tofsee | 2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042

General

Target

2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe
Size

142KB
MD5

8ae987e80e12b61362f37b47ea603a71
SHA1

29a2d26bf4d8a74d4ded2bba39af14e2af83016e
SHA256

2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042
SHA512

d47df314643d82af87feb43f79ae5fef1ad61aa449755d0d73abee307bdc93fbcb53529c7fe8039e7bfb051d8041b084b3efd00d868377881b6c46b86c0f6ef7

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\swezdrxk = "0"	svchost.exe

Creates new service(s) 1 TTPs
persistence

New Service
T1050
Executes dropped EXE 1 IoCs

Processes:

nimorazl.exe

pid process

1740 nimorazl.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1724 netsh.exe

pid	process
1740	nimorazl.exe

pid	process
1724	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\swezdrxk\ImagePath = "C:\\Windows\\SysWOW64\\swezdrxk\\nimorazl.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1560 svchost.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

nimorazl.exe

description pid process target process

PID 1740 set thread context of 1560 1740 nimorazl.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

1744 sc.exe
992 sc.exe
1048 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
1560	svchost.exe

description	pid	process	target process
PID 1740 set thread context of 1560	1740	nimorazl.exe	svchost.exe

pid	process
1744	sc.exe
992	sc.exe
1048	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exenimorazl.exe

description	pid	process	target process
PID 860 wrote to memory of 564	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	cmd.exe
PID 860 wrote to memory of 564	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	cmd.exe
PID 860 wrote to memory of 564	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	cmd.exe
PID 860 wrote to memory of 564	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	cmd.exe
PID 860 wrote to memory of 1928	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	cmd.exe
PID 860 wrote to memory of 1928	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	cmd.exe
PID 860 wrote to memory of 1928	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	cmd.exe
PID 860 wrote to memory of 1928	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	cmd.exe
PID 860 wrote to memory of 992	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 992	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 992	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 992	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 1048	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 1048	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 1048	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 1048	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 1744	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 1744	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 1744	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 1744	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	sc.exe
PID 860 wrote to memory of 1724	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	netsh.exe
PID 860 wrote to memory of 1724	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	netsh.exe
PID 860 wrote to memory of 1724	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	netsh.exe
PID 860 wrote to memory of 1724	860	2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe	netsh.exe
PID 1740 wrote to memory of 1560	1740	nimorazl.exe	svchost.exe
PID 1740 wrote to memory of 1560	1740	nimorazl.exe	svchost.exe
PID 1740 wrote to memory of 1560	1740	nimorazl.exe	svchost.exe
PID 1740 wrote to memory of 1560	1740	nimorazl.exe	svchost.exe
PID 1740 wrote to memory of 1560	1740	nimorazl.exe	svchost.exe
PID 1740 wrote to memory of 1560	1740	nimorazl.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe
"C:\Users\Admin\AppData\Local\Temp\2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:860

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\swezdrxk\
2⤵
PID:564

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nimorazl.exe" C:\Windows\SysWOW64\swezdrxk\
2⤵
PID:1928

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create swezdrxk binPath= "C:\Windows\SysWOW64\swezdrxk\nimorazl.exe /d\"C:\Users\Admin\AppData\Local\Temp\2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:992

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description swezdrxk "wifi internet conection"
2⤵
- Launches sc.exe
PID:1048

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start swezdrxk
2⤵
- Launches sc.exe
PID:1744

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:1724

C:\Windows\SysWOW64\swezdrxk\nimorazl.exe
C:\Windows\SysWOW64\swezdrxk\nimorazl.exe /d"C:\Users\Admin\AppData\Local\Temp\2892fcb514031795be8f62a7c309a5fe80279066517fd8bd219f2e0f31fb4042.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1740

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:1560

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\nimorazl.exe
Filesize
10.7MB

MD5
68ab7bd9f499b3608a8910f371eaa28f

SHA1
2e8e26cc5d83d6d7d38fc41072082fa3397409a1

SHA256
7c1adc552811dc07ba7178e0b86bb7bc6a16597ad85bdbb4d9cb35d42af024c5

SHA512
c14971c0bb734febecc9225b2676a93753079664a6338416ca510623978acfaae010e24c57eb1bbba953270443abd9b634f557aa69bccc07081ab1d052783d17

Download Submit
C:\Windows\SysWOW64\swezdrxk\nimorazl.exe
Filesize
10.7MB

MD5
68ab7bd9f499b3608a8910f371eaa28f

SHA1
2e8e26cc5d83d6d7d38fc41072082fa3397409a1

SHA256
7c1adc552811dc07ba7178e0b86bb7bc6a16597ad85bdbb4d9cb35d42af024c5

SHA512
c14971c0bb734febecc9225b2676a93753079664a6338416ca510623978acfaae010e24c57eb1bbba953270443abd9b634f557aa69bccc07081ab1d052783d17

Download Submit
memory/564-56-0x0000000000000000-mapping.dmp

Download
memory/860-55-0x00000000763C1000-0x00000000763C3000-memory.dmp

Filesize
8KB

Download
memory/860-54-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/992-59-0x0000000000000000-mapping.dmp

Download
memory/1048-60-0x0000000000000000-mapping.dmp

Download
memory/1560-70-0x00000000000C9A6B-mapping.dmp

Download
memory/1560-75-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1560-74-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1560-73-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1560-67-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1560-69-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/1724-63-0x0000000000000000-mapping.dmp

Download
memory/1740-65-0x0000000000400000-0x0000000000426000-memory.dmp

Filesize
152KB

Download
memory/1744-61-0x0000000000000000-mapping.dmp

Download
memory/1928-57-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads