tofsee | 28485c139a6355cb8429d01defe5cb89e8c0c8bfc1ad5f5520341812478000b1

General

Target

78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe
Size

154KB
MD5

5e867ae4a78726523d91eaea386fce6d
SHA1

c9ee64774b15ada9cbd52f88bb47057647978fac
SHA256

78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d
SHA512

74d7fbb706839e32432abb761dbb02dd0e3d85e8f2f22412549d379f42027a99c4af39febb448b150e6d701d25fab4be698eb9439bcb5a247659dbf888bbb344
SSDEEP

1536:n9Hnxm+W0eDrB6CjnMQSoWp0MYS3+MpHiCUywyJqbgoVtcdnA+QA5Hs5W0+MWVO4:npQDBDjnLSZp3+6iCUyw6oVtrA5He1

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\rzaouvme = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

960 netsh.exe

pid	process
960	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\rzaouvme\ImagePath = "C:\\Windows\\SysWOW64\\rzaouvme\\utduombn.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1764 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

utduombn.exe

pid process

1960 utduombn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

utduombn.exe

description pid process target process

PID 1960 set thread context of 1764 1960 utduombn.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

972 sc.exe
684 sc.exe
1672 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1764	svchost.exe

pid	process
1960	utduombn.exe

description	pid	process	target process
PID 1960 set thread context of 1764	1960	utduombn.exe	svchost.exe

pid	process
972	sc.exe
684	sc.exe
1672	sc.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

AUDIODG.EXEAUDIODG.EXE

description	pid	process
Token: 33	872	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	872	AUDIODG.EXE
Token: 33	872	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	872	AUDIODG.EXE
Token: 33	1220	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1220	AUDIODG.EXE
Token: 33	1220	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1220	AUDIODG.EXE

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exeutduombn.exe

description	pid	process	target process
PID 1972 wrote to memory of 1932	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	cmd.exe
PID 1972 wrote to memory of 1932	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	cmd.exe
PID 1972 wrote to memory of 1932	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	cmd.exe
PID 1972 wrote to memory of 1932	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	cmd.exe
PID 1972 wrote to memory of 696	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	cmd.exe
PID 1972 wrote to memory of 696	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	cmd.exe
PID 1972 wrote to memory of 696	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	cmd.exe
PID 1972 wrote to memory of 696	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	cmd.exe
PID 1972 wrote to memory of 972	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 972	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 972	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 972	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 684	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 684	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 684	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 684	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 1672	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 1672	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 1672	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 1672	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	sc.exe
PID 1972 wrote to memory of 960	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	netsh.exe
PID 1972 wrote to memory of 960	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	netsh.exe
PID 1972 wrote to memory of 960	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	netsh.exe
PID 1972 wrote to memory of 960	1972	78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe	netsh.exe
PID 1960 wrote to memory of 1764	1960	utduombn.exe	svchost.exe
PID 1960 wrote to memory of 1764	1960	utduombn.exe	svchost.exe
PID 1960 wrote to memory of 1764	1960	utduombn.exe	svchost.exe
PID 1960 wrote to memory of 1764	1960	utduombn.exe	svchost.exe
PID 1960 wrote to memory of 1764	1960	utduombn.exe	svchost.exe
PID 1960 wrote to memory of 1764	1960	utduombn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe
"C:\Users\Admin\AppData\Local\Temp\78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1972

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rzaouvme\
2⤵
PID:1932

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\utduombn.exe" C:\Windows\SysWOW64\rzaouvme\
2⤵
PID:696

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create rzaouvme binPath= "C:\Windows\SysWOW64\rzaouvme\utduombn.exe /d\"C:\Users\Admin\AppData\Local\Temp\78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:972

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description rzaouvme "wifi internet conection"
2⤵
- Launches sc.exe
PID:684

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start rzaouvme
2⤵
- Launches sc.exe
PID:1672

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:960

C:\Windows\SysWOW64\rzaouvme\utduombn.exe
C:\Windows\SysWOW64\rzaouvme\utduombn.exe /d"C:\Users\Admin\AppData\Local\Temp\78ca5753c7f93fe3ff553ae23fb87395c36a791b61952eabf6b9d96e59c7862d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1960

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1764

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:1812

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0xc4
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:872

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x56c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1220

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

Disabling Security Tools

1

T1089

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\utduombn.exe
Filesize
12.1MB

MD5
7532276222201e5cb12df7562cf062aa

SHA1
fda6d186cc9e508c007aa6f935f2944fc3af4c34

SHA256
96a1acae602bd3e1a1a114035f7dcc788b9bbf5e2f87b9d8bc5bc65c8f9dcb29

SHA512
d28a972a91dba87644a675d5f4b88cb1a197b1be0138103a00147fe9825640895592ce0ce2c48ca78a3e4e53aa968f6b084347e49d7dfa9b79fe29ee26fcc6d8

Download Submit
C:\Windows\SysWOW64\rzaouvme\utduombn.exe
Filesize
12.1MB

MD5
7532276222201e5cb12df7562cf062aa

SHA1
fda6d186cc9e508c007aa6f935f2944fc3af4c34

SHA256
96a1acae602bd3e1a1a114035f7dcc788b9bbf5e2f87b9d8bc5bc65c8f9dcb29

SHA512
d28a972a91dba87644a675d5f4b88cb1a197b1be0138103a00147fe9825640895592ce0ce2c48ca78a3e4e53aa968f6b084347e49d7dfa9b79fe29ee26fcc6d8

Download Submit
memory/1764-64-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1764-63-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1764-73-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1764-72-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1764-71-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1764-70-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1764-65-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1960-68-0x00000000050E0000-0x00000000050F1000-memory.dmp

Filesize
68KB

Download
memory/1960-66-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1960-60-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1972-54-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1972-57-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1972-61-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1972-62-0x00000000050E0000-0x00000000050F1000-memory.dmp

Filesize
68KB

Download
memory/1972-56-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads