tofsee | 101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7

General

Target

101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe
Size

137KB
MD5

d621a78cf6343c38fa7356b7a2846ddd
SHA1

8037750152302eeffddab9e0efe93967bbafd582
SHA256

101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7
SHA512

6c3144dc20bc6048456bb6330b93df1566d969971334259e393c15e38c1f282e24f982ea28400b53283a6b538d4a7fcbe6283cad0fe24b8f45cd26bdc4c70ef4

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:

ggmiwwcu.exe

pid process

456 ggmiwwcu.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1204 netsh.exe

pid	process
456	ggmiwwcu.exe

pid	process
1204	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\gvtrvedb\ImagePath = "C:\\Windows\\SysWOW64\\gvtrvedb\\ggmiwwcu.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1964 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ggmiwwcu.exe

description pid process target process

PID 456 set thread context of 1964 456 ggmiwwcu.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

1636 sc.exe
1296 sc.exe
588 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

pid	process
1964	svchost.exe

description	pid	process	target process
PID 456 set thread context of 1964	456	ggmiwwcu.exe	svchost.exe

pid	process
1636	sc.exe
1296	sc.exe
588	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exeggmiwwcu.exe

description	pid	process	target process
PID 1688 wrote to memory of 272	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 1688 wrote to memory of 272	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 1688 wrote to memory of 272	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 1688 wrote to memory of 272	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 1688 wrote to memory of 104	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 1688 wrote to memory of 104	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 1688 wrote to memory of 104	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 1688 wrote to memory of 104	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	cmd.exe
PID 1688 wrote to memory of 1636	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 1636	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 1636	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 1636	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 1296	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 1296	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 1296	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 1296	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 588	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 588	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 588	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 588	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	sc.exe
PID 1688 wrote to memory of 1204	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	netsh.exe
PID 1688 wrote to memory of 1204	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	netsh.exe
PID 1688 wrote to memory of 1204	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	netsh.exe
PID 1688 wrote to memory of 1204	1688	101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe	netsh.exe
PID 456 wrote to memory of 1964	456	ggmiwwcu.exe	svchost.exe
PID 456 wrote to memory of 1964	456	ggmiwwcu.exe	svchost.exe
PID 456 wrote to memory of 1964	456	ggmiwwcu.exe	svchost.exe
PID 456 wrote to memory of 1964	456	ggmiwwcu.exe	svchost.exe
PID 456 wrote to memory of 1964	456	ggmiwwcu.exe	svchost.exe
PID 456 wrote to memory of 1964	456	ggmiwwcu.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe
"C:\Users\Admin\AppData\Local\Temp\101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1688

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gvtrvedb\
2⤵
PID:272

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ggmiwwcu.exe" C:\Windows\SysWOW64\gvtrvedb\
2⤵
PID:104

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create gvtrvedb binPath= "C:\Windows\SysWOW64\gvtrvedb\ggmiwwcu.exe /d\"C:\Users\Admin\AppData\Local\Temp\101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:1636

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description gvtrvedb "wifi internet conection"
2⤵
- Launches sc.exe
PID:1296

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start gvtrvedb
2⤵
- Launches sc.exe
PID:588

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:1204

C:\Windows\SysWOW64\gvtrvedb\ggmiwwcu.exe
C:\Windows\SysWOW64\gvtrvedb\ggmiwwcu.exe /d"C:\Users\Admin\AppData\Local\Temp\101512df3ce4c79c8f763e779e8d0cf1bfe31089b7107eb384280c3f6adc40b7.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:456

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:1964

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

New Service

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

New Service

1

T1050

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ggmiwwcu.exe
Filesize
13.5MB

MD5
a6c72af2a647c26ec370b366dcc6c5a5

SHA1
f2938056f23209d4fd4755d9982fa619b9e815ab

SHA256
ad1878463b85ece6a53f57dec28965bcd7accd875d40c200e11513830a008a67

SHA512
1a6fbe53c18bfbef7094543aec57d9dd1be147224539c69906e3539653a53d628a47a2d73f7f96804b46c190516a5691dfc57c7b4c5e7da8c7236604712f6af8

Download Submit
C:\Windows\SysWOW64\gvtrvedb\ggmiwwcu.exe
Filesize
13.5MB

MD5
a6c72af2a647c26ec370b366dcc6c5a5

SHA1
f2938056f23209d4fd4755d9982fa619b9e815ab

SHA256
ad1878463b85ece6a53f57dec28965bcd7accd875d40c200e11513830a008a67

SHA512
1a6fbe53c18bfbef7094543aec57d9dd1be147224539c69906e3539653a53d628a47a2d73f7f96804b46c190516a5691dfc57c7b4c5e7da8c7236604712f6af8

Download Submit
memory/104-57-0x0000000000000000-mapping.dmp

Download
memory/272-56-0x0000000000000000-mapping.dmp

Download
memory/456-65-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/588-61-0x0000000000000000-mapping.dmp

Download
memory/1204-63-0x0000000000000000-mapping.dmp

Download
memory/1296-60-0x0000000000000000-mapping.dmp

Download
memory/1636-59-0x0000000000000000-mapping.dmp

Download
memory/1688-54-0x0000000000400000-0x0000000000425000-memory.dmp

Filesize
148KB

Download
memory/1688-55-0x00000000751C1000-0x00000000751C3000-memory.dmp

Filesize
8KB

Download
memory/1964-67-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1964-69-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1964-70-0x0000000000089A6B-mapping.dmp

Download
memory/1964-74-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/1964-75-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download

Analysis

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