tofsee | 5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959

General

Target

5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe
Size

153KB
MD5

c8f91e493d1e36838e613915dea38aef
SHA1

b4b6ae99c4ba7bfefbfab627c41702a458cbefc1
SHA256

5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959
SHA512

62d2b5b49721969479efade45d43da049e3c1cadef12b7ef0b996a5e35bca5ac4acb27fefb77e0e4494aefead3fb363934d7116def0298a9e4106c1cb4c99830

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:

zuubxjzr.exe

pid process

4132 zuubxjzr.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

4156 netsh.exe

pid	process
4132	zuubxjzr.exe

pid	process
4156	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\lrqoafc\ImagePath = "C:\\Windows\\SysWOW64\\lrqoafc\\zuubxjzr.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:

5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

zuubxjzr.exe

description pid process target process

PID 4132 set thread context of 5040 4132 zuubxjzr.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

2968 sc.exe
3496 sc.exe
4160 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 4132 set thread context of 5040	4132	zuubxjzr.exe	svchost.exe

pid	process
2968	sc.exe
3496	sc.exe
4160	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exezuubxjzr.exe

description	pid	process	target process
PID 3860 wrote to memory of 4740	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	cmd.exe
PID 3860 wrote to memory of 4740	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	cmd.exe
PID 3860 wrote to memory of 4740	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	cmd.exe
PID 3860 wrote to memory of 3896	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	cmd.exe
PID 3860 wrote to memory of 3896	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	cmd.exe
PID 3860 wrote to memory of 3896	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	cmd.exe
PID 3860 wrote to memory of 3496	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	sc.exe
PID 3860 wrote to memory of 3496	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	sc.exe
PID 3860 wrote to memory of 3496	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	sc.exe
PID 3860 wrote to memory of 4160	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	sc.exe
PID 3860 wrote to memory of 4160	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	sc.exe
PID 3860 wrote to memory of 4160	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	sc.exe
PID 3860 wrote to memory of 2968	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	sc.exe
PID 3860 wrote to memory of 2968	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	sc.exe
PID 3860 wrote to memory of 2968	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	sc.exe
PID 4132 wrote to memory of 5040	4132	zuubxjzr.exe	svchost.exe
PID 4132 wrote to memory of 5040	4132	zuubxjzr.exe	svchost.exe
PID 4132 wrote to memory of 5040	4132	zuubxjzr.exe	svchost.exe
PID 4132 wrote to memory of 5040	4132	zuubxjzr.exe	svchost.exe
PID 4132 wrote to memory of 5040	4132	zuubxjzr.exe	svchost.exe
PID 3860 wrote to memory of 4156	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	netsh.exe
PID 3860 wrote to memory of 4156	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	netsh.exe
PID 3860 wrote to memory of 4156	3860	5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe
"C:\Users\Admin\AppData\Local\Temp\5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3860

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lrqoafc\
2⤵
PID:4740

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\zuubxjzr.exe" C:\Windows\SysWOW64\lrqoafc\
2⤵
PID:3896

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create lrqoafc binPath= "C:\Windows\SysWOW64\lrqoafc\zuubxjzr.exe /d\"C:\Users\Admin\AppData\Local\Temp\5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:3496

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description lrqoafc "wifi internet conection"
2⤵
- Launches sc.exe
PID:4160

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start lrqoafc
2⤵
- Launches sc.exe
PID:2968

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:4156

C:\Windows\SysWOW64\lrqoafc\zuubxjzr.exe
C:\Windows\SysWOW64\lrqoafc\zuubxjzr.exe /d"C:\Users\Admin\AppData\Local\Temp\5c3b9c929cac14277c3f810b57a487a6093470e3b4fd56ac65ab2d3f6b4e9959.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4132

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
PID:5040

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\zuubxjzr.exe
Filesize
12.8MB

MD5
13ce4cad3dbcda0d68c7075c57e44be3

SHA1
10ce85bd3bad5988abd4d17712c4b4b428d51767

SHA256
9fac100a2c63be0f436133381c61d95a0b893b3482527f6c199de5c13b11b980

SHA512
1c79d326929cac0f4b638b0f5f8701c1314607d47424c011891036b9c598f925abd9705275b0ec4dec4a974dcfa60b82f4ee80d56566ae753ee7e26d8d57bb2b

Download Submit
C:\Windows\SysWOW64\lrqoafc\zuubxjzr.exe
Filesize
12.8MB

MD5
13ce4cad3dbcda0d68c7075c57e44be3

SHA1
10ce85bd3bad5988abd4d17712c4b4b428d51767

SHA256
9fac100a2c63be0f436133381c61d95a0b893b3482527f6c199de5c13b11b980

SHA512
1c79d326929cac0f4b638b0f5f8701c1314607d47424c011891036b9c598f925abd9705275b0ec4dec4a974dcfa60b82f4ee80d56566ae753ee7e26d8d57bb2b

Download Submit
memory/2968-136-0x0000000000000000-mapping.dmp

Download
memory/3496-134-0x0000000000000000-mapping.dmp

Download
memory/3860-130-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/3896-132-0x0000000000000000-mapping.dmp

Download
memory/4132-138-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/4156-141-0x0000000000000000-mapping.dmp

Download
memory/4160-135-0x0000000000000000-mapping.dmp

Download
memory/4740-131-0x0000000000000000-mapping.dmp

Download
memory/5040-139-0x0000000000000000-mapping.dmp

Download
memory/5040-140-0x0000000000960000-0x0000000000975000-memory.dmp

Filesize
84KB

Download
memory/5040-144-0x0000000000960000-0x0000000000975000-memory.dmp

Filesize
84KB

Download
memory/5040-145-0x0000000000960000-0x0000000000975000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads