4220 wrote to memory of 3176	4220	82c2359d34d3963f1254fe66fd531487.exe	sc.exe
PID 4220 wrote to memory of 3176	4220	82c2359d34d3963f1254fe66fd531487.exe	sc.exe
PID 4220 wrote to memory of 316	4220	82c2359d34d3963f1254fe66fd531487.exe	sc.exe
PID 4220 wrote to memory of 316	4220	82c2359d34d3963f1254fe66fd531487.exe	sc.exe
PID 4220 wrote to memory of 316	4220	82c2359d34d3963f1254fe66fd531487.exe	sc.exe
PID 4220 wrote to memory of 1456	4220	82c2359d34d3963f1254fe66fd531487.exe	netsh.exe
PID 4220 wrote to memory of 1456	4220	82c2359d34d3963f1254fe66fd531487.exe	netsh.exe
PID 4220 wrote to memory of 1456	4220	82c2359d34d3963f1254fe66fd531487.exe	netsh.exe
PID 1196 wrote to memory of 4672	1196	qdruwwuh.exe	svchost.exe
PID 1196 wrote to memory of 4672	1196	qdruwwuh.exe	svchost.exe
PID 1196 wrote to memory of 4672	1196	qdruwwuh.exe	svchost.exe
PID 1196 wrote to memory of 4672	1196	qdruwwuh.exe	svchost.exe
PID 1196 wrote to memory of 4672	1196	qdruwwuh.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\82c2359d34d3963f1254fe66fd531487.exe
"C:\Users\Admin\AppData\Local\Temp\82c2359d34d3963f1254fe66fd531487.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4220

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cqfogjpa\
2⤵
PID:2092

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\qdruwwuh.exe" C:\Windows\SysWOW64\cqfogjpa\
2⤵
PID:2244

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create cqfogjpa binPath= "C:\Windows\SysWOW64\cqfogjpa\qdruwwuh.exe /d\"C:\Users\Admin\AppData\Local\Temp\82c2359d34d3963f1254fe66fd531487.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:920

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description cqfogjpa "wifi internet conection"
2⤵
- Launches sc.exe
PID:3176

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start cqfogjpa
2⤵
- Launches sc.exe
PID:316

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
PID:1456

C:\Windows\SysWOW64\cqfogjpa\qdruwwuh.exe
C:\Windows\SysWOW64\cqfogjpa\qdruwwuh.exe /d"C:\Users\Admin\AppData\Local\Temp\82c2359d34d3963f1254fe66fd531487.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1196

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\qdruwwuh.exe
Filesize
12.2MB

MD5
8a464a50bc9eb0ccbcae6b9268bb6c30

SHA1
56971bd6026dc018efd0e32e44a4731b0b1c906f

SHA256
95829a10f0e9545aad05bdc05e8cc23a78789aec86a2e280e343721fd9ad0014

SHA512
5b3b034abd6d5304ffe774fac5a2255b4f57d926b197c9d0c2d07656db2bfc160e17b3b4d764a069eea6b06e343d003b032364f22f7749ee7061b1a05b29449a

Download Submit
memory/1196-10-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/1196-12-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/1196-9-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4220-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download
memory/4220-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4220-7-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4220-6-0x0000000000400000-0x000000000051A000-memory.dmp

Filesize
1.1MB

Download
memory/4672-14-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/4672-11-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download
memory/4672-15-0x0000000000450000-0x0000000000465000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads