tofsee | 2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488

General

Target

2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe
Size

142KB
MD5

c20d3f9c5dcd93a3dfd3b6e9aeea2541
SHA1

c829d1ab536df96bcc67f136c8453b51e8407934
SHA256

2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488
SHA512

4dec42790939d1d486de2c43e802583c60ff984f1c7ed4c40b744635f3a0ec2c8c9c49c3bb6f2d1942cab0da21f61a62a62aaa07381cbc841ef5a49adf3195d9

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:

tqbnhim.exe

pid process

4224 tqbnhim.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

64 netsh.exe

pid	process
4224	tqbnhim.exe

pid	process
64	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\vjhqwqjs\ImagePath = "C:\\Windows\\SysWOW64\\vjhqwqjs\\tqbnhim.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:

2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

tqbnhim.exe

description pid process target process

PID 4224 set thread context of 4280 4224 tqbnhim.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

2052 sc.exe
3076 sc.exe
520 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 4224 set thread context of 4280	4224	tqbnhim.exe	svchost.exe

pid	process
2052	sc.exe
3076	sc.exe
520	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exetqbnhim.exe

description	pid	process	target process
PID 4828 wrote to memory of 4236	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	cmd.exe
PID 4828 wrote to memory of 4236	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	cmd.exe
PID 4828 wrote to memory of 4236	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	cmd.exe
PID 4828 wrote to memory of 2444	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	cmd.exe
PID 4828 wrote to memory of 2444	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	cmd.exe
PID 4828 wrote to memory of 2444	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	cmd.exe
PID 4828 wrote to memory of 3076	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	sc.exe
PID 4828 wrote to memory of 3076	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	sc.exe
PID 4828 wrote to memory of 3076	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	sc.exe
PID 4828 wrote to memory of 520	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	sc.exe
PID 4828 wrote to memory of 520	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	sc.exe
PID 4828 wrote to memory of 520	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	sc.exe
PID 4828 wrote to memory of 2052	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	sc.exe
PID 4828 wrote to memory of 2052	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	sc.exe
PID 4828 wrote to memory of 2052	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	sc.exe
PID 4828 wrote to memory of 64	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	netsh.exe
PID 4828 wrote to memory of 64	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	netsh.exe
PID 4828 wrote to memory of 64	4828	2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe	netsh.exe
PID 4224 wrote to memory of 4280	4224	tqbnhim.exe	svchost.exe
PID 4224 wrote to memory of 4280	4224	tqbnhim.exe	svchost.exe
PID 4224 wrote to memory of 4280	4224	tqbnhim.exe	svchost.exe
PID 4224 wrote to memory of 4280	4224	tqbnhim.exe	svchost.exe
PID 4224 wrote to memory of 4280	4224	tqbnhim.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe
"C:\Users\Admin\AppData\Local\Temp\2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4828

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\vjhqwqjs\
2⤵
PID:4236

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tqbnhim.exe" C:\Windows\SysWOW64\vjhqwqjs\
2⤵
PID:2444

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create vjhqwqjs binPath= "C:\Windows\SysWOW64\vjhqwqjs\tqbnhim.exe /d\"C:\Users\Admin\AppData\Local\Temp\2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3076

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description vjhqwqjs "wifi internet conection"
2⤵
- Launches sc.exe
PID:520

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start vjhqwqjs
2⤵
- Launches sc.exe
PID:2052

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:64

C:\Windows\SysWOW64\vjhqwqjs\tqbnhim.exe
C:\Windows\SysWOW64\vjhqwqjs\tqbnhim.exe /d"C:\Users\Admin\AppData\Local\Temp\2391d4e6b02d6ba9ce47ca34a88260c83c2f72a0886932be5a63c117a31c9488.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4224

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:4280

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\tqbnhim.exe
Filesize
13.7MB

MD5
ffb8483bf9c30c14f59d0cda56c412f0

SHA1
e479e4683db0094f6c1fa7d6e1f809b2a3ebb055

SHA256
3d903716e31c55c4524e7f9c087799e3f235c3afdd6e9873168b0babbb24290f

SHA512
6fe79258e77256b3661db933c9f357103610f13bcb2d0073f9480c374ded1380fc49ad9f3d1d48de8723a8cb3637878d4c529477197e2654772f1160fe7c1ca6

Download Submit
C:\Windows\SysWOW64\vjhqwqjs\tqbnhim.exe
Filesize
13.7MB

MD5
ffb8483bf9c30c14f59d0cda56c412f0

SHA1
e479e4683db0094f6c1fa7d6e1f809b2a3ebb055

SHA256
3d903716e31c55c4524e7f9c087799e3f235c3afdd6e9873168b0babbb24290f

SHA512
6fe79258e77256b3661db933c9f357103610f13bcb2d0073f9480c374ded1380fc49ad9f3d1d48de8723a8cb3637878d4c529477197e2654772f1160fe7c1ca6

Download Submit
memory/64-137-0x0000000000000000-mapping.dmp

Download
memory/520-135-0x0000000000000000-mapping.dmp

Download
memory/2052-136-0x0000000000000000-mapping.dmp

Download
memory/2444-132-0x0000000000000000-mapping.dmp

Download
memory/3076-134-0x0000000000000000-mapping.dmp

Download
memory/4224-139-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/4236-131-0x0000000000000000-mapping.dmp

Download
memory/4280-140-0x0000000000000000-mapping.dmp

Download
memory/4280-141-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/4280-144-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/4280-145-0x0000000001200000-0x0000000001215000-memory.dmp

Filesize
84KB

Download
memory/4828-130-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads