tofsee | 2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5

General

Target

2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe
Size

113KB
MD5

f065237fd3b6c12dae373cf7815a92e8
SHA1

047579f3b675f1cd67e300dc065b129bf63b118f
SHA256

2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5
SHA512

8462c2a3e8d7873103b7707219485f14d2b5d591f2c276eac90ff0fad91b9bb4cef82766a218e4404739a783e7da45c5fd08ae7450c43d054a4c44064c0a9275

Score

10^/10

tofsee evasion persistence 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) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

feuqxty.exe

pid process

1784 feuqxty.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3028 netsh.exe

pid	process
1784	feuqxty.exe

pid	process
3028	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svchost.exe

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

2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

feuqxty.exe

description pid process target process

PID 1784 set thread context of 1732 1784 feuqxty.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

1156 sc.exe
4856 sc.exe
4284 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 1784 set thread context of 1732	1784	feuqxty.exe	svchost.exe

pid	process
1156	sc.exe
4856	sc.exe
4284	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exefeuqxty.exe

description	pid	process	target process
PID 5072 wrote to memory of 444	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	cmd.exe
PID 5072 wrote to memory of 444	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	cmd.exe
PID 5072 wrote to memory of 444	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	cmd.exe
PID 5072 wrote to memory of 3156	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	cmd.exe
PID 5072 wrote to memory of 3156	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	cmd.exe
PID 5072 wrote to memory of 3156	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	cmd.exe
PID 5072 wrote to memory of 1156	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	sc.exe
PID 5072 wrote to memory of 1156	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	sc.exe
PID 5072 wrote to memory of 1156	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	sc.exe
PID 5072 wrote to memory of 4856	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	sc.exe
PID 5072 wrote to memory of 4856	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	sc.exe
PID 5072 wrote to memory of 4856	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	sc.exe
PID 5072 wrote to memory of 4284	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	sc.exe
PID 5072 wrote to memory of 4284	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	sc.exe
PID 5072 wrote to memory of 4284	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	sc.exe
PID 5072 wrote to memory of 3028	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	netsh.exe
PID 5072 wrote to memory of 3028	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	netsh.exe
PID 5072 wrote to memory of 3028	5072	2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe	netsh.exe
PID 1784 wrote to memory of 1732	1784	feuqxty.exe	svchost.exe
PID 1784 wrote to memory of 1732	1784	feuqxty.exe	svchost.exe
PID 1784 wrote to memory of 1732	1784	feuqxty.exe	svchost.exe
PID 1784 wrote to memory of 1732	1784	feuqxty.exe	svchost.exe
PID 1784 wrote to memory of 1732	1784	feuqxty.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe
"C:\Users\Admin\AppData\Local\Temp\2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5072

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rsxpzcjp\
2⤵
PID:444

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\feuqxty.exe" C:\Windows\SysWOW64\rsxpzcjp\
2⤵
PID:3156

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rsxpzcjp binPath= "C:\Windows\SysWOW64\rsxpzcjp\feuqxty.exe /d\"C:\Users\Admin\AppData\Local\Temp\2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1156

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rsxpzcjp "wifi internet conection"
2⤵
- Launches sc.exe
PID:4856

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rsxpzcjp
2⤵
- Launches sc.exe
PID:4284

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
PID:3028

C:\Windows\SysWOW64\rsxpzcjp\feuqxty.exe
C:\Windows\SysWOW64\rsxpzcjp\feuqxty.exe /d"C:\Users\Admin\AppData\Local\Temp\2e7a988c2135655f43ba2622d9e3cec0cd082352be9a829dee43772a4db5a7a5.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1784

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:1732

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\feuqxty.exe
Filesize
14.3MB

MD5
51d395284b6f9a347218b54cb4dab3ce

SHA1
2c4b3817b1451d271d79739f559ccd1e94e82bdf

SHA256
c95e6d9af3be67c8a4d4861267067dbd6b17fcc575115485f604b16d18b6f175

SHA512
47951e6e8dae99cd1f97a41f97f4f79ea0f1283d1bac7e3084ece11944f69f4f2f7c660aeb37f1490e8a47274812ae940e32ad728fe9199ecbb9a32bdfa31baa

Download Submit
C:\Windows\SysWOW64\rsxpzcjp\feuqxty.exe
Filesize
14.3MB

MD5
51d395284b6f9a347218b54cb4dab3ce

SHA1
2c4b3817b1451d271d79739f559ccd1e94e82bdf

SHA256
c95e6d9af3be67c8a4d4861267067dbd6b17fcc575115485f604b16d18b6f175

SHA512
47951e6e8dae99cd1f97a41f97f4f79ea0f1283d1bac7e3084ece11944f69f4f2f7c660aeb37f1490e8a47274812ae940e32ad728fe9199ecbb9a32bdfa31baa

Download Submit
memory/444-132-0x0000000000000000-mapping.dmp

Download
memory/1156-135-0x0000000000000000-mapping.dmp

Download
memory/1732-142-0x0000000000000000-mapping.dmp

Download
memory/1732-143-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/1732-147-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/1732-148-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/1784-141-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/1784-145-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3028-138-0x0000000000000000-mapping.dmp

Download
memory/3156-133-0x0000000000000000-mapping.dmp

Download
memory/4284-137-0x0000000000000000-mapping.dmp

Download
memory/4856-136-0x0000000000000000-mapping.dmp

Download
memory/5072-139-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/5072-131-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/5072-130-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads