tofsee | a4944054682d38caacc690fba9a286c0edb217c5d3e099d47d5e492d3807da9a

General

Target

51a0acc8c78452456894a85db18c31a9.exe
Size

10.3MB
MD5

51a0acc8c78452456894a85db18c31a9
SHA1

bfc6fb39ef21d6626fec260216178ebfb47f86fa
SHA256

a4944054682d38caacc690fba9a286c0edb217c5d3e099d47d5e492d3807da9a
SHA512

6efe90fe8badba612187109691771e3bb297e430a7a86305fa600092badc910ec93a0b89b5432d6b7b900033648dab2c838d8a05cf755cc9a86857b3301e54ad

Score

10^/10

tofsee evasion persistence trojan

Malware Config

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:

nryiiwgc.exe

pid process

1604 nryiiwgc.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031
Suspicious use of SetThreadContext 1 IoCs

Processes:

nryiiwgc.exe

description pid process target process

PID 1604 set thread context of 592 1604 nryiiwgc.exe svchost.exe
Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

pid	process
1604	nryiiwgc.exe

description	pid	process	target process
PID 1604 set thread context of 592	1604	nryiiwgc.exe	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

51a0acc8c78452456894a85db18c31a9.exenryiiwgc.exe

description	pid	process	target process
PID 984 wrote to memory of 2516	984	51a0acc8c78452456894a85db18c31a9.exe	cmd.exe
PID 984 wrote to memory of 2516	984	51a0acc8c78452456894a85db18c31a9.exe	cmd.exe
PID 984 wrote to memory of 2516	984	51a0acc8c78452456894a85db18c31a9.exe	cmd.exe
PID 984 wrote to memory of 3772	984	51a0acc8c78452456894a85db18c31a9.exe	cmd.exe
PID 984 wrote to memory of 3772	984	51a0acc8c78452456894a85db18c31a9.exe	cmd.exe
PID 984 wrote to memory of 3772	984	51a0acc8c78452456894a85db18c31a9.exe	cmd.exe
PID 984 wrote to memory of 3700	984	51a0acc8c78452456894a85db18c31a9.exe	sc.exe
PID 984 wrote to memory of 3700	984	51a0acc8c78452456894a85db18c31a9.exe	sc.exe
PID 984 wrote to memory of 3700	984	51a0acc8c78452456894a85db18c31a9.exe	sc.exe
PID 984 wrote to memory of 1896	984	51a0acc8c78452456894a85db18c31a9.exe	sc.exe
PID 984 wrote to memory of 1896	984	51a0acc8c78452456894a85db18c31a9.exe	sc.exe
PID 984 wrote to memory of 1896	984	51a0acc8c78452456894a85db18c31a9.exe	sc.exe
PID 984 wrote to memory of 732	984	51a0acc8c78452456894a85db18c31a9.exe	sc.exe
PID 984 wrote to memory of 732	984	51a0acc8c78452456894a85db18c31a9.exe	sc.exe
PID 984 wrote to memory of 732	984	51a0acc8c78452456894a85db18c31a9.exe	sc.exe
PID 1604 wrote to memory of 592	1604	nryiiwgc.exe	svchost.exe
PID 1604 wrote to memory of 592	1604	nryiiwgc.exe	svchost.exe
PID 1604 wrote to memory of 592	1604	nryiiwgc.exe	svchost.exe
PID 1604 wrote to memory of 592	1604	nryiiwgc.exe	svchost.exe
PID 1604 wrote to memory of 592	1604	nryiiwgc.exe	svchost.exe
PID 984 wrote to memory of 2972	984	51a0acc8c78452456894a85db18c31a9.exe	netsh.exe
PID 984 wrote to memory of 2972	984	51a0acc8c78452456894a85db18c31a9.exe	netsh.exe
PID 984 wrote to memory of 2972	984	51a0acc8c78452456894a85db18c31a9.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\51a0acc8c78452456894a85db18c31a9.exe
"C:\Users\Admin\AppData\Local\Temp\51a0acc8c78452456894a85db18c31a9.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:984

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jshfqefy\
2⤵
PID:2516

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nryiiwgc.exe" C:\Windows\SysWOW64\jshfqefy\
2⤵
PID:3772

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create jshfqefy binPath= "C:\Windows\SysWOW64\jshfqefy\nryiiwgc.exe /d\"C:\Users\Admin\AppData\Local\Temp\51a0acc8c78452456894a85db18c31a9.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
PID:3700

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description jshfqefy "wifi internet conection"
2⤵
PID:1896

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start jshfqefy
2⤵
PID:732

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⤵
PID:2972

C:\Windows\SysWOW64\jshfqefy\nryiiwgc.exe
C:\Windows\SysWOW64\jshfqefy\nryiiwgc.exe /d"C:\Users\Admin\AppData\Local\Temp\51a0acc8c78452456894a85db18c31a9.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1604

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
PID:592

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

New Service

1

T1050

Modify Existing Service

1

T1031

Privilege Escalation

New Service

1

T1050

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nryiiwgc.exe
MD5
3b6c627614f0bdd84055498fce5d32f3

SHA1
f0ac453e9990e7cd9aa78d151a577cf67b9398a8

SHA256
a74c0d176834fdc5e7c8fdcccc097fb910f81f475ce5e7fcba44c915d8376599

SHA512
6e4a64b558ff7fb3e11db666f5071f5df08902c07013dd9a24ecc4bc2ea5a1239a5cbf69ef75557fb36d0c651b51572a4d5de7856d1ffe6d9d7dc4354533a519

Download Submit
C:\Windows\SysWOW64\jshfqefy\nryiiwgc.exe
MD5
3b6c627614f0bdd84055498fce5d32f3

SHA1
f0ac453e9990e7cd9aa78d151a577cf67b9398a8

SHA256
a74c0d176834fdc5e7c8fdcccc097fb910f81f475ce5e7fcba44c915d8376599

SHA512
6e4a64b558ff7fb3e11db666f5071f5df08902c07013dd9a24ecc4bc2ea5a1239a5cbf69ef75557fb36d0c651b51572a4d5de7856d1ffe6d9d7dc4354533a519

Download Submit
memory/592-9-0x0000000000490000-0x00000000004A5000-memory.dmp

Filesize
84KB

Download
memory/592-10-0x0000000000499A6B-mapping.dmp

Download
memory/732-7-0x0000000000000000-mapping.dmp

Download
memory/1896-6-0x0000000000000000-mapping.dmp

Download
memory/2516-2-0x0000000000000000-mapping.dmp

Download
memory/2972-11-0x0000000000000000-mapping.dmp

Download
memory/3700-5-0x0000000000000000-mapping.dmp

Download
memory/3772-3-0x0000000000000000-mapping.dmp

Download

Analysis

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