tofsee | b30d031ba00884201f134275fba470347847c79c202730a99aba28ba0af5164d

General

Target

Backdoor.Win32.Tofsee.exe
Size

156KB
MD5

5a1b9badb9af104e121379fe3c7f7e4c
SHA1

0d4e9cc2af85424606ddb981c3060f19f7aa834b
SHA256

b30d031ba00884201f134275fba470347847c79c202730a99aba28ba0af5164d
SHA512

049b178dd0a9697e94cba8895dc7ab28f4a754140f777781fdc2213348874f47234e8d5addf332c52396a20ead98ad1e147855a9b0abc4c2d18e6cc239d0454a
SSDEEP

3072:jcyXKgAPWYnaqlhdlEMOMk3M1HhyOGxx:jcQKgAvaudyMOv2yO

Score

10^/10

tofsee persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.225.38.217

111.121.193.242

188.190.120.101

188.165.132.183

213.155.0.208

rgtryhbgddtyh.biz

wertdghbyrukl.ch

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

908 cmd.exe
Executes dropped EXE 2 IoCs

Processes:

jonqhmea.exejonqhmea.exe

pid process

320 jonqhmea.exe
436 jonqhmea.exe
Loads dropped DLL 2 IoCs

Processes:

Backdoor.Win32.Tofsee.exe

pid process

1728 Backdoor.Win32.Tofsee.exe
1728 Backdoor.Win32.Tofsee.exe

pid	process
908	cmd.exe

pid	process
320	jonqhmea.exe
436	jonqhmea.exe

pid	process
1728	Backdoor.Win32.Tofsee.exe
1728	Backdoor.Win32.Tofsee.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

Backdoor.Win32.Tofsee.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\jonqhmea.exe\""	Backdoor.Win32.Tofsee.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Backdoor.Win32.Tofsee.exejonqhmea.exejonqhmea.exe

description	pid	process	target process
PID 2008 set thread context of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 320 set thread context of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 set thread context of 436	320	jonqhmea.exe	jonqhmea.exe
PID 436 set thread context of 1112	436	jonqhmea.exe	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery
T1018

Processes:

PING.EXEPING.EXEPING.EXE

pid process

1336 PING.EXE
940 PING.EXE
1064 PING.EXE
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

Backdoor.Win32.Tofsee.exejonqhmea.exe

pid process

2008 Backdoor.Win32.Tofsee.exe
320 jonqhmea.exe

pid	process
1336	PING.EXE
940	PING.EXE
1064	PING.EXE

pid	process
2008	Backdoor.Win32.Tofsee.exe
320	jonqhmea.exe

Suspicious use of WriteProcessMemory 48 IoCs

Processes:

Backdoor.Win32.Tofsee.exeBackdoor.Win32.Tofsee.exejonqhmea.exejonqhmea.execmd.exe

description	pid	process	target process
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 2008 wrote to memory of 1728	2008	Backdoor.Win32.Tofsee.exe	Backdoor.Win32.Tofsee.exe
PID 1728 wrote to memory of 320	1728	Backdoor.Win32.Tofsee.exe	jonqhmea.exe
PID 1728 wrote to memory of 320	1728	Backdoor.Win32.Tofsee.exe	jonqhmea.exe
PID 1728 wrote to memory of 320	1728	Backdoor.Win32.Tofsee.exe	jonqhmea.exe
PID 1728 wrote to memory of 320	1728	Backdoor.Win32.Tofsee.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 320 wrote to memory of 436	320	jonqhmea.exe	jonqhmea.exe
PID 436 wrote to memory of 1112	436	jonqhmea.exe	svchost.exe
PID 436 wrote to memory of 1112	436	jonqhmea.exe	svchost.exe
PID 436 wrote to memory of 1112	436	jonqhmea.exe	svchost.exe
PID 436 wrote to memory of 1112	436	jonqhmea.exe	svchost.exe
PID 436 wrote to memory of 1112	436	jonqhmea.exe	svchost.exe
PID 436 wrote to memory of 1112	436	jonqhmea.exe	svchost.exe
PID 1728 wrote to memory of 908	1728	Backdoor.Win32.Tofsee.exe	cmd.exe
PID 1728 wrote to memory of 908	1728	Backdoor.Win32.Tofsee.exe	cmd.exe
PID 1728 wrote to memory of 908	1728	Backdoor.Win32.Tofsee.exe	cmd.exe
PID 1728 wrote to memory of 908	1728	Backdoor.Win32.Tofsee.exe	cmd.exe
PID 908 wrote to memory of 1336	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 1336	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 1336	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 1336	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 940	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 940	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 940	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 940	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 1064	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 1064	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 1064	908	cmd.exe	PING.EXE
PID 908 wrote to memory of 1064	908	cmd.exe	PING.EXE

C:\Users\Admin\AppData\Local\Temp\Backdoor.Win32.Tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\Backdoor.Win32.Tofsee.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2008

C:\Users\Admin\AppData\Local\Temp\Backdoor.Win32.Tofsee.exe
"C:\Users\Admin\AppData\Local\Temp\Backdoor.Win32.Tofsee.exe"
2⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1728

C:\Users\Admin\jonqhmea.exe
"C:\Users\Admin\jonqhmea.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:320

C:\Users\Admin\jonqhmea.exe
"C:\Users\Admin\jonqhmea.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:436

C:\Windows\SysWOW64\svchost.exe
svchost.exe
5⤵
PID:1112

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\3852.bat" "
3⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:908

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1
4⤵
- Runs ping.exe
PID:1336

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1
4⤵
- Runs ping.exe
PID:940

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1
4⤵
- Runs ping.exe
PID:1064

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Remote System Discovery

1

T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\3852.bat
Filesize
216B

MD5
09df633913a0e95a0b74bcb990a9598a

SHA1
4feb02b98298b7ed9eabb55cc00b76dd5bd9ad85

SHA256
df2b4923e7429d4681082218e29f0b5af94ac6fa247dec5f9cb8f3bb708b967f

SHA512
14a57df6f0e95bee58c3b4c56cfea00c2e0c8e27365eff99d5feae28e02c1d49f0c11f7cc45d3ad744d163868bd76e2ef882a336b43ce68ddfdbecfb96b9fe71

Download Submit
C:\Users\Admin\AppData\Local\Temp\3852.bat
Filesize
216B

MD5
09df633913a0e95a0b74bcb990a9598a

SHA1
4feb02b98298b7ed9eabb55cc00b76dd5bd9ad85

SHA256
df2b4923e7429d4681082218e29f0b5af94ac6fa247dec5f9cb8f3bb708b967f

SHA512
14a57df6f0e95bee58c3b4c56cfea00c2e0c8e27365eff99d5feae28e02c1d49f0c11f7cc45d3ad744d163868bd76e2ef882a336b43ce68ddfdbecfb96b9fe71

Download Submit
C:\Users\Admin\jonqhmea.exe
Filesize
42.4MB

MD5
359e433cd99475cc732cdac36c29e112

SHA1
b3f903413b0fdd37b9b9067a09e2979ba53024a4

SHA256
1f24846e55ac095876a03fa612a690ca8c7b9849694abb708a84627816e97c58

SHA512
4463dd78201b7b7329792503307403daa0ad575a1f797bfe59b368cbe9cad649cd07d653f7ba3edc867675f64aa61c82fbb759c3f8a451c760e5462376b68eba

Download Submit
C:\Users\Admin\jonqhmea.exe
Filesize
42.4MB

MD5
359e433cd99475cc732cdac36c29e112

SHA1
b3f903413b0fdd37b9b9067a09e2979ba53024a4

SHA256
1f24846e55ac095876a03fa612a690ca8c7b9849694abb708a84627816e97c58

SHA512
4463dd78201b7b7329792503307403daa0ad575a1f797bfe59b368cbe9cad649cd07d653f7ba3edc867675f64aa61c82fbb759c3f8a451c760e5462376b68eba

Download Submit
C:\Users\Admin\jonqhmea.exe
Filesize
42.4MB

MD5
359e433cd99475cc732cdac36c29e112

SHA1
b3f903413b0fdd37b9b9067a09e2979ba53024a4

SHA256
1f24846e55ac095876a03fa612a690ca8c7b9849694abb708a84627816e97c58

SHA512
4463dd78201b7b7329792503307403daa0ad575a1f797bfe59b368cbe9cad649cd07d653f7ba3edc867675f64aa61c82fbb759c3f8a451c760e5462376b68eba

Download Submit
C:\Users\Admin\jonqhmea.exe
Filesize
42.4MB

MD5
359e433cd99475cc732cdac36c29e112

SHA1
b3f903413b0fdd37b9b9067a09e2979ba53024a4

SHA256
1f24846e55ac095876a03fa612a690ca8c7b9849694abb708a84627816e97c58

SHA512
4463dd78201b7b7329792503307403daa0ad575a1f797bfe59b368cbe9cad649cd07d653f7ba3edc867675f64aa61c82fbb759c3f8a451c760e5462376b68eba

Download Submit
\Users\Admin\jonqhmea.exe
Filesize
42.4MB

MD5
359e433cd99475cc732cdac36c29e112

SHA1
b3f903413b0fdd37b9b9067a09e2979ba53024a4

SHA256
1f24846e55ac095876a03fa612a690ca8c7b9849694abb708a84627816e97c58

SHA512
4463dd78201b7b7329792503307403daa0ad575a1f797bfe59b368cbe9cad649cd07d653f7ba3edc867675f64aa61c82fbb759c3f8a451c760e5462376b68eba

Download Submit
\Users\Admin\jonqhmea.exe
Filesize
42.4MB

MD5
359e433cd99475cc732cdac36c29e112

SHA1
b3f903413b0fdd37b9b9067a09e2979ba53024a4

SHA256
1f24846e55ac095876a03fa612a690ca8c7b9849694abb708a84627816e97c58

SHA512
4463dd78201b7b7329792503307403daa0ad575a1f797bfe59b368cbe9cad649cd07d653f7ba3edc867675f64aa61c82fbb759c3f8a451c760e5462376b68eba

Download Submit
memory/436-89-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/436-85-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1112-87-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1112-88-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1112-86-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1112-93-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1112-94-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1112-98-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1112-99-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1112-100-0x0000000000190000-0x0000000000191000-memory.dmp

Filesize
4KB

Download
memory/1112-113-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1728-56-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1728-74-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1728-62-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads