tofsee | 5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5

General

Target

5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe
Size

160KB
MD5

0c4d08e0b8da928708643b270420852d
SHA1

fcc3d633223a431ccc725c89403730ef506b49d7
SHA256

5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5
SHA512

baf7d0ab12f2f0133b24daf6b3cc046c2cc4963de5926e611cd4138d2c49df860e339d39d99a4c17435f00ddcc640a87295a5fbfb688fef044f1d7a0b5b97605

Score

10^/10

tofsee persistence trojan

Malware Config

Extracted

Family

tofsee

C2

103.232.222.57

111.121.193.242

123.249.0.22

Signatures

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

Processes:

afehymqr.exe

pid process

2672 afehymqr.exe

pid	process
2672	afehymqr.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\Control Panel\International\Geo\Nation	5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3463845317-933582289-45817732-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\afehymqr.exe\""	5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

afehymqr.exe

description pid process target process

PID 2672 set thread context of 2760 2672 afehymqr.exe svchost.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3800 2760 WerFault.exe svchost.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exeafehymqr.exe

pid process

4508 5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe
2672 afehymqr.exe

description	pid	process	target process
PID 2672 set thread context of 2760	2672	afehymqr.exe	svchost.exe

pid	pid_target	process	target process
3800	2760	WerFault.exe	svchost.exe

pid	process
4508	5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe
2672	afehymqr.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exeafehymqr.exe

description	pid	process	target process
PID 4508 wrote to memory of 2672	4508	5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe	afehymqr.exe
PID 4508 wrote to memory of 2672	4508	5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe	afehymqr.exe
PID 4508 wrote to memory of 2672	4508	5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe	afehymqr.exe
PID 4508 wrote to memory of 4128	4508	5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe	cmd.exe
PID 4508 wrote to memory of 4128	4508	5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe	cmd.exe
PID 4508 wrote to memory of 4128	4508	5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe	cmd.exe
PID 2672 wrote to memory of 2760	2672	afehymqr.exe	svchost.exe
PID 2672 wrote to memory of 2760	2672	afehymqr.exe	svchost.exe
PID 2672 wrote to memory of 2760	2672	afehymqr.exe	svchost.exe
PID 2672 wrote to memory of 2760	2672	afehymqr.exe	svchost.exe
PID 2672 wrote to memory of 2760	2672	afehymqr.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe
"C:\Users\Admin\AppData\Local\Temp\5f169cada11fffca75af5eb67f6d0fd92c1042cca1ed460aa7196e4a9ecbb1a5.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4508

C:\Users\Admin\afehymqr.exe
"C:\Users\Admin\afehymqr.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2672

C:\Windows\SysWOW64\svchost.exe
svchost.exe
3⤵
PID:2760

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2760 -s 472
4⤵
- Program crash
PID:3800

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\3264.bat" "
2⤵
PID:4128

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2760 -ip 2760
1⤵
PID:1284

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\3264.bat
Filesize
302B

MD5
c03289a40dc74395235d44c31eb9c93d

SHA1
06c2803256eca6c7f43627f0b5038a10e8bfc2eb

SHA256
8e324c02152e42805f98eb6e4cf0736948fd63a1189b2b127f962ddd55bb3cec

SHA512
0947e844ce1590137581c4e35aefa79a97b3ee112e5814f48bf9805a2cc53ecf6116607d02e296deb048012db2ec8b0dc36929aa37c7f74b742ccbfc52ee27f1

Download Submit
C:\Users\Admin\afehymqr.exe
Filesize
44.5MB

MD5
f7ad663aee2b9e75cb5a9a622b69b3bd

SHA1
b470ec135fe779288d16e663404f43bfe14b9da5

SHA256
51165abddad2900611d7b061bed90838bceaaff83cbbfa798868a7496696046e

SHA512
645738527e7821feeae18bb4b6fc20a69b530139405ff4249e8702d4bc50d6c293aaafb8773b76f8ef72226eca2c947d3274ce7b71af44f0837f905c441bd7db

Download Submit
C:\Users\Admin\afehymqr.exe
Filesize
44.5MB

MD5
f7ad663aee2b9e75cb5a9a622b69b3bd

SHA1
b470ec135fe779288d16e663404f43bfe14b9da5

SHA256
51165abddad2900611d7b061bed90838bceaaff83cbbfa798868a7496696046e

SHA512
645738527e7821feeae18bb4b6fc20a69b530139405ff4249e8702d4bc50d6c293aaafb8773b76f8ef72226eca2c947d3274ce7b71af44f0837f905c441bd7db

Download Submit
memory/2672-159-0x0000000074F00000-0x000000007505D000-memory.dmp

Filesize
1.4MB

Download
memory/2672-141-0x0000000000000000-mapping.dmp

Download
memory/2672-147-0x0000000002C71000-0x0000000002C76000-memory.dmp

Filesize
20KB

Download
memory/2760-161-0x0000000000580000-0x0000000000592000-memory.dmp

Filesize
72KB

Download
memory/2760-157-0x0000000000580000-0x0000000000592000-memory.dmp

Filesize
72KB

Download
memory/2760-156-0x0000000000000000-mapping.dmp

Download
memory/4128-148-0x0000000000000000-mapping.dmp

Download
memory/4508-146-0x0000000074F00000-0x000000007505D000-memory.dmp

Filesize
1.4MB

Download
memory/4508-149-0x0000000074F00000-0x000000007505D000-memory.dmp

Filesize
1.4MB

Download
memory/4508-134-0x0000000002DF1000-0x0000000002DF6000-memory.dmp

Filesize
20KB

Download
memory/4508-140-0x0000000002DF1000-0x0000000002DF6000-memory.dmp

Filesize
20KB

Download
memory/4508-136-0x0000000000400000-0x0000000000412000-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